F Dexter

Summary

Affiliation: University of Iowa
Country: USA

Publications

  1. ncbi Measuring the frequency of delays in admission into the PACU
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia and Health Management and Policy, University of Iowa, Iowa City, IA 52242, USA
    J Perianesth Nurs 22:293-4. 2007
  2. ncbi Why calculating PACU staffing is so hard and why/how operations research specialists can help
    Franklin Dexter
    Divison of Management Consulting, Department of Health Management and Policy, University of Iowa, Iowa City, IA, USA
    J Perianesth Nurs 22:357-9. 2007
  3. ncbi Coordination of appointments for anesthesia care outside of operating rooms using an enterprise-wide scheduling system
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa 52242, USA
    Anesth Analg 105:1701-10, table of contents. 2007
  4. doi Systematic review of general thoracic surgery articles to identify predictors of operating room case durations
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 106:1232-41, table of contents. 2008
  5. ncbi Sensitivity of super-efficient data envelopment analysis results to individual decision-making units: an example of surgical workload by specialty
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Health Care Manag Sci 11:307-18. 2008
  6. pmc Comparison of alphabetical versus categorical display format for medication order entry in a simulated touch screen anesthesia information management system: an experiment in clinician-computer interaction in anesthesia
    Anil A Marian
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    BMC Med Inform Decis Mak 12:46. 2012
  7. doi Anesthesiology residents' and nurse anesthetists' perceptions of effective clinical faculty supervision by anesthesiologists
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, 200 Hawkins Drive, Iowa City, IA 52242, USA
    Anesth Analg 116:1352-5. 2013
  8. doi Estimate of the relative risk of succinylcholine for triggering malignant hyperthermia
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, 200 Hawkins Dr, 6JCP, Iowa City, IA 52242, USA
    Anesth Analg 116:118-22. 2013
  9. doi Monitoring changes in individual surgeon's workloads using anesthesia data
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, 200 Hawkins Drive, 6JCP, Iowa City, IA 52242, USA
    Can J Anaesth 59:571-7. 2012
  10. doi Systematic criteria for type and screen based on procedure's probability of erythrocyte transfusion
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesthesiology 116:768-78. 2012

Detail Information

Publications127 found, 100 shown here

  1. ncbi Measuring the frequency of delays in admission into the PACU
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia and Health Management and Policy, University of Iowa, Iowa City, IA 52242, USA
    J Perianesth Nurs 22:293-4. 2007
  2. ncbi Why calculating PACU staffing is so hard and why/how operations research specialists can help
    Franklin Dexter
    Divison of Management Consulting, Department of Health Management and Policy, University of Iowa, Iowa City, IA, USA
    J Perianesth Nurs 22:357-9. 2007
  3. ncbi Coordination of appointments for anesthesia care outside of operating rooms using an enterprise-wide scheduling system
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa 52242, USA
    Anesth Analg 105:1701-10, table of contents. 2007
    ..An anesthesia department implemented scheduling of anesthetics outside of operating rooms (non-OR) by clerks and nurses from other departments using its hospital's enterprise-wide scheduling system...
  4. doi Systematic review of general thoracic surgery articles to identify predictors of operating room case durations
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 106:1232-41, table of contents. 2008
    ..We hypothesized that the accuracy of case duration prediction could be improved by the use of other electronic medical record data (e.g., patient weight or surgeon notes using standardized vocabularies)...
  5. ncbi Sensitivity of super-efficient data envelopment analysis results to individual decision-making units: an example of surgical workload by specialty
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Health Care Manag Sci 11:307-18. 2008
    ..This analysis enhances the quality of decision support using DEA estimates for the potential ofa decision-making unit to grow one or more of its outputs...
  6. pmc Comparison of alphabetical versus categorical display format for medication order entry in a simulated touch screen anesthesia information management system: an experiment in clinician-computer interaction in anesthesia
    Anil A Marian
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    BMC Med Inform Decis Mak 12:46. 2012
    ..Anesthesia information management system (AIMS) records should be designed and configured to facilitate the accurate and prompt recording of multiple drugs administered coincidentally or in rapid succession...
  7. doi Anesthesiology residents' and nurse anesthetists' perceptions of effective clinical faculty supervision by anesthesiologists
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, 200 Hawkins Drive, Iowa City, IA 52242, USA
    Anesth Analg 116:1352-5. 2013
    ..g., anesthesiology residents and certified registered nurse anesthetists [CRNAs]) under the guidance of faculty anesthesiologists. Performance appraisal of faculty anesthesiologists should therefore include evaluation of this guidance...
  8. doi Estimate of the relative risk of succinylcholine for triggering malignant hyperthermia
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, 200 Hawkins Dr, 6JCP, Iowa City, IA 52242, USA
    Anesth Analg 116:118-22. 2013
    ..We determine the magnitude of the relative risk of the administration of succinylcholine for triggering MH...
  9. doi Monitoring changes in individual surgeon's workloads using anesthesia data
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, 200 Hawkins Drive, 6JCP, Iowa City, IA 52242, USA
    Can J Anaesth 59:571-7. 2012
    ..We investigated whether changes in the number of cases performed by surgeons can be used as an appropriate surrogate for anesthesia departments' billed units...
  10. doi Systematic criteria for type and screen based on procedure's probability of erythrocyte transfusion
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesthesiology 116:768-78. 2012
    ..There is substantial heterogeneity in the scientific literature for how that decision should be made...
  11. doi Forecasting preanesthesia clinic appointment duration from the electronic medical record medication list
    Franklin Dexter
    Department of Anesthesia, University of Iowa, 6 JCP, 200 Hawkins Dr, Iowa City, IA 52242, USA
    Anesth Analg 114:670-3. 2012
    ....
  12. pmc A Markov computer simulation model of the economics of neuromuscular blockade in patients with acute respiratory distress syndrome
    Alex Macario
    Department of Anesthesia, Stanford University School of Medicine, Stanford, CA 94305, USA
    BMC Med Inform Decis Mak 6:15. 2006
    ..and/or a reduction in the incidence of AQMS from 25% to 21%, provide enough benefit to justify a drug with an additional expenditure of $267 (the difference in acquisition cost between a generic and brand name neuromuscular blocker)?..
  13. ncbi Scheduling of cases in an ambulatory center
    Franklin Dexter
    Department of Anesthesia, University of Iowa College of Medicine, 6 John Colloton Pavillon, Iowa City, IA 52242, USA
    Anesthesiol Clin North America 21:387-402. 2003
    ..In contrast, OR allocation decisions tend to be different than what OR managers do in practice. This means that it is important to apply the statistical methods for allocating OR time...
  14. ncbi Managing risk and expected financial return from selective expansion of operating room capacity: mean-variance analysis of a hospital's portfolio of surgeons
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesth Analg 97:190-5, table of contents. 2003
    ..Our results show that, in such circumstances, there may be little benefit from further changing the portfolio to reduce its financial risk...
  15. ncbi Use of operating room information system data to predict the impact of reducing turnover times on staffing costs
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesth Analg 97:1119-26, table of contents. 2003
    ....
  16. ncbi Use of discharge abstract databases to differentiate among pediatric hospitals based on operative procedures: surgery in infants and young children in the state of Iowa
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesthesiology 99:480-7. 2003
    ..Yet, it is unknown how to use existing databases to quantify where infants and young children undergo surgery, and to use that information to differentiate among facilities...
  17. ncbi Comparison of statistical methods to predict the time to complete a series of surgical cases
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    J Clin Monit Comput 15:45-51. 1999
    ..Although the computational method is preferred on theoretical grounds to that involving sample means, application of both methods shows that the more practical method is to use the sample means of previous case times and turnovers...
  18. ncbi Optimal sequencing of urgent surgical cases. Scheduling cases using operating room information systems
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    J Clin Monit Comput 15:153-62. 1999
    ..We use an example to illustrate that the optimal sequence varies depending on the scheduling objective chosen...
  19. ncbi How to release allocated operating room time to increase efficiency: predicting which surgical service will have the most underutilized operating room time
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesth Analg 96:507-12, table of contents. 2003
    ..In contrast, compromising by releasing the OR time of a service other than the one with the most allocated but unscheduled OR time markedly reduces OR efficiency. OR managers can use these results when releasing allocated OR time...
  20. ncbi Sampling error can significantly affect measured hospital financial performance of surgeons and resulting operating room time allocations
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 95:184-8, table of contents. 2002
    ..As many as 22% of surgeons would have had OR time reduced because of sampling error. We recommend that physicians ask for and OR managers get confidence intervals of end points of financial analyses when making decisions based on them...
  21. ncbi Development of an appropriate list of surgical procedures of a specified maximum anesthetic complexity to be performed at a new ambulatory surgery facility
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 95:78-82, table of contents. 2002
    ....
  22. ncbi What sample sizes are required for pooling surgical case durations among facilities to decrease the incidence of procedures with little historical data?
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesthesiology 96:1230-6. 2002
    ..The authors examined sample size requirements for pooling case duration data from several facilities to create a 90% chance of having case duration data for almost all procedures...
  23. ncbi When to release allocated operating room time to increase operating room efficiency
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesth Analg 98:758-62, table of contents. 2004
    ....
  24. ncbi A psychological basis for anesthesiologists' operating room managerial decision-making on the day of surgery
    Franklin Dexter
    Department of Anesthesia and Health Management and Policy, Division of Management Consulting, University of Iowa, IA 52242, USA
    Anesth Analg 105:430-4. 2007
    ..Although a sound basis for decision-making involving individual ORs, the heuristic is often suboptimal economically when applied to decisions involving multiple ORs...
  25. ncbi Data envelopment analysis to determine by how much hospitals can increase elective inpatient surgical workload for each specialty
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 99:1492-500; table of contents. 2004
    ..How sensitive is the hospital's orthopedic workload to changes in decision making at nearby competing hospitals?..
  26. ncbi Impact of average patient acuity on staffing of the phase I PACU
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    J Perianesth Nurs 21:303-10. 2006
    ..Methods are described for adjusting staffing requirements when some patient acuities differ from 1 nurse:2 patients, when patients transition from one acuity to another, and when acuity is not known for all patients...
  27. ncbi Staffing and case scheduling for anesthesia in geographically dispersed locations outside of operating rooms
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Curr Opin Anaesthesiol 19:453-8. 2006
    ..Whereas methods to predict how long such cases take were published recently, this article reviews staffing and case scheduling...
  28. ncbi Mean operating room times differ by 50% among hospitals in different countries for laparoscopic cholecystectomy and lung lobectomy
    Franklin Dexter
    Department of Anesthesia, University of Iowa City, Iowa 52242, USA
    J Anesth 20:319-22. 2006
    ..Thus, international benchmarking studies to understand differences in OR times worldwide may be beneficial...
  29. ncbi Predicting anesthesia times for diagnostic and interventional radiological procedures
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesth Analg 102:1491-500. 2006
    ..g., 6 pm). Both diagnostic and interventional radiology results were similarly less accurate when Version 9 of the International Classifications of Diseases' procedure codes was used instead of CPT...
  30. ncbi Holiday and weekend operating room on-call staffing requirements
    Franklin Dexter
    Department of Anesthesia and Health Management and Policy, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 103:1494-8. 2006
    ..Every facility that performs cases on holidays has in some way decided on its operating room (OR) and anesthesia staffing for holidays. Previous studies have not examined how best to calculate appropriate holiday staffing...
  31. ncbi Bayesian prediction bounds and comparisons of operating room times even for procedures with few or no historic data
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, The University of Iowa, Iowa City, IA 52242, USA
    Anesthesiology 103:1259-167. 2005
    ..When there are a moderate or large number of historic data, the historic data alone are used in the prediction. When there are a small number of historic data, a weighted combination is used...
  32. ncbi Observational study of operating room times for knee and hip replacement surgery at nine U.S. community hospitals
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Health Care Manag Sci 9:325-39. 2006
    ..At these hospitals, OR nursing and anesthesia labor costs were fixed costs, because the OR workload averaged only 5.6 hr of cases per day...
  33. ncbi Bed management displays to optimize patient flow from the OR to the PACU
    Franklin Dexter
    Department of Anesthesia, University of Iowa, IA 52242, USA
    J Perianesth Nurs 22:218-9. 2007
  34. ncbi Quantifying effect of a hospital's caseload for a surgical specialty on that of another hospital using multi-attribute market segments
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, Iowa, USA
    Health Care Manag Sci 8:121-31. 2005
    ..When actual market segments with homogeneous groups of patients are used, competitive effects of hospitals in the same market area are far less than expected...
  35. ncbi Estimating the incidence of prolonged turnover times and delays by time of day
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, The University of Iowa, Iowa City, IA 52242, USA
    Anesthesiology 102:1242-8; discussion 6A. 2005
    ..Prolonged turnover times cause frustration and can thereby reduce professional satisfaction and the workload surgeons bring to a hospital...
  36. ncbi Tactical decision making for selective expansion of operating room resources incorporating financial criteria and uncertainty in subspecialties' future workloads
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 100:1425-32, table of contents. 2005
    ..In a case study from a tertiary hospital, future demand estimates were needed for only 15% of surgeons, illustrating the practicality of these methods for use in tactical OR allocation decisions...
  37. ncbi Strategies to reduce delays in admission into a postanesthesia care unit from operating rooms
    Franklin Dexter
    Division of Management Consulting, University of Iowa, Iowa City 52242, USA
    J Perianesth Nurs 20:92-102. 2005
    ..Such interventions should be considered only if statistical analysis, performed by using computer simulation, has established that reducing PACU length of stay will reduce delays in admission at a manager's facility...
  38. ncbi Operating room managerial decision-making on the day of surgery with and without computer recommendations and status displays
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 105:419-29. 2007
    ..Decision makers can rely on passive status displays (e.g., big screens or whiteboards), active status displays (e.g., text pager notification), and/or command displays (e.g., text recommendations about what to do)...
  39. ncbi Using length of stay data from a hospital to evaluate whether limiting elective surgery at the hospital is an inappropriate decision
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    J Clin Anesth 16:421-5. 2004
    ..The anesthesiologists suffer financially. In this paper, we show how publicly released national LOS data can be applied specifically to these cases...
  40. ncbi Making management decisions on the day of surgery based on operating room efficiency and patient waiting times
    Franklin Dexter
    Department of Anesthesia and Health Management and Policy, The University of Iowa, Iowa City, USA
    Anesthesiology 101:1444-53. 2004
    ..Future studies should focus on using real-time display of data to reduce patient waiting...
  41. ncbi Changing allocations of operating room time from a system based on historical utilization to one where the aim is to schedule as many surgical cases as possible
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesth Analg 94:1272-9, table of contents. 2002
    ..These relationships determine the expected changes in each service's OR allocation, when a facility using Fixed Hours considers converting to the Any Workday or Four Weeks systems...
  42. ncbi Identification of systematic underestimation (bias) of case durations during case scheduling would not markedly reduce overutilized operating room time
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa School of Medicine, Iowa City, IA 52242, USA
    J Clin Anesth 19:198-203. 2007
    ..We studied surgeons' and schedulers' case scheduling behavior to evaluate whether such a strategy would be useful...
  43. ncbi A strategy to decide whether to move the last case of the day in an operating room to another empty operating room to decrease overtime labor costs
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesth Analg 91:925-8. 2000
    ....
  44. ncbi What is the relative frequency of uncommon ambulatory surgery procedures performed in the United States with an anesthesia provider?
    F Dexter
    Departments of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesth Analg 90:1343-7. 2000
    ..This could impair the effectiveness of predicting the durations of ambulatory cases by using historical case-duration data...
  45. doi Multicenter assessment of the Iowa Satisfaction with Anesthesia Scale, an instrument that measures patient satisfaction with monitored anesthesia care
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Anesthesia 6JCP, Iowa City, IA 52242, USA
    Anesth Analg 113:364-8. 2011
    ..We analyzed the data from these patients to provide anesthesiologists and statisticians designing multicenter clinical trials the information needed to use the ISAS as a primary study end point...
  46. ncbi Sequencing cases in the operating room: predicting whether one surgical case will last longer than another
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City, Iowa College of Business Administration, North Dakota State University, Fargo, North Dakota, USA
    Anesth Analg 90:975-9. 2000
    ..We confirmed the accuracy of our method by using actual case duration data...
  47. ncbi Observational study of anaesthetists' fresh gas flow rates during anaesthesia with desflurane, isoflurane and sevoflurane
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anaesth Intensive Care 39:460-4. 2011
    ..These results show that departments choosing to use inexpensive automatic email feedback on FGF should target all anaesthetists and focus on variation in FGF among anaesthetists' cases...
  48. doi Statistical grand rounds: Importance of appropriately modeling procedure and duration in logistic regression studies of perioperative morbidity and mortality
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Anesthesia 6JCP, Iowa City, IA 52242, USA
    Anesth Analg 113:1197-201. 2011
    ..By reviewing the literature about logistic regression and about predicting case duration, we show that the use of actual instead of scheduled duration can result in biased logistic regression results...
  49. ncbi Which algorithm for scheduling add-on elective cases maximizes operating room utilization? Use of bin packing algorithms and fuzzy constraints in operating room management
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesthesiology 91:1491-500. 1999
    ....
  50. doi Calculating institutional support that benefits both the anesthesia group and hospital
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 106:544-53, table of contents. 2008
    ..e., OR allocations). Such an agreement creates incentives whereby the hospital and anesthesia group both profit from increased OR workload and from more accurate specialty-specific staffing...
  51. ncbi A strategy for deciding operating room assignments for second-shift anesthetists
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesth Analg 89:920-4. 1999
    ..IMPLICATIONS: A relief strategy that relies only on analyzing historical case durations from an operating room information system to predict the time remaining in cases performs well at minimizing anesthetist staffing costs...
  52. ncbi Statistical method to evaluate management strategies to decrease variability in operating room utilization: application of linear statistical modeling and Monte Carlo simulation to operating room management
    F Dexter
    Department of Anesthesia, The University of Iowa, Iowa City, 52242, USA
    Anesthesiology 91:262-74. 1999
    ..The authors developed a method to analyze data from surgical services information systems to evaluate which management interventions can most effectively decrease variability in underutilized time...
  53. ncbi An operating room scheduling strategy to maximize the use of operating room block time: computer simulation of patient scheduling and survey of patients' preferences for surgical waiting time
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesth Analg 89:7-20. 1999
    ..OR utilization depends greatly on, and increases as, the average length of time patients wait for surgery increases...
  54. ncbi Use of an automated anesthesia information system to determine reference limits for vital signs during cesarean section
    F Dexter
    Department of Anesthesiology, Duke University, USA
    J Clin Monit Comput 14:491-8. 1998
    ....
  55. ncbi Computer simulation to determine how rapid anesthetic recovery protocols to decrease the time for emergence or increase the phase I postanesthesia care unit bypass rate affect staffing of an ambulatory surgery center
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesth Analg 88:1053-63. 1999
    ..39 per case) from technologies (e.g., new anesthetics or Bispectral Index [Aspect Medical Systems, Natick, MA] monitoring) to decrease emergence times or increase the phase I bypass rates...
  56. ncbi A statistical method for predicting postanesthesia care unit staffing needs
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City, USA
    AORN J 65:947-50, 952-3, 955-7. 1997
    ....
  57. ncbi A method to compare costs of drugs and supplies among anesthesia providers: a simple statistical method to reduce variations in cost due to variations in casemix
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesthesiology 88:1350-6. 1998
    ....
  58. ncbi Development of a measure of patient satisfaction with monitored anesthesia care: the Iowa Satisfaction with Anesthesia Scale
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesthesiology 87:865-73. 1997
    ..g., "Disagree moderately") below each statement. The mean of their responses to each of the 11 statements gives a single number, which is a quantitative measure of a patient's satisfaction with their MAC...
  59. pmc Event-based knowledge elicitation of operating room management decision-making using scenarios adapted from information systems data
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City, 52242, USA
    BMC Med Inform Decis Mak 11:2. 2011
    ....
  60. ncbi The lack of systematic month-to-month variation over one-year periods in ambulatory surgery caseload -application to anesthesia staffing
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City, Iowa, USA
    Anesth Analg 91:1426-30. 2000
    ..These findings suggest that the relatively simple statistical methods that are available to estimate future anesthesia workload will work for many anesthesia groups...
  61. ncbi How to schedule elective surgical cases into specific operating rooms to maximize the efficiency of use of operating room time
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, Iowa, USA
    Anesth Analg 94:933-42, table of contents. 2002
    ..The analysis applies to surgical suites at which surgeons and patients have access to operating room time every workday...
  62. ncbi Use of linear programming to estimate impact of changes in a hospital's operating room time allocation on perioperative variable costs
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesthesiology 96:718-24. 2002
    ..The authors used a detailed hospital cost database to investigate by how much a change in allocations of operating room (OR) time among surgeons can increase perioperative variable costs...
  63. doi Case scheduling preferences of one Surgeon's cataract surgery patients
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 108:579-82. 2009
    ..Yet, little is known of the importance that patients place on scheduling convenience and flexibility...
  64. doi Typical savings from each minute reduction in tardy first case of the day starts
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 108:1262-7. 2009
    ..Analysts and clinicians sitting in operating room (OR) committee meetings cannot evaluate rapidly whether a suggested idea to reduce delays in first case of the day starts can be beneficial economically...
  65. ncbi Recommendations for hyperbaric oxygen therapy of cerebral air embolism based on a mathematical model of bubble absorption
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesth Analg 84:1203-7. 1997
    ....
  66. ncbi Reducing family members' anxiety while waiting on the day of surgery: systematic review of studies and implications of HIPAA health information privacy rules
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    J Clin Anesth 13:478-81. 2001
    ....
  67. ncbi The impact on revenue of increasing patient volume at surgical suites with relatively high operating room utilization
    F Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 92:1215-21. 2001
    ..e., profitability)...
  68. ncbi Scheduling a delay between different surgeons' cases in the same operating room on the same day using upper prediction bounds for case durations
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesth Analg 92:943-6. 2001
    ..Implications: We show how to use a statistical analysis of historical case duration data to calculate an appropriate and accurate scheduled delay between two surgeons' cases in the same operating room on the same day...
  69. ncbi Optimal number of beds and occupancy to minimize staffing costs in an obstetrical unit?
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Can J Anaesth 48:295-301. 2001
    ..We describe how the science of analyzing patient arrival and discharge data can be used to determine the optimal number of staffed OB beds to minimize labour costs...
  70. doi Influence of procedure classification on process variability and parameter uncertainty of surgical case durations
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 110:1155-63. 2010
    ..One contributor to predictive variability is process variability, which arises among cases of the same procedure(s). Another contributor is parameter uncertainty, which is caused by small sample sizes of historical data...
  71. doi Control chart monitoring of the numbers of cases waiting when anesthesiologists do not bring in members of call team
    Johannes Ledolter
    Department of Management Sciences, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 111:196-203. 2010
    ..Queuing occurs even if managers have selected an appropriate number of ORs to be run during evenings and weekends (i.e., the number of cases [jobs] exceeds the number of ORs [identical machines] that are actually run)...
  72. doi Analysis of operating room allocations to optimize scheduling of specialty rotations for anesthesia trainees
    Franklin Dexter
    Operations Research, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 111:520-4. 2010
    ..We describe a method to create hybrid rotations of two specialties (e.g., cardiac and vascular surgery), thereby reducing the numbers of days that trainees are "pulled" from their scheduled rotations...
  73. ncbi Assigning surgical cases with regional anesthetic blocks to anesthetists and operating rooms based on operating room efficiency
    Cormac T O'Sullivan
    College of Nursing, University of Iowa, Iowa City, USA
    AANA J 74:213-8. 2006
    ....
  74. doi Long-term forecasting of anesthesia workload in operating rooms from changes in a hospital's local population can be inaccurate
    Danielle Masursky
    Department of Anesthesiology, SUNY Upstate Medical University, USA
    Anesth Analg 106:1223-31, table of contents. 2008
    ..Anesthesia department planning depends on forecasting future demand for perioperative services. Little is known about long-range forecasting of anesthesia workload...
  75. ncbi Weekend operating room on call staffing requirements
    F Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, USA
    AORN J 74:664-5, 668-71. 2001
    ..An example based on 248 weeks of data collected from a large surgical suite is presented, and staffing for emergency procedures is reviewed...
  76. doi Reducing tardiness from scheduled start times by making adjustments to the operating room schedule
    Ruth E Wachtel
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 108:1902-9. 2009
    ..Factors that influence tardiness were quantified in a companion paper and have been used to develop interventions that have the potential for reducing tardiness...
  77. doi Optimizing the arrival, waiting, and NPO times of children on the day of pediatric endoscopy procedures
    Bettina Smallman
    Department of Anesthesiology, SUNY Upstate, Syracuse, NewYork, USA
    Anesth Analg 110:879-87. 2010
    ..We critique which of the several types of OR management decisions dependent on accuracy of prediction are relevant to series (lists) of brief pediatric anesthetics...
  78. doi Use of state discharge abstract data to identify hospitals performing similar types of operative procedures
    Ruth E Wachtel
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 110:1146-54. 2010
    ..A hospital or anesthesia or surgical group that is making decisions to expand its practice benefits from knowledge of the types of surgical procedures performed at other hospitals...
  79. doi Tactical increases in operating room block time for capacity planning should not be based on utilization
    Ruth E Wachtel
    Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesth Analg 106:215-26, table of contents. 2008
    ..Numerous reasons are presented to explain why tactical planning of additional block time should not be based on current or past utilization of block time...
  80. ncbi Forecasting surgical groups' total hours of elective cases for allocation of block time: application of time series analysis to operating room management
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesthesiology 91:1501-8. 1999
    ....
  81. ncbi Design of appointment systems for preanesthesia evaluation clinics to minimize patient waiting times: a review of computer simulation and patient survey studies
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesth Analg 89:925-31. 1999
    ..Finally, traditional efforts at making waiting for a consultation tolerable should be made...
  82. ncbi Cost identification analysis for succinylcholine
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesth Analg 92:693-9. 2001
    ..However, a precise costing requires better knowledge of the incidence and consequences of anaphylactic or anaphylactoid reactions to succinylcholine...
  83. ncbi Decrease in case duration required to complete an additional case during regularly scheduled hours in an operating room suite: a computer simulation study
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesth Analg 88:72-6. 1999
    ....
  84. ncbi Scheduling surgical cases into overflow block time- computer simulation of the effects of scheduling strategies on operating room labor costs
    F Dexter
    Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesth Analg 90:980-8. 2000
    ..The strategy we developed provides surgeons and patients with some flexibility in scheduling, while only increasing OR staffing costs slightly over the minimum achieved when the OR manager controls scheduling...
  85. ncbi Physicians' perceptions of minimum time that should be saved to move a surgical case from one operating room to another: internet-based survey of the membership of the Association of Anesthesia Clinical Directors (AACD)
    Franklin Dexter
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    J Clin Anesth 15:206-10. 2003
    ..However, there is a penalty cost for moving a case. The goal of the study was to measure perceptions of the minimum time that needs to be saved for it to be worthwhile to move a case from a late-running OR to another OR...
  86. doi Should anesthesia groups advocate funding of clinics and scheduling systems to increase operating room workload?
    Liam O'Neill
    Department of Health Management and Policy, University of North Texas Health Science Center, Fort Worth, Texas, USA
    Anesthesiology 111:1016-24. 2009
    ..Knowledge of patterns related to patient visits in a multispecialty group is important for helping anesthesia groups make strategic and tactical decisions relevant to increasing anesthesia workload...
  87. ncbi Optimizing second shift OR staffing
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, USA
    AORN J 77:825-30. 2003
    ..Managers do not need hospital information systems staff members to provide data from both anesthesia billing and OR information systems to make second-shift staffing decisions. One or the other is adequate...
  88. doi Forecasting and perception of average and latest hours worked by on-call anesthesiologists
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 109:1246-52. 2009
    ..The 80th percentile (with a suitable upper confidence limit for uncertainty due to limited sample sizes) can be used for judging the earliest time by which after-work activities reasonably can be planned...
  89. doi Numbers of simultaneous turnovers calculated from anesthesia or operating room information management system data
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 109:900-5. 2009
    ..Anesthesia and/or OR information management system data can be analyzed statistically to quantify simultaneous turnovers to evaluate whether to add an additional turnover team...
  90. doi Growth rates in pediatric diagnostic imaging and sedation
    Ruth E Wachtel
    Department of Anesthesia, University of Iowa, Iowa City, Iowa 52242, USA
    Anesth Analg 108:1616-21. 2009
    ..Workload has increased greatly over the past decade for anesthesia providers administering general anesthesia and/or sedation for pediatric diagnostic imaging...
  91. ncbi Validation of statistical methods to compare cancellation rates on the day of surgery
    Franklin Dexter
    Division of Management Consulting and Department of Anesthesia, University of Iowa, Iowa City 52242, USA
    Anesth Analg 101:465-73, table of contents. 2005
    ..Methods such as the Fisher's exact test and {chi}2 test should be avoided for this application because they can give erroneous results...
  92. doi Review article: review of behavioral operations experimental studies of newsvendor problems for operating room management
    Ruth E Wachtel
    Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 110:1698-710. 2010
    ..Results suggest that only the use of computerized decision-support systems can effectively circumvent these biases...
  93. ncbi Validity and usefulness of a method to monitor surgical services' average bias in scheduled case durations
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, 6 JCP, University of Iowa, Iowa City, Iowa 52242, USA
    Can J Anaesth 52:935-9. 2005
    ..We describe a method to monitor surgical services' average bias in scheduled case durations...
  94. doi Automatic updating of times remaining in surgical cases using bayesian analysis of historical case duration data and "instant messaging" updates from anesthesia providers
    Franklin Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, IA 52242, USA
    Anesth Analg 108:929-40. 2009
    ..Once a case scheduled for 2 h has been on-going for 1.5 h, the median time remaining is not 0.5 h but longer, and the amount longer differs among procedures...
  95. ncbi Recovery of evoked potential amplitude after cerebral arterial air embolism in the rabbit: a comparison of the effect of cardiopulmonary bypass with normal circulation
    B J Hindman
    Department of Anesthesia, University of Iowa, College of Medicine, Iowa City, USA
    Anesthesiology 88:696-707. 1998
    ..Cerebral arterial air embolism (CAAE) may cause neurologic injury during cardiac surgery. It is not known whether cardiopulmonary bypass (CPB) increases or decreases brain injury from CAAE compared with the normal circulation...
  96. ncbi Cerebrovascular relaxation responses to endothelium-dependent and -independent vasodilators after normothermic and hypothermic cardiopulmonary bypass in the rabbit
    B J Hindman
    Department of Anesthesia, University of Iowa, College of Medicine, Iowa City, USA
    Anesthesiology 88:1614-23. 1998
    ..Because hypothermia attenuates many inflammatory processes, the authors hypothesized that hypothermic cardiopulmonary bypass would be associated with better endothelial function than normothermic cardiopulmonary bypass...
  97. ncbi Statistical method for predicting when patients should be ready on the day of surgery
    F Dexter
    University of Iowa, Iowa City, Iowa, and North Dakota State University, Fargo, North Dakota, USA
    Anesthesiology 93:1107-14. 2000
    ..Previously, mathematical theory was developed for determining when a patient should be ready for surgery on the day of surgery. To apply this theory, a method is needed to predict the earliest start time of the case...
  98. ncbi Brain injury after cerebral arterial air embolism in the rabbit as determined by triphenyltetrazolium staining
    B J Hindman
    Department of Anesthesia, University of Iowa, College of Medicine, Iowa City, USA
    Anesthesiology 90:1462-73. 1999
    ..Using a rabbit model, the authors hypothesized they could detect and quantitate severe brain injury and infarction 24 h after microscopic CAAE using the vital stain triphenyltetrazolium chloride...
  99. ncbi A statistical analysis of weekday operating room anesthesia group staffing costs at nine independently managed surgical suites
    F Dexter
    Division of Management Consulting, Department of Anesthesia, University of Iowa, Iowa City, Iowa
    Anesth Analg 92:1493-8. 2001
    ....
  100. ncbi Brain expression of inducible cyclooxygenase 2 messenger RNA in rats undergoing cardiopulmonary bypass
    B J Hindman
    Department of Anesthesia, University of Iowa, College of Medicine, Iowa City, USA
    Anesthesiology 95:1380-8. 2001
    ....
  101. ncbi Hospital profitability per hour of operating room time can vary among surgeons
    A Macario
    Department of Anesthesia, Stanford University School of Medicine, Stanford, California 94305 5640, USA
    Anesth Analg 93:669-75. 2001
    ..Whether the variability in contribution margin among surgeons should be used to more optimally (profitably) allocate OR time depends on the scheduling objectives of the surgical suite...