O John Ma

Summary

Affiliation: Oregon Health and Science University
Country: USA

Publications

  1. ncbi request reprint How fast is the focused assessment with sonography for trauma examination learning curve?
    O John Ma
    Department of Emergency Medicine, Oregon Health and Science University, Portland, Oregon, USA
    Emerg Med Australas 20:32-7. 2008
  2. ncbi request reprint Ultrasound applications in mass casualties and extreme environments
    O John Ma
    Department of Emergency Medicine, Oregon Health and Science University, Portland, OR 97239, USA
    Crit Care Med 35:S275-9. 2007
  3. pmc Is futile care in the injured elderly an important target for cost savings?
    Ross J Fleischman
    Department of Emergency Medicine, Oregon Health and Science University, Portland, OR, USA
    J Trauma Acute Care Surg 73:146-51. 2012
  4. ncbi request reprint Anechoic stripe size influences accuracy of FAST examination interpretation
    O John Ma
    Department of Emergency Medicine, Truman Medical Center, Kansas City, MO 64108, USA
    Acad Emerg Med 13:248-53. 2006
  5. pmc The optimum follow-up period for assessing mortality outcomes in injured older adults
    Ross J Fleischman
    Center for Policy and Research in Emergency Medicine, Department of Emergency Medicine, Oregon Health and Science University, Portland, Oregon 97239, USA
    J Am Geriatr Soc 58:1843-9. 2010
  6. doi request reprint Validation of length of hospital stay as a surrogate measure for injury severity and resource use among injury survivors
    Craig D Newgard
    Center for Policy and Research in Emergency Medicine, Department of Emergency Medicine, Oregon Health and Science University, Portland, OR, USA
    Acad Emerg Med 17:142-50. 2010
  7. ncbi request reprint Association between a positive ED FAST examination and therapeutic laparotomy in normotensive blunt trauma patients
    Mark Moylan
    Center for Policy and Research in Emergency Medicine, Department of Emergency Medicine, Oregon Health and Science University, Portland, Oregon 97201 3098, USA
    J Emerg Med 33:265-71. 2007
  8. ncbi request reprint Prospective analysis of the effect of physician experience with the FAST examination in reducing the use of CT scans
    O John Ma
    Department of Emergency Medicine, Truman Medical Center, University of Missouri Kansas City School of Medicine, 2301 Holmes Street, Kansas City, Missouri 64108, USA
    Emerg Med Australas 17:24-30. 2005
  9. ncbi request reprint Populations at risk for intubation nonattempt and failure in the prehospital setting
    Alex G Garza
    Department of Emergency Medicine, University of Missouri Kansas City School of Medicine, Kansas City, MO 64108, USA
    Prehosp Emerg Care 9:163-6. 2005
  10. doi request reprint Industry relations with emergency medicine graduate medical education programs
    Terry Kowalenko
    Department of Emergency Medicine, University of Michigan, Ann Arbor, MI, USA
    Acad Emerg Med 16:1025-30. 2009

Detail Information

Publications12

  1. ncbi request reprint How fast is the focused assessment with sonography for trauma examination learning curve?
    O John Ma
    Department of Emergency Medicine, Oregon Health and Science University, Portland, Oregon, USA
    Emerg Med Australas 20:32-7. 2008
    ..The present study's objective was to analyse EM resident FAST interpretation accuracy over 18 months...
  2. ncbi request reprint Ultrasound applications in mass casualties and extreme environments
    O John Ma
    Department of Emergency Medicine, Oregon Health and Science University, Portland, OR 97239, USA
    Crit Care Med 35:S275-9. 2007
    ..Ultrasound's portability, reproducibility, accuracy, and ease of use will make it an important diagnostic instrument for future space missions...
  3. pmc Is futile care in the injured elderly an important target for cost savings?
    Ross J Fleischman
    Department of Emergency Medicine, Oregon Health and Science University, Portland, OR, USA
    J Trauma Acute Care Surg 73:146-51. 2012
    ..This study proposes a definition of futile care and quantifies its cost in injured elders...
  4. ncbi request reprint Anechoic stripe size influences accuracy of FAST examination interpretation
    O John Ma
    Department of Emergency Medicine, Truman Medical Center, Kansas City, MO 64108, USA
    Acad Emerg Med 13:248-53. 2006
    ..The objectives were to analyze the influence of anechoic stripe (AS) size on interpretation accuracy by emergency physicians (EPs) and to assess the precision of FAST examination interpretation as a function of EP FAST experience...
  5. pmc The optimum follow-up period for assessing mortality outcomes in injured older adults
    Ross J Fleischman
    Center for Policy and Research in Emergency Medicine, Department of Emergency Medicine, Oregon Health and Science University, Portland, Oregon 97239, USA
    J Am Geriatr Soc 58:1843-9. 2010
    ..To compare mortality rates of hospitalized injured aged 67 and older across commonly used follow-up periods (e.g., in-hospital, 30-day, 1-year) and to determine the postinjury time after which mortality rates stabilize...
  6. doi request reprint Validation of length of hospital stay as a surrogate measure for injury severity and resource use among injury survivors
    Craig D Newgard
    Center for Policy and Research in Emergency Medicine, Department of Emergency Medicine, Oregon Health and Science University, Portland, OR, USA
    Acad Emerg Med 17:142-50. 2010
    ..This project sought to validate LOS as a proxy measure of injury severity and resource use in heterogeneous injury populations...
  7. ncbi request reprint Association between a positive ED FAST examination and therapeutic laparotomy in normotensive blunt trauma patients
    Mark Moylan
    Center for Policy and Research in Emergency Medicine, Department of Emergency Medicine, Oregon Health and Science University, Portland, Oregon 97201 3098, USA
    J Emerg Med 33:265-71. 2007
    ..Among normotensive blunt trauma patients, there was a strong association between a positive FAST and the need for therapeutic laparotomy. Very few normotensive patients with a negative FAST required therapeutic laparotomy...
  8. ncbi request reprint Prospective analysis of the effect of physician experience with the FAST examination in reducing the use of CT scans
    O John Ma
    Department of Emergency Medicine, Truman Medical Center, University of Missouri Kansas City School of Medicine, 2301 Holmes Street, Kansas City, Missouri 64108, USA
    Emerg Med Australas 17:24-30. 2005
    ....
  9. ncbi request reprint Populations at risk for intubation nonattempt and failure in the prehospital setting
    Alex G Garza
    Department of Emergency Medicine, University of Missouri Kansas City School of Medicine, Kansas City, MO 64108, USA
    Prehosp Emerg Care 9:163-6. 2005
    ..The study hypothesis was that these populations were at higher risk of endotracheal intubation failure compared with adult cardiac arrest patients and that paramedics would more frequently defer attempts to intubate these patients...
  10. doi request reprint Industry relations with emergency medicine graduate medical education programs
    Terry Kowalenko
    Department of Emergency Medicine, University of Michigan, Ann Arbor, MI, USA
    Acad Emerg Med 16:1025-30. 2009
    ..In addition, the team used a question-answer format to provide educators and residents with a practical approach to these interactions. The SAEM Board of Directors endorsed the guidelines in June 2009...
  11. ncbi request reprint Survey of emergency medicine resident debt status and financial planning preparedness
    Jeffrey N Glaspy
    Department of Emergency Medicine, Truman Medical Center, University of Missouri Kansas City School of Medicine, Kansas City, MO 64108 2677, USA
    Acad Emerg Med 12:52-6. 2005
    ..The objective of this study was to analyze emergency medicine resident debt status, financial planning actions, and educational experiences for financial planning and debt management...
  12. ncbi request reprint Prehospital dispatch assessment of stroke
    Stefanie R Ellison
    Department of Emergency Medicine, Truman Medical Center, University of Missouri Kansas City School of Medicine, USA
    Mo Med 101:64-6. 2004
    ..Sensitivity for the detection of acute stroke was nearly identical between EMS dispatchers and on-scene paramedics; overall agreement with emergency physician diagnosis was moderate...