Research Topics
| Yan MaSummaryAffiliation: Hospital for Special Surgery Country: USA Publications
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Detail Information
Publications
Beyond repeated-measures analysis of variance: advanced statistical methods for the analysis of longitudinal data in anesthesia researchYan Ma
Research Division, Hospital for Special Surgery, Weill Medical College of Cornell University, New York, NY 10021, USA
Reg Anesth Pain Med 37:99-105. 2012..The goal of this article was to increase awareness of the advantages of modern statistical methods and promote their use in anesthesia research...- Comparative in-hospital morbidity and mortality after revision versus primary thoracic and lumbar spine fusionYan Ma
Department of Public Health, Hospital for Special Surgery, Weill Medical College of Cornell University, 535 East 70th St, New York, NY 10021, USA
Spine J 10:881-9. 2010.... - Perioperative morbidity and mortality after anterior, posterior, and anterior/posterior spine fusion surgeryStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, Weill Medical College of Cornell University, New York, NY 10021, USA
Spine (Phila Pa 1976) 36:1867-77. 2011..Analysis of population-based national hospital discharge data collected for the National Inpatient Sample... 
Trends in in-hospital major morbidity and mortality after total joint arthroplasty: United States 1998-2008Meghan Kirksey
Department of Anesthesiology, New York Presbyterian Hospital Weill Cornell, New York, NY, USA
Anesth Analg 115:321-7. 2012..The use of total joint arthroplasties is increasing worldwide. In this work we aim to elucidate recent trends in demographics and perioperative outcomes of patients undergoing total hip (THA) or total knee arthroplasty (TKA)...- Metabolic syndrome and lumbar spine fusion surgery: epidemiology and perioperative outcomesStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, New York, NY 10021, USA
Spine (Phila Pa 1976) 37:989-95. 2012..Analysis of the National Inpatient Sample database from 2000 to 2008... - Bilateral total knee arthroplasty: risk factors for major morbidity and mortalityStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, Weill Cornell Medical College, New York, NY, USA
Anesth Analg 113:784-90. 2011..Our objective was to determine the incidence and patient-related risk factors for major morbidity and mortality among patients undergoing BTKA... - In-hospital patient falls after total joint arthroplasty: incidence, demographics, and risk factors in the United StatesStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, New York, New York 10021, USA
J Arthroplasty 27:823-8.e1. 2012..In-hospital mortality, complications, and cost were higher in patients sustaining IF. Given the associated morbidity, mortality, and increased cost, resources should be allocated to minimize the risk of IF in this population... - Epidemiology and risk factors for perioperative mortality after total hip and knee arthroplastyStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, New York, 10021 NY, USA
J Orthop Res 30:1811-21. 2012..Our data can be used to assess the risk for perioperative mortality and to develop targeted intervention to decrease such risk... - Comparative safety of simultaneous and staged anterior and posterior spinal surgeryPeter G Passias
Division of Spine Surgery, Department of Orthopaedic Surgery, Hospital for Special Surgery Weill Medical College of Cornell University, New York, NY, USA
Spine (Phila Pa 1976) 37:247-55. 2012..Analysis of population-based national hospital discharge data collected for the Nationwide Inpatient Sample... - Perioperative mortality after lumbar spinal fusion surgery: an analysis of epidemiology and risk factorsMatthias Pumberger
Department of Orthopedic Surgery, Hospital for Special Surgery, New York, NY 10021, USA
Eur Spine J 21:1633-9. 2012..Analysis of the Nationwide Inpatient Sample (NIS) from 1998 to 2008... - Mortality of patients with respiratory insufficiency and adult respiratory distress syndrome after surgery: the obesity paradoxStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, New York, NY 10021, USA
J Intensive Care Med 27:306-11. 2012.... - Increased in-hospital complications after primary posterior versus primary anterior cervical fusionStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, Weill Medical College of Cornell University, 535 East 70th Street, New York, NY 10021, USA
Clin Orthop Relat Res 469:649-57. 2011..Since for some patients either approach might be reasonable it is important to know the relative perioperative risks for decision-making... - National trends in anterior cervical fusion proceduresSatyajit Marawar
Department of Orthopedic Surgery, Division of Spine Surgery, Hospital for Special Surgery, Weill Medical College of Cornell University, New York, NY, USA
Spine (Phila Pa 1976) 35:1454-9. 2010..Population-based database analysis... - Predictors for moderate to severe acute postoperative pain after total hip and knee replacementSpencer S Liu
Department of Anesthesiology, Hospital for Special Surgery and Weill Cornell Medical College, 535 East 70th St, New York, NY 10021, USA
Int Orthop 36:2261-7. 2012..We undertook this multi-centre cross-sectional study to identify preoperative risk factors for moderate to severe pain after total hip (THR) and knee (TKR) replacement... - Factors influencing unexpected disposition after orthopedic ambulatory surgeryStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, New York, NY 10021, USA
J Clin Anesth 24:89-95. 2012..To analyze whether patient characteristics, ambulatory facility type, anesthesia provider and technique, procedure type, and temporal factors impact the outcome of unexpected disposition after ambulatory knee and shoulder surgery... - Association of perioperative use of nonsteroidal anti-inflammatory drugs with postoperative myocardial infarction after total joint replacementSpencer S Liu
Department of Anesthesiology, Hospital for Special Surgery, and Weill College of Medicine of Cornell University, New York, NY 10021, USA
Reg Anesth Pain Med 37:45-50. 2012..Thus, we performed this single-center observational cohort study to determine any association between NSAID use and postoperative myocardial infarction (POMI)... - The effect of low versus high tidal volume ventilation on inflammatory markers in healthy individuals undergoing posterior spine fusion in the prone position: a randomized controlled trialStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, New York, NY 10021, USA
J Clin Anesth 24:263-9. 2012..To evaluate the effect of ventilation strategy on markers of inflammation in patients undergoing spine surgery in the prone position... - Nerve stimulator versus ultrasound guidance for placement of popliteal catheters for foot and ankle surgeryDaniel Maalouf
Department of Anesthesiology, Hospital for Special Surgery, New York, NY 10021, USA
J Clin Anesth 24:44-50. 2012..To determine whether ultrasound guidance improves the quality of continuous popliteal block when compared with a nerve stimulator after major foot and ankle surgery... - Perioperative mortality in patients with pulmonary hypertension undergoing major joint replacementStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, New York, NY 10021, USA
Anesth Analg 111:1110-6. 2010..In this study, we evaluated the incidence and risks of perioperative morbidity and mortality in patients with PHTN undergoing primary total hip arthroplasty (THA) and total knee arthroplasty (TKA)... 
Demographics, outcomes, and risk factors for adverse events associated with primary and revision total hip arthroplasties in the United StatesStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery Weill Medical College of Cornell University, New York, NY, USA
Am J Orthop (Belle Mead NJ) 39:E72-7. 2010..Additional studies are warranted to determine causal relationships...- In-hospital surgical site infections after primary hip and knee arthroplasty--incidence and risk factorsLazaros A Poultsides
Department of Orthopedic Surgery, Division of Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, Weill Medical College of Cornell University, New York, New York, USA
J Arthroplasty 28:385-9. 2013..Data relied on coded information and could not differentiate between superficial or deep infection, or capture patients readmitted for SSI, and therefore may have underestimated the true incidence of SSI... - Meta-analysis of re-operation, nonunion, and infection after open reduction and internal fixation of patella fracturesChristopher J Dy
Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York, USA
J Trauma Acute Care Surg 73:928-32. 2012..Furthermore, gaining a better understanding of the factors that contribute to re-operation and complications will help to generate hypotheses and research agendas to address these difficult problems... - The metabolic syndrome in patients undergoing knee and hip arthroplasty: trends and in-hospital outcomes in the United StatesAlejandro Gonzalez Della Valle
Department of Orthopedic Surgery, Hospital for Special Surgery, New York, NY, USA
J Arthroplasty 27:1743-1749.e1. 2012..Given the increasing rates of MetS and its association with higher risk for major complications among total joint arthroplasty recipients, further research into the impact of this disease complex is warranted... - Pulmonary circulatory changes after bilateral total knee arthroplasty during regional anesthesiaAnna Maria Bombardieri
Department of Anesthesiology, Hospital for Special Surgery, New York, NY 10021, USA
J Clin Anesth 25:4-8. 2013..To monitor the pulmonary hemodynamics of patients undergoing bilateral total knee arthroplasty (BTKA) intraoperatively and up to 24 hours following surgery... - Comparative utility of centrally versus peripherally transduced venous pressure monitoring in the perioperative period in spine surgery patientsAnna Maria Bombardieri
Careggi Hospital, University of Florence, Florence, Italy
J Clin Anesth 24:542-8. 2012..To compare central venous pressure (CVP) with peripheral venous pressure (PVP) monitoring during the intraoperative and postoperative periods in patients undergoing spine surgery... - A cross-sectional survey on prevalence and risk factors for persistent postsurgical pain 1 year after total hip and knee replacementSpencer S Liu
Department of Anesthesiology, Hospital for Special Surgery and Weill Cornell Medical College, New York, NY 10021, USA
Reg Anesth Pain Med 37:415-22. 2012..We surveyed a variety of practices and patients and also correlated persistent pain with health-related quality-of-life outcomes... - Changes in anesthesia-related factors in ambulatory knee and shoulder surgery: United States 1996-2006Stavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, Weill Medical College of Cornell University, 535 E 70th St, New York, NY 10021, USA
Reg Anesth Pain Med 36:327-31. 2011..We sought to characterize temporal changes in factors surrounding ambulatory orthopedic surgery and anesthesia... - Cartilage injury after acute, isolated anterior cruciate ligament tear: immediate and longitudinal effect with clinical/MRI follow-upHollis G Potter
Department of MRI, Hospital for Special Surgery, New York, NY 10021, USA
Am J Sports Med 40:276-85. 2012..Anterior cruciate ligament (ACL) tears have been implicated in the development of osteoarthritis. Limited data exist on longitudinal follow-up of isolated ACL injury... - Perioperative outcomes after unilateral and bilateral total knee arthroplastyStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, Weill Medical College of Cornell University, New York, New York, USA
Anesthesiology 111:1206-16. 2009..The authors sought to study differences in perioperative outcomes between unilateral and BTKA and to further compare BTKAs performed during the same versus different operations during the same hospitalization... - Perioperative inflammatory response in total knee arthroplasty patients: impact of limb preconditioningStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, 535 E 70th St, New York, NY 10021, USA
Reg Anesth Pain Med 35:412-6. 2010.... - Dynamic contact mechanics of radial tears of the lateral meniscus: implications for treatmentAsheesh Bedi
MedSport, University of Michigan, Ann Arbor, Michigan 48106, USA
Arthroscopy 28:372-81. 2012..To characterize the effect of radial tears (RTs) of the lateral meniscus and their subsequent treatment (inside-out repair, partial meniscectomy) on joint contact mechanics during simulated gait... - Aspirin for elective hip and knee arthroplasty: a multimodal thromboprophylaxis protocolEttore Vulcano
Department of Orthopaedic Surgery, Hospital for Special Surgery and Weill Medical College of Cornell University, 535 East 70th Street, New York, NY 10021, USA
Int Orthop 36:1995-2002. 2012..We determined the 90-day rate of venous thromboembolism (VTE), other complications and mortality in patients who underwent primary elective hip and knee replacement surgery with multimodal thromboprophylaxis... - Complications after flexor tendon repair: a systematic review and meta-analysisChristopher J Dy
Division of Hand and Upper Extremity Surgery, Hospital for Special Surgery, New York, NY 10021, USA
J Hand Surg Am 37:543-551.e1. 2012..The purpose of this study was to determine the incidence of these complications and the potential contributory factors within the published literature... - Multivariate meta-analysis: a robust approach based on the theory of U-statisticYan Ma
Research Division, Hospital for Special Surgery, New York, NY 10021, USA
Stat Med 30:2911-29. 2011..We discuss ideas for future research based on U-statistic for testing significance of between-study heterogeneity and for extending the work to meta-regression setting... - Risk of postoperative hypoxemia in ambulatory orthopedic surgery patients with diagnosis of obstructive sleep apnea: a retrospective observational studySpencer S Liu
Department of Anesthesiology, Hospital for Special Surgery, Weill College of Medicine of Cornell University, 535 East 70th Street, New York, NY 10021, USA
Patient Saf Surg 4:9. 2010..Our OSA patients undergoing ambulatory-type orthopedic procedures are monitored overnight in the PACU, thus we reviewed patient records to determine incidence of complications... - Perioperative pulmonary outcomes in patients with sleep apnea after noncardiac surgeryStavros Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, Weill Medical College of Cornell University, 535 East 70th St, New York, NY 10021, USA
Anesth Analg 112:113-21. 2011.... - Perioperative pulmonary circulatory changes during bilateral total hip arthroplasty under regional anesthesiaStavros G Memtsoudis
Department of Anesthesiology, Hospital for Special Surgery, New York, NY 10021, USA
Reg Anesth Pain Med 35:417-21. 2010.... - Differences between sexes in lower extremity alignment and muscle activation during soccer kickRobert H Brophy
Motion Analysis Laboratory, Hospital for Special Surgery, New York, NY, USA
J Bone Joint Surg Am 92:2050-8. 2010..The purpose of this study was to test the hypothesis that females have different lower-extremity alignment and muscle activation patterns than males during the soccer kick... - A prospective survey of patient-controlled epidural analgesia with bupivacaine and clonidine after total hip replacement: a pre- and postchange comparison with bupivacaine and hydromorphone in 1,000 patientsSpencer S Liu
Department of Anesthesiology, Hospital for Special Surgery and Weill Cornell Medical College of Cornell University, 535 East 70th Street, New York, NY 10021, USA
Anesth Analg 113:1213-7. 2011..We performed this prospective survey to evaluate analgesia and the side effect profile in total hip replacement patients before and after a systematic change from PCEA with bupivacaine/hydromorphone to bupivacaine/clonidine... - Range of motion and function are similar in patients undergoing TKA with posterior stabilised and high-flexion insertsAamer Malik
Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
Int Orthop 34:965-72. 2010..Patients with a preoperative ROM of at least 120° showed similar results. Our study found that one year after surgery, patients who underwent TKA with a PS or an HF insert achieved similar flexion, ROM, and function...