title: Exercise related cardiac arrest in amateur athletes on the tennis court.
abstract: OBJECTIVE
  The aim of this study was to study exercise-related cardiac arrests on the tennis court and investigate the impact of early initiation of cardiopulmonary resuscitation on survival rate and outcome.
  
  
  METHODS
  This study was based on the cardiac arrest registry of the Department of Emergency Medicine at the General Hospital Vienna in Austria. Between February 1993 and April 2010 non-professional athletes were identified, who experienced exercise-related cardiac arrest on the tennis court. The analysis was accomplished using descriptive statistics. Results are presented as mean±standard-deviation or median and interquartile range (IQR).
  
  
  RESULTS
  The subjects (n=27) were predominantly male (96%) with a median age of 58 years; 52% of all patients had underlying cardiovascular risk factors. All cardiac arrests were witnessed. Bystander CPR was documented in 17 cases (63%). Median time from collapse to initiation of CPR was 1(IQR 0-2) minute. Ventricular fibrillation was the initial rhythm in 25 patients (93%) and in 3 an automated external defibrillator was used by bystanders. Twenty-four patients (89%) had return of spontaneous circulation before admission to the hospital and four (15%) followed verbal commands thereafter. The survival rate at 6 months was 82% with 20 patients (74%) having favourable neurologic outcome.
  
  
  CONCLUSIONS
  Cardiac arrest on the tennis court is a predominantly witnessed event with a respectively high rate of bystander CPR, which reflects in a high successful survival rate.
authors.affiliation: Department of Emergency Medicine, Medical University of Vienna, Vienna, Austria.
authors.forename: Peter
authors.initials: P
authors.lastname: Stratil
authors.forename: Fritz
authors.initials: F
authors.lastname: Sterz
authors.forename: Moritz
authors.initials: M
authors.lastname: Haugk
authors.forename: Christian
authors.initials: C
authors.lastname: Wallmüller
authors.forename: Andreas
authors.initials: A
authors.lastname: Schober
authors.forename: David
authors.initials: D
authors.lastname: Hörburger
authors.forename: Christoph
authors.initials: C
authors.lastname: Weiser
authors.forename: Matthias
authors.initials: M
authors.lastname: Stöckl
authors.forename: Christoph
authors.initials: C
authors.lastname: Testori
authors.forename: Danica
authors.initials: D
authors.lastname: Krizanac
authors.forename: Christof
authors.initials: C
authors.lastname: Havel
mesh_terms: D000368:Aged; D056352:Athletes; D001317:Austria / Q000453:epidemiology; D016887:Cardiopulmonary Resuscitation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D058687:Out-of-Hospital Cardiac Arrest / Q000401:mortality / Q000628:therapy*; D012189:Retrospective Studies; D012307:Risk Factors; D015996:Survival Rate; D013715:Tennis; D013997:Time Factors; D016896:Treatment Outcome