title: Comparison of end-tidal carbon dioxide levels with cardiopulmonary resuscitation success presented to emergency department with cardiopulmonary arrest.
abstract: OBJECTIVE
  To measure end-tidal carbon dioxide pressure (PetCO2) in preset interval in order to evaluate the efficiency of cardiopulmonary resuscitation (CPR) performed on patients in cardiopulmonary arrest, evaluate the validity of PetCO2 in predicting the mortality and finally assess the PetCO2 levels of the patients in cardiopulmonary arrest based on the initial presenting rhythm.
  
  
  METHODS
  This prospective study was conducted at the Ankara Training and Research Hospital on patients who presented with cardiopulmonary arrest. Standard ACLS (Advanced Cardiac Life Support) protocols were performed. Patients were categorized in two groups based on their rhythms as Ventricular Fibrillation and Asystole. Patients' PetCO2 values were recorded.
  
  
  RESULTS
  PetCO2 levels of the Return of Spontaneous Circulation (ROSC) group in the 5th, 10th, 15th and 20th minutes were significantly higher compared to the exitus group (p<0.001). In distinguishing ROSC and exitus, PetCO2 measurements within 5-20 minute intervals showed highest performance on the 20th and lowest on the 5th minutes.
  
  
  CONCLUSIONS
  PetCO2 values are higher in the ROSC group. During the CPR, the most reliable time for ROSC estimation according to PetCO2 values is 20th minute. None of the patients who had PetCO2 levels less than 14 mmHg survived.
authors.affiliation: Emine Akinci, Emergency Medicine Department, Kecioren Training and Research Hospital, Ankara, Turkey.
authors.forename: Emine
authors.initials: E
authors.lastname: Akinci
authors.affiliation: Hayri Ramadan, Emergency Medicine Department, Ankara Training and Research Hospital, Ankara, Turkey.
authors.forename: Hayri
authors.initials: H
authors.lastname: Ramadan
authors.affiliation: Yucel Yuzbasioglu, Emergency Medicine Department, Ankara Training and Research Hospital, Ankara, Turkey.
authors.forename: Yucel
authors.initials: Y
authors.lastname: Yuzbasioglu
authors.affiliation: Figen Coskun, Emergency Medicine Department, Ankara Training and Research Hospital, Ankara, Turkey.
authors.forename: Figen
authors.initials: F
authors.lastname: Coskun
keywords: Cardiopulmonary Resuscitation; PetCO2