title: Abdominal oxygen saturation for monitoring return of spontaneous circulation in out-of-hospital cardiac arrest using near infrared spectrophometry.
abstract: OBJECTIVE
  We used near-infrared spectrophotometry to assess the initial and final abdominal and cerebral saturations during cardiopulmonary resuscitation (CPR) of patients with out-of-hospital cardiac arrest to determine if there is a correlation between increase in these saturation values and return of spontaneous circulation.
  
  
  METHODS
  We evaluated 34 patients with out-of-hospital cardiac arrest without witnesses brought to our emergency department. Abdominal and cerebral saturations were measured using near-infrared spectrophotometry from the start of CPR. Cardiopulmonary resuscitation was performed for a maximum of 30 minutes. The effect of abdominal saturations in patients with or without spontaneous circulation restored through CPR was then assessed.
  
  
  RESULTS
  Thirty-four patients (17 males + females) with a mean age of 63.06 ± 11.66 years were included in the study. A significant correlation was determined between increase in abdominal saturations measured at the start and end of CPR and the return of spontaneous circulation (P < .001). A good positive correlation was also identified between abdominal saturation and return of spontaneous circulation.
  
  
  CONCLUSIONS
  Patients with increased abdominal and cerebral saturation values have a higher survival rate after appropriate CPR. This noninvasive measurement system and monitoring of patients during CPR may be a good method of predicting return of spontaneous circulation and assessing abdominal perfusion.
authors.affiliation: Department of Emergency Medicine, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey. Electronic address: drasimkalkan@hotmail.com.
authors.forename: Asim
authors.initials: A
authors.lastname: Kalkan
authors.affiliation: Department of Emergency Medicine, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey.
authors.forename: Ozlem
authors.initials: O
authors.lastname: Bilir
authors.affiliation: Department of Emergency Medicine, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey.
authors.forename: Gokhan
authors.initials: G
authors.lastname: Ersunan
authors.affiliation: Department of Biostatistics, Faculty of Medicine, Antalya University, Antalya, Turkey.
authors.forename: Deniz
authors.initials: D
authors.lastname: Ozel
authors.affiliation: Department of Emergency Medicine, Diyarbakir Education and Research Hospital, Diyarbakir, Turkey.
authors.forename: Mahmut
authors.initials: M
authors.lastname: Tas
authors.affiliation: Department of Cardiovascular Surgery, Siyami Ersek Education and Research Hospital, Istanbul, Turkey.
authors.forename: Mehmet Erdem
authors.initials: ME
authors.lastname: Memetoglu
mesh_terms: D000005:Abdomen / Q000098:blood supply*; D000368:Aged; D016887:Cardiopulmonary Resuscitation / Q000379:methods*; D054022:Cerebrum / Q000098:blood supply*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D058687:Out-of-Hospital Cardiac Arrest / Q000628:therapy*; D010092:Oximetry / Q000379:methods; D010100:Oxygen / Q000032:analysis*; D020127:Recovery of Function; D019265:Spectroscopy, Near-Infrared / Q000379:methods*
chemical_list: D010100:Oxygen