Relationship between laboratory findings and the outcome of cardiopulmonary arrest.
OBJECTIVE
The aim of this study was to investigate whether laboratory findings on arrival may be useful in predicting the outcome of out-of-hospital cardiopulmonary arrest (CPA).


METHODS
Between January 2005 and September 2007, a medical chart review was retrospectively performed for CPA. The individual medical records were reviewed for the following data: background of CPA, arterial blood gas, cell blood count, serum biochemical, and cerebral performance category (CPC) 1 month after the CPA. The subjects were divided into patients with a CPC ranging from 3 to 5 (CPC 3-5 group) and from 1 to 2 (CPC 1-2 group).


RESULTS
The total protein, platelets, pH, and Po(2) in the CPC 1-2 group tended be higher than those in the CPC 3-5 group. The Pco(2), potassium, phosphorus, and ammonia in the CPC 1-2 group tended be lower than those in the CPC 3-5 group. However, there were no factors independently associated with the outcome by multivariate analysis.


CONCLUSIONS
Some of the biochemical-hematologic parameters demonstrate significant changes concerning the outcome. However, initial blood work cannot be used to make clinical decisions because there are no factors independently associated with the outcome.
Yanagawa
Youichi
Y
Department of Traumatology and Critical Care Medicine, National Defense Medical College, Saitama, Japan. yanagawa@ndmc.ac.jp
Sakamoto
Toshihisa
T
Sato
Hiroki
H