2 | METHODS
Patients who were brought to our emergency services due to OHCA and hospitalized in ICU after a successful CPR were investigated retrospectively. Successful CPR was defined as acute respond to the CPR in the emergency department and transfer to the ICU for follow-up. Patients with trauma, systemic infection, intracranial hemorrhage, major surgery within the previous 14 days and malignancy were excluded from the study. Consequently, a total of 102 patients with OHCA were included in this study. Local ethic committee was approved the study design and the study was conducted in full accordance with the Declaration of Helsinki.
Blood samples were obtained routinely immediately after hospital admission. Complete blood cell (CBC) counts were measured with an automated blood cell counter. Neutrophil to lymphocyte ratio (NLR) was calculated as the ratio of neutrophil to lymphocyte. Platelet to lymphocyte ratio (PLR) was calculated as the ratio of platelet to lymphocyte. Also, arterial blood gas sampling and biochemical analyses including serum electrolytes, creatinine, aminotransferases, serum albumin and CRP was obtained from all patients. CAR was calculated as the ratio of CRP to the albumin.
Our study population were divided into two groups as follows: survivor (n = 43) and non-survivor (n = 59) during follow-up. The archive records of all patients were investigated retrospectively, and baseline characteristics, blood gas samples and laboratory parameters were compared between two groups.