• Atıf Bayramoğlu, Erdal Tekin, Engin Kurt, Kamber Kaşali, and Nezahat Kurt.
• Alanya Alaaddin Keykubat University, Faculty of Medical, Department of Emergency - Alanya, Turkey.
• Rev Assoc Med Bras (1992). 2024 Jan 1; 70 (8): e20240155e20240155.

ObjectiveThe aim of this study was to investigate whether there is a difference in serum nitric oxide levels between patients who return spontaneously after cardiopulmonary resuscitation and those who do not. We also examined the potential of using serum nitric oxide levels as a marker to make an accurate decision about patient survival.MethodsWe included 100 consecutive patients who were brought to the emergency clinic due to cardiac arrest. Blood samples were taken from these patients at admission, 30 min after admission, and when resuscitation was terminated.ResultsWe found that there was a significant difference in NO1 and NO3 values between the group of patients who did not return after cardiopulmonary resuscitation and the group in which spontaneous circulation returned. The NO1 value was significant in the receiver operating characteristic (ROC) analysis, while the NO3 value was not. A higher NO1 value provided a higher rate of survival.ConclusionOur findings suggest that nitric oxide may be a useful parameter to support the decision about patient survival. A higher NO1 value is associated with a better prognosis and survival rate. Therefore, serum nitric oxide levels may be a suitable indicator to support the decision-making process regarding patient survival.

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