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Background : For patients with critical condition, healthcare professional need to asses actual body oxygenation as soon as possible. Until recently, the gold standard of this measurement is with blood gas analysis (BGA). Pulse oximetry is very useful by it’s practicable and portable and been expected represent actual body oxygenation condition especially for nonBGA available centre. Objective : To measure pulse oximetry’s oxygen saturation accuracy for patients in shock condition in comparison to gold standard of BGA. Method : This is an observational study and had collected cohort prospective data to acknowledge pulse oximetry accuracy for patients in shock condition based on Mean Arterial Pressure (MAP) <65mmHg who admitted to emergency unit. Result : This study include 39 subjects with mean age 53,36 years old, male composition 53,8% and female 46,2%, dominated by MAP>60mHg about 46,2%, MAP 56-60 about 25,6%, MAP 50-55 about 17,9% and MAP<50 about 10,3%. The mean result of peripheral oxygen saturation with pulse oximetry is 93,35±6,51%, in comparison to arterial saturation of BGA about 98,21±3,50%. The group of MAP<50 mmHg, 50-55 mmHg, 56-60mmHg and >60mmHg in shock condition patients ascertain that there is no difference between oxygen saturation based on pulse oximetry compared to BGA, by no statistical significance difference which p>0.05. Conclusion : Peripheral oxygen saturation based on pulse oximetry in patients with shock condition (MAP < 65mmHg) could represent actual arterial oxygen saturation by BGA as the gold standard.

Pulse Oximetry Effectivity For Measuring Oxygen Saturation In Hypovolemic Shock Patient Compared To Blood Gas Analysis At Rsup H. Adam Malik Medan