A three minutes supine position test reveals higher risk of spinal anesthesia induced hypotension during cesarean delivery. An observational study.

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SAP; systolic arterial pressure. Hb; hemoglobin concentration. BMI; body mass index. DAP; diastolic arterial pressure. MAP; mean arterial pressure. HR; heart rate. SV; stroke volume. CO; cardiac output. SVR; systemic vascular resistance Objectives Course Objective Cesarean delivery is performed under spinal anesthesia, and vasodilation is the main cause for a drop in blood pressure. The compression of the aorta and inferior vena cava by the gravid uterus is of additional clinical importance. Hypotension may occur during cesarean delivery even if prophylactic infusion of phenylephrine is practiced. We have tested if a 3 minute supine observation, can identify a subset of women with decreasing systolic arterial pressure (SAP) under spinal anesthesia.. We performed a prospective observational study at Oslo University Hospital on healthy pregnant women for planned cesarean delivery.