Supine hypotensive syndrome caused by intra-abdominal mass: a case report.

An obese woman who presented with 3 separate intra-abdominal masses developed a supine hypotensive syndrome following induction of general anesthesia. The hypotension was corrected by positioning the patient in a left lateral tilt and by releasing intra-abdominal pressure. Following decompression of the vena cava, arterial and central venous pressure rose and remained at a high level. Urine output was poor until IV furosemide was administered.