Venous air embolism. Diagnosis by spontaneous right-sided contrast echocardiography. This report describes the definitive diagnosis of venous air-embolism by documentation of spontaneous echo contrast in the right cardiac chambers following removal of a jugular venous catheter in a patient with hepatic failure. This complication was potentiated by the presence of concurrent hepatic coagulopathy which prejudiced effective hemostasis at the central venous puncture site. 