Der Mythos der 15°-Linksseitenlagerung zur Entlastung der Vena cava inferior

Abstract

AbstractPositioning the pregnant patient in her third trimester in a 15° left lateral tilt position with the rationale to reduce inferior vena cava (IVC) compression is a longstanding practice of both obstetric and anesthesia care. Recent data from MRI imaging studies have challenged this traditional dogma, since the IVC was found to remain compressed at a 15° angle, with a tilt of at least 30° necessary to provide a certain relief of the vessel. However, even the 15° tilt is regularly underestimated by visual judgement and improperly executed, but comes with several disadvantages without adding any benefit on fetal outcome. Current evidence supports all efforts to cease the dogma of a 15° left lateral position for its lack of effectiveness and instead put emphasis on proven measures, such as volume coloading and the timely administration of vasopressors.