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OBSTETRIC ANESTHESIA

Aortocaval Compression in Pregnancy: The Effect of Changing the Degree and Direction of Lateral Tilt on Maternal Cardiac Output

Department of Anaesthesia, Leeds General Infirmary, Leeds, United Kingdom

Address correspondence and reprint requests to Dr. J. H. Bamber, Department of Anaesthesia, Box 93, Addenbrooke’s NHS Trust, Hills Rd., Cambridge CB2 2QQ. Address e-mail to james.bamber{at}addenbrookes.anglox.nhs.uk

IMPLICATIONS: Using thoracic bioimpedance to measure maternal cardiac output, we were unable to demonstrate any benefit from increasing the magnitude of lateral table tilt. This implies that it is unnecessary to use extremes of lateral table tilt in healthy pregnancy although this may not apply to women with cardiac compromise or regional anesthesia.

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