5 years ago

The Influence of Body Mass Index on Sensorimotor Block and Vasopressor Requirement During Spinal Anesthesia for Elective Cesarean Delivery

Ngaka, T.C., Coetzee, J.F., Dyer, R.A.
(Anesth Analg. 2016;123(6):1527–1534) General anesthesia for cesarean delivery (CD) in morbidly obese patients is associated with significantly increased maternal and fetal risk. Neuraxial anesthesia using local anesthetics and opioids is preferred. Recent studies have suggested that the dose requirement for CD spinal anesthesia (SA) is lower in obese patients than in nonobese patients. However, the authors of this study hypothesized that obesity does not have a clinically important effect on vasopressor requirements or block height. In the present study, they compared responses in patients with widely differing body mass indices (BMIs) to an identical dose of spinal bupivacaine 10 mg and fentanyl 10 μg.
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