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KMID : 1155520120070040355
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Anesthesia and Pain Medicine
2012 Volume.7 No. 4 p.355 ~ p.358
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The impact of anthrometric measurements on hypotension during spinal anesthesia for cesarean delivery: comparison of body weight, body height, body mass index, and abdominal circumference
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Song In-Ae
Shin Woo-Kyung
Hyun Sun-Ji
Park Seong-Joo
Ryu Jung-Hee
Jeon Young-Tae
Hwang Jung-Won
Do Sang-Hwan
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Abstract
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Background:Hypotension is a common complication of spinal anesthesia for cesarean delivery. The incidence and severity of hypotension is reported higher compared with other surgeries due to aortocaval compression. We evaluated whether body weight, body height, body mass index (BMI) and abdominal circumference effected on the incidence of hypotension and ephedrine requirement. Methods:A total of 55 parturients undergoing elective cesarean delivery were enrolled in this prospective observational study. Preeclampsia or eclampsia was excluded. Abdominal circumference, body weight, body height were assessed before anesthesia. Spinal anesthesia was conducted in the right lateral position using 8 mg of 0.5% hyperbaric bupivacaine and 15 ?g of fentanyl. Blood pressure was measured before anesthesia and at 1 min interval after intrathecal injection. Nausea was assessed during spinal anesthesia. Hypotension was defined that blood pressure decreased below 80% of baseline value and ephedrine was given if blood pressure dropped below 70% (severe hypotension). Results:The total incidence of hypotension was 65% (36/55) and ephedrine was administered in 38% (21/55) of parturients. Except height, abdominal circumference, body weight and body mass index were associated with the incidence of hypotension (P ＜ 0.05). However, severe hypotension requiring ephedrine (P = 0.001, OR = 1.16, [95% CI 1.04?1.30]), ephedrine requirement (P = 0.001, R = 0.43) and nausea (P = 0.026, R = 0.31) were significantly related only with abdominal circumference. Conclusions:Abdominal circumference of parturients may be a good parameter to predict both of the incidence and the severity of hypotension during spinal anesthesia for cesarean delivery. (Anesth Pain Med 2012; 7: 355∼358)
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KEYWORD
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Abdominal circumference, Body mass index, Body weight, Cesarean section, Hypotension, Spinal anesthesia
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