Influence of obesity on spinal analgesia with isobaric 0.5% bupivacaine.
In an unblinded study 50 patients undergoing cystoscopic procedures received a spinal anaesthetic of plain 0.5% bupivacaine 4 ml administered in the sitting position at the L3-4 space. There was a correlation between the height of blockade assessed by pinprick analgesia and the degree of obesity of the patients measured by weight, weight/height, and weight/height2. Using this dose of spinal anaesthetic agent, high blockade may be anticipated in obese patients.
W J
WJ
McCulloch
D G
DG
Littlewood
D000368:Aged; D000775:Anesthesia, Spinal; D002045:Bupivacaine / Q000008:administration & dosage* / Q000494:pharmacology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000503:physiopathology*; D013046:Specific Gravity
D002045:Bupivacaine