Effect-site concentration of propofol for reduction of remifentanil-induced cough.
Kim, JY; Lee, SY; Kim, DH; Park, SK; Min, SK
Anaesthesia, 65(7):697-703, 2010
SUMMARY: This study examined the effectiveness of different propofol infusion target concentrations on cough suppression, during a target-controlled remifentanil infusion. Four hundred patients were randomly assigned to receive propofol target effect-site concentrations of 0, 3.0, 4.5, or 6.0 microgxml(-1). When the propofol effect-site concentration reached the target, remifentanil was administered at a target effect-site concentration of 4.0 ngxml(-1). Episodes of cough were recorded over a 2-min period after remifentanil commencement, and graded as mild (1-2), moderate (3-4), or severe (5 or more). The overall incidence of cough was significantly decreased in by propofol 6.0 microgxml(-1) compared with 0 or 3.0 microgxml(-1) propofol (p < 0.001). The incidence of severe cough was significantly lower with propofol 6.0 microgxml(-1) compared with 3.0 microgxml(-1) (p = 0.03). A propofol target effect-site concentration of 6.0 microgxml(-1) effectively suppressed remifentanil-induced cough when remifentanil was administrated at a target effect-site concentration of 4.0 ngxml(-1).
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