Alfentanil infusions: relationship between pharmacokinetics and pharmacodynamics in man.

Abstract:

:Fourteen fit young patients undergoing body surface surgery received an infusion of alfentanil at either 50 or 100 micrograms kg-1 hr-1 to supplement nitrous oxide anaesthesia. The alfentanil infusion was continued for two hours post-operatively at the lower rate of 20 micrograms kg-1 hr-1. Resting ventilation, carbon dioxide responsiveness and pain scores were measured post-operatively. Values for clearance and elimination half life were similar to data following single doses of alfentanil but showed considerable interindividual variation. However, there was a greater systemic clearance (P = 0.02) when determined using the post-infusion decay data compared with that calculated during anaesthesia (527 ml min-1 compared with 434 ml min-1). This is in accord with observations for other intravenous drugs.

journal_name

Eur J Anaesthesiol

authors

O'Connor M,Prys-Roberts C,Sear JW

subject

Has Abstract

pub_date

1987-05-01 00:00:00

pages

187-96

issue

3

eissn

0265-0215

issn

1365-2346

journal_volume

4

pub_type

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