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Acta Anaesthesiol Scand · Apr 1989
Randomized Controlled Trial Comparative Study Clinical TrialIntravenous administration of isosorbide dinitrate attenuates the pressor response to laryngoscopy and tracheal intubation.
- Y Hatano, R Imai, K Komatsu, and K Mori.
- Department of Anesthesia, Kyoto University Hospital, Japan.
- Acta Anaesthesiol Scand. 1989 Apr 1; 33 (3): 214-8.
AbstractIn order to evaluate the effect of isosorbide dinitrate (ISDN), administered as a bolus intravenous injection, on the circulatory response to tracheal intubation, mean arterial pressure (MAP), and heart rate (HR) in response to laryngoscopy for 30 s followed by tracheal intubation were compared in patients not receiving ISDN (control) and receiving 40 micrograms/kg or 80 micrograms/kg of ISDN 45 s before starting laryngoscopy. Each group consisted of 10 patients undergoing elective surgery. Forty-five seconds after starting laryngoscopy, MAP was significantly (P less than 0.01) lower in patients receiving 80 micrograms/kg ISDN than in those receiving no or 40 micrograms/kg ISDN. HR increased to a similar extent in the three groups. These results indicate that a bolus injection of ISDN (80 micrograms/kg) is a simple, practical and highly effective means of attenuating the hypertensive response to direct laryngoscopy and tracheal intubation.
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