PMID: 8468109Mar 1, 1993Paper

Effect of hydroxyzine and meperidine on arterial blood gases in patients with chronic obstructive pulmonary disease

International Journal of Clinical Pharmacology, Therapy, and Toxicology
E K ZsigmondJ G Shively

Abstract

Hydroxyzine is frequently used to tranquilize chronic obstructive pulmonary disease patients, who may be concomitantly receiving narcotic analgesics. Therefore, its effect alone and in combination with meperidine on arterial blood gases and ventilation at rest were evaluated in 44 patient volunteers, who gave informed consent. Hydroxyzine, 1.5 mg/kg i.v. caused no significant decrease in PaO2 and pH, no increase in PaCO2 at 5, 10, 20, 30 and 60 min post-infusion (n = 13, mean age = 63.4 years). Meperidine, 1.5 mg/kg i.v. caused a significant (p < 0.001) reduction in PaO2 for 20 min with concomitant increase in PaCO2 (n = 14; mean age = 49.4 years). The combination of the same doses of hydroxyzine with meperidine i.v. caused no greater decrease in PaO2 or in pH or increase in PaCO2 than did meperidine alone (n = 17; mean age = 52.6 years), indicating no greater ventilatory depression with the combination than with meperidine alone. The lack of significant pH decreases at 30 and 60 min further corroborates no potentiation of meperidine by hydroxyzine. In conclusion, hydroxyzine, even when given through the i.v. route in excess of the maximum i.m. therapeutic dose, caused no changes in PaO2, PaCO2 or pH in chronic obstructive pulm...Continue Reading

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