Bupropion is a non-nicotinic drug used in smoking cessation therapy. However, its acute effects remain unclear. In this study, we investigated the effects of bupropion on hemodynamic parameters in pentobarbital-anesthetized mongrel dogs. Bupropion administered either in bolus injections (3 or 6 mg/kg, i.v.) or in cumulative doses of 0.01, 0.1, 1, 3 and 10 mg/kg showed, in both studies, a significant increase of mean pulmonary arterial pressure and pulmonary vascular resistance index. These results show that bupropion can elevate the pulmonary pressure. Further investigations should be done to test this effect in smokers with chronic obstructive pulmonary disease.
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