Effect of imipramine on norepinephrine and blood pressure in enuretic boys.
The effect of imipramine, desmethylimipramine, and methscopolamine on blood pressure (BP) and plasma norepinephrine (NE) was measured in enuretic boys in a double-blind, placebo-controlled study. Measurements were obtained on the thirteenth day of medication (75 mg at bedtime). The tricyclic drugs induced a rise in diastolic BP as well as an increase in plasma NE but there was no significant relationshhip between the increments in plasma NE and BP. The plasma concentration of drug correlated with the drug-induced BP rise. This is the fifth study to demonstrate a hypertensive effect of tricyclic drugs in children in contrast to the systolic hypotension usually seen in adult patients. It is not clear from our data whether children have different cardiovascular compensatory reflexes or whether they experience a greater stimulant effect from the drug.
D001794:Blood Pressure / Q000187:drug effects*; D002648:Child; D002986:Clinical Trials as Topic; D003891:Desipramine; D004311:Double-Blind Method; D004775:Enuresis / Q000503:physiopathology*; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D007099:Imipramine; D008297:Male; D009638:Norepinephrine / Q000097:blood*; D011187:Posture; D012602:Scopolamine Derivatives
D012602:Scopolamine Derivatives; D007099:Imipramine; D003891:Desipramine; D009638:Norepinephrine