A sliding intravenous dose schedule for clonidine in hypertensive patients.
Cumulative doses of clonidine were administered intravenously to 8 hypertensive patients to a maximal dose of 100 mug or a blood pressure fall to normal. There was a reduction in mean arterial pressure of 35.6 mm Hg (p less than 0.001), accompanied by a decrease in heart rate of 11.8 bpm (p less than 0.001). There was also a significant linear relationship between the reduction in blood pressure and the intravenous log dose of clonidine with 6.5-fold difference in delta MAP/dose  potency. There was no correlation between the baseline blood pressure and the slopes of dose-blood pressure response curves or the reduction in mean arterial pressure; the rate of the decline of the hypotensive effect of clonidine varied widely between patients and was not related to baseline blood pressure.
D000328:Adult; D001794:Blood Pressure / Q000187:drug effects; D002986:Clinical Trials as Topic; D003000:Clonidine / Q000008:administration & dosage* / Q000494:pharmacology / Q000627:therapeutic use; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D005260:Female; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D006973:Hypertension / Q000188:drug therapy* / Q000503:physiopathology; D007275:Injections, Intravenous; D008297:Male; D008875:Middle Aged; D013997:Time Factors
D003000:Clonidine