The antihypertensive and metabolic effects of low and conventional dose cyclopenthiazide in type II diabetics with hypertension.
The antihypertensive efficacy and metabolic effects of cyclopenthiazide 125 micrograms were compared with cyclopenthiazide 500 micrograms in patients with non-insulin dependent diabetes and hypertension in a double blind, randomized crossover study. After a 6-week placebo period 24 patients with non-insulin dependent diabetes mellitus, stabilized on diet or oral hypoglycaemic agents, who had a mean diastolic blood pressure between 90 and 120 mmHg after receiving placebo for 6 weeks were given 125 micrograms or 500 micrograms cyclopenthiazide for 12 weeks. Patients then received placebo for a further 6-week period, following which they received the alternate treatment dosage for 12 weeks. There were no differences between doses in their antihypertensive effects. While 500 micrograms significantly reduced systolic and diastolic blood pressures, only diastolic pressure was significantly reduced by 125 micrograms from pre-treatment values. The higher dose of cyclopenthiazide had greater effects on measures of diabetic control than did the 125 micrograms dose and the rise in blood glucose after 12 weeks' treatment with 500 micrograms was significantly different from pre-treatment values. Cyclopenthiazide 125 micrograms had significantly less effect on triglycerides, potassium and urate, than did 500 micrograms. Cyclopenthiazide 500 micrograms resulted in a significant fall in serum potassium from pre-treatment values. There were no intertreatment differences in the other variables measured. Cyclopenthiazide 125 micrograms is as effective as 500 micrograms in reducing diastolic blood pressure in mildly hypertensive non-insulin dependent diabetic patients. The higher dose had more pronounced adverse effects on glucose control and serum concentrations of triglycerides, potassium and urate.[1]References
- The antihypertensive and metabolic effects of low and conventional dose cyclopenthiazide in type II diabetics with hypertension. Passmore, A.P., Whitehead, E.M., Crawford, V., McVeigh, G.E., Johnston, G.D. Q. J. Med. (1991) [Pubmed]
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