The authors retrospectively examined their experience with amlodipine in the treatment of hypertension in 32 pediatric-aged patients, ranging in age from 4 to 26 years, with blood pressure (BP) readings greater than the 90th percentile for age. Amlodipine was used as the sole therapy in 9 patients and with other antihypertensive therapy in 23 patients. Additional antihypertensive drugs used in combination with amlodipine included beta-adrenergic antagonists, ACE inhibitors, and diuretics. The starting dose of amlodipine was 0.13+/-0.09 mg/kg/d. The dose was increased in 20 of 32 patients to 0.23+/-0.13 mg/kg/d. Amlodipine was administered once daily to 26 patients and twice daily to 6 patients. After therapy with amlodipine was initiated, the systolic BP decreased from 141+/-15 to 132+/-9 mm Hg (P=0.01) and the diastolic BP decreased from 84+/-16 to 77+/-8 mmHg (P=0,03). There were a total of 2145 follow-up BP readings. The follow-up systolic BP was lower than the initial BP prior to starting amlodipine 59% of the time and the diastolic BP was lower than the initial BP 61% of the time. The follow-up systolic BP was lower than the 90th percentile predicted for age 33% of the time after starting amlodipine and the diastolic BF was lower than the 90th percentile for age 52% of the time. Adverse effects were noted in 4 of the 32 patients (12.5%). These included fatigue (n=2), dizziness (n=1), and ankle edema (n=1). Amlodipine therapy was discontinued in only 1 patient (the patient with ankle edema). Given its efficacy, the low incidence of adverse effects, and availability as a suspension, amlodipine is an effective agent for the treatment of hypertension in the pediatric-aged patient.
The present study has confirmed, in a general practice population, that low-dose bendroflumethiazide (bendroflumethiazide 1.25-2.5 mg/day) in combination with potassium chloride is a well tolerated and efficacious first-line treatment for patients with mild to moderate essential hypertension.
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