G Rohr1, P Reimnitz, P Blanke. 1. Mannheim Faculty of Clinical Medicine, University of Heidelberg, Germany.
Abstract
OBJECTIVE: To present the efficacy and tolerability of a new oral dosage form of the calcium antagonist nitrendipine compared to nifedipine capsules in patients with hypertensive emergency. DESIGN: Multicenter randomized double blind clinical study. SETTING: 23 study centres (hospitals) in Germany. PATIENTS: 161 patients between 20 and 70 years with acutely elevated blood pressure (systolic 200-250 mmHg, diastolic between 110-140 mmHg) with and without concomitant clinical symptoms. INTERVENTIONS: Double blind treatment with 10 mg nifedipine or 5 mg nitrendipine. Nifedipine was administered as capsules, nitrendipine was given from a small plastic tube (vial), containing 1 ml alcoholic solution. Every patient received in addition to the test medication a placebo corresponding to the other product. Patients with insufficient treatment after 45 min were given either an additional capsule of 10 mg nifedipine or a further vial containing 5 mg nitrendipine according to their group and maintaining the double dummy procedure. MEASUREMENTS AND RESULTS:Blood pressure and heart rate were measured repeatedly during 4 h, before and 90 min after beginning of the treatment a 12 channel resting ECG was recorded. At 45 min after administration the blood pressure had fallen significantly from 216.0/117.4 mmHg to 170.0/93.3 mmHg under nifedipine and from 216.9/117.3 mmHg to 177.4/94.4 mmHg under nitrendipine. 61.6% of the nifedipine patients and 58.8% of the nitrendipine patients had already reached blood pressure values < 180/100 mmHg after 45 min and in both groups 83% of these patients were still in this limit at the end of the observation period after 4 h. Tolerability was very good in both groups. CONCLUSION: The new dosage form of nitrendipine (vial with 1 ml of alcoholic solution) represents an alternative in the treatment of hypertensive emergency.
RCT Entities:
OBJECTIVE: To present the efficacy and tolerability of a new oral dosage form of the calcium antagonist nitrendipine compared to nifedipine capsules in patients with hypertensive emergency. DESIGN: Multicenter randomized double blind clinical study. SETTING: 23 study centres (hospitals) in Germany. PATIENTS: 161 patients between 20 and 70 years with acutely elevated blood pressure (systolic 200-250 mmHg, diastolic between 110-140 mmHg) with and without concomitant clinical symptoms. INTERVENTIONS: Double blind treatment with 10 mg nifedipine or 5 mg nitrendipine. Nifedipine was administered as capsules, nitrendipine was given from a small plastic tube (vial), containing 1 ml alcoholic solution. Every patient received in addition to the test medication a placebo corresponding to the other product. Patients with insufficient treatment after 45 min were given either an additional capsule of 10 mg nifedipine or a further vial containing 5 mg nitrendipine according to their group and maintaining the double dummy procedure. MEASUREMENTS AND RESULTS: Blood pressure and heart rate were measured repeatedly during 4 h, before and 90 min after beginning of the treatment a 12 channel resting ECG was recorded. At 45 min after administration the blood pressure had fallen significantly from 216.0/117.4 mmHg to 170.0/93.3 mmHg under nifedipine and from 216.9/117.3 mmHg to 177.4/94.4 mmHg under nitrendipine. 61.6% of the nifedipinepatients and 58.8% of the nitrendipinepatients had already reached blood pressure values < 180/100 mmHg after 45 min and in both groups 83% of these patients were still in this limit at the end of the observation period after 4 h. Tolerability was very good in both groups. CONCLUSION: The new dosage form of nitrendipine (vial with 1 ml of alcoholic solution) represents an alternative in the treatment of hypertensive emergency.
Authors: N Takekoshi; E Murakami; H Murakami; S Matsui; K Masuya; M Nomura; S Fujita; S Tsuji; T Chatani; J Emoto; H Tsugawa; A Hashimoto Journal: Jpn Circ J Date: 1981-07