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  • Title: [Continuous 24-hour registration of intra-arterial pressure in basal states and during therapy with a fixed slow-release oxprenolol-chlorthalidone combination, administered once a day].
    Author: Fariello R, Alicandri C, Boni E, Montini E, Zaninelli A, Agabiti-Rosei E, Motolese M, Muiesan G.
    Journal: G Ital Cardiol; 1984 Feb; 14(2):121-6. PubMed ID: 6714549.
    Abstract:
    Intra-arterial 24 hour blood pressure (BP) recording (OXFORD MEDILOG) was carried out in 10 patients with essential hypertension, 6 males and 4 females, aged between 41 and 58 years, 3 at WHO stage 1 and 7 at stage 2, in basal conditions and after 6 weeks of treatment with a fixed combination of 160 mg of slow-release oxprenolol and 20 mg of chlorthalidone per tablet (tb). The fixed combination was given once daily, in the morning, at the dosage of 1 tb, which was increased to 2 tbs o.d. after the first 2 weeks in 6 patients. Computer calculated mean BP and heart rate (HR) values from each consecutive hour of the day were obtained in all patients. Hourly trend of BP and HR were plotted and circadian variations were thus determined. Treatment with fixed combination o.d. significantly reduced systolic and diastolic BP, compared to pretreatment values, throughout of the 24 hours (p less than 0.01; p less than 0.001), without altering the circadian rhythm. Before and after 6 weeks of treatment, a bicycle exercise test was performed in 8 patients, who reached 85% of the maximal predicted HR. Pretreatment resting mean BP (+/- SD) was 190 +/- 31/108 +/- 10 mmHg (HR: 68 +/- 9 b/min) and those during the last minute of exercise 242 +/- 29/125 +/- 5 mmHg (HR: 147 +/- 13 b/min); posttreatment resting BP was 161 +/- 20/88 +/- 7 mmHg (HR: 58 +/- 7 b/min) and at peak exercise, 212 +/- 16/106 +/- 7 mmHg (p less than 0.025 for the systolic pressure; p less than 0.001 for the diastolic pressure).(ABSTRACT TRUNCATED AT 250 WORDS)
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