McLean, Charles E.; Deane, Burton C.
September 1970
Angiology;Sep1970, Vol. 21 Issue 8, p536
Academic Journal
1. The dosage of propranolol needed in the treatment of patients with cardiac arrhythmias or angina poctoris in our study, has depended upon the relief of symptoms, the heart, rate, the degree of fatigue and the blood level attained. 2. A reduction in total dose was not necessary, in the absence of symptoms, unless the heart rate was sustained below 52 beats per minute. 3. Fatigue, in the absence of clinical heart failure, need not signal a reduction in dose unless sustained for two weeks. 4. In this study, a propranolol blood level of .03 �g/ml or higher was associated with the best symptom relief. 5. An increment dose of propranolol every three hours was needed to sustain a blood level of .03 �g/ml or higher in most patients studied. The smallest total daily dose on the q3h schedule for good relief of anginal pain was 80 mgs daily. The average daily dose required for relief of pain was 218 mgs. 6. The apparent half-life of propranolol hydrochloride after the ingestion of one 40 mg tablet is between two and three hours.


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