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Can I donate plasma if I am taking propranolol? 

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Propranolol (2 or 4 mg i. v.)
Plasma elimination of propranolol is reduced with decreased liver blood flow observed in congestive heart failure or during chronic propranolol therapy itself.
These results suggest that factors other than decreased enzyme activity (i. e., impaired uptake) contribute to lower propranolol extraction in cirrhosis.
This effect may reflect noradrenergic depletion because the beta-noradrenergic antagonist propranolol (10 mg/kg, i. p.)
Results indicated that patients taking propranolol (n = 65) were significantly lower in intensity of Type A behavior than patients not taking propranolol (n = 23).
If there is no motive to donate other than accomplishing one’s duty to others, thus, there must be a choice (to donate).
Under these circumstances, I believe that propranolol is not the best medication to use.
The present method should be useful for monitoring propranolol concentrations in plasma and plasma water during drug therapy and for pharmacokinetic study of propranolol.
It is concluded that pretreatment levels of plasma renin activity can predict the antihypertensive response to propranolol and spironolactone.
Regional anesthesia is preferred over general anesthsia in patients taking propranolol.
The fall in MMFR was reversed by salbutamol while the patients were taking metoprolol, but not while they were taking propranolol, suggesting that propranolol has greater affinity than metoprolol for the bronchial beta adrenergic receptors.
Signs and symptoms of hyperthyroidism are lacking in patients taking large doses of propranolol.
It has been suggested that the hypotensive effect of propranolol is due to a central inhibition of sympathetic activity, since i. v.
Furthermore, it is concluded that i. c. v.-injected propranolol rapidly leaks to the peripheral bloodstream, thereby causing effects through a peripheral action.
3 We conclude that in most single doses studies on relationships between plasma concentrations and effects (beta-adrenoceptor blockade) it is not necessary to quantitate (+)- and (-)-propranolol levels separately since total (+/-) plasma propranolol levels varied much more than the ratio between (-)- and (+)-propranolol.

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