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Original Article

Effect of acute selective beta-1-adrenoceptor blockade on hormonal and cardiovascular response to insulin-induced hypoglycaemia in insulin-dependent diabetic patients

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Pages 69-74 | Received 16 Apr 1981, Accepted 20 Oct 1981, Published online: 17 Mar 2010
 

Abstract

The hormonal and cardiovascular responses to intravenous (i.v.) insulin were studied in 16 insulin-dependent normotensive diabetic patients after acute injection of selective beta-1-adrenoceptor blocking agents. The lowest blood glucose levels were not affected by beta-1-adrenoceptor blockade while the time for reaching nadir was significantly reduced. Plasma adrenaline levels increased significantly during selective beta-1-adrenoceptor blockade. Plasma noradrenaline, glucagon and human growth hormone levels, however, remained unaffected. The insulin-induced tachycardia was not prevented by the beta-1-blockade, and the mean arterial blood pressure was unchanged. The ability to recognize the symptoms of insulin-induced hypoglycaemia persisted in all patients, although less pronounced in nine of them. We suggest that selective beta-1-adrenergic blocking agents may be employed without risk in the treatment of hypertensive insulin-dependent diabetic patients.

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