Haemodynamic Effects of Pharmacological Denervation of the Heart at Rest and During Exercise in Patients with Chronic Lung Disease

Abstract
Heart function was depressed at rest and during moderate exercise after pharmacological denervation in patients with chronic lung diseases. It is suggested that resting heart rate resulted from tonic sympathetic and parasympathetic influences, and that the withdrawal of parasympathetic tone contributed to increased performance of the heart during exercise.

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