Influence of inhalation anaesthetics on bronchomotor tone--animal experiments on vago-vagal reflex bronchoconstriction.

Animal experiments showed that the inhalation anaesthetic agents enflurane and halothane caused neither a direct increase in bronchial resistance nor an indirectly mediated increase in the susceptibility of the bronchial system to acetylcholine. There are, therefore, no contraindications to the clinical use of enflurane and halothane in cases of obstructive airway diseases, nor does the use of these agents present an increased risk for these patients.