摘要
Although brief ischaemic events make the myocardium tolerant to subsequent prolonged ischaemia, known as ischaemic preconditioning, whether brief ischaemia also affects neural regulation at the in vivo heart remains unknown. We examined the effects of brief ischaemia on myocardial interstitial acetylcholine (ACh) and noradrenaline (NA) levels in anaesthetized cats (n