THE operative management of patients with congenital or acquired heart disease is often complicated by the occurrence of ventricular arrhythmias. Bigeminal rhythm or premature ventricular contractions are frequently noted with the induction of anesthesia, with tracheal intubation, during dissection and manipulation of the heart and great vessels, and with nasotracheal aspiration in the postoper...

BACKGROUND Abnormal sarcoplasmic reticulum calcium (Ca) cycling is increasingly recognized as an important mechanism for increased ventricular automaticity that leads to lethal ventricular arrhythmias. Previous studies have linked lethal familial arrhythmogenic disorders to mutations in the ryanodine receptor and calsequestrin genes, which interact with junctin and triadin to form a macromolecu...

THE operative management of patients with congenital or acquired heart disease is often complicated by the occurrence of ventricular arrhythmias. Bigeminal rhythm or premature ventricular contractions are frequently noted with the induction of anesthesia, with tracheal intubation, during dissection and manipulation of the heart and great vessels, and with nasotracheal aspiration in the postoper...

In this paper, the notion of Suzuki type generalized $\mathcal{L}$-contractions is introduced and a new fixed point theorem for such contractions established.

Landesberg, Amir, and Samuel Sideman. Regulation of energy consumption in cardiac muscle: analysis of isometric contractions. Am. J. Physiol. 276 (Heart Circ. Physiol. 45): H998–H1011, 1999.—The well-known linear relationship between oxygen consumption and force-length area or the force-time integral is analyzed here for isometric contractions. The analysis, which is based on a biochemical mode...

We have recently described that after contractions propagate through multicellular cardiac muscle preparations. These propagating contractions are triggered in damaged regions of rat right ventricular trabeculae during relaxation of electrically stimulated twitches. Propagation of triggered contractions has been attributed to calcium ions that diffuse along the preparation, causing calcium-indu...

The role of cardiac nerves in the production of cardiac arrest during surgical anaesthesia on coronary ligated hypoxic heart has been studied. When atropinished coronary ligated dogs were exposed to hypoxia the terminal event was a cardiac asystole in 88% of the dogs. In propranolol treated dogs, or in dogs where sympathetic ganglia upto T6 were bilaterally removed earlier, coronary ligation an...

BACKGROUND Cardiac dysfunction is one of the possible causes of sudden unexpected death in epilepsy (SUDEP). Therefore, it was the objective of this study to evaluate the cardiac and electrocardiographic parameters after seizures induced by maximal electroshock (MES) in Wistar rats. METHODS Electroshock seizures were induced in Wistar rats through a pair of ear-clip electrodes (10 mA at a fre...

Niizeki, Kyuichi, and Yoshimi Miyamoto. Phasedependent heartbeat modulation by muscle contractions during dynamic handgrip in humans. Am. J. Physiol. 276 (Heart Circ. Physiol. 45): H1331–H1338, 1999.—The influence of cardiac phase on the response of the cardiac pacemaker to dynamic hand contraction in eight healthy young men was studied to determine whether heart rate response to muscle contrac...