Isotonic contractions recorded both before and during poststimulation potentiation in the toad isolated ventricle (Bufo marinus) revealed that the phenomenon of poststimulation potentiation was not altered by the presence or absence of the catechol amines, or by the specific amine antagonist, DCI. Similarly the inhibitors, sodium fluoride and sodium iodoacetate, were without effect. Changes in ...

Patients and methods We performed a prospective, observational study of nonconsecutive, non-trauma, adult, out of hospital cardiac arrest (OHCA) patients. This study conducted in emergency department of single tertiary university hospital. Echo performed every 2 minute simultaneously with pulse check within 10 second throughout the arrest, which was managed by the usual advanced cardiac life-su...

Congenital ventricular diverticulum (CVD) in adults is a rare cardiac malformation, which includes fibrous type congenital ventricular aneurysm (CVA). CVA is often clinically asymptomatic and shows no abnormality in the electrocardiogram or chest X-ray. However, some cases of sudden death resulting from ventricular tachycardia, cardiac embolism or ventricular rupture have been reported. Therefo...

BACKGROUND/AIM Carbamazepine, a widely used antiepileptic drug that has been used for the treatment of both partial and generalized seizures, for trigeminal neuralgia, as a mood stabilizer and for treatment of neuropathic pain syndromes, may have negative chronotropic and dromotropic effects on the cardiac conduction system. DESCRIPTION OF CASE We report a case of cardiac syncope due to atria...

This work is dedicated to the study of cardiac rhythm. It results from a collaboration with the Cardiology and Neurology Departments at Liège University Hospital. The applications considered are essentially twofold: on the one hand, prognosis regarding the health of patients suffering from congestive heart failure, through studying long range correlations and scale invariance in their cardiac r...

At around embryonic day 9, the primitive heart of a mouse embryo undergoes spectacular alterations within 24 hours. We created mice harboring an nls-lacZ gene in place of connexin45, which encodes the only known gap junction protein in the primitive heart before embryonic day 9, using the Cre-loxP system. Connexin45-deficient mice died of heart failure at around embryonic day 10. They initiated...

• Numerous studies of cardiac muscle mechanics have produced contradictory conclusions. The present paper discusses a few salient points about cardiac muscle mechanics, but it is not a critical review of the literature such as that recently published by Jewell and Blinks (1). An analysis of ventricular contraction is also presented; we hope that it will stimulate fresh thought about the relatio...

1. Cardiovascular diseases most commonly occur in the elderly and are a frequent cause of disability or death. However, the effect of age itself on cardiac function is not well understood. 2. Studies in both human and animal hearts indicate that contractile function is unaffected by age while at rest. However, the ability to increase cardiac contractile force during strenuous activities such as...

BACKGROUND Premature cardiac contractions are associated with increased morbidity and mortality. Though experts associate premature atrial contractions (PACs) and premature ventricular contractions (PVCs) with caffeine, there are no data to support this relationship in the general population. As certain caffeinated products may have cardiovascular benefits, recommendations against them may be d...

Evidences indicate that deposition of amyloid beta peptides (Aβs) plays an important role in the pathogenesis of Alzheimer disease. Aβs may influence cardiovascular system and ileum contractions. But the effect of amyloid beta peptide 22-35 (Aβ22-35) on cardiovascular functions and contractions of ileum has not been studied. Therefore, the present study aimed to investigate the possible effects...