Complete heart block frequently requires emergency pacing to restore systemic perfusion. We report the case of a 3-yr-old girl undergoing interventional atrial septal defect closure who suffered from transient complete heart block with circulatory arrest. Transthoracic mechanical pacing for more than 3 min provided temporary support, sustaining an adequate cardiac output until sinus rhythm resu...

BACKGROUND AND PURPOSE Cerebral blood flow during cardiopulmonary resuscitation is inadequate to meet cerebral metabolic demand. Adrenergic agonists improve cerebral blood flow, but clinical trials of increased doses in adults have not shown improved outcome from cardiac arrest. This may be due to adverse beta-agonist-mediated effects. The purpose of this study was to determine the effect of an...

provided the original work is properly cited. CC The posterior fossa is surrounded by bone and tentorium, and an infratentorial brain tumor can compress normal brain structures, thus eliciting various symptoms. Surgery for an infratentorial tumor may stimulate deep brain structures, which can lead to cardiac autonomic responses. We report a brief sinus arrest immediately before dural closure fo...

In a retrospective study of patients admitted for acute myocardial infarction (AMI) during six years, sinus node dysfunction (SND) was detected in 20 (1.04%). Twelve had persistent sinus bradycardia, 11 sinotrial block or sinus arrest and six bradytachy syndrome. Symptoms occurred in 17 patients, 12 of whom required temporary pacing for periods up to three weeks. A permanent cardiac pacemaker w...

Developing better methods for risk stratification for tachyarrhythmic sudden cardiac remains a major challenge for physicians and scientists. Since the transition from sinus rhythm to ventricular tachycardia/fibrillation happens by different mechanisms in different people, it is unrealistic to think that a single measure will be adequate to provide a good index for risk stratification. We analy...

We report four non-insulin-dependent diabetic (NIDDM) patients accompanied by a unique combination of sick sinus syndrome (SSS) and hyperinsulinemia of unknown etiology. SSS of all four cases was due to sinus arrest in association with paroxysmal atrial fibrillation (Rubenstein-III). Of special interest is that one patient showed a high prevalence of SSS and NIDDM among her close relatives. Hyp...

Left ventricular reflexes have in the past been investigated in anaesthetised animals, generally using an open chest technique. We have studied the degree of bradycardia occurring during coronary arteriography in 200 patients with a view to localising the origin of the ventricular reflexes. We have correlated the decrease of sinus rate with the anatomical distribution and integrity of the coron...

INTRODUCTION Sinus arrest, atrio-ventricular block, supraventricular, and ventricular arrhythmias have been reported in patients with sleep apnea syndrome. The arrhythmias usually occur during sleep and contribute to the cardiovascular morbidity and mortality, and the treatment of sleep apnea usually results in the resolution of the brady- arrhythmias. Weight loss, continuous positive airway pr...

We present a case of sinus node arrest leading to symptomatic junctional bradycardia from oral phenytoin toxicity, which is a rare presentation. Our patient had no prior cardiac history and was on phenytoin therapy for seizure disorder. Although bradycardia is more commonly associated with intravenous phenytoin and there were few case reports of bradycardia with oral phenytoin reported, the lit...