Runaway pacemaker results from pacemaker malfunction and is characterized by sudden increases in the stimulus rate above the set upper rate limit of the pacemaker. Here we report the case of a patient with wide QRS complex tachycardia who was admitted to the emergency unit and diagnosed with runaway pacemaker.

Permanent cardiac-pacemaker therapy is widely recognized as beneficial in the treatment of various types of symptomatic bradycardia. However, the seasonal distribution of pacemaker implantation has never been discussed. The purpose of this study was to investigate the seasonal distribution of pacemaker implantation in a large population of patients with symptomatic bradycardia. The study popula...

conclusions mothers with sle should be screened and closely followed up during pregnancy for the development of fetal atrioventricular (av) block. case presentation a term infant with fetal bradycardia, detected at the 23rd gestational age, was diagnosed with chb due to nls and was successfully treated with a permanent epicardial pacemaker. the patient was reported here due to rarity of the pro...

The accuracy with which a circadian pacemaker can entrain to an environmental 24-h zeitgeber signal depends on (a) characteristics of the entraining signal and (b) response characteristics and intrinsic stability of the pacemaker itself. Position of the sun, weather conditions, shades, and behavioral variations (eye closure, burrowing) all modulate the light signal reaching the pacemaker. A sim...

Circadian pacemaker neurons contain a molecular clock that oscillates with a period of approximately 24 hr, controlling circadian rhythms of behavior. Pacemaker neurons respond to visual system inputs for clock resetting, but, unlike other neurons, have not been reported to transmit rapid signals to their targets. Here we show that pacemaker neurons are required to mediate a rapid behavior. The...

When we made a detailed examination with TTE, we saw that the transvenous temporary pacing was not in the jugular vein. The suprasternal view showed the lead of the pacemaker in the arcus aorta (Fig. 3A). The localization of the pacemaker lead was seen in the right ventricle by fluoroscopy in the RAO. But, we were sure the localization of lead in the left ventricle when we was seen by fluorosco...

BACKGROUND Naringenin (NRG) is a common dietary polyphenolic constituent of fruits. NRG has diverse pharmacological activities, and is used in traditional medicine to treat various diseases including gastrointestinal (GI) disorders. Interstitial cells of Cajal (ICCs) are pacemaker cells of the GI tract. In this study, the authors investigated the effects of NRG on ICCs and on GI motility in vit...

In a rate-stable pacemaker, pacemaker rate reflects battery voltage level and should remain constant or be slightly depleted with time in a linear fashion until failure occurs. Linear regression techniques are therefore particularly suited to the analysis of pacemaker rate data. Data on model 8114/8114A Starr-Edwards pacemakers followed at the University of Oregon Health Sciences Center were st...