Objective- To compare the effects of xylazine-ketamine and xylazine-thiopental on cardiac rhythm indogs.Design- Experimental study.Animals- 15 mixed-bred, adult dogs of either sex.Procedures- Following premedication with xylazine HCI, either ketarnine HCI or sodium thiopentalwere administered to dogs. Cardiac rhythm was evaluated before as well as 15,30,45, and 60 minutes and3 days after induct...

dried oleander leaves at single lethal dose of 110 mg/kg body weight were administered orally to fivenative female goats. clinical signs of toxicosis in goats began to appear about 1 hr after receiving theoleander and included abdominal pain, ruminal atony and tympany, frequent urination, bradycardia,tachycardia, tachyarrhythmia, depression, weakness and convulsive movement and death at the end...

Congenital heart block (CHB) is associated with high mortality and affects children of mothers with autoantibodies (IgG) to ribonucleoproteins SSB/La and SSA/Ro. IgG from mothers of children with CHB (positive IgG) was used to assess activation patterns in both the right atrium (RA) and right ventricle (RV) of Langendorff-perfused young rabbit hearts. Optical action potentials (AP) were obtaine...

BACKGROUND Sinus node dysfunction (SND) is caused not only by intrinsic sinus node disease, but also by the extrinsic factors. Among the extrinsic factors, autonomic imbalance is most common. Symptomatic SND usually requires permanent pacemaker therapy. However, the clinical characteristics and patient response to medical therapy for hypervagotonic SND have not been properly clarified. MATERI...

BACKGROUND Klinefelter syndrome is the most common genetic cause of male infertility and affects approximately 1 in 500 live births. Although accompanying cardiac disorder is not a specific feature of Klinefelter syndrome, rarely associated anomalies such as mitral valve prolapse, atrial septal defect, ventricular septal defect, tetralogy of Fallot, patent ductus arteriosus, and hypertrophic ob...

BACKGROUND Because of its episodic behavior, the correlation of spontaneous syncope with an abnormal finding can be considered a reference standard. METHODS AND RESULTS We inserted an implantable loop recorder in 111 patients with syncope, absence of significant structural heart disease, and a normal ECG; tilt-testing was negative in 82 (isolated syncope) and positive in 29 (tilt-positive). T...

A new neural network system for classification of the cardiac rhythm is presented in this paper. The system is composed of two neural network classifiers : a morphological classifier cascaded to a timing classifier. While the morphological classifier classify the P and QRS complexes into normal and/or abnormal beats, the timing classifier takes as inputs the information of the morphological cla...