نتایج جستجو برای: sinus bradycardia
تعداد نتایج: 47526 فیلتر نتایج به سال:
To the Editor: Hantaviruses are enveloped RNA viruses belonging to the family Bunyaviridae (1,2), for which a number of species have been identified, including the Hantaan, Seoul, Puumala, Dobrava-Belgrade, and Sin Nombre viruses (1,2). Each hantavirus is associated with a specific rodent reservoir (1,2). Hantaan virus, found throughout northeastern Asia, causes a life-threatening illness known...
Embolization of the sinus node artery was accomplished in dogs by injecting rapidly hardening vinyl latex into the sinus node artery. Embolization immediately shifted the pacemaker to a junctional focus; however, with time postoperatively, the pacemaker shifted to an atrial site. Variable episodes of pacemaker failure, sinoatrial block, junctional rhythm, wandering atrial pacemaker and idiovent...
The clinical and electrocardiographic findings in five children with the sick sinus syndrome and an otherwise normal heart are described. There were three boys and two girls. Their age at onset of either bradycardia or symptoms ranged from 1 day to 7 years. In one patient, the youngest ever reported with this syndrome, bradycardia was noted before birth. Four children presented with neurologica...
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...
RATIONALE Downregulation of the pacemaking ion channel, HCN4 (hyperpolarization-activated cyclic nucleotide gated channel 4), and the corresponding ionic current, If, underlies exercise training-induced sinus bradycardia in rodents. If this occurs in humans, it could explain the increased incidence of bradyarrhythmias in veteran athletes, and it will be important to understand the underlying pr...
in Newborns To the Editor: In the study by Mazel et al,1 the authors reported that passive transfer of human anti-Ro/SSA and anti-La/SSB autoantibodies into naive pregnant mice induced bradycardia and first-degree AV block in pups, suggesting a possible sinoatrial node involvement. We have observed similar findings in humans. In the last 4 years, we prospectively followed 21 pregnancies in anti...
Using 24-h ambulatory electrocardiography, the RR intervals of all beats were determined in a West Highland white terrier with sick sinus syndrome characterized by long sinus pauses, bradycardia, supraventricular tachycardia (SVT) and varying degrees of atrioventricular (AV) heart block. Distinctive patterns of bradycardia and 1:1, 2:1, 3:1, 4:1 and 5:1 AV block associated with SVT were evident...
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