Atrioventricular Block Precipitated by Isoproterenol
نویسندگان
چکیده
منابع مشابه
Paroxysmal atrioventricular block precipitated by an atrial premature beat. What is the mechanism?
A 65 year-old woman presented with two episodes of syncope. She developed paroxysmal atrioventricular (AV) block when an ECG was being recorded (Fig. 1). She developed at least one other similar episode. Then, she developed complete AV block with a stable escape ventricular rhythm of about 30 bpm during which an atrial premature beat was conducted (Fig. 2). Isoproterenol was administered which ...
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A family of 28 individuals spanning four generations was investigated because of a finding of complete heart block in five members and the existence of a low degree of atrioventricular (A-V) heart block in a sixth member. The disorder was characterized by 1) adult onset in all, 2) complete A-V heart block in five and first degree A-V heart block in one, 3) sinus bradycardia in three, 4) atrial ...
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As part of routine prenatal care, the obstetrician of a 25-year-old gravida 1, para 0 woman performed fetal heart-rate monitoring at 22 weeks gestational age. The fetal heart rate was 90 bpm, below the expected range of 120 –160 bpm. This finding prompted a subsequent fetal ultrasound and echocardiogram. The ultrasound exam showed no evidence of hydrops. Cardiac anatomy was normal, with 4 appro...
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to the editor: The report by Toff and colleagues on the United Kingdom Pacing and Cardiovascular Events (UKPACE) trial (July 14 issue), 1 evaluating cardiovascular end points in elderly patients with atrioventricular block, showed that the use of dual-chamber pacing to maintain atrioventricular synchrony conferred no survival advantage over the use of single-chamber pacing. These results may be...
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Arrhythmias displaying conduction disturbances consistent with block at more than one level within the atrioventricular conduction system were seen in 36 patients during a two year period in a community hospital. Two levels of block were postulated in each patient; one patient also demonstrated a third level of block. In 24 patients (Type A), there was an integral conduction ratio at the upper ...
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ژورنال
عنوان ژورنال: Annals of Noninvasive Electrocardiology
سال: 2014
ISSN: 1082-720X
DOI: 10.1111/anec.12192