Monophasic action potentials in man.
نویسندگان
چکیده
منابع مشابه
Intracardiac electrode detection of early ischaemia in man.
We have evaluated an intracardiac technique for the study of the electrophysiological patterns of early or subendocardial ischaemia in man. Simultaneous recordings of the paced endocardial evoked response and monophasic action potentials were obtained during pacing stress testing in 10 patients with reversible myocardial ischaemia. Early patterns of change occurred in both these recordings in r...
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Nine patients with different supraventricular tachyarrhythmias were treated orally with amiodarone (a Class 3 antiarrhythmic drug) according to a standardized protocol. Eight patients had subjective or objective beneficial antiarrhythmic effects from the drug. The treatment was discontinued in 2 patients due to corneal opacifications. In all patients right atrial monophasic action potentials we...
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The right ventricular repolarisation phase was studied electrophysiologically after an injection of 15 mg metoprolol in 16 healthy volunteers. Eight of them were restudied after chronic treatment with 400 mg metoprolol daily for five weeks. The assessment of the repolarisation time included ventricular effective refractory periods, monophasic action potential duration, and the QT interval measu...
متن کاملAtrial repolarization in man. Effect of beta-receptor blockade.
Right atrial monophasic action potentials were recorded using a bipolar suction electrode technique in 29 patients without any present or past atrial arrhythmias. The monophasic action potential duration measured at the level ofgo per cent repolarization, ranged in these patients between 2IO and 4I3 msec, with a tendency to become shorter at higher heart rates, which was not, however, statistic...
متن کاملAlternans in human atrial monophasic action potenial.
This report describes the case of a patient with a supraventricular tachycardia with a ventricular rate of 109/min and no visible P waves in the electrocardiogram. The recording of the monophasic action potential of the right atrium disclosed an atrial tachycardia with a rate of 218/min. There was an alternans of the phase 2 of repolarisation in the action potential. This report emphasises the ...
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عنوان ژورنال:
- Circulation
دوره 38 2 شماره
صفحات -
تاریخ انتشار 1968