Effects of Left Stellate Ganglion Stimulation on Left Ventricular Synchrony in Dogs.
نویسندگان
چکیده
منابع مشابه
Effects of unilateral stellate ganglion stimulation and ablation on electrophysiologic changes induced by acute myocardial ischemia in dogs.
We recorded direct-current extracellular electrograms simultaneously from 60 left ventricular epicardial sites in 38 alpha-chloralose-anesthetized dogs during repeated, 5 min coronary arterial occlusions. In each dog recordings made during control occlusions were compared with those made in occlusions after, or during, the following interventions on the sympathetic nervous system: left stellate...
متن کاملDifferential response to right and left ansae subclaviae stimulation of early afterdepolarizations and ventricular tachycardia induced by cesium in dogs.
Early afterdepolarizations (EADs) are depolarizing potentials that occur before complete repolarization. They may be important in the acquired and possibly the idiopathic long QT syndrome and associated ventricular tachycardia (VT). The purpose of these experiments was to study in 20 open-chest dogs the effects of sympathetic stimulation on EADs and VT produced with cesium chloride (84 mg/kg i....
متن کاملEffects of stellate stimulation and hypoxia on haemodynamics and coronary circulation.
Authors' synopsis The efsects of left stellate ganglion stimulation on haemodynamics and coronary blood flow were studied in dogs, and compared bcirh hypoxia produced by arterial anoxia. Both left stellate stimulation and hypoxia resulted in an increase in coronary blood , f l o ~ , and myocardial oxygen consumption, but the increment in coronary blood flow iz'as much more pronounced during hyp...
متن کاملStimulation of left stellate ganglion prolongs Q-T interval in patients with palmar hyperhidrosis.
With the advent of transthoracic video-assisted endoscopic electrocautery of the second and the third sympathetic ganglia for the treatment of palmar hyperhidrosis, it is possible to approach the stellate ganglia with ease. To see whether stimulation of stellate ganglia in humans is similar to the case in dogs, we stimulated the sympathetic ganglia in 18 palmar hyperhidrosis patients with a coa...
متن کاملContinuous low-level vagus nerve stimulation reduces stellate ganglion nerve activity and paroxysmal atrial tachyarrhythmias in ambulatory canines.
BACKGROUND We hypothesize that left-sided low-level vagus nerve stimulation (LL-VNS) can suppress sympathetic outflow and reduce atrial tachyarrhythmias in ambulatory dogs. METHODS AND RESULTS We implanted a neurostimulator in 12 dogs to stimulate the left cervical vagus nerve and a radiotransmitter for continuous recording of left stellate ganglion nerve activity, vagal nerve activities, and...
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ورودعنوان ژورنال:
- The American journal of physiology
دوره 207 شماره
صفحات -
تاریخ انتشار 1964