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Biomedical subjects

S S Grigorov

Publications and source records attributed to S S Grigorov.

At least 37 records · Page 2Linked to original sources
PubMed1982

[Significance of retrograde excitation in treating arrhythmias by means of electrical stimulation of the heart].

The paper presents the results of electric heart stimulation in patients with sick sinus syndrome accompanied by atrial retrograde excitation. The retrograde excitation was found in 9 of 85 patients (it was observed in the spontaneous rhythm in 3 cases and in right ventricle stimulation in 6 cases). All the patients underwent right ventricle stimulation. In 6 observations it proved to be an effective measure to prevent (in 4 cases) and terminate (in 2 cases) supraventricular tachycardia paroxysms. In one case the retrograde excitation caused hemodynamic disorders that made one change the stimulation point (the electrode was implanted into the right atrium).

Adult↗
PubMed1982

[Use of P-synchronized electrical stimulation of the heart for preventing supraventricular tachycardia paroxysms due to accessory conduction pathways].

The paper deals with a possibility to apply P-synchronized ventricular stimulation for the prevention of frequent, drugirresponsive paroxysms of supraventricular tachycardia (SVTC) due to the accessory conduction pathways. During the electrophysiologic study of 5 patients with SVTC paroxysms, the presence of Kent's bundle conducting the impulses in a retrograde way has been revealed. The observed mechanisms of SVTC occurrence (delayed His-Purkinye system conduction in 2 patients and atrioventricular nodal conduction in 3 patients) enabled its prevention to be achieved by a method of ventricular electric stimulation in the P-synchronized regimen with a shortened atrioventricular delay in the impulse conduction. While performing this type of stimulation tachycardia episodes were completely terminated, and it was impossible to provoke them by different types of stimulation.

Adult↗
PubMed1982

[Electric stimulation of the heart in ventricular tachycardia: achievements and prospects].

Cardiac electrostimulation was conducted in 19 patients to prevent and control paroxysmal ventricular tachycardia. In 8 of those, an attempt was made to prevent tachycardia by continuous endocardial ventricular stimulation in the demand regimen. In 11 patients, a radio-frequency stimulator was implanted, its electrode positioned in the right ventricle to control current tachycardiac attacks. A 3-5-second stimulation at frequencies of 180-220 impulses per minute was sufficient to control the attack in 8 of the patients, while programmed ventricular stimulation only was needed to produce the effect in 3 patients.

Heart Conduction System↗
PubMed1980

[Electrical stimulation of the heart in the sick sinus syndrome].

The results of electrical stimulation of the heart in 49 patients with the sick sinus syndrome are discussed. Continuous endocardial stimulation of the ventricle was applied in 30 patients. Implantation of two cardiac stimulators was performed on 5 patients, one for frequent stimulation of the atrium (switched on outside) and the other (biocontrolled) for stimulation of the ventricle. Fourteen patients who had no episodes of loss of consciousness and no signs of circulatory insufficiency did not undergo operation. There were two fatal outcomes in the postoperative period, which were not linked directly with the use of electrostimulation. No complications of a thromboembolic character were encountered.

Adolescent↗
PubMed1978

[Stimulation of the heart in tachycardia].

The results of decelerating stimulation of the heart in 52 patients with tachysystolic complications of various etiology were studied. Paired and combined stimulation of the ventricles induced artificial rhythm in 41 patients (78.9%), in 5 patients (9.6%) the paroxysmus of tachycardia were arrested when the electrode was being inserted into the right ventricle. Favourable results were produced in 29 patients (70.7%).

Adolescent↗
PubMed1978

[Indications for electric stimulation of the heart in disorders of atrioventricular conductivity].

The authors analyse the indications for electric stimulation of the heart in disorders of atrioventricular conduction on the basis of personal experience (1000 odd electric stimulations). Two main factors, the frequency and severity of Morgangni-Adams-Stokes attacks and the state of hemodynamics, should be taken into account when the indications for electric cardiac stimulation are considered. In choosing the therapeutical measures and methods, due consideration should also be given to the etiology of the block. Morgagni-Adams-Stokes attacks are an absolute indication for permanent electric stimulation. The authors believe that as a method for the management of atrioventricular block electric stimulation of the heart has no absolute contraindications.

Evaluation Studies as Topic↗