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Biomedical subjects

L Rostás

Publications and source records attributed to L Rostás.

13 recordsLinked to original sources
PubMed1999

Transesophageal pacemaker therapy in atrial flutter after procainamide pretreatment.

Transesophageal atrial stimulation was applied in 56 patients to terminate atrial flutter. Extrastimulation and atrial burst techniques were applied using programmable stimulator (Medtronic 5328) and hexapolar esophageal electrode catheters. Thirty patients were randomized to receive digoxin pretreatment (group A), and 26 patients were randomized to receive procainamide pretreatment (group B). Efficacy of each pretreatment was evaluated by observing the change in the rhythm. In group A, transesophageal pacemaker therapy successfully converted atrial flutter to sinus rhythm in 13 patients and to atrial fibrillation in 14 patients, whereas the arrhythmia remained unchanged in the 3 remaining patients in the digitalized group. In group B, after procainamide pretreatment, sinus rhythm appeared in 19 and atrial fibrillation in 5, and no change was observed in the remaining 2 patients. Procainamide is more efficacious than digoxin (P < 0.05) in facilitating cardioversion by transesophageal stimulation.

Adult↗
PubMed1984

Telemetric evaluation of the atrioventricular conduction system.

A telemetric method was developed to record His-bundle ECG. With this technique the His-potential of ambulatory patients could be continuously monitored. The heart rate, AH intervals and HV intervals were recorded at rest, during exercise and during atrial pacing in ten patients with various arrhythmias. It was found that atrial pacing increased, and exercise, at comparable rates, decreased the AH intervals. The HV intervals did not change. The telemetric method is useful in dynamic evaluation of the atrioventricular conduction system in the clinical practice.

Aged↗
PubMed1982

[Prognosis for patients with myocardial infarct treated with a transitory pacemaker during the 1st year].

The authors investigated the occurrence of mortality during hospitalisation (first 4 weeks) and in the following period (from the 5th week till the end of the first year) on 70 patients with acute myocardial infarction subject to temporary pacemaker therapy due to bradyarrhythmia and/or conduction disorders. Progression of conduction disorder has been commonly observed during hospitalisation, mortality amounted to 43 per cent. Almost each of the conduction disorders has been discontinued by means of prophylactic pacemaker therapy. Despite the successful pacemaker therapy during the acute phase one third of the patients died within one year. It was found by the authors that the mortality in both periods showed close relationship not with the character of the block, but with the localisation and the severity of the infarction.

Adult↗
PubMed1980

Wenckebach type H-V block induced by digitalis intoxication.

The atrioventricular conduction system was studied by means of His bundle records in a preuremic patient during digitalis intoxication. A second degree A-V block of Wenckebach periodicity could be detected in the His-Purkinje system. Localization of the block has been found remarkable since, according to hitherto clinical studies, digitalis-induced Wenckebach block had been present commonly in the atrioventricular node.

Digoxin↗