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Biomedical subjects

A Incze

Publications and source records attributed to A Incze.

At least 19 recordsLinked to original sources
PubMed1976

An assay for selecting high risk population for gastric cancer by studying environmental factors.

Gastric cancer mortality incidence data registered in two different areas of Eastern Transylvania (Roumania) were reported related to 325,000 inhabitants from the period of 1951-1972. The findings were compared to some geographical environmental factors deriving from an area of 13,300 km with 905,700 inhabitants. A 2-3.5 times larger incidence of gastric cancer (75-140 per 100,000/year) was found in some selected geographical areas of the intermontane depressions of Gheorgheni and Ciuc in comparison to hilly area of Transylvanian Tableland. The difference might be explained by some unknown environmental gastric cancer risk factors. Of the natural factors, the presence of magmatic substrata shows a significant degree of correlation. The main pedological factor seems to be badly drained pseudoglyied podzolic and peaty soils of low pH and high content of organic matter. Sofs drinking waters also may be involved as risk factor. High altitude, cold climate determining a restricted assortiment of cultivated plants, the successive production of vegetal and animal food on the same soil for livelong periods and several generations, especially in isolated rural areas, seem to represent gastric cancer risk factors. According to authors' opinion a survey of the high-risk population selected on the basis of the environmental factors, especially of the persons suffering from gastric disorders considered today possible precursors of gastric cancer, may offer some progress in detecting early gastric malignancy in the future.

Climate↗
PubMedDate not supplied

The prognostic value of late ventricular potentials for sudden death.

Sixty patients of whom 51 with old myocardial infarction--30 with late ventricular potentials and 30 without--were followed up for 5 years. The late ventricular potentials were recorded using an original method. During the follow-up period, in the group, with late ventricular potentials, sudden death was recorded in 6 patients and episodes of ventricular tachycardia in 2. No sudden death occurred in the patients without late ventricular potentials. The prognostic value of this simple, noninvasive technique is emphasized.

Death, Sudden, Cardiac↗
PubMedDate not supplied

Intracardiac electrical discharge in terminating atrial fibrillation.

A new intracavitary technique for internal defibrillation in atrial fibrillation is presented. The discharge takes place between the distal electrodes of the catheter placed in the right atrium and a thoracic paddle. Four cases are discussed, and the indications for this type of defibrillation are considered. Internal defibrillation can be done when, for other purposes, an electrode catheter is already placed in the right atrium.

Aged↗
PubMedDate not supplied

Preatrial activity recorded by intracavitary and transthoracic techniques.

Two methods to record preatrial activity, that is, sinus node potential are presented. One, during right atrial catheterization through an electrode catheter, and the other, using transthoracic recordings with a high amplification and derivation of the electric signals. The sinus node potential duration represents the sino-atrial conduction time (SACT), a useful parameter for the sinus node function evaluation.

Atrial Function↗
PubMedDate not supplied

Chest-wall and transesophageal stimulation in the functional evaluation of patients with permanent pacemakers.

For the functional estimation of artificial pacemakers, we have used two techniques: chest-wall stimulation and transesophageal stimulation. Transesophageal stimulation was always effective in inhibiting the generator, and it was used when chest-wall stimulation was ineffective. These two tests can be easily performed and are of remarkable usefulness in the follow-up of patients with permanent pacemaker.

Cardiac Pacing, Artificial↗
PubMedDate not supplied

A simple bedside technique in the study of the WPW syndrome.

A simple method for the study of the WPW syndrome, which can be performed at the patient's bedside, is presented. Using standard ECG, vagal maneouvers, ajmaline test, precordial mapping, vectorcardiography, electrode catheters positioned in the right atrium and esophageal catheters, the site of accessory pathways, and the complex arrhythmias occurring in these patients can be understood and medically treated.

Adult↗
PubMedDate not supplied

Three patients with branch to branch reentrant ventricular tachycardia. Diagnostic and therapeutic considerations.

Three patients with repetitive episodes of relatively slow rate (170 beats per minute) ventricular tachycardia, with right bundle branch block (RBBB) QRS morphology during arrhythmia are presented. The clinical and electrophysiological characteristics and the therapeutic problems raised are analysed. The branch to branch reentry mechanism was considered as the underlying mechanism. The peculiar characteristics found in our cases are: almost normal heart, except right bundle branch block in two and left anterior hemiblock in one patient; relatively slow ventricular rate during tachycardia; delayed retrograde ventriculo-atrial conduction during tachycardia; the onset of tachycardia related to atrial or ventricular premature beats; the possibility to stop the tachycardia through ventricular pacing; therapeutical point of view, DC shock, ventricular pacing and iv mexiletin HCl were highly effective, but not iv lidocaine.

Bundle-Branch Block↗
PubMedDate not supplied

Antiarrhythmic effects of verapamil given in sublingual way.

In order to eliminate the first pass through the liver where the drug is deactivated, 80 mgs verapamil was given in sublingual way in a) 10 patients with supraventricular tachycardias where in 7 instances sinus rhythm was obtained after 15-30 minutes, b) in 18 patients with atrial fibrillation and in 5 with atrial flutter with rapid ventricular rate, where a significant slowing down of ventricular rate was obtained after 20 minutes. The sublingual way of verapamil administration is a simple, effective and safe procedure in the treatment of tachyarrhythmias.

Administration, Sublingual↗
PubMedDate not supplied

Experimental validation of sino-atrial conduction time using sinus node potential recording, right and left atrial continuous pacing method.

In an experimental study indirect sino-atrial conduction time (SACT) was measured, using continuous pacing method from right and left atrial sites, and compared with direct SACT obtained from sinus node potential recording, all the determination being done before and after autonomic blockade. The distance between the two sites of stimulation may be taken into account as a correction factor for SACT determination. The SACT obtained with sinus node potential technique is the same as the indirect SACT after autonomic blockade. These findings are valuable for SACT determination with transesophageal pacing method. Left atrial pacing, thus transesophageal pacing, is a valuable method in estimating the SACT, but a time correction and autonomic blockade is required in order to obtain a real value, eliminating the extrinsic influences.

Animals↗
PubMedDate not supplied

Transesophageal pacing technique in the estimation of sinus node function.

A personal noninvasive transesophageal pacing technique for the estimation of sinus node function is presented. With a pacemaker device and an esophageal pentapolar catheter, using a correction factor for the left atrial site of stimulation, it is possible to calculate the sinus node recovery time, sinoatrial conduction time and sinus node effective refractory period, before and after autonomic blockade as accurately as by the intracavitary technique.

Autonomic Nerve Block↗