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Biomedical subjects

S Zoneraich

Publications and source records attributed to S Zoneraich.

At least 37 records · Page 2Linked to original sources
PubMed1985

Huge left atrial thrombus and valve degeneration in a patient with a bioprosthetic, porcine, mitral valve.

A 43 year old man with a Hancock porcine bioprosthetic valve in the mitral position developed a huge thrombus filling the entire left atrium and chronic degeneration of the bioprosthetic mitral valve. The effective valve orifice was less than 2 mm. These severe findings leading to the patient's death remained undetected while he was alive. This case illustrates the great need for a serial phonoechocardiographic studies in all patients with prosthetic valves.

Adult↗
PubMed1982

Noninvasive cardiac evaluation in chronic alcoholic patients with alcohol withdrawal syndrome.

Cardiac function was evaluated by noninvasive techniques in 50 patients hospitalized during acute alcohol withdrawal treatment. All patients had ingested large amounts of alcohol for at least five years, but discontinued alcohol intake 24 to 72 hours prior to admission. There was no clinical history of heart disease in any of the patients. Our study employed 12-lead electrocardiograms (daily) and 24-hour Holter monitoring. M-mode echocardiography and systolic time intervals were evaluated in 24 patients. The results indicate that marked electrical irritability of a depressed myocardium during the acute phase of alcohol withdrawal indicates the need for close cardiac observation of such patients in order to avoid potential life-threatening arrhythmias.

Adult↗
PubMed1981

Uncomplicated sinus of Valsalva aneurysm detected by echocardiography in an asymptomatic patient: case report.

Echocardiography was extremely useful in detecting a distinctive echographic pattern with uncomplicated right sinus of Valsalva aneurysm. The patient was clinically asymptomatic. The chest x-ray showed a normal cardiac silhouette. Electrocardiographic abnormalities including first degree atrio-ventricular block, right bundle branch block, and left anterior hemiblock observed during a routine cardiac clinic visit led to the echocardiographic investigation. The right sinus of Valsalva aneurysm protruded high into the septum and into the left ventricular chamber adjacent to the interventricular septum. At surgery, the aneurysm was closed by the placement of a Dacron elastic patch.

Adult↗
PubMed1981

Wolff-Parkinson-White bigeminal pattern after administration of tensilon.

A rare case of WPW bigeminal pattern was recorded in a 53-year-old man. This electrocardiographic pattern occurred after 10 mg tensilon was given intravenously to suppress a supraventricular tachycardia. WPW bigeminal pattern was terminated after intravenous administration of 100 mg lidocaine and the occurrence of a PVB. We assume that tensilon inducing a vagal effect on the anomalous pathway and changes in the heart rate has caused WPW bigeminal pattern.

Edrophonium↗
PubMed1979

Conduction disturbances in patients with calcified mitral annulus diagnosed by echocardiography.

Clinical, radiologic and histo-pathological observations have suggested that conduction disturbances (CD) are frequent in patients with calcified mitral annulus (CMA). To determine the incidence of CD, 65 consecutive patients with CMA were studied. Sixty-five normal individuals, matched for age and sex served as a control group. CMA has been identified by M-mode echocardiography, cross-sectional echo and image amplifier fluoroscopy. CD were present in 23 patients with CMA as compared to seven patients in the control group (p less than 0.01). Three patients developed complete atrioventricular block (4.6%) during hospitalization requiring artificial pacemakers. We conclude that, 1) early detection of CMA in the elderly is useful in predicting a higher incidence of CD. 2) Complete heart block is more frequent in patients with CMA. 3) Frequent ECG follow-up in these patients has proven to be useful in avoiding serious clinical complications.

Aged↗
PubMed1979

Atrial depolarization in Wolf-Parkinson-White and Lown-Ganong-Levine syndrome: vectorcardiographic features.

The atrial depolarization pattern was studied in 22 patients with Wolff-Parkinson-White and Lown-Ganong-Levine syndrome. The influence of the accessory pathways on the shape, magnitude and conduction pattern of the PSE loop was analyzed. An accurate evaluation of the beginning of the delta wave and of the P loop distortions was obtained by using high magnification (1 mV = 30 cm) recordings. The Frank lead system was used. The influence of atrial size (documented by echocardiography) on the PSE loop is emphasized. Special attention has been focused on the terminal vectors as compared to a control group. In Wolff-Parkinson-White syndrome the size of the PSE loop was smaller than in Lown-Ganong-Levine syndrome or in the normal group. When atrial conduction disturbances and/or atrial enlargement was present the PSE loop was larger and distorted. The terminal vectors were abnormally oriented in 75 percent of the patients with Wolff-Parkinson-White syndrome, but only in one with Lown-Ganong-Levine syndrome. The beginning of the delta wave in patients with Wolff-Parkinson-White syndrome was located to the left of the E point in all but two. When the "concertina" effect was present, the direction of the terminal vectors remained unchanged. In four patients with the Lown-Ganong-Levine syndrome, the PSE loop closed, and in three patients, a small opening was present. We suggest that the changes in contour, duration and amplitude of the PSE loop are due to an abnormal pattern of atrial depolorization in Wolff-Parkinson-White syndrome.

Adolescent↗
PubMed1978

Atrial flutter. Electrocardiographic, vectorcardiographic and echocardiographic correlation.

The duration, contour, and amplitude of atrial flutter wave (f) was studied by electrocardiogram (ECG) and vectorcardiogram (VCG) in 32 patients and was related to the size of the left atrium (LA) measured by the echocardiogram (E). The following ECG parameters were analyzed: (1) the duration of left atrial depolarization, i.e., LA wave; (2) the amplitude of LA wave; (3) the surface area of LA wave; (4) maximum amplitude (A) of f in Leads 2 and V1. There was good correlation between LA size and the duration of depolarization and surface area (p less than 0.01), but the maximum amplitude of the f wave in Leads 2 and V1 failed to predict LA size. The post-conversion sinus P wave showed abnormal LA depolarization time (P greater than 0.12 sec.) in 62 per cent of patients with enlarged left atrium (ELA) and in 43 per cent of patients with normal size LA (NLA). The VCG of the flutter wave revealed two patterns, (1) an eliptical smooth fsE loop in 63 per cent of patients with NLA, and (2) distorted fsE loop in 67 per cent of patients with ELA. Both VCG patterns were subdivided in two subgroups according to the number and location of conduction delays. The VCG of post-conversion P wave confirmed conduction delays in both groups. We conclude that both the size of the left atrium and conduction delays play a basic role in the duration and contour of left atrial wave.

Adult↗