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Biomedical subjects

A Lorber

Publications and source records attributed to A Lorber.

At least 19 recordsLinked to original sources
PubMed1992

[Congenital arteriovenous facial fistula cured by percutaneous embolization].

Arteriovenous fistulas of the external carotid artery are uncommon. They are usually of traumatic origin but in rare cases may be congenital. When located in regions with difficult access, they constitute a difficult surgical problem because of intra-operative bleeding and significant morbidity. With the advent of transcatheter embolization and new embolic agents, embolization has become the treatment of choice, with a cure rate of over 95%, low morbidity and brief hospitalization. Occlusion of the fistula itself, rather than occlusion of feeding pedicles, is achieved by super-selective catheterization and the use of a suitable permanent embolic agent, depending on location of the fistula and its flow characteristics. A girl aged 2 10/12 with a large, high-flow, arteriovenous fistula of the internal maxillary artery is presented. Complete occlusion of the fistula itself, with full cure, was achieved by super-selective transcatheter embolization using Gianturco coils. There has been no recurrence after more than 7 months of follow-up.

Arteriovenous Fistula↗
PubMed1989

[Echocardiographic diagnosis of anomalous origin of left coronary artery].

Cross sectional and M-mode echocardiography is a well-established noninvasive technique in the diagnosis of dilated cardiomyopathy and is essential in the evaluation of its severity and progress. However, in most cases of dilated cardiomyopathy in children, it does not provide data suggestive of the etiology of the disease. In the rare congenital malformation, anomalous origin of the left coronary artery from the pulmonary artery, the echocardiographic techniques may suggest the diagnosis when the left coronary artery cannot be demonstrated to arise from its usual site, the left coronary sinus (as visualized in the short axis of the aortic root). A firm diagnosis can be made if the anomalous origin of the left coronary artery is identified in a cross-sectional view of the main pulmonary artery (left parasternal long axis view of the main pulmonary artery, Fig. 1). This was demonstrated in a 9-year-old girl by coronary and aortic angiography (Fig. 2a, b). Anatomical confirmation was made during corrective surgery 3 months later. The origin of the left coronary artery was at the left posterior aspect of the main pulmonary artery, just proximal to its bifurcation. This is an unusual origin in this anomaly in which the coronary artery has been reported to arise close to the pulmonary valve, but not distal, as in this case.

Child↗
PubMed1989

Early detection of infantile endocarditis by gallium--67 scintigraphy.

An infant with suspected soft tissue infection of the knee was studied by 67Ga-scintigraphy. In addition to knee and hip joint increased activity, heart uptake was also demonstrated prior to the development of clinical signs of endocarditis. The early detection and treatment resulted in satisfactory clinical resolution.

Endocarditis, Bacterial↗
PubMed1988

Bedside demonstration of the absence of the right pulmonary artery in a premature baby.

Bedside demonstration of the absence of the right pulmonary artery was made in a premature baby in the neonatal intensive care unit. Antegrade venous and retrograde aortic injections of contrast material excluded the possibility of the anomalous origin of the right pulmonary artery from the aorta, and suggested the above-mentioned diagnosis, with the addition of a ventricular septal defect and a right-to-left shunt.

Female↗
PubMed1988

R wave amplitude changes during stress testing in ischemic patients with normal epicardial coronary arteries.

R wave amplitude changes during stress testing were validated in 12 ischemic patients with normal coronary angiograms. The data were compared with findings obtained from 10 patients with clinical and angiographic evidence of coronary arterial disease and 10 normal controls. An abnormal R wave amplitude response occurred in 83.3% of the group with normal coronary angiography, in 80% of the group of patients with clinical and angiographic evidence of coronary arterial disease, and in only 10% of the control group. The similarity of R wave amplitude changes in the first two group suggests that these changes are related to ischemia. If so, then R wave amplitude response to exercise could be of value in the electrocardiographic diagnosis of ischemia in patients with angiographically normal coronary arteries.

Adult↗
PubMed1988

The scale of myocardial involvement in varicella myocarditis.

Two patients with varicella myocarditis are described. An arrhythmia associated with complete recovery occurred in the first patient whereas intractable congestive heart failure complicated by hemiplegia resulted in a fatal outcome in the other case. We stress the extent of myocardial involvement produced by the herpes zoster virus in the setting of varicella.

Cardiac Output↗
PubMed1988

Hereditary right axis deviation: electrocardiographic pattern of pseudo left posterior hemiblock and incomplete right bundle branch block.

We present a family with a hereditary electrocardiographic pattern of pseudo left posterior hemiblock and incomplete right bundle branch block which resulted in right axis deviation. The mother had a normal electrocardiogram, while the father and their two sons presented the above-described electrocardiographic features. Clinical, radiological and echocardiographic evaluation excluded structural and functional cardiac abnormalities as well as chest deformities and lung disease. The identical vectorcardiographic findings of the father and his sons is discussed.

Adolescent↗
PubMed1987

Torsade de pointes complicating atrioventricular block: report of two cases.

One patient with complete atrioventricular heart block and another with high-degree atrioventricular block, complicated by "torsade de pointes" are presented. Both patients were symptomatic. One had a syncopal episode and the other presented with signs and symptoms of congestive heart failure. The electrocardiographic phenomena of torsade de pointes was repeatedly recorded. No other known predisposing factors for torsade de pointes were identified. The use of right ventricular endocardial pacing suppressed the paroxysms in both patients.

Aged↗
PubMed1987

The value of electrocardiography in patients with right ventricular endocardial pacemakers in the diagnosis of left ventricular hypertrophy: a correlative study of pace electrocardiography and left ventricular mass derived from M-mode echocardiography.

This study evaluated 51 patients with permanent apical right ventricular endocardial pacemakers. The assessment of the diagnostic value of pace electrocardiograms for the determination of left ventricular hypertrophy revealed specificity of 94% and sensitivity of 66%, applying a new parameter: RL1 + SV3 greater than or equal to 30 mm. The application of this criterion in the interpretation of pace electrocardiograms correlated well with values for the left ventricular mass derived from M-mode echocardiograms (r = 0.644, P less than 0.0001).

Aged↗
PubMed1987

Quinidine-induced torsade de pointes suppressed by paroxysmal atrial fibrillation.

A 74-year-old patient is presented in whom quinidine-induced torsade de pointes was abolished by the onset of atrial fibrillation with a fast ventricular response. Heart rate acceleration during atrial fibrillation shortened the Q-T interval from 0.68 on admission to 0.44 milliseconds when sinus rhythm was re-established. This resulted in the suppression of paroxysms of polymorphous ventricular tachycardia.

Aged↗
PubMed1987

Transient complete atrioventricular dissociation and asystole following junctional premature beats in a patient with acute myocardial infarction.

A 58-year-old patient is presented with recurrent episodes of complete atrioventricular dissociation and asystole which followed junctional premature beats during the acute phase of myocardial infarction. This uncommon electrocardiographic phenomenon occurred when junctional premature beats interfered with the conduction in a previously compromised atrioventricular node, leading to the above-mentioned electrocardiographic phenomenon.

Arrhythmias, Cardiac↗
PubMed1987

Autosomal dominant inheritance of sinus node disease.

A family with sinus node disease is presented. The mother was severely affected by sinus bradycardia and required a permanent atrial pacing system. The father is asymptomatic and has no evidence of conduction disturbances. All their offspring (one son and two daughters) are affected with variable degrees of severity. The occurrence of the disease in this family is suggestive of autosomal dominant inheritance with variable penetrance.

Adolescent↗
PubMed1987

Atrioventricular block complicating dissecting aneurysm of the aorta.

A 67-year-old patient who presented with acute dissecting aneurysm of the aorta was complicated by progressive transient atrioventricular heart block. Post-mortem examination findings confirmed the diagnosis of dissection of the ascending aorta and revealed an interatrial haemorrhage in the area of the septal atrioventricular junction.

Aged↗