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Biomedical subjects

T Gyöngy

Publications and source records attributed to T Gyöngy.

12 recordsLinked to original sources
PubMed1992

[Coronary surgery at the Cardiovascular Surgical Clinic (1976-1990)].

In the Cardiovascular Surgical Clinic of the Semmelweis Medical University of Budapest the first coronary artery bypass grafting (CABG) procedure was performed in 1975. Since that time coronary artery surgery has become a routine everyday practice representing more than half of the total workload of adult cardiac surgery. The analysis of 1347 operations performed between 1976-1990 on patients with coronary heart disease showed the followings: the first few years--so called learning curve of CABG operations is characterised by high mortality. With passing time the number of cases performed each year increased rapidly and the surgical technique has improved too. At the same time the operative mortality figures showed decreasing tendency--it was 2.1% for the last 609 cases. All observed parameters showed some progress: in 1990 the average number of grafts per patient was 3.09, internal mammary artery usage 15 percent and the mean aortic cross clamp time per anastomosis 24.5 minutes. Complete myocardial revascularisation is the key point of coronary artery surgery. In order to achieve this target in all operated cases further technical improvement is necessary.

Coronary Artery Bypass↗
PubMed1992

[Development and results of valve replacement surgery at the Városmajor Clinic 1976-1990 (retorospective clinical analysis)].

In Hungary valve replacement is still a major indication for heart surgery in adults. In the Cardiovascular Surgical Clinic of Semmelweis Medical University of Budapest from 1976 to 1990 2435 patients were operated for valve disease. Majority of the cases had single (aortic n = 856, mitral n = 912) or double (aortic + mitral n = 513) valve replacement. Over this 15 years period there have been many alterations in patients characteristics and surgical technique as well. In spite of the increasing mean age of patients the operative mortality has decreased (in the last 5 years period it was 2.7%, 5.5% and 7.9% in the three groups respectively). At the same time the number of patients requiring valve re-replacement or combined valve + coronary procedure has increased. The use of bioprosthetic valves has fallen below 10 percent from the 60--80 percent observed between 1976--1980. The analysis showes excellent surgical results in the field of valve replacement in Hungary.

Cardiac Surgical Procedures↗
PubMed1990

Atrial standstill: an indication for rate responsive pacing.

Atrial standstill (atrial paralysis) is a rare reason for permanent bradycardia. A case of atrial standstill is presented. A 35-year-old man had suffered from bradycardia since his childhood. For 2 years he had complaints (diminishment of his working capacity, and dyspnea occurred with effort) as well. On admission, a slow (38/min) junctional escape rhythm could be detected. There were no signs of atrial mechanical activity (atrial contraction) according to chest x ray, echocardiography, and the atrial pressure curve. The electrophysiological study revealed that the atria could not be electrically stimulated, and no P wave (A wave) could be recorded on right atrial electrograms. The patient received a rate responsive pacemaker. After pacemaker implantation, he became symptom-free; his working capacity improved markedly and his heart size decreased. Owing to the permanent bradycardia and the lack of atrial stimulation, the atrial standstill represents an indication for ventricular rate responsive pacing. Atrial standstill, permanent bradycardia, and the inability to stimulate the atrium are indications for ventricular rate responsive pacing.

Adult↗
PubMed1989

[Successful surgical management of rupture of the papillary muscle diagnosed by ultrasound].

The rupture of the papillary muscle is an infrequent complication of myocardial infarction. Survival of the acute phase depends on the severity of the rupture and the remaining function of the left ventricle. Permanent survival may be ensured however only by surgical intervention. The authors present the case record of a patients whose disease in connection with a myocardial infarction was revealed by echocardiography and was operated on successfully. No such data were found in the Hungarian literature.

Humans↗
PubMed1978

[Pleuropericardial mesothelial cysts].

Experience gained in connection with the diagnosis and removal of 33 pleuropericardial mesothelial cysts is described and compared with the pertaining data in the literature. The incidence, pathology, symptomatology, diagnostics and differential diagnostics of these cysts and the chances of conservative and surgical therapy are discussed.

Adolescent↗
PubMed1977

Implantation of pacemaker electrode from parasternal mediastinotomy.

A review of the literature on the possibilities of myocardial pacemaker electrode implantation is presented. The field of indication of myocardial electrode implantation is restricted to cases of repeated intracardial electrode dislocation and multiple suppuration. In the authors' experience parasternal mediastinotomy offers an appropriate surgical approach for myocardial electrode implantation and has several advantages over other methods of penetration.

Adult↗
PubMed1977

[Probability of electrode dislocation: the importance of threshold measurements during pacemaker implantation (author's transl)].

Myocardial stimulation thresholds were measured during 774 pacemaker implantations with endocardial electrodes. It was found that myocardial thresholds were higher when using electrodes with greater surface area and bipolar ones. Early electrode dislocations were more frequent at higher myocardial thresholds. There was no relationship between frequency of late electrode dislocations and the value of myocardial thresholds. The importance of measurement of myocardial stimulation threshold - as a guarantee of successful pacemaker therapy - is emphasized.

Aged↗