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Biomedical subjects

Ia V Volkolakov

Publications and source records attributed to Ia V Volkolakov.

At least 19 recordsLinked to original sources
PubMed1990

[Surgical treatment of primary tumors of the heart].

The article discusses the experience in surgical treatment of tumors of the heart in 34 patients in clinics of cardiosurgery at the Riga Medical Institute and the Institute of Cardiology and Cardiovascular Surgery of Havana (Cuba). Twenty-five patients underwent operations for benign tumors of the heart (16 myxomas, 2 leiomyomas, 2 fibromas, 1 lipoma, 1 angiofibroma, 2 coelomic cysts) under extracorporeal circulation, with 4% lethality. No recurrences were encountered in follow-up periods of 5 months to 14 years. Nine patients had malignant tumors; the tumor was removed successfully in 3 of them, even with resection and prosthetic replacement of the outflow tract of the right ventricle. Only 3 of the patients (33%) who were operated on had a follow-up period of more than 1 year.

Adolescent↗
PubMed1988

[Possibilities of using implanted elastic magnetic elements in reconstructive operations on the abdominal aorta and its branches].

A new method based on the use of elastic magnetic elements has been developed for reconstructive surgery on the abdominal aorta and its branches. In 135 experimental operations and subsequent clinical trial of 40 operations, an oriented 5 and 10 mT elastic magnetic element was implanted to the centre of the reconstruction site, resulting in a considerable reduction of the rate of thrombosis in the reconstructed arterial segments.

Adult↗
PubMed1988

[Arrhythmia associated with continuous cardiac pacing].

The incidence and diagnostic criteria of heart rhythm disorders associated with a permanent pacemaker were assessed on the basis of data, obtained at a single electrocardiography in 1165 patients and continuous ECG recording in 49 patients. A high (94.4%) incidence of the spontaneous and induced rhythm competition at asynchronous stimulation has been demonstrated, indicating that the use of this stimulation regimen should be abandoned. The inhibition of a unipolar pacemaker by myopotentials at regular physical activity is rather uncommon and has no clinical value. VVI stimulation is often (45.2%) associated with variants of escape-capture bigeminy.

Adolescent↗
PubMed1985

[Histochemical and ultrastructural evaluation of myocardial protection during correction of congenital heart defects with cardioplegia].

A combined stepwise light- and electron-microscopic examination of myocardial incision biopsies was carried out in 129 children with congenital valvular defects that were corrected under hypothermal extracorporeal circulation making use of cold or combined drug cardioplegia. Changes in the myocardium were suggestive of its original weakness. Structural changes were small-focal and reversible. Drug cardioplegia allowed to switch off the heart for longer periods (115 min) of time, yet the maintenance of a stable temperature regimen should be regarded as the key factor of successful cardioplegia.

Child, Preschool↗
PubMed1984

[Clinical aspects, diagnosis and surgical correction of congenital aortopulmonary septal defect].

Characteristic signs of a rare abnormality of the major vessels, an aortopulmonary septum defect, are described. This pathology is associated with shunting and discharge of blood from the left to the right and an early development of pulmonary hypertension. The clinical course of the defect depends on the degree of the hemodynamic impairment in the pulmonary circulation. It has been elucidated that aortography with catheterization and contrast examination of the right portions of the heart is the method of choice in the diagnosis of this defect. Surgical correction of the defect is the only radical method of treatment. The long-term results of surgical treatment are promising.

Adolescent↗
PubMed1984

[Surgical treatment of suppurative anterior mediastinitis after open heart surgery for congenital defects].

After 466 operations performed by the transsternal access under conditions of artificial blood circulation for congenital heart diseases anterior purulent mediastinitis developed in 78 patients (16,73%). Different methods of treatment were used: open wound method, repeated mediastinotomy, drainage of the retrosternal space and a method of flowing-fractional washing. Postoperative lethality was reduced (to 0) and duration of treatment was shortened (from 80 to 24,5 days).

Anti-Infective Agents↗
PubMed1983

[Indications for coronarography in selection of patients for surgery on the basis of data from veloergometry and spiroergometry].

Using bicycle ergometry in combination with quantitative and qualitative assessment of ECG changes (in 605 coronary patients), and with direct measurement of oxygen consumption and systemic oxygen supply efficiency (118 coronary patients), a possibility of non-invasive assessment of the severity of coronary arterial affection prior to coronary angiography and the identification of patients with poor prognosis is demonstrated. This assessment lends a more objective foundation to the determination of indications for coronary angiography and prospective aortal-coronary shunting.

Adult↗
PubMed1982

[Iatrogenic vascular trauma].

The experience in the treatment of 107 patients with iatrogenic traumatism of vessels shows that damage to the main veins may be regarded as the most serious lesion. Operations on the vessels carried out in the first hours after the damage permit one to limit the volume of surgery and to prevent a number of complications. Exception is made for children under 3 when post-catheterization arterial thromboses caused by traumas of a considerable part of the intima require removal.

Adult↗