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Biomedical subjects

J Siman

Publications and source records attributed to J Siman.

At least 37 records · Page 2Linked to original sources
PubMed1992

[The importance of pulmonary angiography in the surgical treatment of congenital heart defects with a left-right shunt and pulmonary hypertension].

The studied series consisted of 14 patients with ventricular septal defect and pulmonary hypertension aged from 3 months to 15 years. Three examination methods were compared: (1) Invasive hemodynamic examination; (2) Pulmoangiographic examination by means of wedge peripheral pulmoangiography; (3) Histological examination of bioptic samples. Direct correlation was found to exist between mean PA pressure, PAR/m2, TPR/SR and pulmoangiographic records, in which the following parameters were evaluated: (a) length of the narrowing of the peripheral branch of the PA, (b) background opacity, (c) circulation time. The histological findings obtained in the bioptic samples corresponded practically in all cases with the hemodynamic and PAG findings. Only in two patients did the histological picture display a less severe degree of affection than found by PAG and hemodynamic examination. The obtained results suggest that in light of surgical indications, PAG can be considered a suitable and valuable supplementary method in assessing borderline findings of pulmonary hypertension in children with congenital heart defects and left-to-right shunt.

Adolescent↗
PubMed1990

[Surgery of congenital heart defects in adulthood].

During the period between 1983-1989 the authors operated 165 patients with the diagnosis of coarctation of the aorta, 197 cases of patent ductus arteriosus and 360 atrial septal defects. In all diagnostic groups they operated a large number of patients above 10 years of age whereby the oldest patient with a septal defect was 57 years old, patients with coarctation of the aorta or a patent ductus arteriosus 35 years old. The authors discuss the reasons why the patients were indicated for operation so late.

Adolescent↗
PubMed1990

[The hypereosinophilic syndrome in a child with endomyocardial fibrosis treated surgically].

The authors describe the case-history of a 12-year-old patient with hypereosinophil syndrome, endomyocardial fibrosis of the left ventricle and dominating mitral valve insufficiency. By correction of the insufficiency, using a Carpentier ring, the authors achieved substantial improvement of the haemodynamics. One year after operation the patient is cardially compensated.

Child↗
PubMed1989

[Anomalies of venous drainage of the left lung].

The authors present their experiences with diagnosis and surgical treatment of anomalous venous drainage of the left lung into the left innominate vein. The anomaly was found only in four out of 704 patients operated on for atrial septal defect. In three patients in whom leftsided anomalous pulmonary venous drainage was associated with atrial septal defect, the derangement was corrected by using extracorporeal circulation. The patient who had no atrial defect was operated on without extracorporeal circulation on applying leftsided thoracotomy. The mean age of the patients was 26.25 years. After correcting the defect, drainage of the left lung into the left atrium was found satisfactory in all operated patients. Exact assessment of the possibility of an associated intracardiac defect is being emphasized, as it is crucial for selecting the appropriate surgical approach.

Adolescent↗
PubMed1989

[Tumors of the heart and arterial embolisms].

Tumors of the heart are a rare cause of embolism of the peripheral arterial system. A series of 26 patients operated on for heart tumor in the Institute of Cardiovascular Diseases in Bratislava over the years 1979-1988 was analyzed. Pseudomyxoma was histologically verified in 24 patients and rhabdomyoma and rhabdomyosarcoma in the other two patients. A total of 12 embolic events was recorded in 9 patients (34.6%). There were 8 instances of embolism in the central nervous system and 4 in the extremities. In all cases pseudomyxoma of the left parts of the heart was the source of embolism. In 21 cases diagnosis was established and operation indicated on the basis of ultrasonographic evidence. The authors recommend the biatrial transseptal approach. Early surgical removal of a heart tumor is the therapy of choice which prevents the development of potential complications from the heart and peripheral arteries.

Adolescent↗
PubMed1989

[Ventricular septal defect in early childhood].

In a retrospective study the results of operations for hemodynamically severe ventricular septal defect were analyzed in 18 patients with a body weight below 10 kg who had been operated on over a period of two years at the Institute of Cardiovascular Diseases in Bratislava. The first group consisted of 12 children with the mean body weight of 6650 g in whom complete correction of the ventricular septal defect was carried out by means extracorporeal circulation. Ligation of the pulmonary artery was performed in 6 infants with the mean body weight of 3420 g (second group). Patients of both groups had a serious left-to-right shunt and marked pulmonary hypertension. An excellent operative result was obtained in 10 children after complete correction of the defect. Two patients of the first group and one patient of the second group died suffering from severe pulmonary hypertension. Surgical correction of the hemodynamically severe ventricular septal defect in early childhood is indicated when conservative treatment fails and should be carried out as an urgent procedure regardless the age and body weight of the patient.

Cardiopulmonary Bypass↗
PubMed1989

[Atrial septal defects: the importance of peroperative morphometric evaluation of defects].

The authors analyze the results of preoperative morphometry of atrial septal defects. They compare the area of the defect and the septal area in different types of defects. Based on the thus obtained relative value, they select either suture of the defect or its correction by means of a patch. They emphasize that during correction defects deformations and reduction of the septal area must be avoided. They do not admit the possibility that the suture of the defect is exposed to traction. Ostium secundum defects the area of which is greater than 40% of the septal area are suited for correction by means of a patch. An important indicator is the transverse dimension of the defect and of the septum. This relation determines the grade of deformity during an inadequately selected suture and the presence of traction mechanisms in the area of the suture and cardiac skeleton. The authors recommend more frequent use of patches also in ostium secundum defects in the cranial lateral and distal part of the atrial defect.

Adolescent↗
PubMed1981

Congenital absence of the pulmonary valve associated with ventricular septal defect.

The authors describe 5 cases of an unusual variant of tetralogy of Fallot with a characteristic clinical course. Its most prominent clinical manifestations are recurrent and severe respiratory infections caused by compression of the inferior trachea and bronchi by a dilated pulmonary artery. Two of the patients died of irreversible respiratory insufficiency. Of the 3 surviving patients one is doing comparatively well.

Electrocardiography↗