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Biomedical subjects

S Tůma

Publications and source records attributed to S Tůma.

At least 109 records · Page 6Linked to original sources
PubMed1975

Pulmonary blood flow distribution after banding of pulmonary artery.

Radioisotope lung scanning was used to investigate the distribution of pulmonary blood flow after banding of the pulmonary artery in children with a left-to-right shunt and pulmonary hypertension. An abnormal distribution of blood flow in the lung on the side of the operation approach was observed in all patients in the first three weeks following surgery. Abnormalities were still observed in 17 of 21 children 10 months to more than 8 years after the banding operation. There was no significant relation between the occurrence of these abnormalities and time after surgery. Diminished flow to the zones of the right lung was observed less frequently. The incidence of abnormalities in flow distribution was also high preoperatively. Respiratory complications in infants with large left-to-right shunts were considered to be responsible for most of the abnormal blood flow distributions observed. Radioactive lung scanning was found to be a valuable diagnostic method in the early and late postoperative period in infants and small children. It was more sensitive than the other techniques used in revealing deviation of blood flow from one lung in those cases with shifting of the applied band.

Angiography↗
PubMed1975

Selective bronchial arteriography in children.

Twenty nine selective bronchial arteriographies were carried out in 25 children. In 5 cases the findings were normal. In 1 case an aneurysm of the bronchial artery was demonstrated as the source of the bleeding into the bronchus in a case of Rendu-Weber-Osler syndrome. In 1 case a plasmocytoma and in another one a congenital haemangiomatous network with many anastomoses to the pulmonary circulation was demonstrated. In most cases of chronic inflammatory pulmonary disease, the bronchial arteries were dilated and bronchopulmonary anastomoses were visualized. These changes seemed to be a measure of the extent of the disease and of the severity of the functional disturbance in pulmonary tissue, even when only regional. Selective bronchial arteriography is recommended in all cases of haemoptysis, in chronic pulmonary collapse and in chronic inflammatory lung disease in order to determine the source of the bleeding and the extent of involvement of the pulmonary interstitium.

Adolescent↗