[Dilatation technic in esophageal stenoses using a balloon catheter]. / K technice dilatace jícnových stenóz balónkovými katétry.

In dilating oesophageal stenoses by balloon catheters it becomes necessary to adapt the technique of the intervention to the type and degree of stenosis and condition of the patient. The dilatation may be successfully performed even in very narrow postinflammation, postoperation and postcorrosion stenoses. The dilatation is usually performed for the period of 30 minutes, the shortest period between interventions being twice in a week, being followed by weekly or several weeks intervals. In a careful application of the balloon catheters transnasally or transorally it becomes possible to decrease the unpleasant feelings of the patient and possible complications to a minimum.

Experience with iopamidol in myeloradiculography.

Myeloradiculography with Iopamiro 300 produced by Bracco was carried out in 110 patients. In 97.2% the diagnostic evidence produced was excellent. It was difficult to make an exact diagnosis in 2.7% of cases, in whom there was a strong dilution as the contrast material moved from the lumbar into the cervical area of the spine. The side effects were slight and occurred only in a small proportion of patients. No neurotoxic complications or psychological changes were observed.

[The effectiveness of vasopressors and vasodilators for pharmaco-dynamic renal angiography (author's transl)]. / Effektivität von Vasopressoren und Vasodilatoren in der pharmakodynamischen Nierenangiographie

9,450 radiographs of 355 patients were analysed in order to determine the diagnostic values of pharmaco-dynamic renal angiography. In each case renal angiography was performed by a conventional techinique as the basis for a clinical experimental study of the effectiveness of a-renergic and cholinergic drugs. The comparison showed unequivocally that pharmacodynamic methods may increase the value of renal angiography. Vasopressors alter the pressure gradient during the arterial phase and improve filling of neovascular areas, which are themselves unreactive. The value of the vasodilators depends on the increased contrast values during the parenchymatous and venous phases of the angiogram. In this way structural changes in tne renal parenchyma and pathological changes in the veins can be emphasised. The value of adrenergic drugs consists in increasing the vascular supply to various tumours, focal inflammatory disease and renal contusion, whereas cholinergic drugs are suitable for improving the demonstration of parenchymal lesions, such as tumours, cysts, abscesses, tuberculomas and localised renal trauma. The results indicate clearly that pharmaco-dynamic methods represent an integral part of renal angiography.