Biomedical subjects
Publications and source records attributed to A Rózsa.
The authors present a case of moyamoya disease associated with subclavian steal syndrome. They could not find any report in literature about the combination of these syndromes. The Doppler, MR, and angiographic findings as well as the clinical importance of subclavian steal and moyamoya syndromes are briefly summarized.
The authors monitored the circulation of middle cerebral artery in subdominant hemisphere using the transcranial Doppler sonographic method during electroconvulsive treatment. They intravenously administered the patient 500 mg propanididum to put him/her to sleep and 150 mg of suxamethonium for muscle relaxation. The phasis of narcosis and awakening were continuously recorded under the treatment. After the administration of propanididum a sudden brief rise in flow velocity was measured with transient bradycardia followed by tachycardia. After the muscle relaxation the peak flow velocity diminished long lasting and the mean flow velocity fell from 60 cm per second to 30 cm per second average. At the beginning of the electroconvulsive treatment the velocity suddenly rose. The flow velocity increased significantly during the clonic phase of convulsive jerks with the pulsatility indices falling rapidly. Very low pulsatility indices lasted for long period of time during and following clonic convulsions.
Authors are presenting the diagnostic problems of subclavian steal syndrome, they are using the transcranial Doppler sonography (TCD). This method completes the traditional sonographic possibilities. With help of specific signs there is the possibility to confirm the clinical diagnosis and we can reach data from the dynamic of cerebral circulation and the situation of the circulation of the intracerebral collateral system, too. Authors briefly summarise the clinical signs of subclavian steal syndrome and the verification of the signs and the opinions, concerning the angiographic and sonographic method and the possibilities of surgical treatment.
The authors present the method of transcranial Doppler sonography and that technic of this method, too. Briefly describe the clinically important physical parameters. They present the possibility of use this method in clinical practice, referring the frequency analysis, the investigation of flow figures in the cerebrovascular diseases, respectively in stenosis, occlusions, malformations of blood vessels and the diagnostic possibilities in aneurysms.