Biomedical subjects

A Lipcsey

Publications and source records attributed to A Lipcsey.

18 recordsLinked to original sources

PubMed1995

[Echocardiographic diagnosis of intermittent failure of a mitral valve prosthesis].

Three cases are reported who had intermittent diastolic jamming of a mitral tilting disc valve. The clinical presentation of this unfrequent but catastrophic early postoperative complication was different in all cases: the first patient presented with heart failure, the third patient had loss of consciousness with enuresis and the second patient was asymptomatic at the time of the diagnosis. Electromechanical dissociation was first suspected by clinical examination in 2 cases but it was confirmed in all 3 cases by 2 dimensional and Doppler echocardiography. Transesophageal echocardiography did not provide any additional information. Besides opening failure of the valve Doppler echocardiography also demonstrated incomplete or delayed opening in the asymptomatic period. Survival is dependent on correct diagnosis and urgent surgical treatment of this type of prosthetic valve dysfunction.

Echocardiography, Doppler↗

PubMed1992

[Transcranial Doppler sonographic study of the effect of electroconvulsive therapy on the circulation in the median cerebral artery].

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.

Blood Flow Velocity↗

PubMed1992

Phage pattern and antibiotic resistance pattern of coagulase-negative staphylococci obtained from immunocompromised patients.

A total of 152 coagulase-negative staphylococcal strains were isolated from clinical samples of 14 patients hospitalized after bone-marrow transplantation in a specialized hospital ward in Hungary, during an 18-month period between 1987 and 1989. Two species, Staphylococcus epidermidis and Staphylococcus haemolyticus, predominated (each, 45%). Using Pulverer and co-workers' phage set for typing, 68% of the isolates were typable; 16 phage patterns were observed. A characteristic long pattern with phages Ph10/Ph13/Ph15/U4/U15/U16/U20/U33 /U46 appeared only in S. epidermidis, among 5 of 11 colonized patients (8.5% of all strains). Single lysis with phage Ph13 was observed in 7 of the 14 patients (49% of all strains), in species S. capitis, S. epidermidis, S. haemolyticus, S. hominis, and S. warneri. In S. haemolyticus, non-typable strains predominated (66%); this character occurred only in 2% among other species. The strains colonizing the immunocompromised patients differed from each other in phage pattern, antibiotic resistance pattern, and/or slime production. No hospital infection was suggested. On the other hand, high incidence of two well-definable phage patterns raises some relationship between phage receptors or some regulatory systems in phage multiplication and factors responsible for special colonization as common surface properties.

Bacterial Typing Techniques↗

PubMed1991

[Subclavian steal syndrome examined by transcranial Doppler sonography].

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.

Echocardiography, Doppler↗

PubMed1989

[Transcranial Doppler sonography].

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.

Cerebrovascular Disorders↗

PubMed1987