Biomedical subjects

P Schubart

Publications and source records attributed to P Schubart.

3 recordsLinked to original sources

PubMed1990

[Continuous profile perimetry].

The present paper describes a modified form of profile perimetry. The brightness of a test mark moved at varying speed is increased, and as soon as it is supraliminal the examinee can press a button to reduce the brightness to subliminal again. The accuracy with which the threshold is determined is in the range of a few dB in 1-degree steps in the respective meridian. The reproducibility of the examination makes follow-up possible. A moderate loss of sensitivity can be recognized directly from the record, as can an increased short-term fluctuation of the light difference threshold. Results in subjects with healthy eyes and persons with ocular pathology are described. Possibilities for improvement, in particular to save more time, are discussed.

Aged↗

PubMed1985

The significance of hydronephrosis after aortofemoral reconstruction.

Hydronephrosis due to ureteral obstruction is a rarely reported complication of aortic bypass grafting. Patients who had undergone aortic reconstruction were screened using serial real-time ultrasound examination to detect ureteral obstruction. The clinical course and incidence of graft complications, renal impairment, amputation, and death were determined for hydronephrotic patients and compared with the incidence of similar complications in a control group. Hydronephrotic patients had an extremely high incidence of graft infection, anastomotic aneurysm, graft thrombosis, and amputation. Obstructed ureters were at high risk for intraoperative injury during removal of infected aortic grafts. A subgroup of hydronephrotic patients who developed multiple anastomotic aneurysms without graft infection was identified. Hydronephrosis was frequently silent, and detection required active investigation. After aortic reconstruction, routine screening with real-time ultrasound examination appears warranted to identify a high-risk subset of patients.

Aged↗

PubMed1985

[Eye involvement in botulism].

The present paper reports on ophthalmological symptoms of type B botulism which occurred in 21 cases after they had eaten bacon. The absence of severe complications indicated that the intoxication was only slight. The suspected diagnosis was made by the ophthalmologist on the basis of the inevitable symptom of hyposalivation in combination with a deficit in accommodation.

Accommodation, Ocular↗