Ugeskrift for laeger
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Ugeskrift for laeger · Sep 1995
[Scintigraphy of bleeding. The diagnostic value based on a 10-year period].
The purpose was to examine the diagnostic value of 99mTc-labelled red blood cell scintigraphy for detection of gastrointestinal haemorrhage. In a retrospective investigation 85 patient files over a 10 year period (1.1.1984-31.12.1993) were evaluated. Data regarding the patients' clinical condition, number of blood transfusions, findings with angiography, gastroscopy, colonoscopy, proctoscopy, operation, x-ray of colon and autopsy were registered. ⋯ It is concluded that 99mTc-labelled red blood cell scintigraphy is a valuable diagnostic tool for identification of acute gastrointestinal haemorrhage. Operation after scintigraphic guidance is well indicated. A "negative" scintigraphy can only exclude ongoing bleeding from the gastrointestinal tract.
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Ugeskrift for laeger · Aug 1995
Case Reports[Monosymptomatic pupillary dilatation caused by scopolamine patch].
A case of monosymptomatic unilateral mydriasis caused by scopolamine patches is presented. The same symptom caused by pressure from an aneurysm on the oculomotor nerve is exceptionally rare.
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Ugeskrift for laeger · Jul 1995
Comparative Study[Screening for prehypoxemia with oximetry--a study of two methods].
The aim of the present study was to evaluate the validity of pulse oximetry screening for prehypoxaemia, to assess the agreement between pulse- and haem-oximetry and to elucidate any influence of peripheral temperature on pulse oximeter measurements. A consecutive prospective study was undertaken in 91 cardiac surgery patients still in treatment with controlled mechanical ventilation in the early postoperative period. We examined arterial oxygen tension (paO2), arterial oxygen saturation (SaO2) and pulse oximeter saturation (SpO2) from 657 arterial blood samples. ⋯ The authors conclude that the pulse oximeter is acceptable for respiratory screening in postoperative cardiac surgery. The low specificity and the low diagnostic specificity results in frequent false alarms. Low peripheral temperature (down to 25%) do not influence the validity of either methods.