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P Bech-Jansen

Publications and source records attributed to P Bech-Jansen.

13 recordsLinked to original sources
PubMed1977

Low dose heparin in major surgery: clinical relevance of plasma heparin concentrations.

56 patients undergoing elective major surgery received low dose heparin prophylaxis, 5,000 IU 2 h before surgery and every 8 h for 7 days. The patients were tested by the 125I-fibrinogen uptake test, which, if positive, was controlled by venography. The heparin concentrations were measured by the method of DENSON and BONNAR and by the chromogenic method of TEIEN et al. in blood samples drained immediately before and after surgery and on the 1st and 5th postoperative day 2 and 4h after the injection of heparin. The values were found higher when estimated by the method of DENSON and BONNAR than by the chromogenic method. Deep vein thrombosis (DVT) developed in 11 patients, and in 10 of them within the first 48 after the operative procedure, in 1 after 4 days. The preoperative values were not lower in the patients who developed DVT, and the heparin concentrations found on the 1st and 5th postoperative day were at the same level as in those who did not develop DVT.

Adult↗
PubMed1975

Changes in systolic time intervals during stepwise increasing hypoxia.

Determinations of the reciprocal value of the square of the pre-ejection period (1/PEP-2) and the pre-ejection period/left ventricular ejection time-ratio (PEP/LVET-ratio) during stepwise increasing hypoxia showed in seven mongrel dogs in a decrease in PEP/LVET-ratio and an increase in 1/PEP-2 as an expression of a stimulation of the cardiac function. Significant changes were not observed before the arterial oxygen tension (Pao2) was below 40 mmHg. During severe hypoxia (Pao2 15-20 mmHg), some deterioration in the systolic time intervals occurs with time, but a stimulation persists at the time of death compared to the prehypoxic values.

Animals↗