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Biomedical subjects

L Nieuborg

Publications and source records attributed to L Nieuborg.

14 recordsLinked to original sources
PubMed1983

Haemodynamics in microarterial stenosis: an experimental study in rats using the Doppler technique.

Little is known about the effects of stenosis on the blood flow in small arteries. The purpose of this study was to determine the critical stenosis in the rat aorta. Artificial stenoses were deliberately created in the aorta and the influence on the blood flow through the femoral arteries was measured using a non-invasive Doppler technique. The degree of stenosis was assessed by microarteriographic and casting techniques. The use of the Doppler device proved to be a simple and reliable technique and the critical stenosis level was found to be 40%. In cases of severe stenosis an increase in the collateral circulation was seen.

Animals↗
PubMed1983

Evaluation of the patency of microvenous anastomoses by phlebography after intramedullary injection of contrast material.

Some form of objective evaluation of the quality of a microvenous anastomosis is a necessity in microsurgical training. An indirect technique of visualising the venous system of the hind leg of the rat to assess anastomoses of the common femoral vein is described. We have used this technique of intramedullary injection on 25 occasions and the results are presented. The technique does not involve the sacrifice of the experimental animal and this is a real advantage in an experimental microvascular laboratory.

Animals↗