Publications by authors named "B El Nashef"
Background: Various therapeutic approaches to bronchopleural fistula have been reported. Its natural history, which may be key to the best therapeutic management, early detection, and possibly, prevention of fistula formation, has received little attention.
Methods: The cases of 96 patients with bronchopleural fistula after pneumonectomy seen over a 13-year period (1982 to 1995) were retrospectively analyzed.
Arteriovenous flow reversal, experimental investigations. II. Hemodynamic and blood gas analyses in incomplete arteriovenous flow reversal in hind extremities of dogs.
Z Exp Chir Transplant Kunstliche Organe
March 1986
2 types of incomplete arteriovenous flow reversal were tested. When the major arteries were patent, 20% of the blood shunted into a peripheral vein was drained via the arteries whereas 80% was drained via the veins of the leg. If the pressure in the arteries was raised, the flow through the arteries was stopped when the outflow pressure reached 25% of the systemic blood pressure.
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- Circulatory reversal through a lateral arteriovenous fistula was shown to have positive effects on the circulation of 20 ischemic hind limbs in dogs.
- The experiments suggest that rupturing distal venous valves could enhance these benefits, although this was not tested in the study.
- Techniques like measuring venous pressures and angiography demonstrated the reversal of blood flow from veins to arteries, but the exact paths for blood returning to the heart are still unclear.