HEMODYNAMIC VARIATIONS BETWEEN END-TO-SIDE AND END-ORGAN FLAP SYSTEMS

This study aimed to evaluate microcirculatory differences between anat omic arrangements of the intact side flow and the end flow systems. Th e cremaster muscle tube-flap model was employed. Fifty male Sprague-Da wley rats were studied in two experimental groups of 25 animals each. The end-to-side vascular system was compared with end-organ flaps duri ng acute (6 hours) and chronic (1, 3, 7, and 14 days) observation peri ods. Standard microcirculatory measurements were taken in all groups i ncluding vessel diameters, red blood cell velocities, and capillary de nsities. End-to-side flaps presented with stable flow hemodynamics ove r a 14-day period. In end-organ flaps we found acute venous congestion , alterations in arterial and venous flow velocities, and a significan t decline in capillary perfusion.