title: Hemorheological changes in ischemia-reperfusion: an overview on our experimental surgical data.
abstract: Blood vessel occlusions of various origin, depending on the duration and extension, result in tissue damage, causing ischemic or ischemia-reperfusion injuries. Necessary surgical clamping of vessels in vascular-, gastrointestinal or parenchymal organ surgery, flap preparation-transplantation in reconstructive surgery, as well as traumatological vascular occlusions, all present special aspects. Ischemia and reperfusion have effects on hemorheological state by numerous ways: besides the local metabolic and micro-environmental changes, by hemodynamic alterations, free-radical and inflammatory pathways, acute phase reactions and coagulation changes. These processes may be harmful for red blood cells, impairing their deformability and influencing their aggregation behavior. However, there are still many unsolved or non-completely answered questions on relation of hemorheology and ischemia-reperfusion. How do various organ (liver, kidney, small intestine) or limb ischemic-reperfusionic processes of different duration and temperature affect the hemorheological factors? What is the expected magnitude and dynamics of these alterations? Where is the border of irreversibility? How can hemorheological investigations be applied to experimental models using laboratory animals in respect of inter-species differences? This paper gives a summary on some of our research data on organ/tissue ischemia-reperfusion, hemorheology and microcirculation, related to surgical research and experimental microsurgery.
authors: Department of Operative Techniques and Surgical Research, Institute of Surgery, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary.
authors: Norbert
authors: N
authors: Nemeth
authors: Department of Operative Techniques and Surgical Research, Institute of Surgery, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary.
authors: Istvan
authors: I
authors: Furka
authors: Department of Operative Techniques and Surgical Research, Institute of Surgery, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary.
authors: Iren
authors: I
authors: Miko
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000737:chemistry; D004195:Disease Models, Animal; D004907:Erythrocyte Deformability; D004912:Erythrocytes / Q000473:pathology*; D005121:Extremities / Q000098:blood supply; D018056:Hemorheology; D006801:Humans; D008833:Microcirculation; D011184:Postoperative Period; D012039:Regional Blood Flow; D015427:Reperfusion Injury / Q000097:blood* / Q000628:therapy*; D012212:Rheology; D013514:Surgical Procedures, Operative; D013696:Temperature
chemical_list: D000975:Antioxidants
keywords: Hemorheology; experimental models; ischemia-reperfusion; microcirculation