PMID- 8564488 OWN - NLM STAT- MEDLINE DCOM- 19960306 LR - 20190920 IS - 1078-5884 (Print) IS - 1078-5884 (Linking) VI - 11 IP - 1 DP - 1996 Jan TI - Low molecular mass heparin instead of unfractionated heparin during infrainguinal bypass surgery. PG - 59-64 AB - OBJECTIVES: To test whether low molecular mass heparin (LMMH) is comparable to unfractionated heparin (UFH) as an anticoagulant during infrainguinal bypass surgery and to investigate laboratory evidence of hypercoagulation in patients undergoing infrainguinal bypass surgery. MATERIALS AND METHODS: Eighteen patients were randomised to receive either UFH or LMMH (70 anti-Xa units/kg b.w.). Soluble fibrin, measured as fibrin monomers (FM) and fibrinopeptide A (FPA), were measured in blood from the femoral vein before, during and after release of the occluding clamps during surgery. In addition, fibrinogen prothrombin complex, thrombin-antithrombin complex, platelets and antithrombin were measured before surgery. Heparin levels (Anti Xa) were measured during surgery. RESULTS: Increased levels of fibrinogen, FPA, thrombin antithrombin complex and FM were recorded prior to surgery. During surgery no further increase was noted. The anti Xa levels were slightly higher in patients with LMMH than in patients receiving UFH. Levels of FM were significantly lower in patients receiving LMMH. No difference in FPA was noted. A positive correlation between fibrinogen and FPA and FM respectively was recorded. Four patients, two in each group, were reoperated for graft occlusion. One patient in the UFH group required reoperation because of bleeding. CONCLUSIONS: LMMH is comparable to UFH as an anticoagulant during infrainguinal bypass surgery. Variables reflecting hypercoagulability are elevated in this group of patients and are positively correlated to the fibrinogen level. High fibrinogen levels could thus be a risk for perioperative thrombosis. FAU - Swedenborg, J AU - Swedenborg J AD - Department of Surgery, Karolinska Hospital, Stockholm, Sweden. FAU - Nydahl, S AU - Nydahl S FAU - Egberg, N AU - Egberg N LA - eng PT - Clinical Trial PT - Comparative Study PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - England TA - Eur J Vasc Endovasc Surg JT - European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery JID - 9512728 RN - 0 (Anticoagulants) RN - 0 (Fibrin Fibrinogen Degradation Products) RN - 0 (Heparin, Low-Molecular-Weight) RN - 0 (antithrombin III-protease complex) RN - 0 (fibrinmonomer) RN - 25422-31-5 (Fibrinopeptide A) RN - 9000-94-6 (Antithrombin III) RN - 9005-49-6 (Heparin) RN - EC 3.4.- (Peptide Hydrolases) RN - EC 3.4.21.6 (Factor Xa) SB - IM MH - Aged MH - Anticoagulants/*therapeutic use MH - Antithrombin III/analysis MH - Factor Xa/analysis MH - Female MH - Fibrin Fibrinogen Degradation Products/analysis MH - Fibrinopeptide A/analysis MH - Hematocrit MH - Heparin/blood/therapeutic use MH - Heparin, Low-Molecular-Weight/*therapeutic use MH - Humans MH - Leg/*blood supply MH - Male MH - Peptide Hydrolases/analysis MH - Platelet Count MH - *Vascular Surgical Procedures EDAT- 1996/01/01 00:00 MHDA- 1996/01/01 00:01 CRDT- 1996/01/01 00:00 PHST- 1996/01/01 00:00 [pubmed] PHST- 1996/01/01 00:01 [medline] PHST- 1996/01/01 00:00 [entrez] AID - S1078-5884(96)80135-3 [pii] AID - 10.1016/s1078-5884(96)80135-3 [doi] PST - ppublish SO - Eur J Vasc Endovasc Surg. 1996 Jan;11(1):59-64. doi: 10.1016/s1078-5884(96)80135-3.