RT Journal Article SR Electronic T1 Anticoagulation in special patient populations JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP S37 OP S42 VO 72 IS 4 suppl 1 A1 Michota, Franklin A1 Merli, Geno YR 2005 UL http://www.ccjm.org/content/72/4_suppl_1/S37.abstract AB Optimal dosing of low-molecular-weight heparin (LMWH) therapy has not yet been established for patients with morbid obesity or renal insufficiency or for pregnant women. Monitoring of anti-Xa levels appears to be helpful in guiding LMWH dosing in all of these patient groups. Use of fondaparinux in these populations has yet to be defined. Cancer patients are at particular risk of venous thromboembolism and generally require escalated and/or prolonged anticoagulation with intense monitoring of therapy.