PMID- 18574281 OWN - NLM STAT- MEDLINE DCOM- 20080826 LR - 20170602 IS - 0012-3692 (Print) IS - 0012-3692 (Linking) VI - 133 IP - 6 Suppl DP - 2008 Jun TI - Antithrombotic therapy in neonates and children: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines (8th Edition). PG - 887S-968S LID - S0012-3692(08)60133-6 [pii] LID - 10.1378/chest.08-0762 [doi] AB - This chapter about antithrombotic therapy in neonates and children is part of the Antithrombotic and Thrombolytic Therapy: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines (8th Edition). Grade 1 recommendations are strong and indicate that the benefits do, or do not, outweigh risks, burden, and costs, and Grade 2 suggests that individual patient values may lead to different choices (for a full understanding of the grading, see Guyatt et al in this supplement, pages 123S-131S). In this chapter, many recommendations are based on extrapolation of adult data, and the reader is referred to the appropriate chapters relating to guidelines for adult populations. Within this chapter, the majority of recommendations are separate for neonates and children, reflecting the significant differences in epidemiology of thrombosis and safety and efficacy of therapy in these two populations. Among the key recommendations in this chapter are the following: In children with first episode of venous thromboembolism (VTE), we recommend anticoagulant therapy with either unfractionated heparin (UFH) or low-molecular-weight heparin (LMWH) [Grade 1B]. Dosing of IV UFH should prolong the activated partial thromboplastin time (aPTT) to a range that corresponds to an anti-factor Xa assay (anti-FXa) level of 0.35 to 0.7 U/mL, whereas LMWH should achieve an anti-FXa level of 0.5 to 1.0 U/mL 4 h after an injection for twice-daily dosing. In neonates with first VTE, we suggest either anticoagulation or supportive care with radiologic monitoring and subsequent anticoagulation if extension of the thrombosis occurs during supportive care (Grade 2C). We recommend against the use of routine systemic thromboprophylaxis for children with central venous lines (Grade 1B). For children with cerebral sinovenous thrombosis (CSVT) without significant intracranial hemorrhage (ICH), we recommend anticoagulation initially with UFH, or LMWH and subsequently with LMWH or vitamin K antagonists (VKAs) for a minimum of 3 months (Grade 1B). For children with non-sickle-cell disease-related acute arterial ischemic stroke (AIS), we recommend UFH or LMWH or aspirin (1 to 5 mg/kg/d) as initial therapy until dissection and embolic causes have been excluded (Grade 1B). For neonates with a first AIS, in the absence of a documented ongoing cardioembolic source, we recommend against anticoagulation or aspirin therapy (Grade 1B). FAU - Monagle, Paul AU - Monagle P AD - From the Haematology Department, The Royal Children's Hospital and Department of Pathology, The University of Melbourne, Melbourne, VIC, Australia. Electronic address: paul.monagle@rch.org.au. FAU - Chalmers, Elizabeth AU - Chalmers E AD - Consultant Pediatric Hematologist, Royal Hospital for Sick Children, Glasgow, UK. FAU - Chan, Anthony AU - Chan A AD - Henderson Research Centre, Hamilton, ON, Canada. FAU - deVeber, Gabrielle AU - deVeber G AD - Division of Neurology, Hospital for Sick Children, Toronto, ON, Canada. FAU - Kirkham, Fenella AU - Kirkham F AD - Neurosciences Unit, Institute of Child Health, London, UK. FAU - Massicotte, Patricia AU - Massicotte P AD - Department of Pediatrics, Stollery Children's Hospital, Edmonton, AB, Canada. FAU - Michelson, Alan D AU - Michelson AD AD - Center for Platelet Function Studies, University of Massachusetts Medical School, Worcester, MA. LA - eng PT - Journal Article PT - Practice Guideline PL - United States TA - Chest JT - Chest JID - 0231335 RN - 0 (Fibrinolytic Agents) RN - 0 (Heparin, Low-Molecular-Weight) RN - 12001-79-5 (Vitamin K) RN - R16CO5Y76E (Aspirin) SB - IM MH - Aspirin/administration & dosage/therapeutic use MH - Child MH - Drug Therapy, Combination MH - Fibrinolytic Agents/*therapeutic use MH - Heparin, Low-Molecular-Weight/administration & dosage/*therapeutic use MH - Humans MH - Infant, Newborn MH - Partial Thromboplastin Time MH - Risk Assessment MH - Risk Factors MH - Venous Thrombosis/*drug therapy MH - Vitamin K/antagonists & inhibitors EDAT- 2008/07/24 09:00 MHDA- 2008/08/30 09:00 CRDT- 2008/07/24 09:00 PHST- 2008/07/24 09:00 [pubmed] PHST- 2008/08/30 09:00 [medline] PHST- 2008/07/24 09:00 [entrez] AID - S0012-3692(08)60133-6 [pii] AID - 10.1378/chest.08-0762 [doi] PST - ppublish SO - Chest. 2008 Jun;133(6 Suppl):887S-968S. doi: 10.1378/chest.08-0762.