Asian venous thromboembolism guidelines: Prevention of venous thromboembolism

International Angiology

Volumn 31, Issue 6, 2012, Pages 501-516

  Liew, N C ^a   Chang, Y H ^b   Choi, G ^c   Chu, P H ^d   Gao, X ^e   Gibbs, H ^f   Ho, C O ^g   Ibrahim, H ^h   Kim, T K ⁱ   Kritpracha, B ^j   Lee, L H ^k   Lee, L ^a   Lee, W Y ^l   Li, Y J ^m   Nicolaides, A N ^n,o   Oh, D ^p   Pratama, D ^h   Ramakrishnan, N ^q   Robless, P A ^r   Villarama Alemany, G ^s   Wong, R ^t   more..

^a UNIVERSITY PUTRA MALAYSIA   (Malaysia)

^b CHANG GUNG MEMORIAL HOSPITAL   (Taiwan)

^c CHINESE UNIVERSITY OF HONG KONG   (Hong Kong)

^d CHANG GUNG UNIVERSITY COLLEGE OF MEDICINE   (Taiwan)

^e Beijing Jishuitan Hospital   (China)

^f ALFRED HOSPITAL   (Australia)

^g Caritas Medical Centre Hong Kong   (Hong Kong)

^h CIPTO MANGUNKUSUMO HOSPITAL   (Indonesia)

ⁱ Seoul National University Bundang Hospital   (South Korea)

^j PRINCE OF SONGKLA UNIVERSITY   (Thailand)

^k SINGAPORE GENERAL HOSPITAL   (Singapore)

^l Sungkyunkwan University School of Medicine   (South Korea)

^m PEKING UNIVERSITY   (China)

ⁿ Vascular Screening and Diagnostic Center   (Cyprus)

^o IMPERIAL COLLEGE LONDON   (United Kingdom)

^p CHA University   (South Korea)

^q APOLLO HOSPITALS   (India)

^r NATIONAL UNIVERSITY OF SINGAPORE   (Singapore)

^s Molecular Diagnostics Laboratory   (Philippines)

^t CHINESE UNIVERSITY OF HONG KONG   (Hong Kong)

more..

Author keywords

Asia; Guidelines as topic; Pulmonary embolism; Vein thrombosis; Venous thromboembolism

Indexed keywords

ACETYLSALICYLIC ACID; APIXABAN; DABIGATRAN; DALTEPARIN; DANAPAROID; EDOXABAN; ENOXAPARIN; FONDAPARINUX; HEPARIN; LOW MOLECULAR WEIGHT HEPARIN; NADROPARIN; PLACEBO; RIVAROXABAN; WARFARIN;

ASIA; BLEEDING DISORDER; CESAREAN SECTION; COMPRESSION STOCKING; DEHYDRATION; ECHOGRAPHY; HORMONE SUBSTITUTION; HUMAN; IMMOBILIZATION; INTENSIVE CARE; INTERMITTENT PNEUMATIC COMPRESSION DEVICE; KIDNEY DISEASE; META ANALYSIS; NERVE BLOCK; NEUROSURGERY; OBESITY; ORTHOPEDIC SURGERY; PHLEBOGRAPHY; PRACTICE GUIDELINE; PREGNANCY COMPLICATION; PROSPECTIVE STUDY; RANDOMIZED CONTROLLED TRIAL (TOPIC); REVIEW; RISK ASSESSMENT; STOCKING DENSITY; SYSTOLIC HYPERTENSION; THROMBOCYTOPENIA; THROMBOPHILIA; THROMBOSIS PREVENTION; TOTAL HIP PROSTHESIS; TRAVEL; UROLOGIC SURGERY; VARICOSIS; VENOUS THROMBOEMBOLISM;

ANTICOAGULANTS; ASIA; ASIAN CONTINENTAL ANCESTRY GROUP; COMBINED MODALITY THERAPY; FIBRINOLYTIC AGENTS; HEMORRHAGE; HOSPITALIZATION; HUMANS; INCIDENCE; PHYSICIAN'S PRACTICE PATTERNS; PREVENTIVE HEALTH SERVICES; RISK ASSESSMENT; RISK FACTORS; SURGICAL PROCEDURES, OPERATIVE; TREATMENT OUTCOME; VENOUS THROMBOEMBOLISM;

EID: 84875361192     PISSN: 03929590     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Review

References (89)

1. Liew NC, Moissinac K, Gul Y. Postoperative venous thromboembolism in Asia: a critical appraisal of its incidence. Asian J Surg 2003;26:154-8. (Pubitemid 36987672)
2. Kakkar VV, Corrigan T, Spindler J, Fossard DP, Flute PT, Crellin RQ et al. Efficacy of low doses of heparin in prevention of deep-vein thrombosis after major surgery. A double-blind, randomised trial. Lancet 1972;2:101-6.
3. Jang MJ, Bang SM, Oh D. Incidence of venous thromboembolism in Korea: from the Health Insurance Review and Assessment services database. J Thromb Haemost 2011;9:85-91
4. Ng HJ, Lee LH. Trends in prevalence of deep vein thrombosis among hospitalized patients in an Asian institution. Thromb Haemost 2009;101:1095-9.
5. Yang Y, Liang L, Zhai Z, He H, Xie W, Peng X et al. Pulmonary Embolism Incidence and Fatality Trends in Chinese Hospitals from 1997 to 2008: A Multicenter Registration Study. PLoS One 2011;6:e26861.
6. Angchaisuksiri P. Venous thromboembolism in Asia- an unrecognized and under-treated problem. Thromb Haemost 2010;104:919-30.
7. Lee L, Liew NC, Gee T. A survey of contemporary opinion and practices of surgical and intensive care specialists towards peri-operative venous thromboembolism prophylaxis in Asia. International Angiology May 2012 [In press].
8. Geerts WH, Bergqvist D, Pineo GF, Heit JA, Samama CM, Lassen MR et al. Prevention of venous thromboembolism: American College of Chest Physicians evidence-based clinical practice guidelines (8th edition). Chest 2008;133:381S-453S. (Pubitemid 351894916)
9. Nicolaides AN, Fareed J, Kakkar AK, Breddin HK, Goldhaber SZ, Hull R et al. Prevention and treatment of venous thromboembolism. International Consensus Statement (Guidelines according to scientific evidence). Int Angiol 2006;25:101-61. (Pubitemid 44043713)
10. Venous thromboembolism: reducing the risk [Internet]. National Institute for Health and Clinical Excellence;©2010. Available at http://guidance. nice.org.uk/CG92. [cited 2012 May 8].
11. Johanson NA, Lachiewicz PF, Lieberman JR, Lotke PA, Parvizi J, Pellegrini V et al. Prevention of symptomatic pulmonary embolism in patients undergoing total hip or knee arthroplasty. J Am Acad Orthop Surg 2009;17:183-96.
12. Leizorovicz A, Turpie AGG, Cohen AT, Dhillon KS, Angchaisuksiri P, Wang CJ. Epidemiology of post-operative venous thromboembolism in Asian countries. Int J Angiol 2004;13:101-8. (Pubitemid 40754830)
13. Leizorovicz A, Turpie AG, Cohen AT, Wong L, Yoo MC, Dans A et al. Epidemiology of venous thromboembolism in Asian patients undergoing major orthopedic surgery without thromboprophylaxis. The SMART study. J Thromb Haemost 2005;3:28-34. (Pubitemid 41647112)
14. Leizorovicz A, on behalf of the SMART Venography Study Steering Committee. Epidemiology of post-operative venous thromboembolism in Asian patients. Results of the SMART venography study. Haematologica 2007;92:1194-200.
15. Piovella F, Wang CJ, Lu H, Lee K, Lee LH, Lee WC et al. Deep-vein thrombosis rates after major orthopedic surgery in Asia. An epidemiological study based on post-operative screening with centrally adjudicated bilateral venography. J Thromb Haemost 2005;3:2664-70. (Pubitemid 41819793)
16. Cha SI, Lee SY, Kim CH, Park JY, Jung TH, Yi JH et al. Venous thromboembolism in Korean patients undergoing major orthopedic surgery. A prospective observational study using computerized tomographic (CT) pulmonary angiography and indirect CT venography. J Korean Med Sci 2010;25:28-34.
17. Fuji T, Fujita S, Ochi T. Fondaparinux prevents venous thromboembolism after joint replacement surgery in Japanese patients. Int Orthop 2008;32:443-51. (Pubitemid 351904622)
18. Fuji T, Fujita S, Tachibana S, Kawai Y. Randomized, double-blind, multi-dose efficacy, safety and biomarker study of the oral Factor Xa inhibitor DU-176b compared with placebo for prevention of venous thromboembolism in patients after total knee arthroplasty. Blood (ASH Annual Meeting Abstracts) 2008; 112: Abstract 34.
19. Houshan L, Wang Y. Rivaroxaban for thromboprophylaxis of venous thromboembolism after total hip or knee replacement in Chinese subjects included in the RECORD program (presented at the Asia-Pacific Arthroplasty Society Meeting 2008;Malaysia, October 23-25, 2008).
20. Chin PL, Amin MS, Yang KY, Yeo SJ, Lo NN. Thromboembolic prophylaxis for total knee arthroplasty in Asian patients. J Orthop 2009;17:1-5.
21. Nakase J, Toribatake Y, Mouri Y, Seki H, Kitaoka K, Tomita K. Heparin versus danaparoid for prevention of venous thromboembolism after hip surgery. J Orthop Surg (Hong Kong) 2009;17:6-9.
22. Lee FY, Chu W, Chan R, Leung YF, Liu KH, Ng SM et al. Incidence of deep vein thrombosis after colorectal surgery in a Chinese population. ANZ J Surg 2001;71:637-40. (Pubitemid 33071022)
23. Sakon M, Maehara Y, Yoshikawa H, Akaza H. Incidence of venous thromboembolism following major abdominal surgery: a multi-center, prospective epidemiological study in Japan. J Thromb Haemost 2006;4:581-6.
24. Oh SY, Kim JH, Lee KW, Bang SM, Hwang JH, Oh D et al. Venous thromboembolism in patients with pancreatic adenocarcinoma: lower incidence in Asians. Thromb Res 2008;122:485-90.
25. Cheung HY, Chung CC, Yau KK, Siu WT, Wong SK, Chiu E et al. Risk of deep vein thrombosis following laparoscopic rectosigmoid resection in Chinese patients. Asian J Surg 2008;31:63-8.
26. Shukla PJ, Siddachari R, Ahire S, Arya S, Ramani S, Barreto SG et al. Post-operative deep vein thrombosis in patients with colorectal cancer. Indian J Gastroenterol 2008;27:71-3.
27. Lee KW, Bang SM, Kim S, Lee HJ, Shin DY, Koh Y et al. The incidence, risk factors and prognostic implications of venous thromboembolism in patients with gastric cancer. J Thromb Haemost 2010;8:540-7.
28. Choi S, Lee KW, Bang SM, Kim S, Lee JO, Kim YJ et al. Different characteristics and prognostic impact of deep vein thrombosis/pulmonary embolism and intraabdominal venous thrombosis in colorectal cancer patients. J Thromb Haemost 2011;106:1084-94.
29. Cheng Y, Wong R, Lam J, Lau FY, Cheng G. Estimated risk of deep venous thrombosis among Chinese patients admitted to general medical wards. J Thromb Haemost 2004;2:1666-8. (Pubitemid 40186187)
30. Leung V, Leung V, Lui W, Chan T, Wong RS, Cheng G. Incidence of deep vein thrombosis in hospitalized Chinese medical patients is similar to that in western populations. Thromb Res 2006;118:763-4. (Pubitemid 44647101)
31. Aniwan S, Rojnuckarin P. High incidence of symptomatic venous thromboembolism in Thai hospitalized medical patients without thromboprophylaxis. Blood Coagul Fibrinolysis 2010;21:334-8.
32. Sharma SK, Gupta V, Kadhiravan T, Banga A, Seith A, Kumar A et al. A prospective study of risk factors profile and incidence of deep vein thrombosis among medically ill hospitalized patients at a tertiary hospital in northern India. Indian J Med Res 2009;130:726-30.
33. Cheng G, Chan C, Liu YT, Choy YF, Wong MM, Yeung PK et al. Incidence of deep vein thrombosis in Chinese medical patients and the impact of DVT prophylaxis. Thrombosis 2011;2011:629383.
34. Chotanaphuti T, Foojareonyos T, Panjapong S, Reumthantong A. Incidence of deep vein thrombosis in post-operative hip fracture patients in Phramongkutklao Hospital. J Med Assoc Thailand 2005;88:S159-63.
35. Lu Y, Ma B, Guo R, Wang Y, Zhang J, Wu Y et al. Deep vein thrombosis in trauma: a prospective study of lower limb orthopedic trauma patients in Tianjin Hospital China. Int Angiol 2007;26:165-70. (Pubitemid 47034278)
36. Sen RK, Kumar A, Tripathy SK, Aggarwal S, Khandelwal N, Manoharan SR. Risk of post-operative venous thromboembolism in Indian patients sustaining pelviacetabular injury. Int Orthop 2011;35:1057-63.
37. Joynt GM, Li TS, Griffith JF, Gomersall CD, Yap FH, Ho AM et al. The incidence of deep vein thrombosis in Chinese medical intensive care patients. Hong Kong Med J 2009;15:24-30.
38. Wilasrusmee C, Kiranantawat K, Horsirimanont S, Lertsithichai P, Reodecha P, Soonthonkit Y et al. Deep vein thrombosis in surgical intensive care unit: Prevalence and risk factors. Asian J Surg 2009;32:85-8.
39. Chan LY, Tam WH, Lau TK. Venous thromboembolism in pregnant Chinese women. Obstet Gynecol 2001;98:471-5.
40. Chan LY, Yuen PM, Lo WK, Lau TK. Symptomatic venous thromboembolism in Chinese patients after gynecological surgery: incidence and disease pattern. Acta Obstet Gynecol Scand 2002;81:343-6.
41. Chisaka H, Utsunomiya H, Okamura K, Yaegashi N. Pulmonary thromboembolism following gynecology surgery and Cesarean section. Int J Gynecol Obstet 2004;84:47-53. (Pubitemid 38064142)
42. Chan LY, Lam KY, Metreweli C, Lau TK. Duplex ultrasound screening for deep vein thrombosis in Chinese after Cesarean section. Acta Obstet Gynecol Scand 2005;85:68-70.
43. Kanchanabat B, Stapanavatr W, Meknavin S, Soorapanth C, Sumanasrethakul C, Kanchanasuttirak P. Systemic review and meta-analysis on the rate of post-operative venous thromboembolism in orthopaedic surgery in Asian patients without thromboprophylaxis. Br J Surg 2011;98:1356-64.
44. Kim YH, Kim JS. Incidence and natural history of deep vein thrombosis after total knee arthroplasty. A prospective randomized study. J Bone Joint Surg 2002;84:566-70.
45. Quinlan DJ, Eikelboom JW, Dahl OE, Eriksson BI, Sidhu PS, Hirsh J. Association between asymptomatic deep vein thrombosis detected by venography and symptomatic venous thromboembolism in patients undergoing elective hip or knee surgery. J Thromb Haemost 2007;5:1438-43. (Pubitemid 46965372)
46. Turpie GG, Lassen MR, Kakkar AK, Eriksson BI, Misselwitz F, Bandel TJ et al. A pooled analysis of four pivotal studies of rivaroxaban for the prevention of venous thromboembolism after orthopaedic surgery: effect on symptomatic venous thromboembolism and death, and bleeding. Haematologica 2009;94(Suppl 2):212.
47. Kwong LM. Therapeutic potential of rivaroxaban in the prevention of venous thromboembolism following hip and knee replacement surgery: a review of clinical trial data. Vasc Health Risk Manag 2011;7:461-6.
48. Wolowacz SE, Roskell NS, Plumb JM, Caprini JA, Eriksson BI. Efficacy and safety of dabigatran etexilate for the prevention of venous thromboembolism following total hip or knee arthroplasty. A metaanalysis. Thromb Haemost 2009;101:77-85.
49. Eriksson BI, Dahl OE, Huo MH, Kurth AA, Hantel S, Hermansson K et al. Oral dabigatran versus enoxaparin for thromboprophylaxis after primary total hip arthroplasty (RE-NOVATE II*). A randomised, double-blind, non-inferiority trial. Thromb Haemost 2011;105:721-9.
50. Kakkos SK, Griffin M, Geroulakos G, Nicolaides AN. The effect of a new portable sequential compressive device (SCD express) in preventing venous stasis. J Vasc Surg 2005;42:296-303 (Pubitemid 41139237)
51. Urbankova J, Quiroz R, Kucher N et al. Intermittent Pneumatic Compression and deep vein thrombosis prevention. A meta-analysis in post-operative patients. Thromb Haemost 2005;94:1181-5 (Pubitemid 41819613)
52. Cohen AT, Skinner JA, Warwick D, Brenkel I. The use of graduated compressive stockings in association with fondaparinux in surgery of the hip. A multicentre, multinational, randomized, open-label, parallel-group comparative study. J Bone Joint Surg Br 2007;89:887-92. (Pubitemid 47322785)
53. Borow M, Goldson HJ. Prevention of postoperative deep vein thrombosis and pulmonary emboli with combined modalities. Am Surg 1983;49:599-605. (Pubitemid 14227863)
54. Kakkos SW, Caprini JA, Geroulakos G, Nicolaides AN, Stansby GP, Reddy DJ. Combined intermittent pneumatic leg compression and pharmacological prophylaxis for prevention of venous thromboembolism in high risk patients. Eur J Vasc Endovasc Surg 2009;37:364-5.
55. Young T, Tang H, Aukes J, Hughes R. Vena caval filters for the prevention of pulmonary embolism. Cochrane database Syst Rev 2010;17:CD00621-2.
56. Gangireddy C, Rectenwald JR, Upchurch GR, Wakefield TW, Khuri S, Henderson WG et al. Risk factors and clinical impact of post-operative symptomatic venous thromboembolism. J Vasc Surg 2007;45:335-42.
57. Goldhaber SZ. Risk factors for thromboembolism. J Am Coll Cardiol 2010;56:1-7.
58. Nakamura M, Fujioka H, Yamada N, Sakuma M, Okada O, Nakanishi N et al. Clinical characteristics of acute pulmonary embolism in Japan: Results of a multicenter registry in the Japanese Society of Pulmonary Embolism Research. Clin Cardiol 2001;24:132-8. (Pubitemid 32108622)
59. Liu HS, Kho BC, Chan JC, Cheung FM, Lau KY, Choi FP et al. Venous thromboembolism in the Chinese population-experience in a regional hospital in Hong Kong. Hong Kong Med J 2002;8:400-5. (Pubitemid 35440109)
60. Cheuk BL, Cheung GC, Cheng SW. Epidemiology of venous thromboembolism in a Chinese population. Br J Surg 2004;91:424-8. (Pubitemid 38491110)
61. Lee LH, Gu KQ, Heng D. Deep vein thrombosis is not rare in Asia-the Singapore General Hospital experience. Ann Acad Med Singapore 2002;31:761-4. (Pubitemid 36216161)
62. Tan KK, Koh WP, Chao AK. Risk factors and presentation of Deep Vein Thrombosis among Asian patients: A hospital-based case-control study in Singapore. Ann Vasc Surg 2007;21:490-5. (Pubitemid 47030836)
63. Shimada YJ, Nakra NC, Fox JT, Kanei Y. Relation of race (Asian, African-American, European-American, and Hispanic) to activated clotting time after weight-adjusted bolus of heparin during percutaneous coronary intervention. Am J Cardiol 2010;105:629-32.
64. Sakon M, Kobayashi T, Shimazui T. Efficacy and safety of enoxaparin in Japanese patients undergoing curative abdominal or pelvic surgery: results from a multicenter, randomized, open-label study. Thromb Res 2010;125:65-70.
65. Zhao X, Sun P, Zhou Y, Liu Y, Zhang H, Mueck W et al. Safety, pharmacokinetics and pharmacodynamics of single/multiple doses of the oral direct factor Xa inhibitor Rivaroxaban in healthy Chinese subjects. Br J Clin Pharmacol 2009;68:77-88.
66. Lim W. Using low molecular weight heparin in special patient populations. J Thromb Thrombolysis 2010;29:233-40.
67. Mahé I, Aghassarian M, Drouet L, Bal Dit-Sollier C, Lacut K, Heilmann JJ et al. Tinzaparin and enoxaparin given at prophylactic dose for eight days in medical elderly patients with impaired renal function: a comparative pharmacokinetic study. Thromb Haemost 2007;97:581-6. (Pubitemid 46592936)
68. Lim W, Dentali F, Eikelboom JW, Crowther MA. Meta-analysis: low-molecular-weight heparin and bleeding in patients with severe renal insufficiency. Ann Intern Med 2006;144:673-84. (Pubitemid 46780653)
69. Horlocker TT, Wedel DJ, Rowlingson JC, Enneking FK, Kopp SL, Benzon HT et al. Regional Anesthesia in the Patient Receiving Antithrombotic or Thrombolytic Therapy. American Society of Regional Anesthesia and Pain Medicine Evidence-Based Guidelines (Third Edition). Reg Anesth Pain Med 2010;35:64-101.
70. Cook D, Meade M, Guyatt G, Walter S, Heels-Ansdell D, Warkentin TE et al. Dalteparin versus Unfractionated Heparin in Critically Ill Patients. The PROTECT Investigators for the Canadian Critical Care Trials Group and the Australian and New Zealand Intensive Care Society Clinical Trials Group. N Engl J Med 2011;364:1305-14.
71. th edition. American College of Chest Physicians Evidence-Based Clinical Practice Guidelines. Chest 2012;141:7S-47S.
72. Hamilton MG, Hull RD, Pineo GF. Venous thromboembolism in neurosurgery and neurology patients: A review. Neurosurgery 1994;34:280-96. (Pubitemid 24044107)
73. Ting AC, Cheng SW, Cheung GC, Wu LL, Hung KN, Fan YW. Perioperative deep vein thrombosis in Chinese patients undergoing craniotomy. Surg Neurol 2002;58:274-9.
74. Taniguchi S, Fukuda I, Daitoku K, Minakawa M, Odagiri S, Suzuki Y et al. Prevalence of venous thromboembolism in neurosurgical patients. Heart Vessels 2009;24:425-8.
75. Eldor A. Thrombophilia, thrombosis and pregnancy. Thromb Haemost 2001;86:104-11. (Pubitemid 32663942)
76. Heit JA, Kobbervig CE, James AH, Petterson TM, Bailey KR, Melton LJ 3rd. Trends in the incidence of venous thromboembolism during pregnancy or postpartum: a 30-year population-based study. Ann Intern Med 2005;143:697-706.
77. Report on Confidential enquiry into maternal deaths in Malaysia (2006-2008). Ministry of Health Malaysia; 2010.
78. Drife J. Thrombosis and thromboembolism. In: saving mothers lives, 2003-2005, 7th report of Confidential Enquiry into Maternal Deaths in UK. RCOG Press 2007.
79. McColl MD, Ramsay JE, Tait RC, Walker ID, McCall F, Conkie JA et al. Risk factors for pregnancy associated venous thromboembolism. Thromb Haemost 1997;78:1183-8. (Pubitemid 27464583)
80. Lindqvist P, Dahlback B, Marsal K. Thrombotic risk during pregnancy: A population study. Obstet Gynecol 1999;94:595-9. (Pubitemid 29460947)
81. Jang MJ, Bang SM, Oh D. Incidence of pregnancy-associated venous thromboembolism in Korea: from the Health Insurance Review and Assessment Service data. J Thromb Haemost 2011;9:2519-21.
82. Royal College of Obstetricians and Gynaecologists on the prevention of VTE during pregnancy and the Puerperium (Green-top guidelines No 37a November 2009).
83. th edition.
84. Gavish I, Brenner B. Air travel and the risk of thromboembolism. Intern Emerg Med. 2011;6:113-6.
85. Cesarone MR, Belcaro G, Nicolaides AN, Incandela L, De S, Geroulakos G et al. Thrombosis from air travel: the LONFLIT3 study-prevention with aspirin vs. low-molecular-weight heparin (LMWH) in high-risk subjects: a randomized trial. Angiology 2002;53:1-6. (Pubitemid 34141884)
86. Cohen AT, Tapson VF, Bergmann JF, Goldhaber SZ, Kakkar AK, Deslandes B et al. Venous thromboembolism risk and prophylaxis in the acute hospital care setting (ENDORSE study): a multinational cross-sectional study. Lancet 2008;371:387-94. (Pubitemid 351173321)
87. Tan LH, Tan SC. Venous Thromboembolism prophylaxis for surgical patients in an Asian hospital. ANZ J Surg 2004;74:455-9. (Pubitemid 38887838)
88. Ansari K, Dalal K, Patel M. Risk stratification and utilisation of thrombo-embolism prophylaxis in a medical-surgical ICU: a hospital-based study. J Indian Med Assoc 2007;105:536-40.
89. Ge J, Li Y, Jin X, Zhou J. Venous thromboembolism risk assessment and thromboprophylaxis among hospitalized acute medical patients in China. Thromb Res 2010;126:270-5.