Ong Biauw Chi
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Assoc Prof Ong Biauw Chi

Assoc Prof Ong Biauw Chi

​MBBS, MMed Anaesthesia, FAMS (Anaes)

Senior Consultant

Sengkang General Hospital

Specialty: Anaesthesiology

Sub-specialties: Cardiothoracic Anaesthesia

Clinical Appointments

  • Senior Consultant Department of Anaesthesiology Sengkang General HospitalSengkang General Hospital
  • Visiting Consultant Department of Cardiothoracic Anaesthesia National Heart Centre SingaporeNational Heart Centre Singapore
  • Senior Consultant Anaesthesiology Singapore General HospitalSingapore General Hospital


Dr Ong Biauw Chi graduated from the University of Singapore in 1986 and obtained her Master of Medicine in Anaesthesia with the gold medal award in 1992 from the NUS Yong Loo Lin School of Medicine.

She completed her specialist training and entered the specialist roster in 1995 followed by obtaining the Fellow of the Academy of Medicine, Singapore in 1997. She did her fellowship training in Cardiac Anaesthesia, including Transesophageal Echocardiography training, in Massachusetts General Hospital and Boston Children's Hospital in 1995. She was the team lead in the separation of the Nepalese Craniopagus twins (2001) and the Iranian Craniopagus twins (2003).

Dr Ong is interested in teaching, mentoring and training of junior doctors including medical students in both Yong Loo Lin School of Medicine and Duke-GMS Graduate Medical School, anaesthesia trainees and other medical officers and registrars. She is involved in teaching using simulations and various pedagogy methods. She was involved in starting the course for post basic nurses in peri-anaesthesia with Nanyang Polytechnic to further advance the role and professional development of the nurses in anaesthesia. Dr Ong was named best mentor by SingHealth medical officers and was President of the Society of Anaesthesiologists in 2005.

Dr Ong is a member of the Anaesthesia Specialist Training Committee and is the Chair of the Examination committee overseeing the Master of Medicine Examinations in Anaesthesia. She is the immediate past head of Anaesthesiology department, and Director of Patient Safety and Clinical Governance, and has set up the Clinical Governance framework in Singapore General Hospital. She is actively involved in the Joint Commission International process and organizes and promotes quality improvement, safety and peer review in the hospital. She has held several National Medical Research council grants and various other research grants and keenly supports and promotes research activities. 


  • MBBS
  • MMed Anaesthesia with gold medal
  • MRCOG Part I Examination
  • USMLE Step 1 and 2 and Educational Commission for Foreign Medical Graduates (ECFMG)
  • USMLE Step 3 Certification
  • Advanced Specialty Training for Anaesthesia
  • Fellow of Academy of Medicine (Singapore)

Professional Appointments and Committee Memberships

  • ​Clinical Associate Professor, National University of Singapore, Faculty of Medicine
  • Associate Professor, Duke-GMS, College Master 



Academic and Teaching:

  • Tan Chin Tuan Gold Medal for being the top GCE A-level student in Anglo-Chinese Junior College, 1980.
  • S H Tan Gold Medal for being the most outstanding candidate in the M Med (Anaesthesia) final exams, 1992-1993.
  • Voted the best mentor by SHS MOs 2005.
  • Voted by Duke NUS students Outstanding Faculty for Advocacy (Clinical Core) 2011.
  • 2012 SHS GCEO excellence award for SGH Outstanding Clinician Award.
  • Singhealth Residency top faculty award, 2013 (RISE award).
  • AMEI Singhealth most multi-talented mentor award, 2013, People's Choice Award.
  • National Day Award, Public Service Silver Medal, 2013.
  • NMEA's National Outstanding Clinical Quality Activist Award, 2014.
  • The Annals' Gold Reviewer Award winner for the reviews contributed to Annals in 2015, 2016.
  • National Day Long Service Award, 2016.
  • AM-ETHOS Learning Enhancement and Progress (LEAP) Award Merit - Mentor, March 2017.
  • ACP Academic Day Best Poster Award, March 2017.
  • SingHealth Duke-NUS Long Service Awards 2018, January 2018.


  • Service with a Heart Award from the Singapore General Hospital, March 1998.
  • Anaesthetist for the first Left Ventricular Assist Device implantation 2001.
  • Lead Anaesthetist for the separation of an Adult Craniopagus pair of Twins 2003.
  • EXSA Star award 2008 

Administrative and Others:

  • Excellence for Singapore Award by the Totalisator Board for the Craniopagus Twin Separation operation 2001.
  • Nominated to represent SGH in GCEO awards 2007.
  • Nominated for Medical Excellence Mentorship Award 2008.

Research Interests


  1. Boey SK, Ong BC, Dhara SS. "Preoperative plateletpheresis does not reduce blood loss during cardiac surgery", Can J Anaesth 1993; 40(9):844-50
  2. Ong BC, Ng ASB, Chew SL. "Oral premedication in paediatric day surgery", Singapore Med J 1996;37(2): 139-42
  3. Mathai V, Ong BC, Ho YH. "Randomized controlled trial of lateral internal sphincterotomy with haemorrhoidectomy", British Journal of Surgery 1996; 83(3):380-2
  4. Ong BC, Nathan N, Johnson S, Zavlasky A, Lynch KE, D'Ambra MN. Serum Protein C (an intrinsic anticoagulant) activity drops prior to institution of cardiopulmonary bypass well below levels expected from hemodilution alone. Anesth Analg 1996; 82:SCA9
  5. Lim KL, Ong BC, F Seow-Choen. "Post haemorrhoidectomy pain relief: a comparison of caudal vs general anaesthesia", Techniques in Coloproctology 1997; 1:125-7
  6. Ong BC, Soo KC. "Plasmapheresis in the treatment of inadvertent intravenous infusion of an enteral feeding solution", J Clin Apheresis 1997; 12(4): 200-1
  7. Ong BC, Tan SWS, Tan YS. "Anaphylactic reaction to a first exposure of test dose of aprotinin", SGH Proceedings, 1997; 6: 64-5
  8. Kaur K, Ong BC. "Visual analogue scale vs verbal descriptor scale for measuring pain intensity in post-surgical patients", SGH Proceedings, 1997; 6: 26-30
  9. Nathan N, Ong BC, Yutaka O, et al. " A comparison of three methods for the estimation of intraoperative stroke volume: 3D echocardiographic, automated border detection, and pulmonary artery catheter thermodilution method", Anesthesiology, 1997; Sept 87(3A)
  10. Ong BC, Zimmerman AA, Zappulla DC, Neufeld EJ, Burrows FA. "Prevalence of Factor V Leiden in a population of patients with congenital heart disease", Can J Anaesth 1998; Dec 45(12): 1176-80
  11. Ong BC. "Oesophageal intubation in an infant for oesophageal dilation", Paediatr Anaesth 1998; 8(3): 273-4
  12. Mark Chow, T Lew, Liam BL, Reuban Chelliah, Ong BC. "Predicting the size of double-lumen endobronchial tube based on tracheal diameter", Anesth Analg 1998; Jul 87(1): 158-60
  13. Ng HN, Ong BC. "ReusableRobertshaw Tube", Anaesth Intensive Care, 1998; Apr 26(2): 224
  14. Ong BC, Tan YS, Chin YR, Chong YY. "Homologous blood conservation in coronary bypass surgery – evaluation of recombinant erythropoietin", SGH Proceedings, 1998; 7(4): 19-24
  15. Leong CK, Ong BC. "A case report of heparin resistance due to acquired antithrombin III deficiency", Ann Acad Med Singapore, 1998; Nov 27(6): 877-9
  16. Tay SM, Ong BC, Tan SA. "Caesarean section in a mother with uncorrected congenital coronary to pulmonary artery fistula", Can J Anaesth Apr 1999; 46(4): 368-71
  17. Hwang NC, Shankar S, Ong BC, Leong CK, Chin E, Chua YL, Tan YS, Ng J. "Changing the institutional practice of prolonged mechanical ventilation after coronary artery bypass graft surgery to early extubation", Ann Acad Med Singapore, 1999; 28(4): 534-41
  18. Ong BC, Tan SWS, Tan YS. "Anaphylactic reaction to aprotinin", Anaesth Intensive Care, 1999; Oct 27(5): 538
  19. Mark Chow, T Lew, Liam BL, Reuben Chelliah, Ong BC. "Predicting the size of double-lumen endobronchial tube based on tracheal diameter", Anesth Analg, 1999; 88: 465-7
  20. Tan BKT, Goh PL, Ong BC, Lee BPH, Yeo SJ, Lo NN. Intraoperative normovolaemic haemodilution in total knee arthroplasty - a prospective randomised trial. The journal of the asean orthopaedic association 2000; 13(1):28-30
  21. Kaur K, Ong BC. "Visual analogue scale vs verbal descriptor scale for the measurement of pain in post-surgical patients in a population of Chinese, Malay and Indians".  Asean Journal of Anaesthesiology; 1:1 pg 3-8, 2000
  22. Ong BC, Katijo J, Tan BL, Lee CC, Chan YW. Acute failure of oxygen delivery. Anesthesiology 2001; 95:1038-9
  23. Hoo AEE, Teng SY, Chan T, James E, Ong BC. Centrifugation of salvaged pump blood is useful in reducing the amount of heparin re-infused into the patient. Perfusion 2001; 16:309-312
  24. Ong BC, Mario Gamutan. Three newer neuromuscular blocking agents-rocuronium, cisatracurium, rapacuronium-can they replace succinylcholine? Asean Journal of Anaesthesiology 2001; 2: 123-128
  25. Ong BC, Chee HL, Ang C, Wong T. Anaesthetic challenges in separation of conjoint twins. The Medical Journal of Malaysia 2002; 57:S9-1
  26. Ng SF, Oo CS, Loh KH, Lim PY, Chan YH, Ong BC. A comparative study of three warming interventions to determine the most effective in maintaining perioperative normothermia. Anesthesia and Analgesia 2003: 96:171-6
  27. Ted Wong, Biauw-Chi Ong, Claire Ang, Huei-Leng Chee. Anesthetic Management for a five-day separation of Craniopagus Twins. Anesth Analg 2003: 97:999-1002
  28. Ku CM, Ong BC. Postoperative Nausea and Vomiting: a Review of Current Literature. Singapore Med J 2003 Vol 44(7): 366-374
  29. Zhu Tao, Ng JM, Ong BC. Errors in PCCO. Chin J Anaesthesiol March 2002, vol 22, no 3, Pg 180-181 (Chinese Paper)
  30. A Comparative Study of Three Warming Interventions to Determine the Most Effective in Maintaining Perioperative Normothermia.  Siew-Fong Ng, Cheng-Sim Oo, Khiam-Hong Loh, Poh-Yan Lim, Yiong-Huak Chan, and Biauw-Chi Ong.  Society of Technology in Anesthesia.  Anaesth Analg 2003;96:171-6
  31. Zhang Dong Mei, Ong BC, Hwang NC et al. Evaluation of the cardiac markers in the use of perioperative myocardial injury in patients undergoing coronary artery bypass graft surgery. The journal of practical medicine, 2004, vol 20:9, Pg 1024-1026 (Chinese paper)
  32. Mia Supandji, Ong BC. Clopidogrel and total knee replacement surgery. Anaesthesia Intensive Care, Vol 33 issue 3, pg 410-411, Jan 2005
  33. Chin KJ, Macachor J, Ong KC, Ong BC. A comparison of 5% dextrose in 0.9% normal saline versus non-dextrose-containing crystalloids as the initial intravenous replacement fluid in elective surgery.
    Anaesth Intensive Care. 2006 Oct;34(5):613-7
  34. Ooi LH, Lo NN, Yeo SJ, Ong BC, Ding ZP, Lefi A. Does computer-assisted surgical navigation total knee arthroplasty reduce venous thromboembolism compared with conventional total knee arthroplasty? Singapore Med J 2008; 49(8);610-614
  35. The effect of comorbidity and age on hospital mortality and length of stay in patients with sepsis☆ Yong Yang MBBS, MMed, MSc, PhD,⁎, Kok Soong Yang MBBS, MMed (PH), Yin Maw Hsann MBBS, MMed (PH), Vincent Lim MBBS, Biauw Chi Ong MBBS, MMed, FAMS. Journal of Critical Care 2010 sept 25(3) 398 to 405 (2.19)
  36. Respiratory dysfunction in patients with sepsis: protective effect of diabetes mellitus. Yang Y, Salam ZH, Ong BC, Yang KS.  Am J Crit Care. 2011 Mar;20(2) e41 tl e 47. Doi:10 4037/ajcc2011391. (2.7)
  37. Bringing generalists into the hospital: Outcomes of a family medicine hospitalist model in Singapore. Hock Lee K, Yang Y, Soong Yang K, Chi Ong B, Seong Ng H.  J Hosp Med. 2011 Mar;6(3):115-21. (1.496)
  38. Risk factors for lower extremity amputation among patients with diabetes in Singapore. Yang Y, Osbye, SB Tan, Sakir Salam, Ong BC, Yang KS. Journal of Diabetes and its complications. 2011, doi: 10.1016
  39. Efficacy of Titanium Dioxide compounds in preventing environmental contamination by MRSA. Chow WL, Soe TA, Lim WW, Lim FYJ, Kurup A, Ling ML, Tan AL, Ong BC. Intl J of Inf Control, 2013, v 9:13, P1-8
  40. Standardised management of acupuncture-moxibustion clinic in Singapore General Hospital; Cui SL, Tan KH, Ong BC et al: Chinese Acupuncture Journal, 2014
  41. Redesigning case selection methods to improve clinical review of Inpatient medical records.  Aneeta Minhas, Tun Tun Kyaw, Ong BC.  Journal of Clinical Epidemiology and Global Health, Oct 2014, doi: 10.1016/jcegh.2014.10.001

Research Trials