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Dr Chai Chew Yian

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  • Senior Consultant, Emergency Medicine Department, National University Hospital
  • Senior Consultant, Emergency Medicine Department, Alexandra Hospital
  • Assistant Professor, Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore


MBBS (NUS, Singapore), MCEM (The College of Emergency Med, UK), MMed (Emergency Med) (NUS, Singapore)


Emergency Medicine

Clinical Disciplines/Programmes:

Chronic Programme (Live Better), FAST Programme (Get Better)

Special Interests:

Observation Medicine


Dr Chai Chew Yian is a specialist in Emergency Medicine and director of the Extended Diagnostic Treatment Unit. She is heading the GPFirst Programme in NUH EMD, a local programme in partnership with General Practitioners which aims to encourage patients with mild to moderate medical conditions to seek treatment with their General Practitioners first.

Dr Chai has a special interest in Observation Medicine and has completed a fellowship in Observation Medicine in Sweden from 2014 – 2015. The goal of observation medicine in EMD is to observe, diagnose and treat patients efficiently in a specialised unit with protocolised care so as to avoid hospital admissions.

She is interested in looking for collaborators to develop new protocols for the observation unit, as well as to startup a local fellowship programme in Observation Medicine. She is also looking for collaborators to work closely with the General Practitioners to improve right siting of care so as to better streamline the workflow for patients needing acute emergency care.

Journals & Publications

  1. Kathleen Swee Min Khoo, Zhen Yu Lim, Chew Yian Chai, Malcolm Mahadevan, Win Sen Kuan. Management of Acute Pyelonephritis in the Emergency Department Observation Unit. Singapore Medical Journal, Volume 62, Issue 6, P287, 1st June 2021
  2. Ibrahim I, R Macatangay, Chai CY, CM Khoo, M Mahadevan. 24-hr observation unit: A Safe Location for Rapid Glucose Control in Uncomplicated Severe Hyperglycaemia. BMC Emergency Medicine Volume 21, Issue 1, Article number: 66, 30th May 2021
  3. Gene Wai Han Chan, Chew Yian Chai, Joy Teo Su-Yue, Andrea Fantegrossi Calvin Tjio Kai En, Mui Teng Chua, Calin A.Brown III. Emergency Airway Management in an Asian Cohort: A Prospective Observational Study from the National Emergency Airway Registry (NEAR). AAMS Annals Academy of Medicine Singapore, Volume 50, Issue 1, P42-51, 1st Jan 2021
  4. Carol Y. Cheung, Dejiang Xu, Ching-Yu Cheng, Charumathi Sabanayagam, Yih Chung Tham, Chew Yian Chai, Bamini Gopinath, Paul Mitchell, Richie Poulton, Terrie E. Moffitt, Jason C.Yam, Clement C. Tham, Jost B. Jonas, Ya Xing Wang, Su Jeong Song, Ling-Jun Li, Gavin Tan, Daniel S.W.Ting, Wynne Hsu, Mong Li Lee, Tien Y Wong. A Deep Learning System for Retinal Vessel Caliber Measurement to Predict Cardiovascular Disease. Nature Biomedical Engineering, Volume 5, Issue 6, P498-508, 12th Oct 2020 doi: 10.1038/s41551-020-00626-4
  5. Wei Ping Daniel Chor, Pei Xian Lorraine Yong, Chew Yian Chai, Tiong Beng Sim, Win Sen Kuan. Management of Dyspepsia - The Role of the ED Observation unit to optimize patient outcomes. The American Journal of Emergency Medicine Volume 36, Issue 10, P1733-1737, October 01,2018.
  6. Observation Medicine Principles and Protocols 2017. Author of book chapters. Chapter 30 - Primary Spontaneous Pneumothorax; Chapter 72 - Observation Medicine in Singapore; Chapter 83 - Spontaneous Pneumothorax; Chapter 86 - Dengue
  7. Li Tserng Teo, S. Punamiya, C.Y. Chai, K.T.S.Go, Y.T. Yeo, D. Wong, V. Appasamy, M.T.Chiu. Emergency angio-embolisation in the operating theatre for trauma patients using the C- Arm digital subtraction angiography. Injury, Volume 43, Issue 9, P1492-1496, Sept 2012 doi:10.1016/j.injury.2011.01.026

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