The effects of high temperature on cardiovascular admissions in the most populous tropical city in Vietnam

Dung Phung, Yuming Guo, Phong Thai, Shannon Rutherford, Xiaoming Wang, Minh Nguyen, Cuong Manh Do, Nga Huy Nguyen, Noore Alam, Cordia Chu

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32 Citations (Scopus)


This study examined the short-term effects of temperature on cardiovascular hospital admissions (CHA) in the largest tropical city in Southern Vietnam. We applied Poisson time-series regression models with Distributed Lag Non-Linear Model (DLNM) to examine the temperature-CHA association while adjusting for seasonal and long-term trends, day of the week, holidays, and humidity. The threshold temperature and added effects of heat waves were also evaluated. The exposure-response curve of temperature-CHA reveals a J-shape relationship with a threshold temperature of 29.6 °C. The delayed effects temperature- CHA lasted for a week (0-5 days). The overall risk of CHA increased 12.9% (RR, 1.129; 95%CI, 0.972-1.311) during heatwave events, which were defined as temperature ≥ the 99th percentile for ≥2 consecutive days. The modification roles of gender and age were inconsistent and non-significant in this study. An additional prevention program that reduces the risk of cardiovascular disease in relation to high temperatures should be developed.

Original languageEnglish
Pages (from-to)33-39
Number of pages7
JournalEnvironmental Pollution
Issue numberPart A
Publication statusPublished - 1 Jan 2016
Externally publishedYes


  • Cardiovascular diseases
  • Ho Chi Minh City
  • Hospital admission
  • Temperature
  • Vietnam

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