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Study finds hot weather increases risk of emergency hospitalizations for patients with multimorbidity

hot weather
Credit: Pixabay/CC0 Public Domain

Australians are no strangers to long, hot summers, but new Griffith University research has looked at the impact of hot weather on patients with pre-existing chronic diseases and how it increases their risk of being hospitalized.

The research, titled "Multimorbidity and emergency hospitalizations during hot weather," published in eBioMedicine, found the risk of hospitalization increased with the number of pre-existing during hot weather.

Individuals over the age of 65 with multimorbidity, defined as having two or more chronic diseases, were most at risk during hot weather.

Dr. Zhiwei Xu from Griffith's School of Medicine and Dentistry said as continue to rise, this will have an impact on our hospital system.

"Worldwide, more than half of people aged over 60 years have multimorbidity," Dr. Xu said.

"Hospitals will face more patients with multimorbidity during those hot days, which is why it's so important future iterations of jurisdictional heat early warning systems include people with multimorbidity as a distinct heat-vulnerable group."

Currently, people with chronic diseases are listed in the heat-vulnerable group, but those with multimorbidity are not classified as a distinct and vulnerable subgroup.

Dr. Xu's research focused on emergency hospitalizations between March 2004 and April 2016 for patients with chronic diseases including , diabetes, , asthma/COPD, and chronic kidney disease.

During that time period, more than two million emergency hospitalizations were recorded, and when the mean temperature increased, hospitalization odds increased significantly for patients with multimorbidity.

These findings highlight the additional strain that elevated temperatures can add to already stressed human body systems such as cardiovascular or kidneys.

"We know exposure to hot weather is detrimental to and well-being, and patients with multimorbidity typically require more comprehensive and integrated than patients with one or no chronic disease," Dr. Xu said.

Dr. Shannon Rutherford, a co-author on this paper, also co-leads Griffith University's Ethos project, an extreme heat warning system for older Queenslanders.

"This new study feeds into the work Ethos has underway which aims to provide in-home solutions to allow and their [caregivers] to monitor heat exposure, identify heat risks in their home, and respond to those risks using accessible cooling strategies," she said.

More information: Zhiwei Xu et al, Multimorbidity and emergency hospitalisations during hot weather, eBioMedicine (2024). DOI: 10.1016/j.ebiom.2024.105148

Journal information: EBioMedicine
Citation: Study finds hot weather increases risk of emergency hospitalizations for patients with multimorbidity (2024, June 4) retrieved 20 July 2024 from https://medicalxpress.com/news/2024-06-hot-weather-emergency-hospitalizations-patients.html
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