JURNAL INTERNASIONAL KEBIDANAN 2020-2023 UNIVERSITAS KEDOKTERAN GUILAN VOLUME 30 ISSUE 4.
JOURNAL OF HOLISTIC NURSING OF MIDWIFERY.
Relationship of Humidity and Atmospheric Pressure With the Risk of Out-of-hospital Cardiac Arrest

JURNAL INTERNASIONAL KEBIDANAN 2020-2023 UNIVERSITAS KEDOKTERAN GUILAN VOLUME 30 ISSUE 4.
JOURNAL OF HOLISTIC NURSING OF MIDWIFERY.
Relationship of Humidity and Atmospheric Pressure With the Risk of Out-of-hospital Cardiac Arrest

Out-of-hospital Cardiac Arrest, Climatic variables, Climate change, Mortality

Introduction: Climate change, which affects human health, is one of the most important
public health concerns. Few studies have examined the effects of humidity and atmospheric
pressure as risk factors on the cardiac system and Out-of-hospital Cardiac Arrest.
Objective: This study aimed to determine the relationship between climatic variables
(humidity and atmospheric pressure) with Out-of-hospital Cardiac Arrest , and its outcome
over 3 years (2016-2018).
Materials and Methods: This is an ecological time-series study. Participants were 392
patients with Out-of-hospital Cardiac Arrest referred to a governmental Hospital in Rasht

City, Iran from 2016 to 2018. Meteorological data and information related to Out-of-
hospital Cardiac Arrest and its consequences were collected from reliable resources and

were analyzed in R software.
Results: Low humidity increased the relative risk of Out-of-hospital Cardiac Arrest (OR=1.54,
95%CI: 1.001-2.69, P=0.001) and failed cardiopulmonary resuscitation (OR=1.76, 95% CI;
1.006-3.79, P=0.001). Higher atmospheric pressure was associated with increased risk of
Out-of-hospital Cardiac Arrest (OR=1.16, 95%CI; 1.001-1.78, P=0.001) and unsuccessful
cardiopulmonary resuscitation (OR=1.039, 95% CI; 1.005-1.91, P=0.001).
Conclusion: Decreased humidity and increased atmospheric pressure are associated with
an increased number of Out-of-hospital Cardiac Arrest cases and failure of cardiopulmonary
resuscitation. Informing people with cardiovascular disease to avoid such weather conditions,
as well as preparing the medical care team and designing early warning systems, can reduce
the adverse effects of climate change on the heart.

Yasaman Borghei , Mohammad Taghi Moghadamnia , Abdolhossein Emami Sigaroudi , Ehsan Kazemnezhad Leili

Octoner 2020, Volume 30, Number 4

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