Volume 8, Issue 1 (Vol.8 No.1 Apr 2019)                   rbmb.net 2019, 8(1): 85-90 | Back to browse issues page

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Talebi F, Rasooli nejad M, Yaseri M, Hadadi A. Association of Vitamin D Status with the Severity and Mortality of Community-Acquired Pneumonia in Iran during 2016-2017:A Prospective Cohort Study. rbmb.net. 2019; 8 (1) :85-90
URL: http://rbmb.net/article-1-276-en.html
Professor of Infectious Diseases, Research Development Center, Sina hospital, Tehran University of Medical Sciences, Tehran, Iran.
Abstract:   (1014 Views)
Background: Community-acquired pneumonia (CAP) is a common disease considered as a major public health problem. It causes considerable morbidity and mortality despite antibiotic treatments. Hospital admission of CAP patients is a significant financial burden and many efforts are ongoing to decrease hospital stay durations. Vitamin D deficiency is associated with increased risk of respiratory infections. This study was designed to determine the association of vitamin D status with hospitalized CAP patient mortality and disease severity.

Methods: This prospective cohort study examined 180 CAP patients admitted to a teaching Hospital in Tehran, Iran during 2016-2017. Their demographic and anthropometric characteristics were recorded. The disease severity was evaluated based on CURB-65. Vitamin D status was determined by measuring by serum 25-hydroxylated vitamin D (25(OH)D) with ELISA. The patients were followed for 30 days to evaluate their vitality.

Results: One hundred and eighty pneumonia patients, including 104 males and 84 females, were recruited from respiratory disease, infectious disease, emergency, and ICU wards. Nearly 18% of the patients were current smokers. The CAP severity, evaluated by CURB-65, was determined to be non-severe in 74.4% of the patients. Patients were classified as vitamin D sufficient, insufficient, or deficient. Thirty percent of the patients were vitamin D sufficient, 18% were insufficient, and 52% were deficient. Thirty-day mortality was 40% (72 cases).
Mortality was greater in males than in females (47.1% vs. 30.3%, p=0.03). The disease was significantly less severe in the patients who survived than in those who did not. The vitamin D status differed between males and females (p=0.027). The vitamin D status was lower in the more severe cases than in the less (p=0.036), and vitamin D deficiency was more prevalent in patients who died than in those who lived. Vitamin D concentration was negatively correlated with hospital stay duration. The 25(OH)D concentration was significantly greater in patients who survived than in those who did not (p<0.001).

Conclusions: Pneumonia severity and mortality risk were greater and hospital stays longer in vitamin D-deficient patients than in those with higher vitamin D status.
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Type of Article: Original Article | Subject: Microbiology
Received: 2018/08/2 | Accepted: 2018/10/21 | Published: 2019/05/6

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