Prevalence of vitamin D deficiency in chronic obstructive pulmonary disease and it’s correlation with forced expiratory volume in one second: a tertiary care centre study
Int. J of Research in Medical Sciences,, No 7 (2018) DOI: http://dx.doi.org/10.18203/2320-6012.ijrms20182824
Laxma Reddy S., Ravicharan Avala, Rajshekar Varma, Narendrakumar Narahari, Bhaskar K., Paramjyothi G. K.
FEV1 = % of vital capacity which can forced out in 1 second
|83 %||>30 ng|
|61 %||20-30 ng|
|31 %||< 20 ng|
- More lung capacity (bronchial asthma, FEV1) associated with higher vitamin D – July 2013
- Overview COPD and Vitamin D
- 100000 IU vitamin D monthly helps COPD patients – 3 RCT
- Each ng extra vitamin D associated with better breathing (and 2X better for smokers) – March 2018
Breathing category starts with the following
- FEV1/FVC ratio Wikipedia
Background: Vitamin D deficiency is common all over the Indian subcontinent, with a prevalence of 70-100% in the general population. Vitamin D deficiency has a role in several diseases of the respiratory system including chronic obstructive pulmonary disease (COPD). Studies have shown that vitamin D deficient COPD patients have lower lung function measured by FEV1. We conducted a study to see prevalence of Vitamin D deficiency in COPD patients and it’s correlation with Forced Expiratory Volume in 1 second.
Methods: A cross sectional observational study was performed in a tertiary care hospital in Hyderabad, Telangana during the period of one and half year. This included 104 COPD cases attending outpatient department of pulmonary medicine. Serum vitamin D levels were measured, and spirometry was done in all patients and data was analyzed accordingly.
Results: Among 104 patients, 87 were males and 17 were females. Most of the study population (44.2%) was aged between 60-70 years. Mean BMI was 26.40 (±5.77) kg/m2. Majority of study populations (66.34%) were in GOLD stage 1 and 2. The mean Vitamin D value of the study population was 20.77±11.74ng/ml. Majority of the COPD patients were vitamin D deficient (69.2%). 25.0 % was severely deficient of vitamin D. The mean FEV1 volume (%) was 83.15±11.53, 60.97±17.47, 30.71±7.96 in sufficient, deficient and severe deficient patients.
Conclusions: Vitamin D deficiency is common in COPD patients. Serum vitamin D deficiency increases with increased severity of COPD. There is positive correlation between serum vitamin D levels and post bronchodilator FEV1 (%).
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