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Abstract
Background: Usage of air conditioners (AC) has been highly increased in this modern era. In addition to the cooling of the environment, it has a major impact on human health. Rapid influx of cold dry air increases the risk of bronchoconstriction in asthma patients due to the dehydration of the air pathway. So, the present study planned to comparatively evaluate the lung functional status in air conditioner and non air conditioner users.
 Materials and Methods: The pulmonary functional capacity was assessed using FVC, FEV1 and FEV1/FVC ratio, Peak expiratory flow rate (PEFR) and FEF 25-75% in a Helios 702 spirometer.
 Results: The lung functional capacities among the AC users showed a statistically significant decline in PEFR and FEF25-75% indicating the risk of airway obstruction.
 Conclusion: The study concluded an innovative finding that AC users are developing ventilatory dysfunction and are at more risk of respiratory dysfunction. The coldness of the aerosol of the AC unit or other factors responsible may be allergens, infections and humidity level. Thus technical and hygienic features of air intake must be ensured to maintain a good indoor air quality.
Highlights
In this modern and fast evolving world the demand and usage of air-conditioners is highly increased .Almost every workplace, school and home uses air-conditioners [1]
It is the major factor for aggravating the chronic obstructive pulmonary disease (COPD) and it paves the way for many severe acute respiratory syndrome and many other airborne infectious agents [3].Contamination of air conditioner is the major cause for hyperventilation pneumonitis [4]
When values of the lung functional capacities were compared, there was a slight decrease in the Forced vital capacity( FVC), Forced expiratory volume in one second (FEV1), FEV1/FVC ratio in air conditioners (AC) users compared to non AC users and was not statistically significant (p
Summary
In this modern and fast evolving world the demand and usage of air-conditioners is highly increased .Almost every workplace, school and home uses air-conditioners [1]. Air conditioners are destructive to the environment and are responsible for global warming by directly affecting the ozone formation leading to the depletion of ozone layer. It is the major factor for aggravating the chronic obstructive pulmonary disease (COPD) and it paves the way for many severe acute respiratory syndrome and many other airborne infectious agents [3].Contamination of air conditioner is the major cause for hyperventilation pneumonitis [4]. Rapid influx of cold dry air increases the risk of bronchoconstriction in asthma patients due to the dehydration of the air pathway. Technical and hygienic features of air intake must be ensured to maintain a good indoor air quality
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