DOI: http://dx.doi.org/10.18203/2320-6012.ijrms20193938

Pulmonary functions in car air conditioner users and non-air conditioner users in tertiary care centre, South Tamilnadu, India

Hoshea Jeba Ruth S., Lisha Vincent

Abstract


Background: Air conditioners are used extensively these days of the modern lifestyle. Inhalation of cold dry air while using Air conditioners causes bronchoconstriction due to which alteration may occur in pulmonary function. This study was aimed to compare the Pulmonary Function tests of Car AC users and non AC users.

 Methods: The Study included 52 employees not exposed to car air conditioner as a control (group I) and 52 employees exposed to car air conditioner  with minimum exposure of 1 hour per day for 6 months as a subject (group II). Pulmonary function tests were performed using computerised spirometer. Statistical analysis was done by unpaired t test.

Results: Age, Height and weight are not statistically significant between study group and control group. Forced vital capacity, forced expiratory volume in 1 second, Ratio of Forced vital capacity and Forced expiratory volume in 1 second, Inspiratory reserve volume, Expiratory reserve volume, Maximum voluntary ventilation are decreased in car air conditioner users compared to non-users, but was not significant. Forced expiratory flow (FEF), Peak expiratory flow rate (PEFR) values shows statistically significant decreased in car air conditioner users.

Conclusions: The present study shows hyper-responsive airways on exposure to cold air which leads to bronchoconstriction. The significant decrease in PEFR, FEF suggest that upper airways as well as smaller airways are affected on exposure to car AC. So, Exposure to car Air Conditioner leads to risk of developing respiratory dysfunction.


Keywords


Air conditioner, Forced expiratory flow, Peak expiratory flow rate, Pulmonary Function test

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References


Vidya G, Kumar BA, Kalpana M, Chand K. Pulmonary function tests in air conditioner users. Int J Med Biomed Res 2014;3(2):75-80.

Choudhari SP, Doiphode RS, Zingade US, Munibuddin KMBA. Study of Pulmonary Functions in Air Conditioned Car Drivers. A Cross-sectional study. IOSR J Dent Med Sci. 2014;13:48-50.

Babitha R, Rangarajan R, Muhil M, Basavarajaiah MG. Pulmonary function tests in air conditioner users. J Clin Diagn Res. 2011;5(3):532-5.

Sabade SB, Vilkhe BB, Borade NG. Pulmonary Ventilation in air conditioner users in Pravara Rural Hospital. Pravara Med Rev. 2013;5(2):4-6.

Modl M, Eber E, Steinbrugger B, Weinhandl E, Zach MS. Comparing methods for assessing bronchial responsiveness in children: single step cold air challenge, multiple step cold air challenge and histamine provocation. Eur Respir J 1995;8(10):1742-7.

Fontanari P, Burnet H, Carolin M, Zattara H, Jammes Y. Changes in airway resistance induced by nasal inhalation of cold dry, dry, or moist air in normal individuals. J Appl Physiol. 1996;81(4):1739-43.

Nielsen KG, Bisgaard H. Lung function response to cold air challenge in asthmatic and healthy children of 2-5 years of age. Am J Respir Crit Care Med. 2000;161(6):1805-7.

Fontanari P, Hartmann MCZ, Burnet H, Jammes Y. Nasal eupnoeic inhalation of cold dry air increases airway resistance in asthmatic patients. Eur Respir J 1997;10(10):2250-4.

Caire N, Cartier A, Ghezzo H , Malo GL. Influence of the duration of cold dry air on the resulting bronchoconstriction in asthmatic subjects. Eur Respir J. 1989;2(8):741-5.

Koskela HO. Cold air provoked respiratory symptoms: The Mechanism and Management. Int J Circumpolar Health. 2007;66(2):91-100.

Solanki HK, Gojiya AJ, Dixit R, Jadeja JM. Study of Pulmonary Functions in Air Conditioner users and non-users. Indian J App Basic Med Res. 2013;15(21):2035-52.

Ranu H, Wilde M, Madden B. Pulmonary Function Tests. Ulster Med J. 2011;80(2):84-90.

Petty TL. Benefits of and barriers to the widespread use of spirometry. Curr Opin Pulm Med. 2005;11(2):115-20.

Braun L, Wolfgang M, Dickersin k. Defining race/ethnicity and explaining difference in research studies on lung function. Eur Respir J 2013;41(6):1362-70.

Ihenacho HN. Air-conditioning and health: effect on pulse and blood pressure of young healthy Nigerians. Cent Afr J Med. 1990;36(6):147-50.

George SO, Chandan LM. A Study of Peak Expiratory Flow Rate In Air-Condition Users. Int J Basic App Physiol. 2012;1(1):151-4.

Hall JE. Guyton and Hall Textbook of Medical Physiology. 12th ed. Philadelphia: Saunder Elsevier; 2011:465-75.

Neilsen KG. Lung function and bronchial responsiveness in young children. Dan Med Bull 2006;53:46-75.

Hulke SM, Thakare A, Patil P, Shetel SA, Vaidya YP. Pulmonary functions in air conditioner users. Am Rev Respir Dis 1986;134:990-3.

Solanki HK, Gojiya AJ, Dixit R, Jadeja JM. Study of Pulmonary Functions in air Conditioner users and non-users. Indian J App Basic Med Res. 2013;15B(21):2035-52.

Khaliq F, Sharma S, Tandon OP. Pulmonary Functions in air conditioner users. Indian J Physiol Pharmacol. 2006;50(1):67-72.