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Correlation of duration of diabetes and pulmonary function tests in type 2 diabetes mellitus patients

Authors:Kanya Kumari DH , Nataraj S M , Devaraj H S
Int J Biol Med Res. 2011; 2(4): 1168 -1170  |  PDF File


Objectives and background –Diabetes Mellitus (DM) is a metabolic disorder precipitating micro vascular, macro vascular complications and peripheral vascular diseases. Less has been known about the after effects of diabetes on lungs. So this work was carried out to know the relation between duration of diabetes and pulmonary function tests (PFT) in Type 2 DM patients. Normal lung mechanism and gas exchange are influenced by integrity of pulmonary connective tissues and microvasculature. Abnormality in either of these two structural components of lung leads to development of variations in lung functions. Method-The study group consists of 90 patients with different durations of diabetes (age, sex, height, weight matched). PFT were measured by Medspiror. The data was statistically analyzed by using cross tabs procedure (contingency coefficient test), descriptive statistics, Chi square test. Results and conclusion- Among 90 patients 70 had restrictive, 12 had obstructive and remaining 8 had normal spirometric pattern. Even though Type2 diabetic patients did not have any respiratory symptoms they did have underlying sub clinical restrictive patterns of lung functions. Type 2 Diabetes mellitus is associated with restrictive pattern of respiratory abnormality. As the duration of diabetes increases the restrictive profile is more prominent. Spirometry remains a cost effective, a simple non-invasive diagnostic tool and its judicious use can give warning signal for patients to take early preventive measures.