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Abstract
Introduction: Type 2 diabetes mellitus (T2DM) is a chronic wide spread disease associated with the development of various chronic complications in many organs such as kidneys, eyes, nerves and liver. T2DM has a significant impact on lung functions, yet there are still many doubts about correlation between T2DM and lung functions. This study aimed to evaluate correlation between T2DM and lung functions. Methods: The study was carried out on 80 individuals: 40 diabetic patients and 40 non diabetic controls. All subjects were selected from the outpatient clinic of Internal Medicine, Kasr Al Eini Hospital. All the participants were subjected to full history taking, clinical examination, and laboratory measurements of FBS, 2 HPP, and HbA1C and microalbumin in urine. Pulmonary function tests (FVC, FEV1, FEF 25-75%) were carried out on all subjects using Spirometer. Results: this study revealed that T2DM is more frequently encountered in females (87.5%) than males (12.5%) and in old diabetic patients (75%) than young (25%).Lung restriction is more frequently reported among diabetic patients and is statistically significant (P<0.001) compared to non diabetic controls. No correlations between FBG, 2HPP and restrictive hypoventilation were found. Concerning HbA1C the degree of restrictive hypoventilation worsens with poorer control of DM, though not reaching statistical significance