A study of clinico-demographic profile and ventilatory pulmonary function tests in type 2 diabetes mellitus

Abstract

Background: Type 2 Diabetes Mellitus (DM) is a non-communicable disease. DM produces damage in small blood vessels characterized by morphologic and biochemical alterations of the capillary basal lamina. These abnormalities have been observed in several organs including the lung. As the prevalence of diabetes is rapidly increasing, it would be important to study pulmonary functions in this sub group. Methods: The present observational study carried out at medicine department. It includes previously diagnosed type 2 DM patients between 31 to 50 years of age, non-smoker, non-pregnant with no major respiratory illness. Ventilatory Pulmonary Function Test (VPFT) which includes FVC, FEV1 and FEV1% were studied in all selected participants. VPFT categorized as per American Thoracic Society (ATS). All collected data analysed using Microsoft Excel 2010. Results: The total of 55 previously diagnosed Type 2 DM cases was recruited. 26 (47.2 %) & 29 (52.7 %) were male & female respectively. 21 (38.2 %) has duration of DM more than 5. 11 (20 %) & 5 (9 %) had neuropathy and retinopathy respectively. 29 (52.7 %) had abnormal pulmonary function test. The Mean FVC (84.11 ± 14.94), Mean FEV1 (84 ± 13.72) & Mean FEV1% was (100.05 ± 7.32) among the study participants. 29 (100.0 %) were restrictive type of abnormality. Conclusion: The reduced lung function is likely being a complication of diabetes mellitus. Lung functions needs to be checked periodically.

A study on accuracy of linear ball guide

“…According to the structure of rolling element, it is divided into ball and roller guides. 2 The linear ball guide is often used for light load, while the roller guide is often used for medium and heavy loads. Since precision and ultra-precision machine tools often bearing light loads, this article focuses on the accuracy of linear ball guide and tries to find the main factor affecting accuracy.…”