This study entitled “STUDY OF PULMONARY FUNCTION TESTS IN PATIENTS OF DIABETES MELLITUS (NIDDM) WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE OR ASTHMA” was carried out in the period from July 2006 to October 2008.
A total of consecutive 45 patients were included in the study depending on the criteria till the sample size of each group was met. The groupwise division of patients was as follows:
Group A: Type 2 DM patients with Chronic Obstructive Pulmonary Disease (n=15)
Group B: Type 2 DM patients with Asthma (n=15)
Group C: A control group of healthy non diabetic, non smoking subjects with no chest complaints (n=15)
The study shows that spirometry results in type 2 diabetes patients with COPD or asthma require confirmation with further pulmonary function tests in the form of DLCO and lung volume measurements with body plethysmography. This is in accordance with the ATS/ERS 2005 recommendations on interpretative strategies in pulmonary function testing. Also there is definite impairment in health related quality of life in type 2 diabetes patients with COPD or Asthma.
The present study suggests that the decrease in FEV1% and FVC% associated with diabetes might be responsible for variable spirometric findings in addition to the severity of the airway disease, thus necessitating the need for confirmation with further pulmonary function tests in the form of DLCO and lung volume measurements with body plethysmography. These findings are deserving of further research in the form of pathophysiological studies. Also the definite impairment in health related quality of life in type 2 diabetes patients with COPD or asthma necessitates the integration of health related quality of life assessment in the management of these patients.
Table of Contents
1. INTRODUCTION
2. AIMS AND OBJECTIVES
3. REVIEW OF LITERATURE
4. MATERIAL AND METHODS
5. RESULTS
6. DISCUSSION
7. SUMMARY AND CONCLUSION
Research Objectives and Focus
This study aims to assess and compare pulmonary function parameters (including spirometry, lung volumes, and diffusing capacity) in patients with Type 2 diabetes mellitus (NIDDM) who suffer from comorbid chronic obstructive pulmonary disease (COPD) or asthma, while correlating these findings with disease severity, glycemic control, and health-related quality of life.
- Evaluation of pulmonary function in diabetic patients with comorbid airway diseases.
- Correlation between lung function metrics (DLCO, lung volumes) and airflow limitation.
- Relationship between glycemic control (HbA1c) and respiratory health.
- Assessment of impairment in health-related quality of life (HRQoL) using standardized questionnaires.
Excerpt from the Book
PULMONARY FUNCTION IN DIABETES MELLITUS:
Reduction in various pulmonary function parameters has been reported in patients with diabetes over the past three decades, and many reports have plausible pathophysiological mechanisms.
Scuyler et al. [18] investigated pulmonary function in 11 young (21-28 years old) patients with type 1 diabetes and age-matched normal control subjects. This classic study was the first to report measurements of nearly all the available tests of lung function including lung elasticity, capacity to transfer carbon monoxide (DLCO, a surrogate for oxygen transfer capacity), absolute thoracic gas volumes, airflow resistance and maximal forced spirometric pulmonary function tests (PFTs). As their subjects were lifelong nonsmokers without allergies or lung disease, their finding that lung elastic recoil was decreased in these young patients with diabetes was interpreted to reflect effects of diabetes on lung elastic proteins. This was the first suggestion in the literature that the lung may be a target organ in diabetes. Because the elastic structure of the lung supports the intrathoracic airways and helps to maintain their patency, the authors suggested that patients with diabetes were at risk for developing chronic airflow obstruction. While small changes in lung elastic recoil do not have direct clinical implications, subsequent development of chronic airflow obstruction could incur significant disability due to mechanical dysfunction of the lungs and airways.
Sandler et al. [19] in their study, attempted to establish the prevalence and nature of pulmonary dysfunction in a cross section of a diabetic population and the relationship of pulmonary dysfunction to diabetic factors and complications. Forty insulin-dependent diabetic patients, 15 to 60 yr. of age, and forty healthy reference subjects matched for age, sex and race were studied. All subjects were lifelong nonsmokers and had no clinical evidence of past or present respiratory disease. Lung function was assessed from the flow-volume curve, single breath nitrogen washout, static lung elastic recoil and pulmonary diffusion capacity (DLCO/VA) and its components: membrane diffusing capacity (Dm/VA) and pulmonary capillary blood volume (Qc/VA).
Summary of Chapters
1. INTRODUCTION: Provides an overview of diabetes as a systemic disease and introduces the hypothesis that the lungs are a target organ for complications induced by hyperglycemia.
2. AIMS AND OBJECTIVES: Outlines the specific goals of the research, focusing on the evaluation and correlation of pulmonary functions in diabetic patients with obstructive lung diseases.
3. REVIEW OF LITERATURE: Traces the historical understanding of diabetes, COPD, and asthma, and summarizes previous clinical research regarding lung function in diabetic patients.
4. MATERIAL AND METHODS: Describes the study design, patient recruitment across specific departments, definitions of diseases, and the methodology for pulmonary and biochemical testing.
5. RESULTS: Presents the statistical findings regarding age, gender, glycemic control, and the comparative analysis of various pulmonary function test parameters across the study groups.
6. DISCUSSION: Interprets the findings of the study in relation to existing scientific literature and explores the pathophysiological implications of the observed lung function abnormalities.
7. SUMMARY AND CONCLUSION: Recaps the study findings and concludes that spirometry in diabetic patients with obstructive airway diseases should be confirmed with DLCO and plethysmography.
Keywords
Diabetes Mellitus, Type 2 Diabetes, NIDDM, COPD, Asthma, Pulmonary Function Tests, Spirometry, DLCO, Lung Volumes, Plethysmography, Glycemic Control, HbA1c, Microangiopathy, Health-Related Quality of Life, SGRQ.
Frequently Asked Questions
What is the core subject of this research?
The study investigates the pulmonary function profiles of patients with Type 2 diabetes mellitus (NIDDM) who also have comorbid chronic obstructive pulmonary disease (COPD) or asthma.
What are the primary areas of interest within the study?
The study focuses on spirometric performance, diffusing capacity of the lungs (DLCO), static lung volumes, the impact of glycemic control on lung function, and the overall quality of life of these patients.
What is the main objective of the research?
The primary aim is to evaluate pulmonary function parameters in diabetic patients with airway obstruction and to correlate these with the severity of lung disease, the duration of diabetes, and patient quality of life.
Which scientific methodology was employed?
The study utilized a comparative analysis of three groups (Diabetics with COPD, Diabetics with Asthma, and healthy controls) performing spirometry, body plethysmography, and DLCO tests, analyzed via statistical ANOVA and correlation methods.
What does the main body of the work cover?
The main body examines historical literature, clinical diagnostic definitions, detailed experimental methods for lung assessment, and an extensive statistical analysis of the patient data collected between 2006 and 2008.
Which keywords define this study?
The study is characterized by terms such as Diabetes Mellitus, COPD, Asthma, Pulmonary Function Tests, DLCO, and Health-Related Quality of Life.
Why were the participants divided into three specific groups?
The grouping into diabetic patients with COPD (Group A), diabetic patients with asthma (Group B), and healthy controls (Group C) allows for direct comparative analysis of the pulmonary impact of the comorbid conditions relative to a baseline.
What were the major conclusions reached by the author?
The author concludes that spirometry results in diabetic patients with obstructive diseases are variable and should be confirmed with more advanced tests like DLCO and plethysmography to accurately assess the restrictive components of their condition.
- Quote paper
- Gyanshankar Mishra (Author), 2009, Study of pulmonary function tests in patients of diabetes mellitus (NIDDM) with chronic obstructive pulmonary disease or asthma, Munich, GRIN Verlag, https://www.grin.com/document/270472
