Role of impulse oscillometry in diagnosis and follow-up in bronchial asthma.

Background: Asthma is defined as a chronic inflammatory disorder of the airways, characterized by bronchial hyper-responsiveness and variable airflow obstruction, that is often reversible either spontaneously or with treatment. Impulse oscillometry is a newer diagnostic modality for asthma. It is based on the measurement of sound waves reflected by airway resistance. Objectives: The aim of this article is to study the role of impulse oscillometry in diagnosis and follow-up of bronchial asthma. Methods: Fifty-five clinically diagnosed bronchial asthma patients were evaluated with spirometry and impulse oscillometry before and after 3 months of inhaled treatment. The sensitivity to diagnose and follow-up was compared using proper statistical tests. Results: Impulse oscillometry was superior to spirometry in diagnosing bronchial asthma and also in accessing the treatment response after 3 months. Conclusion: Impulse oscillometry is superior in predicting bronchial asthma and its parameters are also more sensitive in accessing treatment response. It can replace spirometry as it is easy to perform and effort independent.

Comparison in Outcome of Patients with Post TB-Destroyed Lung and COPD Admitted with Respiratory Failure.

INTRODUCTION: The term post TB sequelae is usually used to describe the destructive lung parenchymal changes due to pulmonary tuberculosis, which occur over years, and cause chronic airway obstruction as well as restriction. Furthermore, post TB sequelae and COPD are common causes of acute exacerbation with respiratory failure in Indian setting. AIM OF THE STUDY: To compare the outcome of patients with post TB sequelae and COPD admitted with respiratory failure Methodes: 62 Post TB sequelae and 79 COPD patients admitted in respiratory failure were treated as per standard ICU protocols. Outcome of these patients in these groups were compared with respect to mortality, morbidity and requirement of type ventilatory support. RESULTS: It was observed that duration of stay, morbidity and mortality in these groups was comparable and difference was not statistically significant. CONCLUSION: The presentation and outcome of COPD and Post TB destroyed lung patients is similar, so Post TB Destroyed lung patients should be treated as per COPD guidelines.