A Review of Instrumentation for Lung Volume Estimation for Diagnosis of Pulmonary Disorders

Did you know that chronic respiratory diseases affect more than 400 million people worldwide? This number significantly increased amidst the COVID-19 pandemic. Many individuals with respiratory issues are often unaware of their condition until it has progressed to a critical stage. Respiratory disorders are considerably difficult to diagnose directly, as most diagnoses rely on indirect measurements, such as the estimation of lung volumes. Over the years, various instrumentation techniques have been developed to assess lung function. Measurement started with traditional spirometry and has now extended to modern technologies that utilize the power of the Internet of Things (IoT) and telemetry.