Vitalograph copd-6 Respiratory Monitor with Bluetooth and SoftwareFor simple, fast & accurate COPD screening. For the early detection of COPD quickly, simply and accurately Identifies those at risk of COPD at the pre symptomatic stage to allow early medical intervention and facilitate better clinical outcomes Screens out those whose FEV1 is normal, and who therefore do not have COPD, without the risk of false COPD negatives Monitors COPD patients using their 'number', the obstructive index, FEV1 as a percent of