My research group is collecting data using a spirometer that only analyzes exhalation and records data on FVC, FEV1, and other parameters.
The command to perform the test is as follows: Inhale maximally, place the spirometer in your mouth, and exhale explosively. Continue exhaling until you hear a beep (approximately 2 seconds).
The problem is that, in some cases, the FVC and FEV1 values are recorded as the same. Our criteria require different FVC and FEV1 values, at least 2 seconds of exhalation, or the presence of a plateau in a volume-time (V-T) chart.
The volunteers report that they cannot sustain exhalation for 2 seconds without obstructing the flow (exhaling less air to extend the duration), even though they are healthy and have no lung disease.
Can anyone help me?
might be technical problem so always check the spirometer before data collection
Spirometer confirmation that these patient are affected then after that's we collect the data from patient
Always follow the Standardised protocol to perform spirometer It will be helpful in minimising error
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