2017年10月17日 · The test was part of a pre-op workup for a patient with lung cancer who also had a diagnosis of COPD. I had looked at the spirometry results first (we always do spirometry pre- and post-exercise) and seeing that the patient had severe airway obstruction (FEV1 < 50% of predicted) assumed the review would be relatively straightforward.

2013年3月4日 · When we went through our hardware and software upgrade last August, one of the changes we made was to stop reporting the FEF25%-75% (AKA MMEF, MMFR, MMF). The pulmonary physicians had long since stopped using this value when assessing spirometry results and we had kept it on our reports as long as we did only for inter-laboratory compatibility.

2023年5月14日 · The thyroid gland is located across the front of the upper airway a short distance below the larynx. An enlarged thyroid gland is known as a goiter.

2017年2月8日 · It is unusual to see a Ve that is greater than 100% of predicted. We derive our predicted max Ve from baseline spirometry and calculate it using FEV1 x 40. We have tried performing pre-exercise MVV tests in the past and using the maximum observed MVV as the predicted maximum Ve but our experience with this has been poor.

2017年7月17日 · Richard Johnston on 2019 ATS/ERS Spirometry Standards; Tshay on Blog Author; Brett on 2019 ATS/ERS Spirometry Standards; Rob on CPET Test Interpretation, Part 4: Interpretation and Summary; Andrey on CPET Test Interpretation, Part 3: Circulation; Richard Johnston on CPET Test Interpretation, Part 3: Circulation; Andrey on CPET Test ...

Although normal values for the FEV 0.5 were included in the reference equations from the 1961 VA-Army and Kunudson’s 1976 spirometry study this measurement has rarely been used in adults but has instead found extensive use when measuring and reporting spirometry in infants and children. Continue reading →

2014年11月8日 · Posted in Flow-Volume Loop, Interpretation, Spirometry | Tagged FIF25-75, MEF50%, MIF50%, PIF | 2 Replies When a Pulmonary Mechanical Limitation to exercise isn’t the real limitation Posted on October 26, 2014 by Richard Johnston

2015年7月8日 · Recently I reviewed a set of completely irreproducible spirometry results. The patient had made eight attempts and the FVC, FEV1 and Peak Flow were different every time. In particular, there were frequent stops and starts during exhalation.

Richard Johnston on 2019 ATS/ERS Spirometry Standards; Tshay on Blog Author; Brett on 2019 ATS/ERS Spirometry Standards; Rob on CPET Test Interpretation, Part 4: Interpretation and Summary; Andrey on CPET Test Interpretation, Part 3: Circulation; Richard Johnston on CPET Test Interpretation, Part 3: Circulation; Andrey on CPET Test ...

Richard Johnston on 2019 ATS/ERS Spirometry Standards; Tshay on Blog Author; Brett on 2019 ATS/ERS Spirometry Standards; Rob on CPET Test Interpretation, Part 4: Interpretation and Summary; Andrey on CPET Test Interpretation, Part 3: Circulation; Richard Johnston on CPET Test Interpretation, Part 3: Circulation; Andrey on CPET Test ...