Lack of effect of an in-line filter on cardiopulmonary exercise testing variables in healthy subjects.

Autor: Abbasi, Asghar, Ahmad, Khadije, Ferguson, Carrie, Soriano, April, Calmelat, Robert, Rossiter, Harry B., Casaburi, Richard, Stringer, William W., Porszasz, Janos
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Zdroj: European Journal of Applied Physiology; Mar2024, Vol. 124 Issue 3, p1027-1036, 10p
Abstrakt: Purpose: Pathogen transmission during cardio-pulmonary exercise testing (CPET) is caused by carrier aerosols generated during respiration. Methods: Ten healthy volunteers (age range: 34 ± 15; 4 females) were recruited to see if the physiological reactions to ramp-incremental CPET on a cycle ergometer were affected using an in-line filter placed between the mouthpiece and the flow sensor. The tests were in random order with or without an in-line bacterial/viral spirometer filter. The work rate aligned, time interpolated 10 s bin data were compared throughout the exercise period. Results: From rest to peak exercise, filter use increased only minute ventilation ( V ˙ E) (Δ V ˙ E = 1.56 ± 0.70 L/min, P < 0.001) and tidal volume (VT) (ΔVT = 0.10 ± 0.11 L, P = 0.014). Over the entire test, the slope of the residuals for V ˙ CO2 was positive (0.035 ± 0.041 (ΔL/L), P = 0.027). During a ramp-incremental CPET in healthy subjects, an in-line filter increased V ˙ E and VT but not metabolic rate. Conclusion: In conclusion, using an in-line filter is feasible, does not affect appreciably the physiological variables, and may mitigate risk of aerosol dispersion during CPET. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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