Noninvasive Surrogate for Physiologic Dead Space Using the Carbon Dioxide Ventilatory Equivalent: Testing in a Single-Center Cohort, 2017–2023
Anoopindar K. Bhalla,
Margaret J. Klein,
Justin Hotz
et al.
Abstract:Objectives:
We sought to evaluate the association between the carbon dioxide (co
2) ventilatory equivalent (VEqco
2 = minute ventilation/volume of co
2 produced per min), a marker of dead space that does not require a blood gas measurement, and mortality risk. We compared the strength of this association to that of physiologic dead space fraction (VD/Vt = [Paco
2
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