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Resp & Circ Physiology
Deadspace & Alveolar Ventilation
6
Physiology
Undergraduate 1
01/27/2009

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Cards

Term
%Vd/Vt
Definition
Percent of deadspace volume compared to the tidal volume obtained by using Bohr equation: FACO2 - FECO2/FACO2
Term
Vd
Definition
Volume of deadspace in one breath - this is physiologic deadspace (%Vd/Vt x Vt)
Term
V(dot)d
Definition
Volume of deadspace per minute (Vd x f)
Term
VA
Definition
Volume of alveolar ventilation in one breath (Vt - Vd = VA)
Term
V(dot)A
Definition
Volume of alveolar ventilation in one minute [VA x f = V(dot)A]
Term
Vd(physiologic)
Definition
This is total deadspace, comprised of anatomic deadspace (~1ml/lb wt.) & alveolar deadspace
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