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2,3-BPG

2,3-bisphosphoglycerate

DRG

dorsal respiratory group

ERV

expiratory reserve volume

FEF25%–75%

forced expiratory flow between 25% and 75% of the forced vital capacity

FEV1

forced expiratory volume in 1 second

FIO2

fractional concentration of inspired oxygen

FRC

functional residual capacity

FVC

forced vital capacity

HbA

adult hemoglobin

HbF

fetal hemoglobin

[HCO3]p

plasma bicarbonate

HPV

hypoxic pulmonary vasoconstriction

IC

inspiratory capacity

IRV

inspiratory reserve volume

MPAP

mean pulmonary artery pressure

MLAP

mean left atrial pressure

MVV

maximum voluntary ventilation

MW

molecular weight

PBF

pulmonary blood flow

PEEP

positive end-expiratory pressure

PEF

peak expiratory flow

PVR

pulmonary vascular resistance

RV

residual volume

SVR

systemic vascular resistance

TLC

total lung capacity

V˙A

alveolar ventilation

V˙A/Q˙c or V˙/Q˙

ventilation-perfusion ratio

VC

vital capacity

VD/VT

ratio of dead space to tidal volume

VRG

ventral respiratory group

VT

tidal volume

V˙O2

oxygen consumption

V˙CO2

carbon dioxide production

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