![]() ![]() Dead space was also calculated using the Bohr-Enghoff modification (arterial CO₂ tension (PaCO₂) instead of PACO₂). Both variables were calculated from a mathematical fit of the volumetric capnogram. Methods: In 15 ARDS patients and 15 controls (post-operative cardiac surgery) dead space (V D) was calculated with VC using the Bohr equation: V D/V T = (PACO₂-PeCO₂)/PACO₂, where PACO₂ and PeCO₂ are alveolar and mixed expired CO₂ tension. Our aim was to compare VC with current techniques in ARDS patients and controls. ![]() Recently, a novel technique based on volumetric capnography (VC) was validated. However, dead space calculation is cumbersome using current techniques. This parameter is important in patients with acute respiratory distress syndrome (ARDS) for treatment follow-up, ventilator settings optimization and prognostication. ![]()
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