Hernu R, Wallet F, Thiollière F, Martin O, Richard JC, Schmitt Z, et al. Acute respiratory distress syndrome: the Berlin definition. Ranieri VM, Rubenfeld GD, Thompson BT, Ferguson ND, Caldwell E, Fan E, et al. Pulmonary dead-space fraction as a risk factor for death in the acute respiratory distress syndrome. Nuckton TJ, Alonso JA, Kallet RH, Daniel BM, Pittet JF, Eisner MD, Matthay MA. Acute respiratory distress syndrome in adults: diagnosis, outcomes, long-term sequelae, and management. Dead space ventilation-related indices remain hampered by several deflects notwithstanding, for this catastrophic syndrome, they may facilitate better stratifications and identifications of subphenotypes, thereby providing therapy tailored to individual needs.Īcute respiratory distress syndrome Dead space End-tidal-to-arterial PCO2 ratio Physiological dead space fraction Ventilation and perfusion mismatch Ventilatory ratio. These parameters have already been applied to positive end expiratory pressure titration, prediction of responses to the prone position and the field of extracorporeal life support for patients suffering from ARDS. Thus, new attention has been given to this group of dead space ventilation-related indices, such as physiological dead space fraction, ventilatory ratio, and end-tidal-to-arterial PCO 2 ratio, which, albeit distinctive, are all global indices with which to assess the relationship between ventilation and perfusion. Cumulative evidence has demonstrated that the ventilatory ratio closely correlates with mortality in acute respiratory distress syndrome (ARDS), and a primary feature in coronavirus disease 2019 (COVID-19)-ARDS is increased dead space that has been reported recently.
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