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Article Dans Une Revue Respiratory Care Année : 2023

Impact of Arterial CO(2) Retention in Patients With Moderate or Severe ARDS

Résumé

BACKGROUND: Lung-protective ventilation (reduced tidal volume and limited plateau pressure) may lead to CO(2) retention. Data about the impact of hypercapnia in patients with ARDS are scarce and conflicting. METHODS: We performed a non-interventional cohort study with subjects with ARDS admitted from 2006 to 2021 and with P(aO(2)) /F(IO(2)) ≤ 150 mm Hg. We examined the association between severe hypercapnia (P(aCO(2)) ≥ 50 mm Hg) on the first 5 days after the diagnosis of ARDS and death in ICU for 930 subjects. All the subjects received lung-protective ventilation. RESULTS: Severe hypercapnia was noted in 552 subjects (59%) on the first day of ARDS (day 1); 323/930 (34.7%) died in the ICU. Severe hypercapnia on day 1 was associated with mortality in the unadjusted (odds ratio 1.54, 95% CI 1.16-1.63; P = .003) and adjusted (odds ratio 1.47, 95% CI 1.08-2.43; P = .004) models. In the Bayesian analysis, the posterior probability that severe hypercapnia was associated with ICU death was > 90% in 4 different priors, including a septic prior for this association. Sustained severe hypercapnia on day 5, defined as severe hypercapnia present from day 1 to day 5, was noted in 93 subjects (12%). After propensity score matching, severe hypercapnia on day 5 remained associated with ICU mortality (odds ratio 1.73, 95% CI 1.02-2.97; P = .047). CONCLUSIONS: Severe hypercapnia was associated with mortality in subjects with ARDS who received lung-protective ventilation. Our results deserve further evaluation of the strategies and treatments that aim to control CO(2) retention.
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Dates et versions

hal-04061274 , version 1 (12-07-2023)

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Paternité - Pas d'utilisation commerciale

Identifiants

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Adel Maamar, Flora Delamaire, Florian Reizine, Mathieu Lesouhaitier, Benoit Painvin, et al.. Impact of Arterial CO(2) Retention in Patients With Moderate or Severe ARDS. Respiratory Care, 2023, 68 (5), pp.582-591. ⟨10.4187/respcare.10507⟩. ⟨hal-04061274⟩
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