Early hyperoxia and 28-day mortality in patients on venoarterial ECMO support for refractory cardiogenic shock: a bicenter retrospective propensity score-weighted analysis
Background The mortality rate for a patient with a refractory cardiogenic shock on venoarterial (VA) extracorporeal membrane oxygenation (ECMO) remains high, and hyperoxia might worsen this prognosis. The objective of the present study was to evaluate the association between hyperoxia and 28-day mortality in this setting. Methods We conducted a retrospective bicenter study in two French academic centers. The study population comprised adult patients admitted for refractory cardiogenic shock. The following arterial partial pressure of oxygen ($ PaO_{2} $) variables were recorded for 48 h following admission: the absolute peak $ PaO_{2} $ (the single highest value measured during the 48 h), the mean daily peak $ PaO_{2} $ (the mean of each day’s peak values), the overall mean $ PaO_{2} $ (the mean of all values over 48 h), and the severity of hyperoxia (mild: $ PaO_{2} $ < 200 mmHg, moderate: $ PaO_{2} $ = 200–299 mmHg, severe: $ PaO_{2} $ ≥ 300 mmHg). The main outcome was the 28-day all-cause mortality. Inverse probability weighting (IPW) derived from propensity scores was used to reduce imbalances in baseline characteristics. Results From January 2013 to January 2020, 430 patients were included and assessed. The 28-day mortality rate was 43%. The mean daily peak, absolute peak, and overall mean $ PaO_{2} $ values were significantly higher in non-survivors than in survivors. In a multivariate logistic regression analysis, the mean daily peak $ PaO_{2} $, absolute peak $ PaO_{2} $, and overall mean $ PaO_{2} $ were independent predictors of 28-day mortality (adjusted odds ratio [95% confidence interval per 10 mmHg increment: 2.65 [1.79–6.07], 2.36 [1.67–4.82], and 2.85 [1.12–7.37], respectively). After IPW, high level of oxygen remained significantly associated with 28-day mortality (OR = 1.41 [1.01–2.08]; P = 0.041). Conclusions High oxygen levels were associated with 28-day mortality in patients on VA-ECMO support for refractory cardiogenic shock. Our results confirm the need for large randomized controlled trials on this topic..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:26 |
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| Enthalten in: |
Critical care - 26(2022), 1 vom: 26. Aug. |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Moussa, Mouhamed Djahoum [VerfasserIn] |
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| Links: |
Volltext [kostenfrei] |
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| BKL: | |
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| Themen: |
| Anmerkungen: |
© The Author(s) 2022 |
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| doi: |
10.1186/s13054-022-04133-7 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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OLC2131836031 |
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| 245 | 1 | 0 | |a Early hyperoxia and 28-day mortality in patients on venoarterial ECMO support for refractory cardiogenic shock: a bicenter retrospective propensity score-weighted analysis |
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| 520 | |a Background The mortality rate for a patient with a refractory cardiogenic shock on venoarterial (VA) extracorporeal membrane oxygenation (ECMO) remains high, and hyperoxia might worsen this prognosis. The objective of the present study was to evaluate the association between hyperoxia and 28-day mortality in this setting. Methods We conducted a retrospective bicenter study in two French academic centers. The study population comprised adult patients admitted for refractory cardiogenic shock. The following arterial partial pressure of oxygen ($ PaO_{2} $) variables were recorded for 48 h following admission: the absolute peak $ PaO_{2} $ (the single highest value measured during the 48 h), the mean daily peak $ PaO_{2} $ (the mean of each day’s peak values), the overall mean $ PaO_{2} $ (the mean of all values over 48 h), and the severity of hyperoxia (mild: $ PaO_{2} $ < 200 mmHg, moderate: $ PaO_{2} $ = 200–299 mmHg, severe: $ PaO_{2} $ ≥ 300 mmHg). The main outcome was the 28-day all-cause mortality. Inverse probability weighting (IPW) derived from propensity scores was used to reduce imbalances in baseline characteristics. Results From January 2013 to January 2020, 430 patients were included and assessed. The 28-day mortality rate was 43%. The mean daily peak, absolute peak, and overall mean $ PaO_{2} $ values were significantly higher in non-survivors than in survivors. In a multivariate logistic regression analysis, the mean daily peak $ PaO_{2} $, absolute peak $ PaO_{2} $, and overall mean $ PaO_{2} $ were independent predictors of 28-day mortality (adjusted odds ratio [95% confidence interval per 10 mmHg increment: 2.65 [1.79–6.07], 2.36 [1.67–4.82], and 2.85 [1.12–7.37], respectively). After IPW, high level of oxygen remained significantly associated with 28-day mortality (OR = 1.41 [1.01–2.08]; P = 0.041). Conclusions High oxygen levels were associated with 28-day mortality in patients on VA-ECMO support for refractory cardiogenic shock. Our results confirm the need for large randomized controlled trials on this topic. | ||
| 650 | 4 | |a Cardiogenic shock | |
| 650 | 4 | |a ECMO | |
| 650 | 4 | |a Hyperoxia | |
| 650 | 4 | |a Mortality | |
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| 700 | 1 | |a Lamer, Antoine |4 aut | |
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