Partial arterial carbon dioxide and oxygen pressure in patients with cardiogenic shock

In patients with acute cardiovascular diseases, hypocapnia, hypoxia and hyperoxia are known to be associated with increased mortality. This monocentric prospective registry study included 238 consecutive patients with cardiogenic shock (CS). The study aimed to assess the prognostic impact of partial...

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Main Authors: Rusnak, Jonas (Author) , Schupp, Tobias (Author) , Weidner, Kathrin (Author) , Ruka, Marinela (Author) , Egner-Walter, Sascha (Author) , Schmitt, Alexander (Author) , Akın, Muharrem (Author) , Mashayekhi, Kambis (Author) , Ayoub, Mohamed (Author) , Behnes, Michael (Author) , Akın, Ibrahim (Author)
Format: Article (Journal)
Language:English
Published: 09 May 2025
In: Internal and emergency medicine
Year: 2025, Volume: 20, Issue: 4, Pages: 1077-1086
ISSN:1970-9366
DOI:10.1007/s11739-025-03926-2
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1007/s11739-025-03926-2
Verlag, kostenfrei, Volltext: https://link.springer.com/article/10.1007/s11739-025-03926-2
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Author Notes:Jonas Rusnak, Tobias Schupp, Kathrin Weidner, Marinela Ruka, Sascha Egner-Walter, Alexander Schmitt, Muharrem Akin, Kambis Mashayekhi, Mohamed Ayoub, Michael Behnes, Ibrahim Akin

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520 |a In patients with acute cardiovascular diseases, hypocapnia, hypoxia and hyperoxia are known to be associated with increased mortality. This monocentric prospective registry study included 238 consecutive patients with cardiogenic shock (CS). The study aimed to assess the prognostic impact of partial arterial carbon dioxide (PaCO2) and oxygen pressure (PaO2) on 30-day all-cause mortality. Statistical analyses included t-tests, Spearman´s correlation, Kaplan-Meier and Cox regression analyses. No difference was found between quartiles of PaCO2 (log-rank p = 0.416) and PaO2 (log-rank p = 0.946) in the entire cohort. In the subgroup of patients with ventilation on admission, patients with PaCO2 ≤ 33 mmHg showed the highest 30-day all-cause mortality compared to the other quartiles (82.6% vs. 46.9% vs. 54.0% vs. 59.6% log-rank p = 0.026). No differences were found between levels of PaO2, when stratified by quartiles (log-rank p = 0.895). After differentiation between patients with PaCO2 ≤ 33 mmHg and PaCO2 > 33 mmHg the association with 30-day all-cause mortality remained significant (82.6% vs. 54.5% log-rank p = 0.006) in ventilated patients, whereas still no difference could be seen in the entire cohort (log-rank p = 0.264). Even after multivariable adjustment PaCO2 ≤ 33 mmHg remained an independent risk factor for 30-day all-cause mortality (HR 1.936; 95% CI 1.131-3.316; p = 0.016) in ventilated CS-patients. In conclusion, no association was found between different levels of PaCO2 and PaO2 with 30-day all-cause mortality in patients with CS. However, in the subgroup of CS-patients requiring ventilation, PaCO2 ≤ 33 mmHg was associated with an increased 30-day all-cause mortality. 
650 4 |a Acute Heart Failure 
650 4 |a Anesthesiology 
650 4 |a Carbon dioxide 
650 4 |a Cardiogenic shock 
650 4 |a Intensive Care Medicine 
650 4 |a Mortality 
650 4 |a Oxygen 
650 4 |a Prognosis 
650 4 |a Respiratory distress syndrome 
650 4 |a Risk Factors 
650 4 |a Ventilation 
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