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Clinical characteristics and prognosis of the patients with cardiogenic shock treated with invasive ventilation and non-invasive ventilation |
Li Yu-dong, Yang Qing-quan, Mao Shao-fen, Zhang Ming-lei, Wang Xing, Zhan Fei-fei |
First Special Ward, Nanyang City Central Hospital, Nanyang 473000, China |
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Abstract Objective To analyze the clinical characteristics and prognosis of the patients with cardiogenic shock (CS) treated with invasive ventilation and non-invasive ventilation. Methods 386 CS patients admitted to ICU Department of Cardiology in our hospital were included. The patients were divided into three groups according to the different modes of ventilation in ICU after 24 h: invasive mechanical ventilation group (n=241), non-invasive mechanical ventilation group (n=52) and oxygen supplementation group (n=93). The clinical characteristics, treatment and prognosis of the patients treated with invasive ventilation and non-invasive ventilation were evaluated. Results The invasive ventilation group was more prone to delirium[200 (83.0%) vs. 16 (30.8%), χ2=60.199, P<0.001], higher lactic acid in arterial blood[3.9 (2.4, 7.1) mmol/L vs. 1.9 (1.6, 2.8) mmol/L, U=13.700, P<0.001]and more severe metabolic acidosis (lower HCO-3)[19.7 (15.8, 21.6) mmol/L vs. 22.1 (20.6, 24.1) mmol/L, U=3.134, P=0.002]. It suggests that there are serious tissue hypoperfusion and shock in patients receiving invasive mechanical ventilation. The patients in the non-invasive mechanical ventilation group had higher N-terminal prohormone of brain natriuretic peptide[7376.8 (2054.6, 17373.7) pg/mL vs. 2368.3 (558.2, 8564.7) pg/mL, U=2.261, P=0.023], suggesting that patients with non-invasive mechanical ventilation may have ventricular dilatation and increased filling pressure. There was no significant difference in cumulative 90-day mortality between two groups (Log rank P=0.163). Multivariate Logistic regression analysis showed that the independent factors associated with 90-day mortality were delirium, coronary artery bypass grafting, acute coronary syndrome, arterial lactate and partial pressure of oxygen in arterial blood (all P<0.05). Ventilation was not associated with 90-day mortality (P=0.856). Conclusion The patients with CS can safely use non-invasive mechanical ventilation to treat patients with respiratory failure. The different ventilation methods were not related to the prognosis of the patients.
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About author:: Li Yu-dong, E - mail: dyfhzh@163.com |
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