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Chinese Journal of Critical Care Medicine(Electronic Edition) ›› 2022, Vol. 15 ›› Issue (04): 271-278. doi: 10.3877/cma.j.issn.1674-6880.2022.04.002

• Original Article • Previous Articles     Next Articles

Risk factors for failure of sequential high-flow nasal cannula oxygen therapy in patients with respiratory failure after weaning from invasive ventilation

Xiaoqin Li1, Lihong Weng1, Sheng Lin1, Huaqiang He1, Hongru Li1, Yusheng Chen1, Nengluan Xu1,()   

  1. 1. Department of Respiratory Medicine, Fujian Provincial Hospital, Provincial Clinic College of Fujian Medical University, Fuzhou 350001, China
  • Received:2021-08-04 Online:2022-08-31 Published:2022-09-26
  • Contact: Nengluan Xu

Abstract:

Objective

To investigate the failure rate and risk factors of sequential high-flow nasal cannula oxygen therapy (HFNC) in patients still with respiratory failure after weaning from invasive ventilation.

Methods

Patients who accepted sequential HFNC after weaning from invasive ventilation in the ICU of Fujian Provincial Hospital from January 1st 2017 to March 31st 2019 were retrospectively analyzed. Patients were divided into the HFNC success group (113 cases) and HFNC failure group (32 cases) according to the success or failure of HFNC. The clinical data and laboratory indicators were compared between the two groups. Logistic regression was used to analyze the independent risk factors for HFNC treatment failure.

Results

The differences between the two groups were statistically significant in the following factors: the causes of intubation (χ2 = 11.224, P = 0.024), chronic heart failure (χ2 = 4.863, P = 0.027), valvular heart disease (χ2 = 6.435, P = 0.011), positive respiratory pathogens (χ2 = 8.909, P = 0.003), sequential organ failure assessment score (Z = 2.138, P = 0.032) and acute physiology and long-term health evaluation Ⅱ score (t = 2.307, P = 0.023) on the day of extubation, the use of vasoactive drugs (χ2 = 4.153, P = 0.042) and nebulized N-acetylcysteine (χ2 = 4.531, P = 0.033) during intubation, and neutrophil count (t = 2.170, P = 0.032), lymphocyte count <0.8 × 109/L (χ2 = 5.941, P = 0.024) and procalcitonin (Z = 2.656, P = 0.008) within 2 days before extubation. Multivariate Logistic regression analysis showed that the total number of peripheral blood lymphocytes <0.8 × 109/L within 2 days before extubation [odds ratio (OR) = 2.898, 95% confidence interval (CI) (1.059, 7.935), P = 0.038] and positive respiratory pathogens [OR = 4.617, 95%CI (1.463, 14.568), P = 0.009] were independent risk factors for HFNC failure.

Conclusion

The peripheral blood lymphocyte count <0.8 × 109/L within 2 days before extubation and positive respiratory pathogens are independent risk factors for sequential HFNC failure in patients with respiratory failure after extubation.

Key words: Intubation, Extubation, Sequential, High-flow nasal cannula oxygen therapy, Failure

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