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Updated: Aug 30, 2026

A Structured Approach to Extubation in Mechanically Ventilated Rats
Published on: July 18, 2025
[The risk factors of failed extubation after cardiac surgery in infants]
Qiang Shu1, Lin-hua Tan, Li-juan Wu
1Children's Hospital, Zhejiang University, Hangzhou 310003, China.
Insights
Failed extubation in infants after heart surgery is often linked to postoperative pneumonia and preoperative pulmonary hypertension. Addressing these conditions can improve successful extubation rates in pediatric cardiac patients.
Area of Science:
- Pediatric Cardiac Surgery
- Critical Care Medicine
- Neonatal Physiology
Context:
- Infants undergoing congenital heart surgery face significant risks, including failed extubation (FE).
- Understanding risk factors for FE is crucial for optimizing post-operative care and outcomes in this vulnerable population.
- Previous research has identified various factors, but specific risk predictors for FE in infants after cardiac procedures require further elucidation.
Purpose:
- To investigate the independent risk factors associated with failed extubation in infants following congenital heart surgery.
- To identify key clinical indicators that predict the likelihood of extubation failure in this specific patient group.
- To provide data that can inform clinical decision-making and targeted interventions to reduce FE.
Summary:
- This study analyzed 227 infants (<1 year) undergoing congenital heart surgery, with 13.22% experiencing failed extubation.
- Logistic regression identified prolonged postoperative ventilation, postoperative pneumonia, and preoperative pulmonary hypertension as significant risk factors for FE.
- Postoperative pneumonia and preoperative pulmonary hypertension emerged as the two independent predictors of failed extubation (P < 0.05).
Impact:
- Identifies postoperative pneumonia and preoperative pulmonary hypertension as critical risk factors for failed extubation in infants post-cardiac surgery.
- Highlights the importance of proactive management and treatment of pulmonary complications and hypertension to enhance extubation success.
- Provides evidence to guide clinical strategies aimed at reducing the incidence of failed extubation and improving patient recovery after pediatric cardiac surgery.
Objective:
To investigate the risk factors of failed extubation (FE) after cardiac surgery in infants.
Methods:
227 infants (< 1 year of age) who underwent congenital heart surgery in the period between January 2001 and December 2002 were included in this study. Logistic regression analysis was used to assess the risk factors of failed extubation. Odds Ratio was used to suppose the degree of relationship between FE and risk factors.
Results:
Out of the 227 infants undergoing congenital heart operations, 30 (13.22%) cases failed at the extubation. Risk factors for failed extubation included postoperative duration of ventilation (EOR = 12.0; 95% CI = 4.04 - 35.71; P = 0.000 9), postoperative pneumonia (EOR = 5.33; 95% CI = 1.81 - 15.68; P = 0.002) and preoperative pulmonary hypertension (EOR = 2.80; 95% CI = 1.21 - 10.45; P = 0.041). Postoperative pneumonia and preoperative pulmonary hypertension were the 2 independent risk factors for failed extubation (P < 0.05).
Conclusions:
Postoperative pneumonia and preoperative pulmonary hypertension are major risk factors for failed extubation after congenital heart surgery in infants. To prevent and to treat postoperative pneumonia and pulmonary hypertensive crises will be beneficial to the successful extubation.
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