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Published on: July 18, 2014
Risk factors and early outcomes of chylothorax following congenital cardiac surgery: A single-center experience
Emine Hekim Yılmaz1, Oktay Korun2, Murat Çiçek3
1Department of Pediatric Cardiology, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Türkiye.
Insights
Chylothorax affects 7.4% of patients after congenital heart surgery, leading to longer hospital stays and higher infection rates. Younger age, infections, and peritoneal dialysis are key risk factors, but mortality is not significantly increased.
Area of Science:
- Pediatric Cardiology
- Thoracic Surgery
- Critical Care Medicine
Background:
- Chylothorax is a known complication following congenital cardiac surgery.
- Understanding its incidence and risk factors is crucial for improving patient outcomes.
Purpose of the Study:
- To determine the incidence and risk factors of chylothorax in pediatric cardiac surgery patients.
- To evaluate the impact of chylothorax on early postoperative outcomes.
Main Methods:
- Retrospective analysis of 1,053 patients undergoing congenital heart disease surgery.
- Identification of chylothorax cases and comparison with the general cohort.
- Application of a standardized management protocol for diagnosed chylothorax.
Main Results:
- Chylothorax occurred in 7.4% of patients (78/1,053).
- Risk factors included younger age, peritoneal dialysis, preoperative ventilation, surgical complexity, and reoperations.
- Chylothorax patients experienced longer ventilation times, higher re-intubation and infection rates, and prolonged hospital stays.
Conclusions:
- Chylothorax significantly increases morbidity, including prolonged hospitalization and infection risk, in pediatric cardiac surgery patients.
- Early-age complex cardiac pathologies and reoperations are identified as significant risk factors.
- Standardizing management protocols may improve outcomes despite the lack of a universal therapeutic consensus.
Background:
This study aims to investigate the incidence and risk factors for chylothorax and to evaluate the effect of chylothorax on the early postoperative outcomes following congenital cardiac surgery.
Methods:
A total of 1,053 patients (606 males, 447 females; median age: 12 months; range, 3 days to 48 years) who underwent surgery for congenital heart disease at our institute between January 2018 and December 2019 were retrospectively analyzed. Patients with chylothorax were identified and the data of this cohort was compared with the entire study population. Following the diagnosis of chylothorax, a standardized management protocol was applied to all patients.
Results:
Of 1,053 patients operated, 78 (7.4%) were diagnosed with chylothorax. In the univariate analysis, younger age, peritoneal dialysis, preoperative need for mechanical ventilation, surgical complexity, delayed sternal closure, high vasoactive inotrope score in the first 24 h after operation, residual or additional cardiac lesions which required reoperations were found to be the risk factors for chylothorax (p<0.05). In the multivariate analysis, the correlation persisted with only younger age, infections, and peritoneal dialysis requirement (p<0.05). In the chylothorax group, ventilation times were longer, and re-intubation and infection rates were higher (p<0.05). Although the length of intensive care unit and hospital stay was significantly longer in this patient group, there was no significant association between the development of chylothorax and in-hospital mortality (p>0.05).
Conclusion:
Chylothorax following congenital cardiac surgery is a significant problem which prolongs the length of hospital stay and increases the infection rates. Complex cardiac pathologies which require surgery at early ages and re-operations are risk factors for chylothorax. Although there is no consensus on the most optimal therapeutic strategy, standardizing the management protocol may improve the results.
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