Limitations
This was a retrospective study, and additional long-term follow-up is
needed to confirm the results. Complete patient data follow up was
approximately 84%; bias and the relatively incomplete follow-up dataset
might limit the validity of our results.
Due to the limitation of a rare congenital heart disease, the small
number of events might influence to the power of statistical analysis.
In condition of a lower-middle income country, the post-operative sepsis
and post-operative pneumonia certainly are predictors for hospital
mortality, but all risk factors (included intraoperative ventricular
septal defect enlargement and secondary aortic cross clamping) are
interrelated.