Abstract: Objective
To explore the effect of interventional respiratory therapy on postoperative respiratory function in infants with congenital heart disease.
Methods
Totally 40 children with congenital heart disease were randomly divided into control group(n=20) and observation group(n=20), who were hospitalized in Thoracic Surgery of Children's Hospital of Hunan Province from November 2017 to April 2018. The control group was treated with the routine respiratory therapy, and the observation group was treated with the interventional respiratory therapy. The auxiliary time of the ventilator, the time of staying in the CICU, the incidence rate of the secondary air tube, the blood gas analysis index, the ventilation/ blood flow ratio and the results of the chest film in both groups were compared.
Results
The auxiliary time of the ventilator and the time of staying in the CICU were significantly shorter in observation group than in control group(P<0.05). The incidence rate of the secondary air tube in observation group (10.0%, 2/20) was significantly lower than that in control group(65.0%, 13/20) and the difference was statistical significant(P<0.05). After treatment, the blood PCO2 and PO2 was significantly better in observation group than in control group(P<0.05). There was no significant difference in the blood oxygen saturation between the two groups(P＞0.05). However, the incidence of complications in the observation group(5.0%, 1/20) were lower than that in the control group(55.0%, 11/20) and the difference was statistically significant(P<0.05). In addition, the ventilation/blood flow ratio was significantly balanced and improved in both groups after treatment.
Conclusion
Interventional respiratory therapy can improve the postoperative respiratory function and lung ventilation in infants with congenital heart disease, and increase the success rate of operation.

Key words: Congenital Heart Disease, Respiratory Therapy, Pulmonary Physiotherapy, Infant