Comparative Analysis Of BiPAP And SIMV+Autoflow Of Mechanical Ventilation Mode In Deformity After Treatment Of Infant Congenital Heart Disease

Objective:To investigate and compare the safety and influnces of BIPAP and SIMV+Autoflow ventilation modes in the application of children that after open heart surgery,and assess what kind of ventilation modes is safer, aim to provide a theoretical basis for the mechanical ventilation treatment of congenital heart disease infant.Method: Randomly divided132post-surgical CHD patients that admitted to ICU in the first affiliated hospital of Xinjiang Medical University from April2011to August2012into group A and group B. Include male:55patients, female:77patient. They were received BIPAP and SIMV+Autoflow ventilation respectly. Records respectively into the division (to), at the end of30minutes (t1), at the end of an hour (t2), two hours(t3) and three hours (t3) of the four time points, record patients’ vital signs, blood gas index and breathing mechanics, including the tidal volume (VT), the airway peak pressure (Ppeak) and lung compliance (C), airway resistance (R),minute volume (MV); Comparison the blood gas analysis, airway and compliance of the airway resistance between two groups. Result: A total of132people, including the longest transit time is up to137minutes, the longest and shortest duration of mechanical ventilation are40hours and5hours. Recent5cases died after surgery. The BIPAP group (group A)(n=60) and SIMV+Autoflow group(group B)(n=72) have no significant difference (P>0.05) on the time point (to) of admission in ICU. In the follow time, there were significantly differences (P<0.05) of Peak airway pressure and alveolar compliance. The peak airway pressure of SIMV assist with Autoflow mode is lower than the BAPIP group and show a downward trend.The alveolar compliance are statistically significant difference (P<0.05). and the alveolar compliance changed significantly by the change over time(P<0.05) and showed a upward trend. Conclusion:There is no evident influence of the two mode with blood gas、minutes ventilation amount、tidal volume and airway resistance. Compare to BIPAP,Autoflow assist with SIMV can significant reduce in Ppeak,and improve lung compliance,Therefore SIMV+Autoflow is a proper ventilation mode to choose after deformity treatment of CHD.