Abstract P-620: THE EFFICACY OF ULTRASOUND IMAGING FOR THE DIAGNOSIS OF DIAPHRAGM PARALYSIS AFTER PEDIATRIC CARDIAC SURGERY DURING MECHANICAL VENTILATION: RETROSPECTIVE STUDY

Abstract

Aims & Objectives: Ultrasound is one of the useful modalities to diagnose diaphragm paralysis after cardiac surgery in children. However, there is no report about the efficacy of ultrasound imaging for the diagnosis of diaphragm paralysis in mechanical ventilated children after cardiac surgery. The aim of this study is to evaluate the efficacy of ultrasound imaging for the diagnosis of diaphragm paralysis in children underwent cardiac surgery during mechanical ventilation. Methods We reviewed clinical records of children underwent cardiac surgery retrospectively between January 2015 and June 2016. All participants underwent ultrasound imaging to evaluate diaphragmatic movement before and after extubation. We compared the incidence of abnormal diaphragmatic movement before and after extuabtion, and evaluated the efficacy of ultrasound imaging for the diagnosis of diaphragm paralysis during mechanical ventilation. Results 25 patients were eligible: Median age at operation was 4 months (2 months -14 months); Median body weight was 6.9 kg (4.8 kg-10.2 kg). The setting of ventilation when ultrasound was performed is as follows: Median driving pressure is 10 cmH2O (8.8 cmH2O-12 cmH2O); Median PEEP is 5 cmH2O (5 cmH2O-5.3 cmH2O). The abnormal diaphragmatic movements were detected in 9 of 25 patients before extubation and 9 of 25 patients after extubation respectively. All abnormal diaphragmatic movements were detected during mechanical ventilation.All abnormal diaphragmatic movements were detected during mechanical ventilation. Conclusions Ultrasound imaging during mechanical ventilation may be an effective method for the diagnosis of diaphragm paralysis in children underwent cardiac surgery.