KHẢO SÁT MỘT SỐ YẾU TỐ LIÊN QUAN ĐẾN CAI THỞ MÁY THẤT BẠI THEO PHƯƠNG THỨC HỖ TRỢ HIỆU CHỈNH THEO TÍN HIỆU THẦN KINH TẠI KHOA HỒI SỨC TÍCH CỰC BỆNH VIỆN BẠCH MAI

Abstract

Objective: Neurally Adjusted Ventilatory Assist (NAVA) is a mode of mechanical weaning in which the level of support is matched to that produced by the ventilator in proportion to the activity diaphragm potential. The objective of the study was to investigate a number of factors related to the failure of mechanical ventilation weaning in a supportive way to modulate neural signals. Subject and method: Prospective interventional study of 33 patients weaned from mechanical ventilation by NAVA at Bach Mai Hospital from October 1, 2015 to October 30, 2017. Result: The failure rate of weaning from mechanical ventilation according to the NAVA method was 39.4%. Diaphragmatic potential was higher in the failure group than in the successful group from hour 1 to hour 72 and the end time (p<0,05). Nerve ventilation performance in the failure group was higher than in the successful group from the 6th to the 48th hour and the end time (p<0,05). The NAVA level in the failure group was higher than in the successful group from the 1st to the 24th hour and the end time (p<0,05).Conclusion: The failure rate when weaning from mechanical ventilation according to NAVA method is 39.4%, factors including muscle voltage, NAVA level, neuroventilation efficiency have an influence on the outcome of NAVA weaning.