Nghiên cứu sự biến đổi áp lực trong bóng cuff ống nội khí quản ở bệnh nhân thở máy tại Khoa Điều trị tích cực, Bệnh viện Quân y 103

Abstract

Objective: To evaluate the change of endotracheal tube cuff pressure (ECP) in ventilated patients. Subject and method: The prospective, interventional study was conducted on 122 adult patients with orotracheal intubation in Intensive Care Unit, 103 Military Hospital. Patients’ ECPs were assessed after intubation and each 2 hour in a neutral starting position during an end-expiratory hold. Measurement of ECP after five changes in head position was performed. The observed ECPs were compared with the basic cuff pressure at the starting position. Result: Endotracheal cuff pressure was in normal range (20 - 30cm H₂O) in 89.3% of cases. Low and high ECP (< 20cm H₂O and > 30cm H₂O) were seen in 1.7% and 9% of patients, respectively. We found that ECP was statistical significantly increased in all five changes of patients’ head or body position but ECP was decreased after endotracheal suction or patients bathing and bed sheet change (p<0.05). Conclusion: 10.7% of patients had abnormal ECP. Changes in patient position significantly increased ECP but endotracheal tube suction or daily patient care decreased ECP (p<0.05). ECP variation was related with position change, nursing care and endotracheal suction.