ĐẶC ĐIỂM LÂM SÀNG VÀ CÁC CHỈ SỐ HUYẾT ĐỘNG ĐO BẰNG ĐIỆN TRỞ SINH HỌC LỒNG NGỰC TRÊN BỆNH NHÂN SỐC NHIỄM KHUẨN ĐƯỢC THỰC HIỆN NGHIỆM PHÁP NÂNG CHÂN THỤ ĐỘNG

Abstract

Objective: To describe the clinical characteristics and hemodynamic parameters measured by thoracic electrical bioimpedance (TEB) in septic shock patients undergoing the passive leg raising (PLR) test. Subjects and Methods: A cross-sectional descriptive study was conducted on 43 patients diagnosed with septic shock who had an indication for thoracic electrical bioimpedance placement to measure hemodynamic parameters during the passive leg raising test at the Intensive Care Center, Bach Mai Hospital, from August 2024 to August 2025. Results: A total of 43 patients met the inclusion criteria; the majority were male (72.1%), and patients aged ≥ 60 years accounted for a high proportion (62.8%). The most common comorbidities were long-term corticosteroid use (10 patients, 23.3%), hypertension (7 patients, 16.3%), and diabetes mellitus (5 patients, 11.6%). After performing the passive leg raising test, heart rate significantly decreased (104 to 97 beats/min, p < 0.05), stroke volume increased (58 to 63 mL, p < 0.05), and corrected flow time (FTc) increased (305 to 312 ms, p < 0.05). Cardiac output, cardiac index, ICON, cardiac power index, systolic time ratio, and pre-ejection period showed no significant changes. Conclusion: Thoracic electrical bioimpedance allows continuous monitoring and timely detection of hemodynamic changes during the passive leg raising test in patients with septic shock.