Imaging Science and Photochemistry ›› 2020, Vol. 38 ›› Issue (5): 811-814.DOI: 10.7517/issn.1674-0475.200208

• Review and Articles • Previous Articles     Next Articles

POCUS Measured of Respiratory Variability Index in Evaluation of the Volume Responsiveness in Mechanical Ventilation Patients with Septic Shock

YAO Xiqing, LI Jiguang, REN Panpan, WANG Yanli   

  1. Department of EICU, The First People's Hospital of Lianyungang, Lianyungang 222061, Jiangsu, P. R. China
  • Received:2020-02-27 Online:2020-09-15 Published:2020-09-15

Abstract: The application value of Point-of-care Ultrasound (POCUS) measured of respiratory variability index (RVI) in evaluation of the volume responsiveness (VR) in mechanical ventilation patients with septic shock (SS) is analyzed in this study. 70 patients with mechanical ventilation and SS were given rehydration test. Patients were divided into responsive (study group) 39 cases and non-responsive (control group) 31 cases according to cardiac index (CI) increased ≥ 15% or <15% after rehydration test. All patients were monitored by POCUS, the maximum diameter of IVC at end-inspiratory (Dmax) and minimum diameter of IVC at end-expiratory (Dmin) were measured before and after rehydration test, and RVI was calculated. After the rehydration test, RVI of the study group was significantly decreased (P<0.05). RVI of the study group was significantly correlation with CI (P<0.05). The AUC, sensitivity and specificity of RVI in predictive the VR of mechanical ventilation patients with SS were 811 higher than those of the Dmax and Dmin (P<0.05). Therefore, the RVI was significantly correlation with VR. POCUS measured of RVI can be used as a noninvasive method in predictive the VR of mechanical ventilation patients with SS.

Key words: septic shock, mechanical ventilation, point-of-care ultrasound, respiratory variability index, volume responsiveness