Splenic Doppler Resistive Index Variation Mirrors Cardiac Responsiveness and Systemic Hemodynamics upon Fluid Challenge Resuscitation in Postoperative Mechanically Ventilated Patients

Figure 3

A SDRI percent change >9% was representative of fluid responsiveness, with 100% specificity, 100% positive predictive value, 63% sensitivity, and 68% negative predictive value. A SDRI percent change <4% excluded fluid responsiveness, with 100% sensitivity, 100% negative predictive value, 61% specificity, and 77% positive predictive value. None of the fluid challenge responders (R) had a SDRI percent change <4%, and conversely none of the fluid challenge nonresponders (NR) had a SDRI percent change >9%.