A. Stroke Volume Variation (SVV)
SV max - SV min / [(SV max + SV min) / 2]
10~15% Intensive care med 2002;28:392-398.
CSA 측정이 쉽지 않아 잘 사용하지 않음
B. VTI (SVV의 대리지표)
delta VTI = 100 x (VTI max - VTI min) / [(VTI max + VTI min) / 2]
VTI variation > 12% —> fluid responsiveness +
C. Peak flow velocity
delta Vpeak = 100 X (Vp max - Vp min) / [(Vp max + Vp min) / 2]
Vpeak variation > 12% —→ fluid responsiveness
Sensitivity 100%, specificity 89% Chest 2001;119(3) : 867-73
D. Passive leg rasing test
•
Spontaneous breathing 환자에서 사용
•
delta SV PLR > 12% —> fluid responsiveness
•
Vpeak variation : > 12% - fluid responsiveness +
•
VTI variation (SVV의 대리지표) : >12% - fluid responsiveness +
