Figure 2From: Prediction of fluid challenge effect: filling pressure when left ventricular function is abnormal, diastolic volume when left ventricular function is normalVentricular compliance. When the change in volume/pressure (ΔV/ΔP) is normal, the increase in volume is larger than the increase in pressure when the preload is reduced during hypovolemia. Conversely, when compliance is reduced during hypovolemia, the increase in volume generates a larger change in pressure than in volume. P, pressure; V, volume.Back to article page