3D Real-Time Echocardiography Combined with Mini Pressure Wire Generate Reliable Pressure-Volume Loops in Small Hearts
Fig 1
Principle of Pressure-Volume Relations derived from 3D real-time echocardiography and mini pressure wire.
Volume-time curves calculated from 3DE-data (a) and pressure-time curves derived from mini-pressure wire (b) are synchronized and used to compute pressure-volume loops (c). Endsystolic elastance (Ees) and indexed enddiastolic volume at an enddiastolic pressure of 10 mmHg (EDV10) were estimated from a single-beat approach [19,20].