| 摘要 |
The invention relates to an apparatus for monitoring hemodynamic performance of a cardiac chamber. In one embodiment, the apparatus takes real time measurements of the volume and pressure of the cardiac chamber and prepares a PV loop. The apparatus may include an intracardiac echocardiogram catheter with a pressure sensor positioned to measure intracardiac pressure when the distal end of the catheter is deployed in a cardiac chamber. The apparatus may further include control circuitry that receives heart wall surface image data signals from the ultrasound transducer and intracardiac pressure data signals from the pressure senor and generates pressure-volume loop data signals from the surface image data signals and intracardiac pressure data signals in real time. |
