the membrane that lines the cavities of the heart and forms part of the heart valves
例句
用作名词 (n.)
Advance the catheter through the guiding sheath to the area of the endocardium under evaluation.Use both fluoroscopy and electrograms to aid in proper positioning. 通过导鞘将导管推入在接受检测的心内膜区,并在合理的位置上辅以透视和电图。