the membrane that lines the cavities of the heart and forms part of the heart valves
造句
用作名詞(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. 通過導鞘將導管推入在接受檢測的心內膜區，并在合理的位置上輔以透視和電圖。