The doctor checked if there was any blockage in his superior vena cava.

医生检查了他的上腔静脉是否有阻塞。

If the superior vena cava is damaged, blood return will be affected.

如果上腔静脉受损，血液回流会受到影响。

The superior vena cava is an important vessel connecting the heart and the upper body.

上腔静脉是连接心脏和上半身的重要血管。

The function of the superior vena cava is very important to the human circulatory system.

上腔静脉的功能对人体循环系统非常重要。

The superior vena cava is the large vein that carries blood from the upper body back to the heart.

上腔静脉是将血液从上半身带回心脏的大静脉。

Obstruction of superior vena cava

上腔静脉梗阻，

The drawing shows the pulmonary artery, the aorta, and the superior vena cava .

图中显示肺动脉，主动脉和上腔静脉。

The sinoatrial node at the junction of the superior vena cava and the right atrium.

窦房结位于上腔静脉与右心房的交界处.

Objective To evaluate the clinical effect of stereotactic radiotherapy in the treatment of lung cancer with superior vena cava syndrome.

目的评价立体定向放射治疗肺癌合并上腔静脉综合征的临床疗效。

The Ecs were collected from nonthrombotic superior vena cava and iliac veins by enzymolysis and studied by flow cytometer to detect the positive rate of apoptosis.

正常组直接取材。取材标本是未形成血栓的上腔静脉和髂静脉及其酶解下的内皮细胞， 送电镜、流式细胞仪凋亡检查。