医学英语视频NO.15|Directional Coronary Atherectomy定向旋切术

First, a local anesthesia numbs the groin aera.

首先对腹股沟区域进行局麻。

Then the doctor puts a needle into the femoral artery, the artery then runs down the leg.

随后医生用穿刺针穿刺股动脉（该动脉沿大腿部向下走行）。 

The doctor inserts a guide wire through the needle and then removes the needle.

在穿刺针内插入导丝，完毕后撤去穿刺针。

He replaces it with an introducer, a tubular instrument with two ports used to insert flexible devices such as a catheter into a blood vessel.

代之以导引管——具有两个开口的管状工具，用以引导导管等可弯曲设备插入血管。 

Once the introducer is in place, the original guidewire is replaced by a finer wire.

 导引管到位后，用一更细的导丝代替原先的导丝。 

This new wire is used to insert a diagnostic catheter,

该新导丝用于插入诊断导管，

 a long flexible tube, into the artery and guide it to the heart.

一根长长的可弯曲性导管，经动脉引导至心脏。 

 The doctor then removes the second wire.

完成后将该导丝撤出。

With the catheter at the opening of one of the coronary arteries, the doctor injects dye and takes an X-ray.

将导管置于某一冠状动脉开口处，注射造影剂的同时采线。 

If it shows a treatable blockage,

若显示存在可治疗性堵塞，

the doctor uses another guide wire to remove the first catheter and replace it with a guiding catheter.

医生随即使用另一根导丝撤去原先的导管，并以新导引管替代之。 

Then the wire that was used to do this is removed and replaced by a finer wire that is advanced across the blockage.

完成该操作后的导丝被撤出，代之以一更细的导丝，向前行进穿过堵塞处至其远端。

Another catheter designed for lesion cutting is also advanced across the blackage site.

插入另一根用以切除病变组织的导管，也使其前行穿过堵塞部位。

A low-pressure balloon attached next to the cutter, is inflated,exposing lesion material to the cutter.

旋切器边上附有一低压气囊，通过向其内充气使病变组织暴露于旋切器下。

A drive unit is truned on, causing the cutter to spin.

开启驱动装置，使旋切器旋转。

The doctor advances a lever on the drive unit that in turn advances the cutter.

在驱动装置上增加一个传动杆，可带动旋切器向前行进。

The pieces of blockage it cuts away are stored in a section of the catheter

旋切器切除下来的碎片贮存于导管的特定部位

called a nosecone until they are removed at the end of the procedure.

——前锥体中，直至手术结束才会取出。

Rotating the catheter while inflating and deflating the balloon makes it possible to cut the blockage in any direction, leading to uniform debulking.

气囊充气和放气的同时旋转导管可对阻塞斑块进行任意方向的切除，使切除表面均匀压实。

A stent may also be placed.

术中亦可置入支架。

This is a latticed metal scaffold put inside the coronary artery to keep the vessel open.

这是一种置入冠状动脉内以维持血管通畅的网状金属支架。

After the procedure,  the doctor injects dye and takes an X-ray to check for change in the arteries.

手术完成后，医生再次注射造影剂并采线，观察动脉内变化。

Then the catheter is removed and the procedure is over.

最后撤出导管，手术结束。