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词汇 Hickman catheter
分类 英语词汇 英语翻译词典
释义

Hickman catheter

英语百科

Hickman line

(重定向自Hickman catheter)
A Hickman line two-lumen catheter inserted on the patient's left side. Scars at the base of the neck indicate the insertion point into the left jugular vein.

A Hickman line is a central venous catheter most often used for the administration of chemotherapy or other medications, as well as for the withdrawal of blood for analysis. Some types are used mainly for the purpose of apheresis or dialysis. Hickman lines may remain in place for extended periods and are used when long-term intravenous access is required. They are inserted under sedation or a general anesthetic by a radiologist or surgeon. The insertion involves two incisions, one at the jugular vein or another nearby vein or groove, and one on the chest wall. At the former incision site (known as the "entrance" site), a tunnel is created from there through to the latter incision site (known as the "exit" site), and the catheter is pushed through this tunnel until it "exits" the latter incision site. The exit site is where the lumens are seen as coming out of the chest wall. The catheter at the entrance site area is then inserted back through the entrance site and advanced into the superior vena cava, preferably near the junction of it and the right atrium of the heart. The entrance site is sutured. The catheter at the exit site is secured by means of a "cuff" just under the skin at the exit site, and the lumens are held down otherwise by a sterile gauze or dressing centered on the exit site, which also serves the purpose of preventing potential contamination at the exit site. Throughout the procedure, ultrasound and X-rays are used to ascertain the positioning of the catheter.

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