完全植入式静脉输液港是一种完全植入的血管通道系统，主要由供穿刺的注射座和静脉导管系统组成。它为长期输入化疗药物、输血和血标本采集、长期应用肠外营养、慢性病长期输液的患者提供了安全、方便、美观和长期携带的血管通道。其具有感染风险低、方便患者、减少穿刺血管次数、维护简单、使用期限长等优点。随着完全植入式静脉输液港的不断进步与发展，此项技术被国内众多临床工作者接受并应用。而在临床使用当中，关于输液港的植入方法和途径选择，输液港植入后的用药间隔时间，输液港植入前是否应预防性应用抗生素以及输液港在小儿患者中的应用等问题一直存在争议。本文就《中国恶性肿瘤营养治疗通路专家共识》加以解读，就输液港的植入方式及途径选择、植入后的使用以及围术期处理方式等方面提出建议，对输液港在临床当中的使用加以指导，为恶性肿瘤患者营养治疗通路选择提供最新共识。

Totally implantable venous accessports (TIVAP) is a kind of deep vein infusion device implanted subcutaneously. It mainly includes venous poraccess system and an injection port for puncture. Venous access ports are able to provide safe, convenient, beautiful as well as long-term portable vascular access for those patients suffering from long-term infusion of chemotherapy drugs or parenteral nutrition, also for patients who need chronic transfusion due to chronic diseases. It has the advantages of low risk of infection, convenience for patients, reduction of the number of puncture vessels, simple maintenance and long service life. With the continuous progress and development of TIVAP, this technology has been accepted and applied by many clinical workers in China. However, there have been controversies in several aspects including making decisions of the implantation method and its route of venous access ports, the dosing interval after venous access ports implantation and whether antibiotics are supposed to be applied prophylactically prior to venous access ports implantation. Besides, the application of venous access ports in paediatric patients has triggered some dispute as well. Therefore, this article interprets the Expert Consensus on Nutrition Therapy Pathway for Malignant Tumors in China, and proposes suggestions on the methods of port implantation, post-implantation use and perioperative
management, offering guidance for the application of venous access ports in clinical practice, contributing to making optimal choice in nutritional treatment pathways for patients with malignant tumors according to the latest consensus.