Department of Oncology, Beijing Shijingshan Hospital, Capital Medical University, Beijing, China.
Department of Orthopedics, Beijing Shijingshan Hospital, Capital Medical University, Beijing, China.
Technol Health Care. 2022;30(4):851-857. doi: 10.3233/THC-213361.
Catheter jamming is an emerging and possibly underrated complication.
To find the criteria for determining if the catheter cannot be removed through the mechanical analysis of fracture tension and fracture strain (εf) of Peripheral Inserted Central Catheters (PICC).
We removed 30 pieces of PICC catheters from patients and recorded the indwelling time. Those with an indwelling time shorter than 12 weeks belonged to the short-term group. Those with an indwelling time longer than 12 weeks belonged to the long-term group. The first half of the same catheter is section A, and the second half is section B. The fraction tension and fracture strain of the catheter were measured, and statistical analysis was conducted.
The fracture tension of catheter in sections A and B were 5.8917 ± 1.0095 and 6.0670 ± 0.8066 Newtons respectively (p= 0.393) and the fracture strain of catheter in sections A and B were 6.0611 ± 1.0810 and 6.2543 ± 0.7187 Newtons respectively (p= 0.343). The fracture tension of catheter in short-term and long-term group were 6.0696 ± 0.9414 and 5.9192 ± 0.8972 Newtons respectively (p= 0.535) and the fracture strain of catheter in short-term and long-term group were 6.0067 ± 0.7227 and 6.2584 ± 1.0212 respectively (p= 0.301).
It is objective and consistent to take the catheter fracture tension as the standard. This standard would be able to accurately define the concept of catheter failure and reduce the risk of catheter fracture and the misdiagnosis of catheter failure. The catheter fracture tension and fracture strain was not affected by the catheter indwelling time. It is recommended to set the tensile force as 5 Newtons and carry it out at a speed of 100 mm/min for the catheter drawing of the PICC single-lumen silicone catheter (4.0F) from Budd Company.
导管嵌顿是一种新兴的、可能被低估的并发症。
通过对经外周静脉置入中心静脉导管（PICC）的断裂张力和断裂应变（εf）进行力学分析，确定导管无法拔出的标准。
我们从患者体内取出 30 根 PICC 导管，并记录留置时间。留置时间小于 12 周的属于短期组，留置时间大于 12 周的属于长期组。同一导管的前半部分为 A 段，后半部分为 B 段。测量导管的断裂张力和断裂应变，并进行统计学分析。
A、B 两段导管的断裂张力分别为 5.8917 ± 1.0095 和 6.0670 ± 0.8066 牛顿（p=0.393），A、B 两段导管的断裂应变分别为 6.0611 ± 1.0810 和 6.2543 ± 0.7187 牛顿（p=0.343）。短期组和长期组导管的断裂张力分别为 6.0696 ± 0.9414 和 5.9192 ± 0.8972 牛顿（p=0.535），短期组和长期组导管的断裂应变分别为 6.0067 ± 0.7227 和 6.2584 ± 1.0212 牛顿（p=0.301）。
以导管断裂张力为标准具有客观性和一致性，能够准确界定导管失效概念，降低导管断裂和导管失效误诊风险。导管的断裂张力和断裂应变不受导管留置时间的影响。建议设定拉伸力为 5 牛顿，以 100mm/min 的速度对 Budd 公司生产的 4.0F 单腔硅酮 PICC 导管进行导管拔出。
