关键词: 握球时间, 经外周穿刺中心静脉导管, 导管插入术, 中心静脉

Abstract:

Objective To investigate the effects of continuous ball holding on hemodynamics of upper limb axillary vein in cancer patients with PICCs, to provide scientific basis for ball holding exercise.Methods Eighty-five cancer patients after PICC catheterization were randomly selected from oncology department at a tertiary hospital in Beijing. Using before-after study design, we recorded the changes of venous vessel diameter, blood flow velocity and blood pressure with different ball holding duration under ultrasonic monitoring.Results In the resting state, the diameter of venous vessel was（3.98±0.66） mm, the peak velocity of blood flow was（13.49±4.92） cm/s, and the pressure of blood vessels was（0.06±0.04） mmHg. Compared with the resting state, the duration of ball holding had statistically significant impact on diameter, peak velocity and pressure of venous vessels（P<0.05）, which were all higher than the resting state. The diameter of the blood vessel was the largest when holding for 1s and releasing for 1s（4.36±0.68） mm, the maximum blood flow velocity（23.17±7.09） cm/s and the maximum blood pressure （0.17±0.13） mmHg occurred when holding for 2s and releasing for 2s.Conclusion Ball holding exercises can effectively enlarge the diameter of vein, increase blood flow velocity and muscle pressure on the vascular wall. We can guide cancer patients with PICCs to exercise according to the method of holding for 2s and releasing for 2s. The method is simple and feasible, and does not cause discomfort to the patients, which can be widely used in clinical practice.

Key words: Holding Duration, Peripherally Inserted Central Catheter, Catheterization, Central Venous