Quantification of Optimal Strength and Frequency of Grip Exercises in Patients After Autogenous Arteriovenous Endovascular Fistula

Introduction. To observe the hemodynamic changes of the upper limb cephalic veins in patients with ESRD who were pre-treated with hemodialysis and required an arteriovenous internal fistula after grip exercise at different grip strengths and frequencies, and to explore the optimal grip exercise strength and frequency to promote blood circulation in the upper limb cephalic veins. Methods. 200 patients aged ≥ 18 years who had undergone internal fistula surgery were selected and divided into 2 groups, 100 patients in each group were divided into groups A and B. Group A determined the appropriate grip strength; group B used an electronic grip strength device to perform grip strength exercise at 4 frequencies of 15, 20, 25, and 30 times/min under the appropriate grip strength determined in group A. The changes in cephalic venous hemodynamics at different frequencies were observed. The hemodynamic changes of the cephalic vein at different frequencies were observed. Results. When the grip strength was 70 to 100% of the maximum grip strength, the cephalic venous blood flow velocity and vascular pressure increased significantly compared to the resting state (P < .01). Conclusions. Grip strength exercise can promote blood circulation in the cephalic veins of the upper limb, with 70 to 100% of the maximum grip strength and 25 exercises/min being the best method. This conclusion can provide a reference basis for clinical guidance on functional exercise of the upper limb and promotion of blood circulation in the cephalic veins of the upper limb and maturation of AVF in patients after AVF surgery.