Abstract
This study aims to explore the convenience and practicality of the method of establishing buttonholes with indwelling trocars. Compared with rope-ladder technique, buttonhole cannulation has better applicability for haemodialysis patients, and the method of buttonhole establishment is particularly important. Prospective, observational and cohort study. We conducted a 12-month observational study on 30 patients who used sharp needles to establish buttonholes and 33 patients who used indwelling trocars to establish buttonholes, and compared the differences between the two groups in the buttonhole formation time, patient-reported cannulation pain, buttonhole success rate, AVF-related infection and patency of AVF. The study adhered to STROBE guidelines. The buttonhole formation time of the indwelling trocar group is less than that of the sharp needle group (5.48±0.51 vs. 23.23±3.07, p<.01). When the buttonhole was used for the first time, the cannulation pain of the indwelling trocar group was less than that of the sharp needle group (4.94±1.50 vs. 6.03±1.13, p=.002), but there was no significant difference in this result after 1month (sharp needle group with 4.50±0.94 vs. indwelling trocar group with 4.12±1.19, p=.169). Compared with all the buttonholes in the indwelling trocar group were established successfully, there were 5 unsuccessful buttonholes in the sharp needle group (p=.02). Three cases of unsuccessful buttonhole patients in the sharp needle group developed AVF-related infection, this result did not appear in the indwelling trocar group (p=.102). The difference in arterial pressure and venous pressure between the two groups was not significant (p=.061, p=.222). Our new method can help buttonhole patients get less track formation time, less cannulation pain, and less fistula infection, thereby bringing them a more comfortable dialysis experience. The new method used in this study not only meets the needs of patients to protect AVF, but also provides convenience for clinical work. In addition, this study analyzed the causes of the AVF infection in buttonhole patients, and provided directions for future research.
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