Diagnostic MicroPCNL Seeing through the needle to ensure that it is the right calyx with VueOptic® скачать в хорошем качестве

Diagnostic MicroPCNL Seeing through the needle to ensure that it is the right calyx with VueOptic®

A 64-years-old patient with complex left renal stones. The lower calyx is dilated with multiple small stones that are not visible in fluoroscopy. Upper calyx access and the pelvic stones are removed. It is impossible to access the lower calyx; the infundibulum is completely closed. A blind direct percutaneous access is performed, by aiming toward the area below the middle calyx. Since the small stones are not visible in fluoroscopy, it is not certain that it is the right calyx. Equipment We used the 3 Fr VueOptic that is the visualization source fiber of the disposable flexible ureteroscope Flexor® Vue™, Cook Medical 16 Gauge needle: 16 G = 1.626 mm VueOptic 3 Fr = 0.99 mm Laser fiber 273µm = 0.273 mm 0.99 + 0.273 = 1.263 1.626 – (0.99 + 0.273) = 0.363 mm for irrigation The 18-Gauge puncture needle is changed with the 16-Gauge needle over a Teflon-guidewire Postoperative nephrostography