Effect of Amplatz Sheath on Cystolithotripsy for Women with Large Bladder Stone

Table 1

Patients’ characteristics ( = 18).

	AS group	SP group	value
	10	8
Age (years old)	77.33 (63–91)	75.59 (64–83)	1.00
Stone volume (mL)	25.92 (9.84–99.63)	31.05 (17.43–73.002)	0.637
Stone burden (mm)	43 (36–133)	61 (30–130)	0.637
Number of stones	1 (1–4)	1 (1–4)	0.691
Neurological disease	7	7	0.375
History of febrile UTI	3	2	0.814
Preoperative pyuria	10	8	—

Stone burden: sum of the stones’ maximum diameter; UTI: urinary tract infection.