Shock wave lithotripsy for ureteral stones in elderly male patients

Figures & data

Table I.  Clinical data.

Overlying disorders	Group 1	Group 2	p value
Number	23	215
Age	74 ± 3.6	45 ± 12
Urinary disorders	9 (39%)	3 (1.38%)	0.00001
Musculo-skeletal disorder.	3 (13%)	3 (1.39%)	0.013
Cardiac conductive disease	2 (8.7%)	0 (0%)	0.009
Cardiac ischemic disease	9 (39%)	11 (5.1%)	0.00013
Hypertension	7 (30.4%)	19 (8.8%)	0.006

Table II.  Stone data.

Parameter	Group 1	Group 2	p value
Number	23	215
Age	74 ± 3.6	45 ± 12
Stone side
Right	9 (39%)	98 (45%)	0.66
Left	14 (61%)	117 (55%)	0.66
Stone position
Upper ureter	13 (56.5%)	48 (22%)	0.0008
Mid ureter	6 (26%)	39 (18%)	0.4
Lower ureter	4 (17.5%)	128 (60%)	0.0001
Stone opacity
Opaque	21 (91%)	201 (93%)	0.65
Lucent	2 (9%)	14 (7%)	0.65
Pre SWL drainage	14 (60%)	145 (67%)	0.6
Internal stent	10 (71%)	112 (77%)	0.5
PCN	4 (29%)	33 (23%)	0.7
Average stone size (mm)	11 × 8	10 × 8	0.43
Range	(5–20) × (5–18)	(3–22) × (2–20)
% stones > 10 × 10 mm	34.8%	29%	0.63
Overall stone free rate	91%	91%	0.5
Complications	2 (1%)	8 (3.7%)	0.25

Figure 1. (A) Patient strapped to the flexible stretcher prior to positioning inside the HM3 water bath. (B) Physically demanding flexing and twisting positioning for the treatment of left ureteral calculi in order to open a clear path for shock waves.