Results:
There were 139 patients in Group-1 and 43 patients in Group-2. The mean
ages of the patients were 43.9 ± 10.6 and 67.8 ± 2.1 years in Group-1
and Group-2, respectively (p = 0.001). The mean stone size was 899 ± 292
mm2 in Group-1, it was 1,008 ± 208
mm2 in Group-2 (p = 0.736). Patient and stone
characteristics were similar in both group. (Table 1).
When we examined the operative data, we determined that the durations of
operation, nephroscopy and fluoroscopy were similar between the groups
(p = 0.968, p = 0.149, and p = 0.342 respectively). (Table 2).
When we evaluated the postoperative results, we observed that the amount
of hemoglobin drop was statistically higher in Group-1 (p = 0.001).
However, the need for blood transfusion was found to be higher in
Group-2 than in Group-1 (18.6% and 7.2%, respectively). Length of
hospital stay and duration of nephrostomy tube were similar between two
groups (p = 0.855 and p = 0.352, respectively). The stone-free rate was
calculated as 54.7% in Group-1 and 67.4% in Group-2 (p = 0.139).
Concerning the total complication rates, 34.5% of patients in Group-1
and 46.5% of those in Group-2 were observed to develop complications (p
= 0.206). Postoperative complications and related results are shown in
detail in Table 3.
When we examined the subgroups of complications according to the Clavien
scoring system, the rate of minor complications was found to be 22.3%
in Group-1 and 41.9% in Group-2 (p = 0.012). The major complication
rates were determined as 4.7% and 12.2% in Group-1 and Group-2,
respectively (p = 0.155). In addition, the rate of Clavien grade-2
complications was statistically higher in the elderly group (p = 0.019)
( Table 4).