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Table 2 Stone characteristics and operative details of PCNL

From: Concerns about stone free rate and procedure events of percutaneous nephrolithotripsy (PCNL) for 2–4 cm kidney stones by standard-PCNL vs mini-PCNL- comparative randomised study

Variables

Mini-PCNL

Standard-PCNL

Number of cases

n = 40

n = 40

Stone size

2–4 cm

2–4 cm

Single Stone/ multi-calyceal

Single stone

Big stone& Multiple calyceal

Patient positioning

Localization method: Triangulation guided with fluoroscopy and pre-op CT

22

18

Supine

40

19

21

Supine

40

Puncture site

Single puncture: lower posterior calyx

Second puncture: middle calyx

38

2

37

3

Nephroscope size

12

28

Stone disintegration equipment:

Holmium Laser & Pneumatic

40

40

Perforation & management

1

Double J

insertion

3

Double J

insertion

Nephrostomy tube insertion

40

40

Intra-operative bleeding

0

1

Operation time -minutes(Mean)

95.0

72.1