Comparison of efficacy and complications of PCNL under General and Spinal anesthesia

Background: The aim of this study is Comparison of efficacy, complications and patient satisfaction from percutaneous nephrolithotomy (PCNL) in prone and supine position under spinal anesthesia.
Materials and methods: In this clinical trial 60 patients candidate for PCNL after taking consent form ‚ randomly assigned in two groups. In group 1 PCNL was done in supine position under spinal anesthesia by standard method. In group 2 after changing patients to prone position PCNL was done as first group.


In both groups after operation patients satisfaction from position during operation was checked by Beck scale. Two weeks later patients again visit and efficacy of operation checked by KUB and ultrasonography. All data records and analysed by SPSS software and statistical Tests.
Results: Mean operative time was similar in the two groups (112±24.5 minute in supine and 109±19.7 minute in prone) (p=0.18)
The mean hospital stay in supine position and prone position were 2.44±1.02 and 2.12 ±0.56 days respectively (p>0.05). The patient’s satisfaction was more from operation in supine position (89.7 %in supine and 61.4 in prone position (P=0.018).
There was no significant differences between the supine and prone position in complications (p=0.3). Considering efficacy and success of operation in supine and prone position it was 69% and 58.4% respectively (p=0.195).
Conclusion: PCNL in supine position is a safe procedure and with similar performance compared to standard prone position for treatment of urolithiasis and patient 'satisfaction is more from this position although more studies with larger sample size are necessary
Key word: percutaneous nephrolithotomy‚position‚efficacy‚complications