Boni Irawan, Dhirajaya Dharmakadar, Syah Mirsya Warli


INTRODUCTION: Percutaneous Nephrolithotomy (PCNL) is one of the minimally invasive actions in the field of urology aimed at
removing kidney stones using percutaneous access to reach the pelviocalises system. One of the simplest and applicative scoring
systems as a predictor of the free number of stones in the PCNL procedure is Guy's Stone Score. The purpose of this research is to
know the relationship of Guy's Stone Score and stone free number after PCNL procedure at Adam Malik Hospital Medan.
METHODS: This research is an analytical study with prospective design. During the period of October 2016 to April 2017, 34
patients with kidney stones were found in the PCNL procedure aged> 18 years, with stone size> 20 mm were included in this
study but patients who had already done ESWL or endourology were excluded from this study.
RESULTS: Mean age of patient was 51.02 ± 10.4 years with number of men and women were 18 and 16 respectively (52.9% and
47.1%), mean BMI 23.3 ± 2.9 with overweight body mass index of 17 (50%) patients. Total stones was dominated by the
radiopaque rock group in 32 patients (94.1%) and treatment success with stone free rate parameters in 27 (79.4%) patients. Of
the 34 patients, Guy Stone Score 4 was the largest proportion in 13 (38.2%) patients and Guy Stone Score 1 was the lowest in 6
patients (17.6%). Average patient age from Guys Stone Score 1,2,3,4 were 50.5 ± 10.2, 48.1 ± 9.7, 47 ± 8.8, 55.2 ± 11.3. The
radiopaque stone description dominates Guy Stone's Score population of 1 to 4 in 100%, 75%, 100%, and 100%. The result of
stone free rate on Guys Stone Score 1-4 is 100%, 87.5%, 71.4%, and 69.2% respectively, with p-Value 0.102 in which there was
no statistically significant relationship between GSS grading and stone free rate.
CONCLUSION: There is a relationship between GSS with stone free number (r=1.0 and p = 0,000).


Guy's Stone Score, GSS, PCNL, Stone free rate.

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