[PS-011]Session: POSTER SESSION 1 | Hall: POSTER ARIA | Date: October 21, 2015 | Hour: 08:00 - 13:00Guy’s Stone Score (GSS) Based on Intravenous Pyelogram Findings Predicting Upper Pole Access Percutaneous Nephrolithotomy (PCNL) OutcomesBannakij Lojanapiwat, Pattara Rod Ong, Pruit KittiratakarnOBJECTIVE: To predict the success rate and complications following percutaneous nephrolithotomy via upper pole by Guy ‘s stone score based on preoperative intravenous pyelogram (IVP). Patients and METHODS: Two hundred twenty-seven renal units which underwent PCNL via upper pole were classified according to GSS by using preoperative intravenous pyelogram finding. The complication was classified according to Clavien classification. The success rate and complication was compared between each GSS. RESULTS: The number of GSS1, GSS2, GSS3 and GSS4 was 14.1%, 15.4%, 30.4% and 40.1%, respectively. The immediate success rate is 87.50% of GSS1, 71.43% of GSS2, 53.62% of GSS3, and 38.46% of GSS4. There was significant different between the groups in stone size, overall immediate success rate, operative time, number of tract access, number of tubeless PCNL. Major complication (Clavein score 3-5) was significant more in higher GSS. Subgroup of patients with supracostal access (n:81), there was significant different in stone size, overall immediate success rate, number of tract access and major complication between the groups. CONCLUSION: GSS based on IVP is a simple and reliable tool in predicting the success rate and complication following upper pole access PCNL. GSS information is very important in clinical judgment and patient counseling. Guy’s Stone Score (GSS) Based on Intravenous Pyelogram Findings Predicting Upper Pole Access Percutaneous Nephrolithotomy (PCNL) OutcomesBannakij Lojanapiwat, Pattara Rod Ong, Pruit KittiratakarnOBJECTIVE: To predict the success rate and complications following percutaneous nephrolithotomy via upper pole by Guy ‘s stone score based on preoperative intravenous pyelogram (IVP). Patients and METHODS: Two hundred twenty-seven renal units which underwent PCNL via upper pole were classified according to GSS by using preoperative intravenous pyelogram finding. The complication was classified according to Clavien classification. The success rate and complication was compared between each GSS. RESULTS: The number of GSS1, GSS2, GSS3 and GSS4 was 14.1%, 15.4%, 30.4% and 40.1%, respectively. The immediate success rate is 87.50% of GSS1, 71.43% of GSS2, 53.62% of GSS3, and 38.46% of GSS4. There was significant different between the groups in stone size, overall immediate success rate, operative time, number of tract access, number of tubeless PCNL. Major complication (Clavein score 3-5) was significant more in higher GSS. Subgroup of patients with supracostal access (n:81), there was significant different in stone size, overall immediate success rate, number of tract access and major complication between the groups. CONCLUSION: GSS based on IVP is a simple and reliable tool in predicting the success rate and complication following upper pole access PCNL. GSS information is very important in clinical judgment and patient counseling. |