Non-Contrast Computed Tomography Scan Based Parameters of Ureteric Stones Affecting the Outcome of Extracorporeal Shock Wave Lithotripsy
| Autor: | Mian Khalid Akbar, Muhammad Waqas, Muhammad Waqas Iqbal, Saeed Akhter, Imad-ud-din Saqib, Mohammad Ayaz Khan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
medicine.medical_specialty
Urology medicine.medical_treatment Computed tomography hounsfield unit 03 medical and health sciences 0302 clinical medicine Maximum diameter Hounsfield scale medicine In patient 030212 general & internal medicine ureteric stone Ureteric Stone medicine.diagnostic_test business.industry General Engineering Stent extra corporeal shock wave lithotripsy Extracorporeal shock wave lithotripsy skin to stone distance 030220 oncology & carcinogenesis hounsfield density Radiology business |
| Zdroj: | Cureus |
| ISSN: | 2168-8184 |
| DOI: | 10.7759/cureus.1227 |
| Popis: | Objective To compare the non-contrast computed tomography (NCCT) scan-based parameters of ureteric stones affecting the outcome of extracorporeal shock wave lithotripsy (ESWL). Materials and methods We retrospectively evaluated the pre-procedure NCCT of 74 patients who had ESWL for solitary ureteric calculi of 5-20 mm in diameter. We assessed the age, sex, basal metabolic index (BMI), laterality, location, presence of double 'J' (DJ) stent, skin to stone distance (SSD), stone maximum diameter, Hounsfield unit (HU), Hounsfield density (HD), area, and volume. All those who had no stone on follow-up imaging within 30 days were declared successful while those who had residual stone were declared failures. Results The overall success rate was 78% (58/74). Sixty (81.1%) patients were male. The success of ESWL was correlated with lower SSD, Hounsfield units (HU) and Hounsfield density (HD). However, in multivariate analysis, SSD, Hounsfield unit, and stone area showed correlation with success of procedure but Hounsfield density failed to show correlation. The success rate in patients with stone HU 1000 were 93.9%, 69%, and 58.3%, respectively. Patients with lower BMI (30 kg/m2) and higher HD (>76 HU/mm). Conclusion BMI, SSD, stone Hounsfield units and Hounsfield unit density were strong predictors of outcome of ESWL for ureteric stone. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|