Predictive risk factors for pain during extracorporeal shockwave lithotripsy.
2009
Abstract Purpose: Extracorporeal shockwave lithotripsy (SWL) is a noninvasive but painful procedure. The aim of this study was to identify predictive risk factors for pain during SWL. Patients and Methods: Two hundred twenty-two SWL treatments with the Lithostar lithotripter (Siemens) were included in a monocentric study. Patient and stone characteristics were prospectively collected in a database, and a standardized pain control protocol was administered 1 hour before treatment: paracetamol, nefopam, ketoprofen, and alprazolam. Subjective pain level was assessed with visual analog scale (VAS, 0–10). If VAS was ≥3, tramadol was added. If VAS was still ≥3, shockwave intensity was decreased or treatment was interrupted. The efficacy on stone fragmentation was evaluated 1 month after treatment. The need for adjuvant analgesia was compared with patient and stone characteristics to find out predictive risk factors for pain. Results: The average subjective pain was 3.1. The need for supplementary analgesia was ...
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