urology emergency-medicine
Kidney Stone Size vs Spontaneous Passage Rate
Estimates spontaneous stone passage rate based on stone size and location. Guides conservative vs interventional management (SWL, URS, PCNL).
Score interpretation
High chance of spontaneous passage
→ Conservative: analgesia (NSAIDs), hydration; MET with alpha-blocker (tamsulosin); follow-up KUB in 4 weeks
Moderate — consider active removal
→ Shockwave lithotripsy (SWL) for renal/proximal stones; ureteroscopy (URS) for distal; discuss with urology
Low passage rate / Obstruction / Large stone
→ Urgent urology; PCNL for renal stones >20mm; URS for ureteral; decompression if infected (nephrostomy/stent)
Interpretation bands for the Stone Size / Passage. Apply clinical judgement and local guidance.
References
Related
Curated clinical cross-links plus same-class fallbacks.
Drugs
Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.