Why patients choose RIRS
RIRS is the least invasive way to treat a stone that sits inside the kidney. Because the laser fibre dusts the stone into fine particles that wash out with urine, there is no wound to heal. It is also the safest option for patients on blood thinners, patients with a single kidney, and those with bleeding disorders, where a puncture through kidney tissue carries more risk.
- No incision, no puncture, no external scar
- Day-care or one-night stay for most patients
- Safe in patients on anticoagulants
- Works well for lower pole stones a scope can angle into
- Both kidneys can sometimes be addressed in the same anaesthesia
Stone size matters
RIRS is at its best under 1.5 cm. Above 2 cm, dusting a stone through a flexible scope takes a long time and leaves fragments behind, so PCNL or mini PCNL gives a cleaner result. A pre-stenting for one to two weeks is occasionally needed first, to passively widen a tight ureter so the access sheath goes up safely.
After RIRS
Expect some burning and a pink tinge in the urine for a couple of days, and stent-related urgency if a DJ stent was placed. Drink enough to keep the urine pale. Most people are back at work in two to three days. A follow-up ultrasound at four weeks confirms clearance before the stent is removed.
RIRS (Retrograde Intrarenal Surgery) — common questions
Is RIRS painful?
Not during the procedure — it is done under anaesthesia. Afterwards, discomfort is mild and is mostly caused by the DJ stent rather than by the stone treatment itself.
How long does a RIRS procedure take?
Usually 45 to 75 minutes, depending on stone size and hardness. Discharge is often the same evening or the next morning.
RIRS or PCNL — which is better for me?
Size and position decide. Stones under about 1.5 cm inside the kidney do well with RIRS; larger, harder or staghorn stones clear faster and more completely with PCNL. Your CT report answers this, not a general rule.
Can RIRS be done if I have a stent already?
Yes. In fact a stent placed earlier makes the ureter more accommodating, which often makes the RIRS easier and safer.
Reviewed by Dr. Kinjal Banerjee, MBBS, MS (General Surgery), DNB (Urology) — Urologist, Renal Transplant & Robotic Surgeon, Faridabad. This page explains rirs (retrograde intrarenal surgery) in general terms; your own treatment plan depends on your reports and examination.