Kidney Stone Removal In Singapore

Experiencing the sharp, intense pain of kidney stones can be overwhelming and disruptive to your daily life. Kidney stone removal encompasses various medical procedures designed to eliminate stones from your urinary system when they cannot pass naturally. These treatments range from non-invasive shock wave therapy to minimally invasive surgical procedures, each tailored to specific stone characteristics and patient needs. At our urology centre, we utilise established techniques and modern equipment to provide effective stone removal while prioritising your comfort and recovery.

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Dr. Nor Azhari Bin Mohd Zam

MBBS (NUS)|MRCS (Edin.)|MMed Surgery (NUS)|FAMS (Urology)

kidney stone removal Kidney Stone Removal

What is Kidney Stone Removal?

Kidney stone removal refers to medical procedures that eliminate mineral deposits (calculi) that have formed in the kidneys, ureters, or bladder. These stones develop when minerals and salts in urine crystallise and aggregate, creating hard deposits that can cause severe pain, bleeding, and urinary obstruction. The removal process varies based on stone size, location, composition, and patient factors.

The primary goal of kidney stone removal is to eliminate stones causing symptoms or complications while preserving kidney function. Modern urology offers multiple approaches, from external shock waves that fragment stones into passable pieces to endoscopic procedures that directly remove or break down stones. The choice of technique depends on stone characteristics—stones smaller than 5mm often pass naturally, while larger stones typically require intervention. Each patient’s medical history and anatomy also influence treatment selection, so consultation with a urologist ensures a customised care plan.

Success rates for kidney stone removal vary by procedure and stone type. Shock wave lithotripsy achieves stone-free rates of 60–90% for suitable cases, while ureteroscopy shows success rates exceeding 90% for most ureteral and small to medium kidney stones. These advancements have transformed kidney stone management from major open surgery to minimally invasive outpatient treatments. For safe and effective options, patients can explore kidney stone removal in Singapore, where advanced technologies and experienced specialists are available.

Who is a Suitable Candidate?

Ideal Candidates

Ideal Candidates

  • Patients with stones larger than 5mm unlikely to pass spontaneously
  • Individuals experiencing persistent pain despite medical management
  • Those with stones causing urinary obstruction or infection
  • Patients with recurrent urinary tract infections related to stones
  • Individuals with stones in both kidneys requiring treatment
  • Those with stones composed of materials unlikely to dissolve with medication
  • Patients whose occupation or lifestyle requires complete stone clearance
  • Individuals with solitary kidney requiring prompt stone removal
Contraindications

Contraindications

  • Uncorrected bleeding disorders or coagulopathy
  • Active urinary tract infection requiring treatment first
  • Pregnancy (for certain procedures like ESWL)
  • Severe skeletal deformities preventing proper positioning
  • Morbid obesity exceeding equipment limitations
  • Untreated urinary obstruction below the stone level
  • Severe cardiopulmonary conditions precluding anaesthesia

A thorough evaluation is essential to determine the appropriate treatment approach. This assessment includes imaging studies, urine tests, and blood work to evaluate stone characteristics, kidney function, and overall health status. Dr Azhari will consider these factors alongside your medical history and preferences to recommend the optimal removal technique.

Treatment Techniques & Approaches

  • Extracorporeal Shock Wave Lithotripsy (ESWL)

    ESWL uses focused shock waves generated outside the body to fragment kidney stones into smaller pieces that can pass naturally through urine. This non-invasive technique works well for stones in the kidney and ureter measuring up to 10mm.. The shock waves are precisely targeted using X-ray or ultrasound guidance, typically requiring 2000-4000 shock waves per session. ESWL is performed as an outpatient procedure with sedation or pain relief.

  • Ureteroscopy (URS) and renoscopy (Retrograde intra renal surgery – RIRS) with Laser Lithotripsy

    Ureteroscopy and renoscopy involves passing a thin, flexible scope through the urethra and bladder to directly visualise and treat stones in the ureter or kidney. Once located, a laser fibre is used to fragment the stone into dust or small fragments that can be removed with basket devices. This technique offers direct stone visualisation and immediate removal, making it effective for ureteral stones and smaller kidney stones. Flexible ureterorenoscopes allow access to stones throughout the urinary system.

  • Percutaneous Nephrolithotomy (PCNL)

    PCNL is a minimally invasive procedure for large kidney stones (typically >20mm) or staghorn calculi. A small incision is made in the back to create a direct channel into the kidney. Through this tract, a nephroscope is inserted to visualise and remove stones using various fragmentation devices including ultrasonic, pneumatic, or laser energy. PCNL provides good stone-free rates for large stone burdens and is often completed in a single procedure.

  • Laparoscopic surgery

    Sometimes, in certain cases, key hole surgery may be employed to remove stones as well as correct any underlying anatomical abnormality, such as Pelvi- Ureteric Junction Obstruction (PUJO).

  • Technology & Equipment Used

    Modern kidney stone removal utilises sophisticated equipment including holmium laser systems for precise stone fragmentation, digital flexible ureteroscopes with high-definition imaging, and ultrasonic lithotripters for efficient stone disruption. Fluoroscopy and ultrasound provide real-time imaging guidance during procedures. Stone retrieval devices including baskets and graspers allow controlled stone extraction.

Wondering which approach is right for you?

Dr Azhari will evaluate your specific needs and recommend the most suitable technique.

The Treatment Process

Pre-Treatment Preparation

Before your kidney stone removal procedure, you’ll undergo comprehensive evaluation including CT scanning or ultrasound to determine stone size, location, and density. Blood tests assess kidney function and check for infection or bleeding disorders. Urine culture identifies any bacterial infection requiring pre-treatment antibiotics. You’ll receive specific instructions about fasting—typically no food or drink for 6-8 hours before the procedure. Certain medications like blood thinners may need temporary discontinuation. Arrange transportation home as you cannot drive after sedation or anaesthesia.

During the Procedure

The procedure experience varies by technique. For ESWL, you’ll lie on a treatment table while the lithotripter is positioned against your body. Shock waves create a tapping sensation, with treatment lasting 30-60 minutes. Ureteroscopy begins with cystoscopy to examine the bladder, followed by ureteroscope insertion. Under general or spinal anaesthesia, you won’t feel the procedure. The surgeon visualises the stone on monitors and systematically fragments it with laser energy. PCNL requires general anaesthesia, with positioning face-down for back access. The tract creation and stone removal typically take 1-3 hours depending on stone burden.

Immediate Post-Treatment

Following the procedure, you’ll recover in a monitored area until anaesthesia effects subside. Mild pain or discomfort is managed with appropriate medications. Blood-tinged urine is expected and normal initially. For ureteroscopy and PCNL, a ureteral stent may be placed to ensure drainage while the ureter heals. PCNL patients may have a nephrostomy tube temporarily. Most ESWL and ureteroscopy patients return home the same day, while PCNL typically requires overnight hospitalisation. You’ll receive detailed discharge instructions including activity restrictions, medication schedules, and warning signs to monitor.

Kidney Stone Recovery & Aftercare

First 24-48 Hours

Initial recovery focuses on rest and hydration. Drink at least 2-3 litres daily to flush stone fragments and prevent new stone formation. Mild to moderate pain is common, particularly when passing stone fragments. Use prescribed pain medications as directed. Straining urine through a filter helps collect stone fragments for analysis. Avoid strenuous activities but light walking is encouraged to promote stone passage. Blood in urine may persist but should gradually decrease. Monitor for fever, severe pain, or inability to urinate, which require immediate medical attention.

First Week

Continue high fluid intake to facilitate fragment passage. Return to normal diet unless specific restrictions apply based on stone composition. Gradually increase activity levels but avoid heavy lifting or vigorous exercise. If a stent was placed, you may experience urinary frequency, urgency, or discomfort with urination—these symptoms are normal. Follow-up imaging may be scheduled to assess stone clearance. Most patients return to work within 2-5 days for ESWL or ureteroscopy, though PCNL recovery may require 1-2 weeks. Antibiotics, if prescribed, should be completed entirely.

 

Long-term Recovery

Complete stone clearance may take several weeks, particularly after ESWL. Follow-up imaging at 1-3 months confirms successful treatment. Ureteral stents are typically removed 1-2 weeks post-procedure via simple cystoscopy. Stone analysis guides prevention strategies including dietary modifications and possible medications. Metabolic evaluation may identify underlying causes in recurrent stone formers. Maintain adequate hydration permanently—urine should appear light yellow or clear. Regular follow-up helps monitor for stone recurrence and kidney function.

Our urologists provide comprehensive post-procedure support to ensure optimal recovery.

Schedule your consultation to learn more about what to expect.

Benefits of Kidney Stone Removal

Successful kidney stone removal provides immediate relief from the severe, debilitating pain that often accompanies stone disease. Eliminating obstructing stones restores normal urine flow, reducing infection risk and preserving kidney function. Many patients experience dramatic quality of life improvement, returning to work and activities without fear of sudden stone attacks.

The procedures prevent serious complications associated with untreated stones. Chronic obstruction can lead to permanent kidney damage, while infected stones may cause life-threatening sepsis. Removing stones eliminates these risks while addressing associated symptoms like blood in urine, nausea, and urinary frequency.

Modern minimally invasive techniques offer significant advantages over traditional open surgery. Most procedures are performed as day surgery with rapid recovery. The small or no incisions mean less post-operative pain, minimal scarring, and faster return to normal activities. Stone analysis following removal enables targeted prevention strategies, reducing recurrence risk from 50% to less than 10% in compliant patients.

Risks & Potential Complications

Common Side Effects

Temporary blood in urine occurs in most patients, typically resolving within days to weeks. Mild to moderate pain during stone fragment passage is expected, particularly after ESWL. Bruising at the ESWL treatment site or PCNL incision site is common and resolves naturally. Stent-related symptoms including urinary frequency, urgency, and flank discomfort during urination affect most patients with stents. These symptoms resolve upon stent removal. Temporary kidney function changes may occur but typically normalise quickly.

Rare Complications

Infection requiring antibiotic treatment occurs in less than 5% of cases despite preventive measures. Ureteral injury or perforation is rare with experienced surgeons using modern flexible instruments. Significant bleeding requiring transfusion affects less than 1% of PCNL procedures. Incomplete stone clearance may necessitate repeat treatment in 10-20% of cases depending on stone factors. Adjacent organ injury is rare with image guidance. Ureteral stricture formation is an uncommon late complication.

Risk minimisation involves careful patient selection, appropriate procedure choice, and meticulous surgical technique. Our MOH-accredited urologists employ established protocols including prophylactic antibiotics, precise imaging guidance, and gentle tissue handling to ensure safe, effective treatment.

Kidney Stone Cost Considerations

Kidney stone removal costs vary based on the chosen procedure, stone complexity, and hospitalisation requirements. ESWL typically incurs lower costs as an outpatient procedure, while PCNL involves operating theatre time and an overnight stay. Multiple stones or bilateral procedures increase both complexity and cost.

The total fee usually includes surgeon charges, anaesthesia services, facility usage, and equipment costs. Modern technology such as laser lithotripsy and flexible ureteroscopy requires specialised instruments, which can affect pricing. Post-procedure care, including stent placement and removal, also contributes to the overall expense. Stone analysis and metabolic evaluation, while essential for prevention, may add to total costs.

Choosing an experienced urologist in Singapore ensures quality care and can reduce the likelihood of repeat procedures, offering better long-term value. During consultation, patients receive a detailed cost estimate based on their specific condition and recommended treatment approach.

Frequently Asked Questions

How long does kidney stone removal surgery take to perform?

Procedure duration varies by technique and stone complexity. ESWL typically takes 30-60 minutes of actual treatment time. Ureteroscopy requires 30-90 minutes depending on stone location and size. PCNL procedures usually last 1-3 hours for complete stone removal. These times exclude pre-operative preparation and post-operative recovery. Your urologist will provide a more precise estimate based on your specific stone characteristics during consultation.

Will I need multiple procedures to completely remove my kidney stones?

Many patients achieve complete stone clearance with a single procedure, particularly for uncomplicated stones. Large stones (>2cm), multiple stones, or hard stone compositions may require staged procedures. ESWL has a 60-90% single-session success rate for appropriate stones, while ureteroscopy and renoscopy exceeds 90% success for most cases. PCNL offers good single-procedure clearance rates for large stones. Your urologist will discuss realistic expectations based on your stone characteristics.

How painful is the recovery after kidney stone removal?

Pain levels vary by procedure and individual tolerance. ESWL causes mild to moderate discomfort during fragment passage, managed with oral pain medications. Ureteroscopy patients experience mild pain, though stent-related discomfort is common until removal. PCNL involves more significant initial discomfort due to the access tract, but this improves rapidly with appropriate pain management. Most patients find the post-procedure discomfort far preferable to kidney stone pain. Your medical team will ensure adequate pain control throughout recovery.

When can I return to normal activities after the procedure?

Recovery timelines depend on the procedure performed. ESWL patients typically resume normal activities within 1-2 days, avoiding strenuous exercise for one week. Ureteroscopy allows return to work in 2-5 days, with full activities after stent removal. PCNL requires more recovery time—light activities after one week and complete recovery in 2-4 weeks. Driving is permitted once you’re off strong pain medications and comfortable. Your urologist will provide specific guidelines based on your procedure and occupation.

How can I prevent kidney stones from forming again?

The risk of recurrence is up to 50% within the first 10 years. Therefore, preventive strategies are an important part of Dr Azhari’s comprehensive kidney stone treatment program.
These depend on stone composition revealed through chemical analysis of the stone removed from patient. General measures include maintaining high fluid intake (2.5-3 litres daily), reducing sodium or salt intake, and moderating animal protein consumption. Specific dietary modifications target different stone types—calcium oxalate stones may require oxalate restriction, while uric acid stones benefit from restricting purine intake and urinary alkalinisation. Some patients need preventive medications. Metabolic evaluation identifies correctable risk factors. Regular follow-up ensures early detection and treatment of recurrent stones.

What size kidney stone requires surgical removal?

Stone size influences treatment decisions. Stones smaller than 5mm have a 90% chance of spontaneous passage with medical management. Stones 5-10mm have variable passage rates depending on location—50% for mid-ureter stones versus 10% for upper ureter stones. Stones larger than 10mm rarely pass spontaneously and typically require intervention. Size alone doesn’t determine treatment need—symptoms, stone location, kidney function, and patient factors all influence the decision. Dr Azhari will recommend the optimal treatment based on comprehensive assessment of the patient’s condition.

Are there alternatives to surgical kidney stone removal?

Several conservative options exist for appropriate cases. Medical expulsive therapy using alpha-blockers may facilitate passage of small stones in the ureter. Dissolution therapy works for specific stone types like uric acid stones. Watchful waiting suits asymptomatic small stones in non-critical locations. These approaches aren’t suitable for large stones, obstructing stones, or those causing complications. Some patients try alternative therapies, though scientific evidence is limited. Dr Azhari will discuss all appropriate options, explaining why surgical removal may be necessary for your situation.

Conclusion

Kidney stone removal using modern urological techniques offers effective relief from the pain and complications associated with stone disease. Whether through non-invasive ESWL, precise ureteroscopy or renoscopy, or comprehensive PCNL, these treatments provide high success rates with minimal recovery time. The key to achieving optimal outcomes lies in selecting the most suitable procedure through careful evaluation of the stone’s size, type, and location, along with patient-specific factors. With proper treatment and preventive strategies, most patients can enjoy long-term relief and significantly reduce the risk of recurrence. For those exploring advanced options for kidney stone removal in Singapore, experienced urologists and state-of-the-art facilities are available to deliver safe, effective, and personalised care.

Ready to Take the Next Step?

If you’re considering kidney stone removal, Dr Azhari can help you understand if it’s the right choice for your needs. With considerable experience in kidney stone management, we provide personalised care throughout your journey.

Dr. Nor Azhari Bin Mohd Zam

Dr. Nor Azhari Bin Mohd Zam

MBBS (NUS)|MRCS (Edin.)|MMed Surgery (NUS)|FAMS (Urology)

With more than 15 years experience as a certified Urologist, Dr Nor Azhari specializes in treating a wide range of kidney, bladder and prostate conditions as well as disorders of the male reproductive organs.

He offers minimally invasive treatment options and provides same-day appointments for convenience.

  • Skilled urologist and kidney stone surgeon.
  • Director of Endourology (Urinary stone service) at Singapore General Hospital – 2016 to 2023.
  • Recognized with the College of Surgeons Gold Medal and Singapore Urological Association Book prize.
  • Minimally invasive treatment options available (non-invasive and endoscopic/key-hole techniques).

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    Mount Elizabeth Novena Specialist Centre
    38 Irrawaddy Road
    #08-41 Singapore 329563

    Asian Healthcare Specialists (Alvernia)

    Mount Alvernia Hospital
    820 Thomson Road Medical Centre Block A #05-03 Singapore 574623