Percutaneous Nephrolithonomy (PCNL) Surgery in Nigeria

Introduction

Percutaneous nephrolithotomy (PCNL) is a minimally invasive surgical procedure used to remove kidney stones that are too large to pass spontaneously or which are not appropriate for other treatment options. PCNL has become a core surgical procedure in Nigeria, where kidney stone cases increase daily as a result of dehydration, dietary concerns, and hereditary conditions. This article explores the nuances of PCNL surgery, its diagnosis, alternatives, implications, post-recovery process, and FAQs, offering an exhaustive insight into this life-saving medical procedure in the Nigerian context.

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What is Percutaneous Nephrolithotomy (PCNL) Surgery?

Percutaneous nephrolithotomy (PCNL) is a surgery that breaks up and extracts large or complex kidney stones using a small incision in the skin. It utilizes a nephroscope, an instrument utilized by the surgeon to visualize and take out the stones from the kidney. PCNL is most frequently performed under general anesthesia and is the gold standard for the removal of large kidney stones, particularly those greater than 2 cm in diameter or lower pole stones.

The procedure begins with the placement of a needle through the skin into the kidney and then the creation of a tract through which entry into the kidney is achieved. A nephroscope is advanced through the tract, and the stones are either removed intact or pulverized into fragments using laser or ultrasonic energy. The fragments are evacuated, and a stent may be placed to allow drainage of urine from the kidney.

PCNL is a highly successful procedure with an 80% to 95% success rate, varying with the size and location of the stones. The procedure is becoming increasingly popular in Nigeria, with more widespread use in big hospitals and specialist urology units, offering patients a good alternative for managing complicated kidney stones.

Diagnosis of Percutaneous Nephrolithotomy (PCNL) Surgery

The diagnosis of kidney stones that would require PCNL surgery is typically started with a thorough medical history and physical examination. The patients typically present with symptoms and signs such as severe pain in the flank, hematuria (blood in urine), nausea, vomiting, and urinary tract infection. Some of the patients are asymptomatic, and stones are incidentally detected on imaging studies for other illnesses.

Imaging is essential in the diagnosis and planning of PCNL surgery. The most frequently employed imaging modalities are:

1.    Ultrasound: A non-invasive imaging procedure that is generally the first step in the diagnosis of kidney stones. It can assess whether there are stones and how much hydronephrosis (swelling of the kidney due to urine backup) exists.

2.    Computed Tomography (CT) Scan: A non-contrast pelvic and abdominal CT is the imaging technique of choice in the diagnosis of kidney stones. It can depict detailed information concerning the size, location, and density of stones, along with the urinary tract anatomy.

3.    Intravenous Pyelogram (IVP): This radiographic procedure is performed by administering a contrast medium into the vein, which the kidneys filter. X-rays are intermittently obtained to demonstrate the urinary tract and identify any obstruction caused by stones.

4.    Magnetic Resonance Imaging (MRI): Although not employed as often for kidney stones, MRI is used in specific circumstances, like in pregnancy or patients with contraindications to CT scanning.

Once the diagnosis is confirmed, the urologist will also assess the general health of the patient, the efficiency of the kidneys, and the nature of the stone to determine if PCNL is the best course of treatment. Book a session now! WhatsApp | Phone Call | Email

Alternatives to Percutaneous Nephrolithotomy (PCNL) Surgery

While PCNL works best in the case of large or complex kidney stones, it is not the only option. It depends on a number of factors that the treatment be selected, which are the size, location, and nature of the stones, along with the overall health of the patient and personal preferences. The options for PCNL are as follows:

1.    Extracorporeal Shock Wave Lithotripsy (ESWL): ESWL is minimally invasive therapy where kidney stones are shattered under the impact of shock waves. They pass away from the urinary system by themselves. ESWL is ideal for small-sized stones up to 2 cm in size, which are localised in the upper urinary tract but may not be effective if the stones are very hard or located in the lower pole of the kidney.

2.    Ureteroscopy (URS): Minimally invasive procedure with a ureteroscope being inserted through the urethra and bladder into the kidney or ureter. Laser energy is used to break down the stone and is removed using a basket. URS is particular in application to stones of the ureter or lower calix of the kidney.

3.    Open Surgery: In rare cases, open surgery may be done to remove very large or complex stones that cannot be removed through minimally invasive procedures. Open surgery, however, carries a greater risk of complications and a longer recovery time than PCNL.

4.    Medical Expulsive Therapy (MET): For small stones with a high likelihood of spontaneous passage, medications such as alpha-blockers may be given to induce relaxation of the ureteral smooth muscle and facilitate stone expulsion. MET may be added to increased hydration and analgesia.

5.    Changes in Lifestyle and Diet: In some cases, dietary and lifestyle change can stop the formation of new stones. Some of these are increased fluid consumption, reduction in salt and protein intake, and exclusion of high-oxalate foods.

The mode of treatment should be decided in consultation with a urologist depending on the specific nature of the stones and the overall health of the patient.

Consequences of Percutaneous Nephrolithotomy (PCNL) Surgery

Like with any kind of surgery, PCNL does come with risks and potential complications. While the treatment is safe and useful, patients must be made aware of the resultant outcomes, which can be:

1.    Bleeding: PCNL is associated with the creation of a tract in the kidney, which is capable of inducing bleeding. Most of the times, the bleeding is minimal and is managed conservatively. However, at other times, significant bleeding will require blood transfusion or other interventions.

2.    Infection: The use of instruments in the urinary tract may raise the risk of infection. Patients can acquire urinary tract infections (UTIs) or, in worse-case scenarios, sepsis. Prophylactic antibiotics are normally given to prevent infection.

3.    Damage to Adjacent Organs: While rare, there exists a risk of injury to adjacent organs, such as the liver, spleen, or intestines, with percutaneous tract development. Proper technique and imaging must be employed to prevent this.

4.    Residual Stones: In other cases, however, all fragments of stones are not passed in the first sitting, which will require additional procedures. Residual stones also risk leading to the recurrent formation of stones.

5.    Leak of urine: Transient renal urine leak to the adjacent tissue may occur after PCNL. It is generally self-limited and resolves by itself over a period but requires drainage in certain cases.

6.    Pain and Discomfort: Post-procedure pain and discomfort at the site of incision and in the flank area may be experienced. Pain management is an essential aspect of post-operative care.

7.    Need for Further Procedures: Occasionally, a second procedure will be necessary to clear retained stones or to treat complications such as infection or bleeding.

Though such potential dangers do exist, PCNL in general is very safe and very successful treatment for large and complex kidney stones with an excellent success rate and comparatively minor complications if done by experienced surgeons. Contact us via WhatsApp | Phone Call | Email

Post-Recovery Process of Percutaneous Nephrolithotomy (PCNL) Surgery

The recovery process after PCNL surgery is also important in guaranteeing a successful outcome and reducing the possibility of complications. The duration of the recovery process will depend on the nature of the procedure and the overall health of the patient, but most patients can expect the following:

1.    Hospital Stay: Most patients will need to stay in the hospital for 1 to 3 days following PCNL surgery. Here, they will be monitored for any sign of complications, such as bleeding and infection. Pain medication and antibiotics will be administered as needed.

2.    Drainage Tube: The physician may place a nephrostomy tube or ureteral stent during the surgery for the adequate drainage of urine from the kidney. The tube or stent would normally be removed within a few days to weeks, depending on the patient's recovery.

3.    Pain Management: Pain and discomfort are normal after PCNL surgery, particularly at the site of incision and across the flank. Pain medication, including non-steroidal anti-inflammatory drugs (NSAIDs) and opioids, may be administered to manage pain after surgery.

4.    Activity Limitations: The patients must not engage in strenuous activity, heavy lifting, or excessive exercise within 2 to 4 weeks of PCNL surgery. It is advised that they should take light walking for improving healing and preventing blood clots.

5.    Follow-Up Appointments: The patient has to visit the urologist frequently to monitor the healing and the success of the operation. Imaging tests, such as ultrasound or CT scans, may be performed to verify that all stone fragments were eliminated and that no stones are still present.

6.    Hydration: Fluid consumption must be boosted to help eliminate any remaining pieces of stone and also to prevent formation of new stones. Consuming plenty of water and also maintaining hydration should be practiced.

7.    Dietary Modifications: Depending on the composition of the stones, dietary changes may be recommended to reduce the risk of recurrence of stone formation. This can include reducing salt, protein, and oxalate intake, and increasing fruit and vegetable consumption.

8.    Monitoring for Complications: Patients should monitor for any signs of complications, such as fever, chills, pain, or hematuria, and immediately report them to their physician if they experience any of these.

With proper post-operative care and monitoring, the patients can expect to recover fully and have their symptoms relieved after PCNL surgery.

Conclusion

Percutaneous nephrolithotomy (PCNL) is a highly successful surgical procedure for the removal of large or complicated kidney stones. In Nigeria, where there is an increase in the prevalence of kidney stones, PCNL offers a satisfactory alternative for patients who may not be candidates for other procedures. Despite the risk of the procedure, the benefits often outweigh the complications, provided that it is performed by experienced surgeons in good-equipped hospitals.

Diagnosis of kidney stones that are treatable with PCNL involves physical examination, medical history, and imaging studies. ESWL and ureteroscopy, as alternatives to PCNL, are determined according to the character of the stones as well as the overall patient condition. The recovery after care is essential to the success of the procedure, and patients are advised on managing pain best, following activity restriction, and altering diet based on their urologist's advice.

As urology advances, PCNL stands to become more accessible and efficient, a silver bullet for patients with kidney stones in Nigeria and the rest of the world.

FAQs about Percutaneous Nephrolithotomy (PCNL) Surgery

1.    What is the success rate of PCNL surgery?

The success rate of PCNL surgery is typically high, ranging from 80% to 95%, based on the size and location of the stones. In most cases, the procedure is successful in removing the stones and alleviating symptoms.

2.    How long does recovery from PCNL surgery take?

The time to recover from PCNL surgery depends, and most patients are normal in 2 to 4 weeks. Full recovery could take slightly longer based on the complexity of the surgery and patient health.

3.    Is there a dietary restriction placed after PCNL surgery?

Dietary restriction can be recommended depending on the type of stones. Intake of fluids is typically augmented, salt and protein consumption is reduced, and food with high oxalate concentration is excluded in order to prevent recurrence of stone formation.

4.    Will kidney stones recur after PCNL surgery?

Yes, kidney stones can recur after PCNL surgery if the underlying causes of the stones, such as dehydration or diet, are not addressed. Regular follow-up with a urologist and adherence to dietary and lifestyle recommendations can avoid recurrence.

5.    Is PCNL surgery painful?

PCNL operation is performed with general anesthesia and thus patients won't experience any pain during surgery. However, certain pain and discomfort are routine in the healing process, and pain medications will often be recommended to manage these.

6.    How long will I be required to remain in the hospital after PCNL surgery?

Most patients will need to stay in the hospital for 1 to 3 days following PCNL surgery. The length of the hospital stay depends on the complexity of the procedure and on the patient's recovery.

7.    What are the complications of PCNL surgery?

The complications of PCNL surgery include bleeding, infection, injury to adjacent organs, stone residua, urine leak, and the need for additional procedures. But these complications are less likely to occur when the procedure is performed by experienced surgeons.

8.    Can PCNL surgery be performed in children?

Yes, children can undergo PCNL surgery, although less so. The operation is generally reserved for cases when other treatments, such as ESWL or ureteroscopy, are not possible.

9.    How do I prepare for PCNL surgery?

Preparation for PCNL surgery may include a pre-op evaluation, imaging studies, and lab tests. Patients are typically instructed to fast for several hours before the procedure and to inform their surgeon about any medications taken.

10. What can I expect during recovery?

Post-operative recovery involves some pain and discomfort, especially at the site of incision and in the flank region. Pain medication, restriction of activity, and increased fluid intake are all critical components of post-operative management. Follow-up visits with the urologist on a regular basis are also necessary to check on recovery and evaluate the success of the procedure. WhatsApp | Phone Call | Email

References

Cleveland Clinics https://my.clevelandclinic.org/health/treatments/17349-percutaneous-nephrolithotomy

Mayo Clinics https://www.mayoclinic.org/tests-procedures/percutaneous-nephrolithotomy/about/pac-20385051

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