Percutaneous Nephrolithrotripsy | Surgery for Kidney Stones | Kidney Stone Treatment in Bangalore | Sakra World Hospital

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Percutaneous Nephrolithotripy

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What is a Percutaneous Nephrolithrotripsy?

To remove stones from the kidney, percutaneous nephrolithotripsy is considered as a minimally invasive procedure by puncturing wounds through the skin. It is a widely used technique to remove stones in the kidney which are more than 2cm in size.

Why percutaneous nephrolithotripsy done?

Percutaneous nephrolithotomy can be done for one following reasons:

Kidney stones that are larger than 2cm in diameter
If larger stones are present in ureter
Infection being the cause of large kidney stones
Restricting the flow of urine from the kidney
Stones which cannot be broken by extracorporeal shock wave lithotripsy
If the person is obese
When other therapies fail

What are the preparations which have to be taken before the surgery?

For the effective clearance of the kidney stones and to make the proper incision, an X-ray image is required which allows easier determination of the relationship between the stones within the kidney and its nearby structures.
Eating and drinking anything for 6 hours is avoided before the surgery.
Medications like blood thinning agents and non-steroidal anti-inflammatory drugs are avoided for 7- 10 days before the treatment
To check whether urine is sterile, a mid-stream urine test is required.
Kidney function studies, urine culture test and complete blood count tests are also done before the treatment
Urine is checked for the signs of infection
To locate stones in the kidney, some of the blood tests and computerized tomography are done.

How is percutaneous nephrolithotomy done?

The operation is generally performed under anesthesia where the entire procedure lasts for 2-3 hours.
The stone in the kidney is located by a retrograde pyelogram which helps in visualizing the ureter and the kidney
With the needle of percutaneous nephrolithotomy, a small 1 centimeter cut is made in the lumbus by passing through the pelvis region of the kidney
Fluoroscopy is used to confirm the position of the needle
Into the pelvis, a guide wire is passed through the needle
With the guide wire still being remained in the pelvis, the needle is withdrawn
Working sheath is introduced by passing the dilators over the guide wire
Small stones which are present are taken out by passing a nephroscope inside the working sheath
Ultrasound probes are used if there is presence of any big stones which needs to be crushed.
Stone fragments are later removed
An antegrade technique is used to create the tract between the kidney and the flank skin by advancing the needle into the kidney from the flank skin.
Alternatively, a retrograde technique is used where a flexible ureteroscope is used to pass a thin wire from inside of the kidney to outside the flank. An advantage of retrograde technique is prevention of the radiation to the patient as well as to the surgeon.

What are the advantages of having percutaneous nephrolithotomy?

Using a minimally invasive procedure, large or complicated kidney stones are treated with relatively small incision.
It has relatively shorter hospital stay post-surgery which might be around 3-4 days.

What precautions need to be taken after the surgery?

Recovery phase which generally lasts for about 2-3 weeks is to be taken easily
Make sure that there is minimal distress from the wound
To prevent infection, oral antibiotics are generally prescribed
Having fevers, chills and bleeding in the urine has to be reported immediately
To ensure that urine correctly drains into the bladder, a urinary stent is left, which will be removed later
Lifting anything heavier, pushing and pulling is to be avoided for at least 2 to 3 weeks after the surgery
An x-ray test is done after 4-6 weeks after the surgery to see if there are any left out kidney stones and also to ensure that urine is draining normally from the kidney

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