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A Renal Biopsy is a medical technique that involves taking a small sample of kidney tissue for analysis under a microscope. To guarantee accurate needle placement, it is usually carried out under local anaesthesia using CT or ultrasound guidance. A pathologist examines tissue samples taken from the kidney by inserting a biopsy needle through the skin. These samples determine the existence and severity of kidney disorders, such as glomerulonephritis, lupus nephritis, and kidney tumours.
Patients may have blood tests performed before the procedure to evaluate kidney and clotting function. Blood thinners may also be temporarily halted to lower the risk of bleeding issues. Patients are often observed for several hours after the biopsy in case of any problems or bleeding.
Consult our nephrologists if you require Renal Biopsy Procedure in Kolkata.
Renal Biopsy is a procedure by which a small piece of the kidney is surgically removed for lab testing. It is used to test for cancer but is also effective in detecting or confirming other forms of kidney disease at Manipal Hospitals. Book today.
A Renal Biopsy is recommended by a nephrologist based on the findings of blood and urine testing. The following are the most frequent causes of Kidney Biopsies. A patient may be suffering for multiple reasons.
Urine containing blood (Haematuria)
Urine-containing protein (known as Proteinuria)
Kidney function issues (if the cause of a gradual or abrupt loss in kidney function is unknown)
The following conditions preclude Renal Biopsy:
Uncontrolled hypertension raises the possibility of bleeding.
Active urinary tract infection, which could result in a post-biopsy systemic infection.
Increased risk of bleeding due to bleeding disorders or anticoagulant therapy.
Patients with single kidneys, where taking a biopsy may compromise renal function.
Excessive weight, which makes it challenging to insert a needle using ultrasonic guidance.
Small, shrunken kidneys, where a Biopsy would not produce a representative sample.
Renal Biopsies come in several forms, such as:
Percutaneous Biopsy: The most popular kind of Renal Biopsy, in which a tissue sample is taken by employing a needle injected beneath the skin into the kidney.
Transjugular Renal Biopsy: This procedure involves inserting a needle into the kidney through the jugular vein in patients who have severe obesity or bleeding issues.
Laparoscopic Renal Biopsy: This is a minimally invasive surgical technique that involves inserting a tiny camera and instruments through small abdominal incisions to harvest kidney tissue.
Open Surgical Renal Biopsy: Infrequently done, this method requires making a surgical incision to directly access the kidney and remove tissue.
To avoid bleeding issues, further tests are performed in case a Kidney Biopsy is recommended.
Those who are already hypertensive should have adequate blood pressure control, ideally below 140/90 mmHg.
Blood tests determine whether the patient's haemoglobin and clotting capabilities are sufficient.
The following tests should be performed: PT-INR, APTT, full blood count, bleeding and clotting time.
Urine tests should be performed to rule out infections.
Use an ultrasound to assess the kidneys' size and position to ensure they are normal.
The patient's medications should be examined to determine whether they use blood thinners such as heparin, aspirin, clopidogrel, warfarin, rivaroxaban, dabigatran, etc.
Seven days before the surgery, blood thinners such as aspirin and clopidogrel should be stopped.
The patient will be conscious and will lie on his abdomen with his back to the roof during the surgery. Patients undergoing renal transplantation lie on their backs during the biopsy procedure. The steps in the Kidney Biopsy technique are as follows:
The location and size of the kidneys are first determined using an ultrasound machine probe, and a Kidney Biopsy needle is then inserted at that place.
Antiseptics are used to clean the skin over the designated point of entry on the back.
To numb the area, a local anaesthetic drug is injected using a syringe and needle at the point of entrance.
A kidney sample is taken by inserting a biopsy needle, a spring-loaded device, using the ultrasound probe as a guide.
While the sample is being collected, the patient is instructed to hold their breath. During this time, the patient may feel pressure or hear a pop or sharp clicking sound.
A biopsy needle may need to be inserted several times to obtain a sufficient sample.
After the procedure is finished, the biopsy site is covered with a bandage.
A Renal Biopsy can yield important information that helps your doctor determine the best course for treating kidney issues.
There is a significant chance of getting infected following the surgery but this doesn't happen often. After your Kidney Biopsy, always be alert for any signs that might indicate an infection. Speak with your physician if you notice:
Have clots of blood or bright red blood in your urine for more than 24 hours following your Biopsy.
Unable to urinate.
Feel colds or fever have redness, swelling, bleeding, or any other discharge coming from the Biopsy site, and feel discomfort at the biopsy site that gets worse.
Dizziness or faint.
Like any invasive surgery, a Renal Biopsy carries the danger of infection and possible internal damage to the targeted organ or surrounding tissues.
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