Pain After Kidney Biopsy: Causes and Recovery Tips

Kidney biopsy?

Hello Dr.
Lin, I just had a kidney biopsy this Thursday, and during the 12 hours of lying flat on a sandbag with pressure applied post-procedure, I experienced an unbearable level of soreness.
After getting up 12 hours later, the soreness decreased but persisted subtly for more than half a day.
An ultrasound examination later showed only bruising with no other issues.
Now that I am resting at home, I still feel a pulling sensation in my lower back when sitting in certain positions.
I would like to ask the doctor: 1) Is the soreness experienced while lying flat with pressure due to the position of arching my back on the sandbag, or is it a result of the kidney biopsy itself? 2) Is it normal to still feel discomfort in the form of pulling in the lower back two days after the pressure application process is completed? Thank you!

Ann, 30~39 year old female. Ask Date: 2024/03/24

Dr. Lin Wuxuan reply Internal Medicine

Most patients experience discomfort or pain in the flank area on the side of the kidney biopsy, which usually resolves within a few days.
If there is an increase in pain at the puncture site or the appearance of hematuria, please seek medical attention promptly.
Thank you.

Reply Date: 2024/03/24

More Info

After undergoing a kidney biopsy, it is not uncommon to experience some discomfort or pain in the area. This can be attributed to several factors related to the procedure itself and the body's healing process. Here’s a detailed explanation addressing your concerns:
1. Pain During and After the Procedure: The pain you experienced while lying flat with pressure on the biopsy site can be attributed to a combination of factors. Firstly, the biopsy involves inserting a needle into the kidney to obtain tissue samples, which can cause localized trauma and inflammation. This is a normal part of the procedure and can lead to pain or discomfort in the area. Additionally, the position you were in (lying flat with a sandbag) may have contributed to muscle strain or discomfort, especially if your body was not accustomed to that position for an extended period. The pressure applied is crucial to minimize bleeding, but it can also lead to soreness in the muscles and tissues surrounding the kidney.

2. Post-Procedure Discomfort: It is also normal to experience some residual discomfort or a pulling sensation in the lower back or kidney area for a few days following the biopsy. This can be due to the healing process as your body repairs the tissue that was affected during the procedure. The presence of bruising (hematoma) noted in your ultrasound can also contribute to ongoing discomfort. Bruising can cause inflammation and pressure on surrounding tissues, leading to sensations of tightness or pulling.

3. When to Seek Medical Attention: While some discomfort is expected, you should monitor your symptoms closely. If the pain worsens significantly, if you experience fever, chills, or any signs of infection (such as increased redness or swelling at the biopsy site), or if you notice blood in your urine, it is essential to contact your healthcare provider immediately. These could be signs of complications that require further evaluation.

4. Recovery Tips: To aid in your recovery, consider the following tips:
- Rest: Ensure you are getting adequate rest and avoid strenuous activities for a few days post-procedure.

- Pain Management: Over-the-counter pain relievers, such as acetaminophen or ibuprofen, can help manage discomfort. However, consult your doctor before taking any medication, especially if you have any underlying health conditions or are on other medications.

- Hydration: Staying well-hydrated can help your kidneys function optimally and may assist in the healing process.

- Gentle Movement: While rest is important, gentle movement can also promote circulation and healing. Avoid heavy lifting or strenuous exercise until your doctor gives you the all-clear.

5. Follow-Up Care: Make sure to attend any scheduled follow-up appointments with your healthcare provider. They may want to monitor your recovery and ensure that there are no complications from the biopsy.

In summary, while some discomfort after a kidney biopsy is normal, it is crucial to remain vigilant about your symptoms. If you have any concerns or if your pain persists or worsens, do not hesitate to reach out to your healthcare provider for further evaluation and guidance. Your health and recovery are of utmost importance, and staying informed about your condition will help you navigate the healing process effectively.

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