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Needle Ablation

Transurethral needle ablation (TUNA) is an outpatient procedure to treat urinary symptoms caused by an enlarged prostate. During TUNA, a specially adapted visual instrument (cystoscope) is inserted through the tip of your penis into the tube that carries urine from your bladder (urethra). Using the cystoscope, your doctor guides a pair of tiny needles into the prostate tissue that is pressing on the urethra. Then radio waves are passed through the needles to create scar tissue. This scarring shrinks prostate tissue, opening up the urinary channel so that urine can flow more easily.

When you get home:


You may return to your normal diet immediately. Because of the raw surface, alcohol, spicy foods and drinks with caffeine, carbonation, etc. may cause some irritation or frequency, and should be used in moderation. To keep your urine flowing freely and to avoid constipation, drink plenty of fluids during the day (8-10 glasses).


Take it easy the day of the procedure. Resume activities as tolerated.


You should resume your pre-surgery medication unless told not to. In addition, you will often be given an antibiotic to prevent infection. These should be taken as prescribed unless you are having an unusual reaction to the antibiotic.

Side Effects:

You may notice some burning or blood in your urine after the treatment. This is to be expected and drinking plenty of water and fluids will help. You may also notice some increased frequency of urination as well as some burning with urination. This is normal and should improve with time.


It is important to keep your bowels regular during the post-operative period. The rectum and the prostate are next to each other and any very large and hard stools that require straining to pass can cause bleeding. A bowel movement every other day is reasonable. Use a mild laxative if needed and call if you are having problems. (Milk of Magnesia or Dulcolax tablets for example).

Problems you should report to us:

  • Fevers over 100.5 Fahrenheit
  • Heavy bleeding or clots (See notes above about blood in your urine)
  • Inability to urinate
  • Drug reactions (Hives, rash, nausea, vomiting, diarrhea)
  • Severe burning or pain with urination that is not improving

Follow Up:

We will schedule a follow up appointment on the day of your procedure. Generally, it is 3-7 days after your procedure.