Prostate Biopsy Procedure

Biopsy is actually a way for surgical pathology examination. Generally speaking, it is necessary to remove a part of the diseased tissue from the patient's body for testing, so that the type of disease can be confirmed more accurately. Although the biopsy procedures are similar for diseased tissues in different parts, there are also certain differences. So, do you know what the procedures are when performing a prostate biopsy puncture?

Preparation before the test

1. Patients should be evaluated before puncture, and blood should be drawn for routine blood tests and coagulation function tests to understand whether there are abnormal coagulation functions, and to check whether there are symptoms of systemic infection and urinary tract infection in the past week.

2. For patients with hypertension and coronary heart disease, control blood pressure and do electrocardiogram examination.

3. It is recommended that diabetic patients control their blood sugar before and after meals at around 10mmol/L and maintain this level for more than 3 days.

Check steps

1. Transperineal puncture biopsy

The patient adopts lithotomy position, routine perineal disinfection, drape, and intradermal infiltration anesthesia along the center of the perineum. Hold the puncture needle in the right hand and pierce the incision. Insert the left index finger into the rectum and press the part of the prostate tissue to be cut. Guide the puncture needle to reach the lesion site, push the needle core in 3 to 4 cm, and after fixing, push the cannula needle forward to the tip of the needle core to obtain the required prostate specimen. Pull out the puncture needle and continue to press with the left index finger for 2 to 5 minutes to stop bleeding.

2. Transrectal puncture biopsy

Antibiotics should be used one day before surgery. On the morning of the operation, low-position cleansing enema should be performed. The patient should be in lithotomy position. After routine disinfection of the perianal skin and rectal mucosa, the surface of the rectal mucosa should be anesthetized, and the intestinal wall at the puncture site should be disinfected. The needle should be held in the left hand, close to the ventral side of the needle, and the needle should be gently inserted into the rectum to the site of the lesion with the index finger of the left hand. The core of the needle should be pushed in 1.0 to 1.5 cm with the right hand, and the core and tube of the needle should be removed together. After the needle is withdrawn, press the rectal puncture site with the index finger for a few minutes. Antibiotics (such as metronidazole 0.2 to 0.4 g, 3/d) should be used after the operation to prevent infection.