percutaneous needle lung biopsy

Treating diseases: lung cancer Indication Percutaneous needle aspiration biopsy is suitable for peripheral nodular, massive and invasive lesions or diffuse lesions around the lung. If the diagnosis is not confirmed by non-invasive examination, percutaneous needle aspiration biopsy may be considered. . Contraindications Bleeding quality (including those who use anticoagulant therapy), suspected vascular disease, severe emphysema, pulmonary bullae, pulmonary hypertension, pulmonary echinococcosis, cardiopulmonary insufficiency, poor general condition or inability to cooperate, For contraindications. Preoperative preparation 1, supplies: Cleaning plate, special fine needle biopsy needle or 12-18 lumbar puncture needle, 20ml syringe, 2% lidocaine, glass plate, ethanol ether fixative and 10% fumarin. 2. Preoperative preparation: (1) Determine the original time and platelet count of prothrombin to determine whether the patient is suitable for surgery; (2) Positive, lateral X-ray and chest CT scan to determine the location and angle of the needle; (3) Oral administration of codeine 30 mg orally, diazepam 10 mg orally or intramuscularly; 45 minutes before surgery; (4) Do a good job of explanation and strive for patient cooperation. Surgical procedure 1. The needle insertion site generally takes the chest wall skin to the nearest point of the lesion as the needle insertion site, but it is necessary to avoid passing through the lung fissure to avoid the occurrence of chest leakage. 2, biopsy method (1) The patient is placed in a supine position. First, the needle insertion site and the needle insertion path are checked under X-ray fluoroscopy, and the marking is performed. (2) routine disinfection of the skin, from the skin to the parietal pleural infiltration anesthesia. (3) Under the X-ray fluoroscopy surveillance, the needle is inserted along the upper edge of the rib. When the needle tip approaches the lesion, the paralyzed patient pauses the breathing and pierces the needle tip into the lesion. (4) Perform positive, oblique, and lateral multi-directional fluoroscopy. After confirming that the needle tip has entered the lesion, withdraw the needle core and connect the 20ml syringe. Pull the syringe to produce continuous negative pressure, and move the needle slightly forward and backward to move and rotate. Use the tip of the needle to pick up the specimen. Finally, the puncture needle is pulled out under continuous negative pressure. (5) Immediately smear, fixed with 95% ethanol and an equal amount of diethyl ether for cytological examination. If there is a small tissue block, it can be fixed for histological examination with 10% formalin solution.