New suction guide needle designed to reduce the incidence of biopsy-related pneumothorax: experimental evaluation in canine model.

In an attempt to remove air that enters the pleural space during computed tomography (CT)-guided coaxial transthoracic needle biopsy, the authors fashioned an 18-gauge experimental suction guide needle and evaluated the incidence of pneumothorax with this needle in comparison to the incidence of pneumothorax with a standard 18-gauge guide needle in a canine model. This experiment had animal care and use committee approval. Ten dogs underwent a biopsy of each lung, for a total of 20 lung biopsies. Half of the biopsies were performed by using the experimental needle (five right lungs, five left lungs), and half were performed by using a standard guide needle. CT revealed pneumothorax during the procedure and was performed to reveal pneumothorax 1 and 3 hours after the procedure. A significant reduction (P < .016) in intraprocedural lung biopsy-associated pneumothorax was found when the experimental guide needle was used.

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