Thoracocentesis (Chest Tap / Pleural Fluid Drainage)

Thoracocentesis—often called a "chest tap"—is an urgent, life-saving procedure performed on pets suffering from severe difficulty breathing (dyspnea). When fluid (effusion) or free air (pneumothorax) builds up in the pleural cavity between the lungs and the chest wall, the lungs are crushed and cannot expand. During a thoracocentesis, the veterinary doctor inserts a small, sterile butterfly needle between the ribs into the chest space, gently suctioning out fluid or air with a syringe and three-way stopcock. Pets often experience immediate, dramatic breathing relief before the needle is even withdrawn.