Thoracentesis VIDEO Thoracentesis Using Ultrasonographic Guidance VIDEO Aftercare for Thoracentesis Sometimes imaging (usually chest x-ray or ultrasonography) to exclude pneumothorax Analgesia with oral nonsteroidal anti-inflammatory drugs (NSAIDs) or acetaminophen if needed Advise patients to report any shortness of breath or chest pain; coughing is common after fluid removal and not a cause for concern.