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1. Communicating with the anesthesiologist to ensure adequately sedated and relaxed to reduce coughing. 2. Performing extra endotracheal mucosal anesthesia. 3. Suspending mechanical ventilation while trachea ring is incised. 4. Restoring mechanical ventilation until forming a closed circuit. 5. Using enclosed straws equipment instead of ordinary straws. 6. Attaching a filter to provide additional protection.
