7.11
気管切開 IV: 抜管
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Q1: What does tracheostomy decannulation mean?
Tracheostomy decannulation is the permanent removal of the tracheostomy tube, indicating that the condition requiring the tracheostomy has resolved. The patient must be able to maintain proper gas exchange, clear secretions independently, and remain hemodynamically stable before decannulation can occur safely.
Q2: What assessments must be completed before removing a tracheostomy tube?
Before decannulation, a thorough airway assessment is critical, including visual evaluation of the oropharyngeal, hypopharyngeal, laryngeal, and tracheal airway. A trial period with the tube corked helps ensure the patient can maintain adequate gas exchange and clear secretions independently before permanent removal.
Q3: What are the initial steps in performing tracheostomy decannulation?
Begin with thorough hand-washing and donning gloves. Explain the procedure to the patient and monitor vital signs. Suction the tracheostomy to clear tracheal secretions, then loosen the tracheostomy tapes and remove any visible sutures securing the tube before deflating the cuff.
Q4: How is the tracheostomy tube safely removed?
Deflate the tracheostomy cuff completely, then gently pull the tube outward in one smooth motion. Any resistance should prompt immediate cessation of the procedure. After removal, apply a sterile occlusive dressing to the site and monitor closely for bleeding or respiratory distress.
Q5: What post-decannulation care and monitoring are required?
After tube removal, monitor respiratory status and oxygen saturation for signs of breathing difficulties. Change the sterile occlusive dressing if it becomes soiled or wet. Apply an alternate method of oxygen delivery, such as administering oxygen by nasal cannula, if respiratory support is needed.
Q6: How long does the tracheostomy stoma take to close after decannulation?
Epithelial tissue begins to form within 24 to 48 hours after tube removal, and the stoma opening typically closes within 4 to 5 days. Surgical closure is usually not needed. Patients should be taught to splint the stoma with their fingers when coughing, swallowing, or speaking to facilitate healing.
Q7: What conditions must be met for a patient to be a candidate for decannulation?
The patient must have resolution of the primary condition requiring tracheostomy, hemodynamic stability, a stable and intact respiratory drive, and the ability to adequately exchange air and independently expectorate secretions. These criteria ensure the patient can maintain safe breathing without the tracheostomy tube.