Incentive Spirometry After Thyroidectomy: Not Recommended
Incentive spirometry should not be used for routine chest physiotherapy after thyroidectomy. The available evidence does not support its use in this specific surgical population, and the primary postoperative concerns after thyroid surgery relate to airway management and hematoma surveillance—not pulmonary complications that incentive spirometry aims to prevent.
Why This Recommendation Makes Sense
Thyroidectomy Is Not a High-Risk Pulmonary Surgery
The 2022 multidisciplinary consensus guidelines from the Difficult Airway Society, British Association of Endocrine and Thyroid Surgeons, and British Association of Otorhinolaryngology focus entirely on airway management and hematoma recognition after thyroidectomy 1. These guidelines emphasize:
- Immediate oxygen supplementation and head-up positioning if complications arise
- Recognition of airway compromise signs (the DESATS acronym: Difficulty swallowing, EWS elevation, Swelling, Anxiety, Tachypnea, Stridor)
- Emergency equipment availability for wound evacuation
Notably absent from these comprehensive thyroid surgery guidelines is any mention of incentive spirometry or routine chest physiotherapy, indicating these interventions are not considered relevant to thyroidectomy care 1.
Evidence for Incentive Spirometry Is Limited to Specific Contexts
The 2011 AARC clinical practice guideline on incentive spirometry explicitly states that incentive spirometry alone is not recommended for routine use in the preoperative and postoperative setting 2. When it does show benefit, it's specifically in:
- Thoracic surgery (lung resections, lobectomy) 3, 4, 5
- Upper abdominal surgery 2, 6
- Patients with COPD or significant smoking history undergoing high-risk pulmonary procedures 7
Thyroidectomy does not fall into any of these categories. It's a neck surgery with minimal impact on respiratory mechanics, no violation of the thoracic cavity, and no direct manipulation of lung tissue.
The Risk-Benefit Profile Doesn't Favor Its Use
After thyroidectomy, the critical period involves monitoring for:
- Hematoma formation (can occur rapidly and compromise the airway)
- Recurrent laryngeal nerve injury (affects vocal cord function)
- Hypocalcemia (from parathyroid manipulation)
Incentive spirometry requires deep inspiration that could theoretically:
- Increase intrathoracic pressure changes
- Potentially stress fresh surgical sites in the neck
- Distract from more important monitoring priorities
The 2021 guidelines on enhanced recovery after pulmonary lobectomy found that multimodal physiotherapy is superior to isolated techniques like incentive spirometry 3. They concluded that adding incentive spirometry to standard care (early mobilization, pain control, breathing exercises) provided no additional benefit in low-risk patients.
What Should Be Done Instead
Focus on thyroidectomy-specific postoperative care:
- Airway surveillance using the DESATS monitoring system 1
- Head-up positioning to reduce venous congestion 1
- Early mobilization (standard for all surgery)
- Adequate analgesia to allow comfortable breathing
- Emergency equipment at bedside (post-thyroid surgery emergency box) 1
Important Caveats
If a patient undergoing thyroidectomy has concurrent significant pulmonary disease (severe COPD, recent pneumonia, baseline hypoxemia), then respiratory interventions may be warranted—but this would be based on their pulmonary comorbidity, not the thyroidectomy itself. In such cases, multimodal physiotherapy including deep breathing exercises, early mobilization, and optimal pain control would be more appropriate than incentive spirometry alone 3, 2.
The evidence is clear: routine incentive spirometry after thyroidectomy lacks both theoretical justification and empirical support. Resources should be directed toward thyroid-specific complications that actually threaten morbidity and mortality in this population.