Hoarseness After Intubation: Vocal Risks from Surgery
For most, hoarseness after general anesthesia is an expected, minor inconvenience to wait out over a few days. For professional voice users, it can be career-affecting. When persistent, it can significantly delay return to performance. Most patients are not informed about voice risks related to intubation during the pre-surgical consent process when the surgery itself does not risk the voice.
What Intubation Does to the Larynx
General anesthesia typically requires endotracheal intubation, the placement of a breathing tube through the mouth, past the vocal folds, and into the trachea. This process, even when performed skillfully by an anesthesiologist, places stress on the vocal fold tissue. The endotracheal tube rests between and against the vocal folds for the duration of the surgery. In prolonged procedures, the sustained contact and pressure can cause mucosal abrasion, edema, and in some cases, hemorrhage or granuloma formation at the posterior glottis, the area where the arytenoid cartilages are closest to the tube surface¹. Repositioning during surgery (especially common during head and neck procedures) further increases the risk.
The posterior commissure and the arytenoids are particularly vulnerable. Granulomas, which are inflammatory lesions that can form at the site of contact trauma, are one of the more common and more persistent complications of intubation-related injury. They typically present as persistent hoarseness that does not resolve in the expected post-surgical timeframe and may be accompanied by a sensation of something in the throat or discomfort with swallowing.
How Common Is Post-Intubation Voice Change?
Post-intubation hoarseness has been reported at widely varying rates across studies, reflecting differences in surgical duration, tube size, patient anatomy, and the technique of the intubating clinician. Rates of immediate post-extubation hoarseness range from roughly 14 -50% across the surgical literature¹.
For professional voice users, the threshold for concern is appropriately lower, and the definition of resolution is more demanding. The few days of expected recovery time that satisfies a general surgical standard is not the relevant metric for this population. Professional voice users also are at higher risk for symptoms from muscular tension or protective posturing of the larynx post-operatively.
Risk Factors That Increase Injury Likelihood
Several factors increase the likelihood of intubation-related vocal fold injury. Longer surgical duration is associated with greater risk due to sustained tube contact. Larger endotracheal tube diameter relative to the patient's laryngeal anatomy is a contributing factor. Patient movement during surgery, or coughing during extubation, can cause the tube to traumatize the vocal fold mucosa more severely. Pre-existing vocal injury may increase vulnerability.
Patients with a history of gastroesophageal reflux are at elevated risk of post-intubation complications because the laryngeal tissue is already in a state of inflammation prior to the procedure.
What Professional Voice Users Should Do Before Surgery
The first step professional voice user should take before any surgery requiring general anesthesia is communication, both with the surgical team and with a laryngologist.
Informing the anesthesiologist that you are a professional voice user prior to the procedure allows them to consider tube sizing and technique with your specific needs in mind. Requesting the smallest clinically appropriate endotracheal tube for your procedure is a reasonable and commonly accommodated preference. Asking whether supraglottic airway devices, which sit above the vocal folds rather than passing through them, might be appropriate for your specific procedure is also reasonable.
A pre-operative stroboscopic evaluation establishes a vocal fold baseline before the procedure. If voice changes persist post-operatively, having documented pre-surgical vocal fold status gives both the patient and the treating clinician clear evidence of what changed and when, rather than relying on retrospective description.
When Post-Surgical Hoarseness Requires Evaluation
The clinical practice guideline for hoarseness published by the American Academy of Otolaryngology recommends evaluation for hoarseness that persists beyond two to three weeks¹. For professional voice users, a lower threshold is appropriate. Any hoarseness that has not substantially resolved within one week of surgery, or that is accompanied by pain, dysphagia, shortness of breath, or pitch break, should be evaluated by a laryngologist before the performer returns to full vocal use.
Returning to heavy professional vocal use with an unresolved intubation injury risks converting a temporary inflammatory lesion into a more serious structural problem. The granulomas and contact ulcers that develop from intubation trauma are exacerbated by continued phonatory trauma and are significantly harder to treat when they have been allowed to mature into established lesions.
At the Center for Vocal Health, we regularly evaluate and treat patients with post-surgical voice changes, and we work with surgical teams to support professional voice users through elective procedures in a way that protects their instrument throughout the process.
References
¹ Stachler, R. J., Francis, D. O., Schwartz, S. R., Damask, C. C., Digoy, G. P., Krouse, H. J., et al. (2018). Clinical practice guideline: Hoarseness (dysphonia) (update). Otolaryngology — Head and Neck Surgery, 158(1 Suppl), S1–S42. Doidoi.org/10.1177/0194599817751030
