Post-Thyroidectomy Vocal Fold Immobility With Aspiration Risk

The findings are consistent with unilateral vocal fold immobility from recurrent laryngeal nerve injury after thyroidectomy: breathy phonation, low maximum phonation time, high s/z ratio, a large VHI-10 impact, a paramedian fold, glottic gap, and absent mucosal wave on the affected side. The most urgent finding is not the voice but the swallowing: coughing with thin liquids, two choking episodes, and 4 kg of weight loss raise concern for aspiration and inadequate intake. Swallowing safety and nutrition should be addressed first, with a clinical swallowing examination and instrumental assessment, videofluoroscopy or flexible endoscopic evaluation, before oral intake is advanced.

Complete voice rest is not an appropriate treatment for vocal fold paresis and can increase stiffness and maladaptive patterns. "Waiting" is also not a plan: some paresis recovers over 6–12 months, but Robert has aspiration risk and occupational voice demands now. He should be referred to a laryngologist for confirmation and discussion of medialization, and to voice therapy for compensatory function while recovery is monitored.

For swallowing, the plan should be driven by instrumental findings. Depending on the physiology, the SLP might recommend thickened liquids at a specified IDDSI level, smaller boluses, a postural adjustment, effortful swallow, or the Mendelsohn maneuver, with reassessment after a trial period. The goal is safe oral intake and adequate nutrition, not permanent restriction; the least restrictive effective diet should be documented, and the physician and dietitian should be involved if weight loss continues.

For voice, indirect work includes hydration, reducing irritants, avoiding throat clearing, and planning voice use across the teaching day. Direct work should include resonant voice, semi-occluded vocal tract exercises, easy phonation, and forward focus, while avoiding hard glottal attack and forceful pushing that can worsen the glottic gap. Amplification can reduce vocal load in the classroom. Outcome measures should include VHI-10, maximum phonation time, s/z ratio, acoustic and perceptual measures, patient-reported swallowing function, instrumental swallow findings, and weight. Goals should be functional, such as returning to teaching with adequate vocal endurance and maintaining safe oral intake.

Robert should hear a realistic but hopeful message: unilateral paresis often improves, but recovery is variable and cannot be guaranteed. Voice therapy can improve closure and efficiency even if the fold never moves normally, and it is not a cosmetic extra. If recovery is incomplete after an appropriate observation period, or if aspiration or occupational needs are urgent, medialization options include injection laryngoplasty, which can be temporary, and thyroplasty, which is more permanent. The timing and choice belong to the laryngologist, but the SLP should help Robert understand that waiting indefinitely is not the only option.

For teaching, a staged return is reasonable once swallowing is safe: amplification, scheduled hydration and voice breaks, reducing shouting over classroom noise, and pacing the day. He should not expect a "cure" in the sense of a guarantee that his voice will be exactly as before, but he can expect functional communication. The SLP should also screen for depression or anxiety related to voice change and refer if needed, because the vocational and identity impact is substantial.