Voice Prosthesis After Laryngectomy

Voice prosthesis or tracheoesophageal voice restoration represents the gold standard for voice rehabilitation following total laryngectomy. The technique uses a small silicone one-way valve placed in a tracheoesophageal puncture (TEP) created surgically between the posterior tracheal wall and anterior esophageal wall. When the patient occludes the tracheostoma during exhalation, pulmonary air is redirected through the prosthesis into the esophagus, vibrating the pharyngoesophageal segment to produce voice (neoglottic vibration).

Indications include patients who have undergone total laryngectomy with anatomically and physiologically appropriate pharyngoesophageal segment, motivated patient with appropriate manual dexterity, no severe pharyngoesophageal stricture, and adequate pulmonary function. Primary TEP is performed during initial laryngectomy surgery, while secondary TEP is performed weeks to months later in selected patients. Contraindications include severe cognitive impairment, inability to manage prosthesis, severe pharyngoesophageal hypertonicity unresponsive to dilation, and uncontrolled tumor recurrence at the puncture site.

Modern indwelling prostheses (Provox, Blom-Singer) typically last 3-6 months before requiring replacement due to candidal biofilm formation, valve incompetence, or leakage. Speech outcomes are excellent with 80-90% success rates, fluent intelligible speech production, near-normal speaking rate and rhythm, and significant quality-of-life improvement. Complications include device aspiration, leakage causing aspiration pneumonia, granulation tissue formation, fistula enlargement, and biofilm formation requiring frequent prosthesis change.