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Laryngeal obstruction after Teflon injection.

H Ejnell, I Månsson, B Bake

Acta Oto-Laryngologica

|September 1, 1984

Summary

Teflon injection for vocal cord paralysis temporarily increases airway resistance but shows no long-term respiratory effects. Use with caution in severe respiratory impairment, but it

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Area of Science:

Otolaryngology
Pulmonology
Medical Engineering

Background:

Unilateral vocal cord paralysis can lead to respiratory compromise.
Teflon injection is a treatment option for vocal cord paralysis.
Assessing the respiratory impact of Teflon injection is crucial.

Purpose of the Study:

To evaluate the immediate and long-term respiratory effects of Teflon injection in patients with unilateral vocal cord paralysis.
To compare the efficacy of orolaryngeal airway resistance (Rol) measurement with spirometry and flow volume loops in assessing these effects.

Main Methods:

Twelve patients with unilateral vocal cord paralysis underwent Teflon injection.
Orolaryngeal airway resistance (Rol) was measured preoperatively, within one week postoperatively, and one month postoperatively.
Spirometry and flow volume loops were also performed for comparison.

Main Results:

Rol increased by approximately 75% within the first week postoperatively.
Only one patient experienced clinical symptoms of laryngeal obstruction.
Rol returned to preoperative levels by one month after injection.
Spirometry and flow volume loops were less sensitive than Rol in detecting changes.

Conclusions:

Teflon injection for unilateral vocal cord paralysis causes a temporary increase in airway resistance.
The procedure appears to have no lasting adverse respiratory effects.
Caution is advised for patients with pre-existing severe respiratory impairment.
Teflon injection can be considered safe for patients with progressive pulmonary disease regarding future respiratory impact.

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