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Vocal cord palsy (VCP) is a major complication of thyroidectomy. Some patients have preexisting VCP prompting the need for routine or selective preoperative evaluation of the vocal cords. The study aims at ascertaining the prevalence of preoperative VCP and making appropriate recommendations. This is a retrospective study of all adult patients who had thyroidectomy at the University of Nigeria Teaching Hospital. Case notes of patients who had thyroidectomy at the hospital from July 2010 to June 2015 were retrieved. Variables studied included biodata, duration of goiter, preoperative hoarseness, outcome of indirect laryngoscopy (IDL), histology of specimen, duration of follow-up, and incidence of postoperative hoarseness. Descriptive statistical analysis was done using SPSS version 20. Of the 91 patients aged 21-70 years (mean 42.08 years, SD 15.40), females outnumbered males with a M:F ratio of 1:10.4. Five patients had preoperative hoarseness, but only three had VCP. IDL was done for 25 (27.4%) patients out of which 22 (88.0%) had normal studies while the remaining three (all from the five with hoarseness) had VCP. Histology of the specimens showed malignancy in 10 (11%), benign in 55 (60.4%), and no report in 26 (28.6%). Five of the malignant histology patients showed normal findings on IDL, three had VCP and two had no preoperative IDL. There was no case of asymptomatic VCP. Vocal cord evaluation is recommended for patients with voice symptoms and those with malignant goiter.

Evaluation of Vocal Cord Function Before Thyroidectomy: Experience from a Developing Country