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1. Evaluating the Cost-Effectiveness of Laryngeal Examination after Elective Total Thyroidectomy.

Author

Hung-Hin Lang, Brian, Wong, Carlos K. H., Tsang, Raymond K. Y., Kai Pun Wong, and Wong, Birgitta Y. H.

Abstract

Background. Although routine laryngeal examination (RLE) after thyroidectomy may cost more than selective laryngeal examination (SLE), it permits earlier detection and treatment of vocal cord palsy (VCP) and so may be cost-saving in the longer term. We compared the 2-year cost-effectiveness between RLE and SLE with RLE performed at 2 weeks (SLE-2w), 1 month (SLE-1m), and 3 months (SLE-3m) after thyroidectomy in the institution's perspective. Methods. Our case definition was a hypothetical 50-year-old woman who underwent an elective total thyroidectomy for a benign multinodular goiter. A decision-analytic model was constructed to compare the estimated cost-effectiveness between RLE, SLE-2w, SLE-1m, and SLE-3m after a 2-year period. Outcome probabilities, utilities, and costs were estimated from the literature. The threshold for cost-effectiveness was set at US$50,000/quality-adjusted life-year. Sensitivity and threshold analyses were used to examine model uncertainty. Results. RLE was not cost-effective because its incremental cost-effectiveness ratio to SLE-2w, SLE-1m, and SLE-3m were US$302,755, US$227,883 and US$247,105, respectively. RLE was only cost-effective when the temporary VCP rate increased >42.7 % or when the cost of RLE equaled zero. Similarly, SLE-2w was only costeffective to SLE-3m when dysphonia for temporary VCP at 3 months increased >39.13 %, dysphonia for permanent VCP at 3 months increased >50.29 %, or dysphonia without VCP at 3 months increased >42.69 %. However, none of these scenarios appeared clinically likely. Conclusions. In the institution's perspective, RLE was not cost-effective against the other three SLE strategies. Regarding to the optimal timing of SLE, SLE-3m appears to be a reasonable and acceptable strategy because of its relative low overall cost. [ABSTRACT FROM AUTHOR]

Published
2014
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2. Graves’ Ophthalmopathy as an Indication Increased the Risk of Hypoparathyroidism After Bilateral Thyroidectomy

Author

Kai-Pun Wong and Brian Hung-Hin Lang

Subjects
Adult, Male, endocrine system, medicine.medical_specialty, Cardiac Surgery, endocrine system diseases, Adolescent, Hypoparathyroidism, medicine.medical_treatment, Vascular Surgery, Article, Graves' ophthalmopathy, Young Adult, Risk Factors, Medicine & Public Health, medicine, Humans, Young adult, Aged, business.industry, Thyroidectomy, Thoracic Surgery, Vascular surgery, Middle Aged, medicine.disease, eye diseases, Surgery, Cardiac surgery, Graves Ophthalmopathy, Abdominal Surgery, Cardiothoracic surgery, General Surgery, Female, business, Abdominal surgery
Abstract

BACKGROUND: Studies have evaluated the effect of thyroidectomy on the course of Graves' ophthalmopathy (GO) but it is unclear how GO as an indication might affect surgical outcomes. We aimed to evaluate the impact of this indication on surgical outcomes in Graves' disease (GD). METHODS: From 1995 to 2008, 329 patients with GD underwent thyroidectomy. Patients were stratified into two groups, namely, those with GO as indication (GO) and those with non-GO indication (non-GO). Outcomes were compared between the groups and outcomes with significance were further analyzed by multivariate analyses to determine independent factors. RESULTS: The GO group was significantly older (P < 0.001), had more males (P < 0.001), and fewer relapses (P < 0.001) than the non-GO group. It also had a higher proportion of total/near-total thyroidectomy (P < 0.001), despite a shorter operating time (P = 0.024) and less blood loss (P = 0.010). When only total/near-total thyroidectomy was considered, the GO group had significantly more permanent hypoparathyroidism than the non-GO group (9.2 vs. 1.6%, P = 0.038), but the rate of permanent hypoparathyroidism was similar in the two groups when only those with parathyroid autotransplantation were considered. Other complications were similar between the two groups. By multivariate analysis, GO as indication was an independent risk factor for temporary (OR 1.97, P = 0.033) and permanent hypoparathyroidism (OR 4.76, P = 0.007). CONCLUSION: GO as a surgical indication (i.e., unstable or active GO requiring ophthalmic treatment or follow-up) was associated with increased risk of temporary and permanent hypoparathyroidism after bilateral thyroidectomy. Routine parathyroid autotransplantation may reduce the risk of permanent hypoparathyroidism in this select patient group., published_or_final_version, Springer Open Choice, 21 Feb 2012

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