A national analysis of trends, outcomes and volume-outcomes relationships in thyroid surgery
2017
Objectives
Thyroid conditions are common and their incidence is increasing. Surgery is the mainstay treatment for many thyroid conditions, and understanding its utilisation trends and morbidity are central to improving patient care.
Design
An N=near-all analysis of the English administrative dataset to identify trends in thyroid surgery specialisation, volume-outcome relationships, and the incidence and risk factors for short- and long-term morbidity.
Main outcome measures
Between 2004 and 2012, 72594 patients underwent elective thyroidectomy in England. Information about age, sex, morbidities, thyroid disease and surgery, adjuvant treatments, and complications including hypocalcaemia and vocal palsy were recorded.
Results
Mean age at surgery was 49±30 and a female predominance (82%) was observed. Most patients underwent hemithyroidectomy (51%) or total thyroidectomy (32%). Patients underwent surgery for benign (52.5%), benign inflammatory (21%), and malignant (17%) thyroid diseases. Thyroid surgery grew by 2.9% a year and increased in specialization. Increased surgeon volume significantly reduced lengths of stay: the proportion of length of stay outliers fell from 11.8% for patients of occasional thyroidectomists ( 50 thyroidectomies a year). Post-discharge vocal palsy and hypocalcaemia occurred in 1.87% and 1.58% of cases respectively. High-volume surgeons had a reduced incidence of vocal palsy and volumes >30 were consistently protective.
Conclusions
Thyroid surgery is increasingly specialised. High-volume surgeons achieve lower complications rates, including lower vocal palsy rates, and length of stay.
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