ENDOCRINE OUTCOMES OF TRANSSPHENOIDAL SURGERY FOR PITUITARY APOPLEXY VERSUS ELECTIVE SURGERY FOR PITUITARY ADENOMA.

To determine the rate of hormone replacement therapy (HRT) after transsphenoidal surgery (TSS) for pituitary apoplexy (PA) versus elective resection of a null cell (NC) macroadenoma. A retrospective cohort study was performed. Data was collected on all consecutive patients who underwent TSS from December 31, 2000 to December 31, 2016. Patients were split into two groups: () patients that presented with PA, and () patients that underwent elective TSS for NC macroadenoma. Postoperative pituitary function was determined by examining HRT, hormone lab values, and an evaluation by an endocrinologist for each patient. The odds ratio (OR) was calculated to determine if there was an association between PA and the need for HRT after surgery when compared to elective resection of a NC macroadenoma. The need for HRT was significantly higher following surgery for PA compared to resection of a NC macroadenoma (14.7% versus 2.9%, OR = 5.690; 95% confidence interval (CI) = 1.439 to 22.500; = .013). There is an increased need for hormone replacement therapy after surgery in patients with PA versus patients undergoing elective resection of a NC macroadenoma. Further studies are warranted to strengthen this data and help determine further predictors of the need for HRT. = brain natriuretic peptide; = confidence interval; = desmopressin acetate; = growth hormone; = hormone replacement therapy; = magnetic resonance imaging; = null cell (adenoma); = odds ratio; = pituitary apoplexy; = transsphenoidal surgery.