FRI700 Adverse Events In Patients With Primary Hyperparathyroidism With And Without Successful Parathyroidectomy - A Propensity-matched Comparison

Disclosure: J. Han: None. Y. Yuan: None. J. Hu: None. C. Ghosh: None. E. Kebebew: None. Objective: The aim of the study was to evaluate the impact of successful parathyroidectomy on renal, skeletal and cardiovascular adverse events in patients with primary hyperparathyroidism (PHPT). Background: PHPT may be associated with renal, skeletal and cardiovascular diseases. In some but not all studies, successful parathyroidectomy has been reported to be associated with reduced risks of renal, skeletal or cardiovascular adverse events. To date, there has not been a comprehensive study with granular data looking at the impact of parathyroidectomy on all adverse events that have been associated with PHPT. Methods: A health system cohort study was performed in 3,048 patients with PHPT as defined by ICD10 or ICD9 codes who had successful parathyroidectomy defined by CPT codes (n=1,105) and no parathyroidectomy (n=1943). Comparison of cardiovascular (arrhythmias, myocardial infarction, congestive heart failure, cardiac admission, hypertension, diabetes mellitus), renal (kidney stone, end-stage renal disease requiring dialysis, GFR < 30 mL/min) and skeletal (all fractures, fragility fractures (hip/pelvis and spinal fractures), diagnosis of osteoporosis or osteopenia) adverse events by parathyroidectomy status (successful vs. no parathyroidectomy) in unmatched and basic matched analyses, and propensity score (PS) matched analysis at 10 years of follow up. Results: The mean age was higher in the no parathyroidectomy arm. The comorbidity score was higher (4.1 vs 3.6) in patients who did not have parathyroidectomy with higher rates of congestive heart failure and myocardial infarction at baseline. Patients who had parathyroidectomy had a lower rate of subsequent diagnosis of cardiovascular adverse events at 10 years of follow up (OR 0.57, p<0.001). There was also a lower odds of death at 10 years in those who had successful parathyroidectomy (OR 0.29, p<0.001). These differences were significant in the unmatched and basic matched analyses, but were not significant after PS matching. There was no significant difference in 10 years rates of any fractures , fragility fractures, or renal adverse events. The odds of diagnosis of osteoporosis or osteopenia at 10 years of follow up was significantly lower in patients who had successful parathyroidectomy in all 3 analyses (PS-matching: OR 0.507, p<0.001). Conclusions: Compared to patients who did not have parathyroidectomy for PHPT, patients who had successful parathyroidectomy have lower 10 years rates of osteoporosis/osteopenia diagnoses. Cardiovascular adverse events were lower in patients who had successful parathyroidectomy but this may be due to higher baseline comorbidities in those who did not have parathyroidectomy. Presentation: Friday, June 16, 2023