Background: The Aldosteronoma Resolution Score (ARS) takes into consideration four, readily available, preoperative clinical parameters in predicting the likelihood of resolution of hypertension in patients 6 months after undergoing unilateral adrenalectomy for aldosterone-producing adenoma (APA). We sought to determine the durability of this predictive model after 1 year.
Methods: Sixty patients who underwent unilateral adrenalectomy for APA at a single institution between 2004 and 2013 were reviewed retrospectively. Patients who were normotensive without any antihypertensive medication requirement at greater than 1-year follow-up were considered to have complete resolution of hypertension.
Results: Forty-seven patients had data available for analysis. Median follow-up was 1,135 days (371-3,202). Forty-five percent of patients had complete resolution, 45% had improvement, and 10% had no improvement in hypertension. Applying the ARS, we found there was complete resolution of hypertension in 73% of patients with ARS 4-5, 53% of patients with ARS 2-3, and 24% of patients with ARS 0-1 compared with 75% (P = .9), 46% (P = .66), and 28% (P = .76), respectively, in the original cohort used to create the ARS.
Conclusion: Most patients (90%) have long-term improvement or complete resolution of hypertension after unilateral adrenalectomy for APA. The ARS predicts accurately a patient's likelihood of complete resolution of hypertension beyond 1 year.
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