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JAMA Surg. 2019 Feb 27:e185842. doi: 10.1001/jamasurg.2018.5842. [Epub ahead of print]

Clinical Outcomes After Unilateral Adrenalectomy for Primary Aldosteronism.

Author information

1
Department of Surgical Oncology and Endocrine Surgery, University Medical Center Utrecht, Utrecht, the Netherlands.
2
Department of Endocrine and Minimally Invasive Surgery, Weill Cornell Medical College, New York, New York.
3
Department of Surgery, University of California, San Francisco.
4
Department of Surgery, Boston University School of Medicine, Boston, Massachusetts.
5
Department of Graduate Medical Sciences, Boston University School of Medicine, Boston, Massachusetts.
6
Department of Endocrine Surgery, New York-Presbyterian-Columbia University, New York.
7
Department of Surgery, University of Chicago Medical Center, Chicago, Illinois.
8
Department of Endocrine Surgery, Baylor St Luke's Medical Center, Houston, Texas.
9
Department of Surgical Oncology, University of Texas MD Anderson Cancer Center, Houston.
10
Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois.
11
Steinberg-Bernstein Centre for Minimally Invasive Surgery and Innovation, McGill University Health Centre, Montreal, Québec, Canada.
12
Department of Surgery, University Health Network-Toronto General Hospital, Toronto, Ontario, Canada.
13
Department of Endocrine Surgery, Royal North Shore Hospital, Sydney, Australia.
14
Department of Endocrine and Metabolic Surgery, Policlinico Universitario A Gemelli-Università Cattolica del Sacro Cuore, Rome, Italy.
15
Department of Surgery, Maastricht University Medical Center, Maastricht, the Netherlands.
16
Department of Surgery, VU Medical Center, Amsterdam, the Netherlands.
17
Department of Surgery, Academic Medical Center, Amsterdam, the Netherlands.
18
Department of Surgery, University Medical Center Groningen, Groningen, the Netherlands.
19
Department of Vascular Medicine, University Medical Center Utrecht, Utrecht, the Netherlands.
20
Department of Endocrine Oncology, University Medical Center Utrecht, Utrecht, the Netherlands.

Abstract

Importance:

In addition to biochemical cure, clinical benefits after surgery for primary aldosteronism depend on the magnitude of decrease in blood pressure (BP) and use of antihypertensive medications with a subsequent decreased risk of cardiovascular and/or cerebrovascular morbidity and drug-induced adverse effects.

Objective:

To evaluate the change in BP and use of antihypertensive medications within an international cohort of patients who recently underwent surgery for primary aldosteronism.

Design, Setting, and Participants:

A cohort study was conducted across 16 referral medical centers in Europe, the United States, Canada, and Australia. Patients who underwent unilateral adrenalectomy for primary aldosteronism between January 2010 and December 2016 were included. Data analysis was performed from August 2017 to June 2018. Unilateral disease was confirmed using computed tomography, magnetic resonance imaging, and/or adrenal venous sampling. Patients with missing or incomplete preoperative or follow-up data regarding BP or corresponding number of antihypertensive medications were excluded.

Main Outcomes and Measures:

Clinical success was defined based on postoperative BP and number of antihypertensive medications. Cure was defined as normotension without antihypertensive medications, and clear improvement as normotension with lower or equal use of antihypertensive medications. In patients with preoperative normotensivity, improvement was defined as postoperative normotension with lower antihypertensive use. All other patients were stratified as no clear success because the benefits of surgery were less obvious, mainly owing to postoperative, persistent hypertension. Clinical outcomes were assessed at follow-up closest to 6 months after surgery.

Results:

On the basis of inclusion and exclusion criteria, a total of 435 patients (84.6%) from a cohort of 514 patients who underwent unilateral adrenalectomy were eligible. Of these patients, 186 (42.3%) were women; mean (SD) age at the time of surgery was 50.7 (11.4) years. Cure was achieved in 118 patients (27.1%), clear improvement in 135 (31.0%), and no clear success in 182 (41.8%). In the subgroup classified as no clear success, 166 patients (91.2%) had postoperative hypertension. However, within this subgroup, the mean (SD) systolic and diastolic BP decreased significantly by 9 (22) mm Hg (P < .001) and 3 (15) mm Hg (P = .04), respectively. Also, the number of antihypertensive medications used decreased from 3 (range, 0-7) to 2 (range, 0-6) (P < .001). Moreover, in 75 of 182 patients (41.2%) within this subgroup, the decrease in systolic BP was 10 mm Hg or greater.

Conclusions and Relevance:

In this study, for most patients, adrenalectomy was associated with a postoperative normotensive state and reduction of antihypertensive medications. Furthermore, a significant proportion of patients with postoperative, persistent hypertension may benefit from adrenalectomy given the observed clinically relevant and significant reduction of BP and antihypertensive medications.

PMID:
30810749
DOI:
10.1001/jamasurg.2018.5842

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