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O'Malley KJ, Alnablsi MW, Xi Y, Pathak M, Khan F, Pillai AK, Kathuria MK, Vongpatanasin W. Diagnostic performance of the adrenal vein to inferior vena cava aldosterone ratio in classifying the subtype of primary aldosteronism. Hypertens Res 2023; 46:2535-2542. [PMID: 37673958 DOI: 10.1038/s41440-023-01421-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 07/30/2023] [Accepted: 08/20/2023] [Indexed: 09/08/2023]
Abstract
Adrenal vein sampling (AVS) is the standard procedure for distinguishing unilateral primary aldosteronism (PA) from bilateral PA. In cases where only one adrenal vein is successfully cannulated, it has been suggested that subtype classification can be determined based on the ratio of the concentration of aldosterone between the adrenal vein and the inferior vena cava (AV/IVC index). However, diagnostic performance of the ipsilateral versus contralateral AV/IVC index in predicting lateralization has not been directly compared. In a retrospective cohort of 133 patients with confirmed PA who underwent successful AVS, the performance of the AV/IVC index to predict laterality was evaluated and the area under the receiver operating characteristic (AUROC) curves was calculated. In detecting left unilateral PA (n = 47), the AUROC of the right AV/IVC index (RAV/IVC) was significantly higher than the AUROC of the left AV/IVC (LAV/IVC) index (0.967 vs. 0.871, p = 0.008). In detecting right unilateral PA (n = 30), the AUROC of the LAV/IVC index tended to be higher than that of the RAV/IVC index, but the difference did not reach statistical significance (0.966 vs. 0.906, p = 0.08). In detecting left unilateral PA, the sensitivities of the RAV/IVC and LAV/IVC indices were 83% and 46%, respectively, while the specificities of both were above 90%. In detecting right unilateral PA, the sensitivities of the LAV/IVC and RAV/IVC indices were 80% and 43%, respectively, while the specificities of both were above 90%. The AV/IVC index has superior diagnostic performance in detecting contralateral unilateral PA compared to ipsilateral unilateral PA.
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Affiliation(s)
- Kyle J O'Malley
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Mhd W Alnablsi
- Department of Radiology (Division of Vascular Interventional Radiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Yin Xi
- Department of Radiology (Division of Vascular Interventional Radiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Mona Pathak
- Department of Pharmacotherapy, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Fatima Khan
- Department of Radiology (Division of Vascular Interventional Radiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Anil K Pillai
- Department of Radiology (Division of Vascular Interventional Radiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Manoj K Kathuria
- Department of Radiology (Division of Vascular Interventional Radiology), University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Wanpen Vongpatanasin
- Department of Internal Medicine (Division of Cardiology, Hypertension Section), University of Texas Southwestern, Dallas, TX, USA.
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Bioletto F, Lopez C, Bollati M, Arata S, Procopio M, Ponzetto F, Beccuti G, Mengozzi G, Ghigo E, Maccario M, Parasiliti-Caprino M. Predictive performance of aldosterone-to-renin ratio in the diagnosis of primary aldosteronism in patients with resistant hypertension. Front Endocrinol (Lausanne) 2023; 14:1145186. [PMID: 37223051 PMCID: PMC10200868 DOI: 10.3389/fendo.2023.1145186] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 04/20/2023] [Indexed: 05/25/2023] Open
Abstract
Background The systematic use of confirmatory tests in the diagnosis of primary aldosteronism (PA) increases costs, risks and complexity to the diagnostic work-up. In light of this, some authors proposed aldosterone-to-renin (ARR) cut-offs and/or integrated flow-charts to avoid this step. Patients with resistant hypertension (RH), however, are characterized by a dysregulated renin-angiotensin-aldosterone system, even in the absence of PA. Thus, it is unclear whether these strategies might be applied with the same diagnostic reliability in the setting of RH. Methods We enrolled 129 consecutive patients diagnosed with RH and no other causes of secondary hypertension. All patients underwent full biochemical assessment for PA, encompassing both basal measurements and a saline infusion test. Results 34/129 patients (26.4%) were diagnosed with PA. ARR alone provided a moderate-to-high accuracy in predicting the diagnosis of PA (AUC=0.908). Among normokalemic patients, the ARR value that maximized the diagnostic accuracy, as identified by the Youden index, was equal to 41.8 (ng/dL)/(ng/mL/h), and was characterized by a sensitivity and a specificity of 100% and 67%, respectively (AUC=0.882); an ARR > 179.6 (ng/dL)/(ng/mL/h) provided a 100% specificity for the diagnosis of PA, but was associated with a very low sensitivity of 20%. Among hypokalemic patients, the ARR value that maximized the diagnostic accuracy, as identified by the Youden index, was equal to 49.2 (ng/dL)/(ng/mL/h), and was characterized by a sensitivity and a specificity of 100% and 83%, respectively (AUC=0.941); an ARR > 104.0 (ng/dL)/(ng/mL/h) provided a 100% specificity for the diagnosis of PA, with a sensitivity of 64%. Conclusions Among normokalemic patients, there was a wide overlap in ARR values between those with PA and those with essential RH; the possibility to skip a confirmatory test should thus be considered with caution in this setting. A better discriminating ability could be seen in the presence of hypokalemia; in this case, ARR alone may be sufficient to skip confirmatory tests in a suitable percentage of patients.
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Affiliation(s)
- Fabio Bioletto
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Chiara Lopez
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Martina Bollati
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Stefano Arata
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Matteo Procopio
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Federico Ponzetto
- Clinical Biochemistry Laboratory, City of Health and Science University Hospital, Turin, Italy
| | - Guglielmo Beccuti
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Giulio Mengozzi
- Clinical Biochemistry Laboratory, City of Health and Science University Hospital, Turin, Italy
| | - Ezio Ghigo
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Mauro Maccario
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Mirko Parasiliti-Caprino
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
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Zhang W, Wang J, Shao M, Zhao Y, Ji H, Guo F, Song Y, Fan X, Wei F, Qin G. The performance of left/right adrenal volume ratio and volume difference in predicting unilateral primary aldosteronism. J Endocrinol Invest 2023; 46:687-698. [PMID: 36301436 DOI: 10.1007/s40618-022-01912-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 08/26/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE The role of computed tomography (CT) in the diagnosis of primary aldosteronism (PA) warrants attention, since the success application of adrenal venous sampling (AVS) remains limited. We aimed to investigate the value of CT-based volumetric indicators, including left-versus-right-adrenal-volume ratio (L/Rv) and left-subtract-right-adrenal-volume difference (L - Rv), in the diagnosis of unilateral primary aldosteronism (UPA). METHODS A retrospective case-control study included 153 patients with PA and 1272 controls. AVS was used to classify patients into bilateral disease, left-sided disease, and right-sided disease groups. RESULTS Adrenal gland volume on both sides of PA patients was significantly larger than controls. The optimal cutoff values of L/Rv and L - Rv were 1.417 [area under the curve (AUC) 0.864] and 1.185 (AUC 0.827), respectively, for the diagnosis of left-sided PA, and 1.030 (AUC 0.767) and 0.220 (AUC 0.769), respectively, for the diagnosis of right-sided PA. The mean AUC for subsequent cross-validation ranged from 0.77 ± 0.03 to 0.86 ± 0.02. Based on the optimal cutoff values, the combination of L/Rv and L - Rv detected 69.6% of patients with left-sided PA and 74.3% of patients with right-sided PA, with a specificity of 93.5% and 89.0%, respectively. For a better clinical application, we reported the sub-optimal cutoffs corresponding to a specificity of 95%. A L/Rv higher than 1.431 and a L - Rv higher than 3.185 as sub-optimal cutoff values was detected in 26.1% of patients with left-sided PA (specificity: 97.2%). A L/Rv smaller than 0.892 and a L - Rv smaller than -0.640 could detect 48.6% of patients with right-sided PA (specificity: 97.5%). CONCLUSIONS CT-based L/Rv and L - Rv performed well in predicting UPA. The combination of L/Rv and L - Rv may serve as a potential indicator for guiding surgical decision making in centers without AVS programs.
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Affiliation(s)
- W Zhang
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
| | - J Wang
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
| | - M Shao
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
| | - Y Zhao
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
| | - H Ji
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
| | - F Guo
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
| | - Y Song
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
| | - X Fan
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
| | - F Wei
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
- Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China
| | - G Qin
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China.
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Huang M, Yang D, Zhang Y, Zhang Y, Mu Y. The value of CT-based energy imaging to discriminate dominant side lesions in primary aldosteronism. Front Endocrinol (Lausanne) 2023; 14:1121388. [PMID: 37124744 PMCID: PMC10140406 DOI: 10.3389/fendo.2023.1121388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 03/27/2023] [Indexed: 05/02/2023] Open
Abstract
Purpose The current clinical discrimination of the dominant side of primary aldosteronism (PA) mainly relies on invasive adrenal venous sampling (AVS) examination. This study investigated the feasibility of dual-energy CT energy imaging parameters as a novel biomarker in identifying bilateral adrenal dominant lesions. Methods Fifty PA patients with bilateral lesions who underwent CT and AVS of the adrenal glands at Shaanxi Provincial People's Hospital from October 2019 to June 2021 were retrospectively analyzed. Forty-eight patients had successful bilateral blood collection and two failed right-sided blood collection due to venous variation. Forty patients who were classified based on AVS underwent unilateral adrenalectomy and pathological findings confirmed adenoma in all cases. Quantitative dual-energy CT parameters were measured for all adrenal lesions, and the differences in dual-energy CT energy spectrum imaging parameters between the dominant and nondominant adrenal lesions were compared. Results Among forty-eight PA patients with bilateral lesions, forty patients with preoperative AVS-determined lesions on the dominant side underwent unilateral adrenalectomy, and eight patients without the dominant side were treated with medication. The iodine concentration difference (ICD) in the arteriovenous phase was more significant in the 40 cases of primary aldosteronism with dominant adrenal lesions than in the nondominant adrenal lesions (1.18 ± 0.45 vs 0.41 ± 0.42). The NICAP was higher in the dominant adrenal lesions than in the non-dominant lesions (0.39 ± 0.39 vs 0.14 ± 0.05). The sensitivity and specificity of the diagnosis of the dominant adrenal lesion were 88.2% and 82.4% using the ICD of 0.68 as the threshold value. Conclusion Conventional CT has lower diagnostic value for dominant adrenal lesions, and CT-based energy imaging can be a new assessment method as a complement to AVS in identifying bilateral dominant adrenal lesions.
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Zibar Tomsic K, Dusek T, Alduk A, Knezevic N, Molnar V, Kraljevic I, Skoric Polovina T, Balasko A, Solak M, Matas N, Popovac H, Kralik-Oguic S, Kastelan D. Subtyping primary aldosteronism by inconclusive adrenal vein sampling: A derivation and validation study in a tertiary centre. Clin Endocrinol (Oxf) 2022; 97:849-859. [PMID: 35781892 DOI: 10.1111/cen.14794] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 06/17/2022] [Accepted: 06/30/2022] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Indices based on aldosterone/cortisol (A/C) concentration in the successfully cannulated adrenal vein (AV) and in the inferior vena cava (IVC) (AV/IVC) appear to be possible markers to verify the subtype of primary aldosteronism (PA) in the case of inconclusive results of adrenal vein sampling (AVS). The variability of results in previous studies encouraged us to calculate AV/IVC and adrenal A/C cutoff values that could predict the aetiology of PA. METHODS This retrospective study included 96 patients who underwent AVS due to PA between 2015 and 2020. The derivation cohort ultimately consisted of 60 patients with bilaterally successful AVS and a clear diagnosis of unilateral or bilateral disease. Receiver operating characteristic analysis was used to find the optimal A/C and AV/IVC cutoff values predicting the subtype of PA. The validation cohort consisted of 11 patients with either unsuccessful cannulation or a borderline lateralization index (LI), those patients underwent adrenalectomy because their indices were suggestive of unilateral disease based on the derivation cohort data. RESULTS The cutoff values of A/C ≤ 0.63 or AV/IVC ≤ 0.37 identified unaffected glands with a sensitivity of 91.2% and 97.1%, respectively, and a specificity of 90.7% and 88.4%, respectively. Unilateral ipsilateral gland involvement was characterized by A/C ≥ 3.5 or AV/IVC ≥ 3.4 with a corresponding specificity of 100%. All patients in the validation cohort achieved biochemical remission postoperatively. CONCLUSIONS A/C and AV/IVC cutoff values could be a useful tool to determine the subtype of PA in patients with unilateral successful AVS as well as in patients with a borderline LI.
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Affiliation(s)
- Karin Zibar Tomsic
- Department of Endocrinology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Tina Dusek
- Department of Endocrinology, University Hospital Centre Zagreb, Zagreb, Croatia
- School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Anamarija Alduk
- School of Medicine, University of Zagreb, Zagreb, Croatia
- Department of Radiology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Nikola Knezevic
- School of Medicine, University of Zagreb, Zagreb, Croatia
- Department of Urology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Vilim Molnar
- St. Catherine Specialty Hospital, Zagreb, Croatia
| | - Ivana Kraljevic
- Department of Endocrinology, University Hospital Centre Zagreb, Zagreb, Croatia
- School of Medicine, University of Zagreb, Zagreb, Croatia
| | | | - Annemarie Balasko
- Department of Endocrinology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Mirsala Solak
- Department of Endocrinology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Nino Matas
- Department of Internal Medicine, General Hospital Dubrovnik, Dubrovnik, Croatia
| | - Hrvoje Popovac
- Department of Endocrinology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Sasa Kralik-Oguic
- School of Medicine, University of Zagreb, Zagreb, Croatia
- Department of Laboratory Diagnostics, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Darko Kastelan
- Department of Endocrinology, University Hospital Centre Zagreb, Zagreb, Croatia
- School of Medicine, University of Zagreb, Zagreb, Croatia
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Carsote M. The Entity of Connshing Syndrome: Primary Aldosteronism with Autonomous Cortisol Secretion. Diagnostics (Basel) 2022; 12:diagnostics12112772. [PMID: 36428832 PMCID: PMC9689802 DOI: 10.3390/diagnostics12112772] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/22/2022] [Accepted: 11/08/2022] [Indexed: 11/15/2022] Open
Abstract
Connshing syndrome (CoSh) (adrenal-related synchronous aldosterone (A) and cortisol (C) excess) represents a distinct entity among PA (primary hyperaldosteronisms) named by W. Arlt et al. in 2017, but the condition has been studied for more than 4 decades. Within the last few years, this is one of the most dynamic topics in hormonally active adrenal lesions due to massive advances in steroids metabolomics, molecular genetics from CYP11B1/B2 immunostaining to genes constellations, as well as newly designated pathological categories according to the 2022 WHO classification. In gross, PA causes 4-10% of all high blood pressure (HBP) cases, and 20% of resistant HBP; subclinical Cushing syndrome (SCS) is identified in one-third of adrenal incidentalomas (AI), while CoSh accounts for 20-30% to 77% of PA subjects, depending on the tests used to confirm autonomous C secretion (ACS). The clinical picture overlaps with PA, hypercortisolemia being mild. ACS is suspected in PA if a more severe glucose and cardiovascular profile is identified, or there are larger tumours, ACS being an independent factor risk for kidney damage, and probably also for depression/anxiety and osteoporotic fractures. It seems that one-third of the PA-ACS group harbours mutations of C-related lines like PRKACA and GNAS. A novel approach means we should perform CYP11B2/CYP11B1 immunostaining; sometimes negative aldosteronoma for CYP11B1 is surrounded by micronodules or cell clusters with positive CYP11B1 to sustain the C excess. Pitfalls of hormonal assessments in CoSh include the index of suspicion (check for ACS in PA patients) and the interpretation of A/C ratio during adrenal venous sample. Laparoscopic adrenalectomy is the treatment of choice. Post-operative clinical remission rate is lower in CoSh than PA. The risk of clinically manifested adrenal insufficiency is low, but a synthetic ACTH stimulating testing might help to avoid unnecessary exposure to glucocorticoids therapy. Finally, postponing the choice of surgery may impair the outcome, having noted that long-term therapy with mineralocorticoids receptors antagonists might not act against excessive amounts of C. Awareness of CoSh improves management and overall prognosis.
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Affiliation(s)
- Mara Carsote
- Department of Endocrinology, Carol Davila University of Medicine and Pharmacy & C.I. Parhon National Institute of Endocrinology, 011683 Bucharest, Romania
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Imaging or Adrenal Vein Sampling Approach in Primary Aldosteronism? A Patient-Based Approach. Tomography 2022; 8:2735-2748. [PMID: 36412687 PMCID: PMC9680373 DOI: 10.3390/tomography8060228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/05/2022] [Accepted: 11/08/2022] [Indexed: 11/11/2022] Open
Abstract
Primary aldosteronism (PA) is the most frequent cause of secondary hypertension, associated with an increased risk of cardiovascular and cerebral disease, compared to essential hypertension. Therefore, it is mandatory to promptly recognize the disease and offer to the patient the correct diagnostic-therapeutic process in order to reduce new-onset cardiovascular events. It is fundamental to define subtype classification (unilateral or bilateral disease), in order to provide the best treatment (surgery for unilateral and medical treatment for bilateral disease). Here, we report five clinical cases of different subtypes of PA (patients with monolateral or bilateral PA, nondiagnostic AVS, allergy to iodinated contrast, and patients not suitable for surgery), with particular attention to the diagnostic-therapeutic process and the different approaches tailored to a single case. Since PA is a spectrum of various diseases, it needs a personalized diagnostic-therapeutic process, customized for the individual patient, depending on previous medical history, suitability for the surgery and patient's preferences.
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Bioletto F, Bollati M, Lopez C, Arata S, Procopio M, Ponzetto F, Ghigo E, Maccario M, Parasiliti-Caprino M. Primary Aldosteronism and Resistant Hypertension: A Pathophysiological Insight. Int J Mol Sci 2022; 23:ijms23094803. [PMID: 35563192 PMCID: PMC9100181 DOI: 10.3390/ijms23094803] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/19/2022] [Accepted: 04/25/2022] [Indexed: 12/10/2022] Open
Abstract
Primary aldosteronism (PA) is a pathological condition characterized by an excessive aldosterone secretion; once thought to be rare, PA is now recognized as the most common cause of secondary hypertension. Its prevalence increases with the severity of hypertension, reaching up to 29.1% in patients with resistant hypertension (RH). Both PA and RH are "high-risk phenotypes", associated with increased cardiovascular morbidity and mortality compared to non-PA and non-RH patients. Aldosterone excess, as occurs in PA, can contribute to the development of a RH phenotype through several mechanisms. First, inappropriate aldosterone levels with respect to the hydro-electrolytic status of the individual can cause salt retention and volume expansion by inducing sodium and water reabsorption in the kidney. Moreover, a growing body of evidence has highlighted the detrimental consequences of "non-classical" effects of aldosterone in several target tissues. Aldosterone-induced vascular remodeling, sympathetic overactivity, insulin resistance, and adipose tissue dysfunction can further contribute to the worsening of arterial hypertension and to the development of drug-resistance. In addition, the pro-oxidative, pro-fibrotic, and pro-inflammatory effects of aldosterone may aggravate end-organ damage, thereby perpetuating a vicious cycle that eventually leads to a more severe hypertensive phenotype. Finally, neither the pathophysiological mechanisms mediating aldosterone-driven blood pressure rise, nor those mediating aldosterone-driven end-organ damage, are specifically blocked by standard first-line anti-hypertensive drugs, which might further account for the drug-resistant phenotype that frequently characterizes PA patients.
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Parasiliti-Caprino M, Bioletto F, Ceccato F, Lopez C, Bollati M, Di Carlo MC, Voltan G, Rossato D, Giraudo G, Scaroni C, Ghigo E, Maccario M. The Accuracy of Simple and Adjusted Aldosterone Indices for Assessing Selectivity and Lateralization of Adrenal Vein Sampling in the Diagnosis of Primary Aldosteronism Subtypes. Front Endocrinol (Lausanne) 2022; 13:801529. [PMID: 35250861 PMCID: PMC8888437 DOI: 10.3389/fendo.2022.801529] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/19/2022] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVE This study aimed to evaluate the reliability of simple and corrected aldosterone indices for assessing the selectivity and lateralization of adrenal vein sampling (AVS) in patients with primary aldosteronism. METHODS Data of all consecutive patients with primary aldosteronism who underwent AVS for subtype diagnosis, followed at two Italian referral centers, were analyzed retrospectively. RESULTS AVS achieved bilateral selectivity in 112/144 patients. Unilateral disease was diagnosed in 60 cases (53.6%) and idiopathic hyperaldosteronism in 52 individuals (46.4%). The aldosterone index (aldosterone ratio between an adrenal vein and the inferior vena cava) showed a high accuracy in predicting selectivity, compared to a cortisol selectivity index of 1.1, and a moderate accuracy, compared to cortisol cut-offs of 2 and 3. The simple aldosterone index showed a moderate accuracy in predicting ipsi/contralateral aldosterone hypersecretion, while lesion side- and hypokalemia-corrected aldosterone index revealed a significant improvement in predicting ipsi/contralateral disease. Moreover, the comparative aldosterone index (aldosterone ratio in the dominant vs the non-dominant adrenal vein) revealed a high accuracy in predicting unilateral primary aldosteronism. For an immediate clinical application of our results, the adjusted cut-offs were calculated, according to the Youden's criterion and to a pre-established specificity of 90%, for all possible combinations of lesion side at imaging and presence/absence of hypokalemia. CONCLUSIONS This study demonstrated the diagnostic accuracy of simple and clinical-/imaging-corrected aldosterone indices for adrenal vein sampling in subtype diagnosis of primary aldosteronism and suggests the potential application of these tools to select patients for adrenalectomy when standard indices cannot be performed.
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Affiliation(s)
- Mirko Parasiliti-Caprino
- Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, City of Health and Science University Hospital, University of Turin, Turin, Italy
- *Correspondence: Mirko Parasiliti-Caprino, ; orcid.org/0000-0002-6930-7073
| | - Fabio Bioletto
- Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, City of Health and Science University Hospital, University of Turin, Turin, Italy
| | - Filippo Ceccato
- Endocrinology Unit, Department of Medicine DIMED, University-Hospital of Padua, Padua, Italy
| | - Chiara Lopez
- Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, City of Health and Science University Hospital, University of Turin, Turin, Italy
| | - Martina Bollati
- Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, City of Health and Science University Hospital, University of Turin, Turin, Italy
| | - Maria Chiara Di Carlo
- Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, City of Health and Science University Hospital, University of Turin, Turin, Italy
| | - Giacomo Voltan
- Endocrinology Unit, Department of Medicine DIMED, University-Hospital of Padua, Padua, Italy
| | - Denis Rossato
- Radiology Unit, City of Health and Science University Hospital, University of Turin, Turin, Italy
| | - Giuseppe Giraudo
- Surgery, City of Health and Science University Hospital, University of Turin, Turin, Italy
| | - Carla Scaroni
- Endocrinology Unit, Department of Medicine DIMED, University-Hospital of Padua, Padua, Italy
| | - Ezio Ghigo
- Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, City of Health and Science University Hospital, University of Turin, Turin, Italy
| | - Mauro Maccario
- Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, City of Health and Science University Hospital, University of Turin, Turin, Italy
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