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Habas E, Errayes A, Habas E, Alfitori G, Habas A, Farfar K, Rayani A, Habas A, Elzouki AN. Masked phenomenon: renal and cardiovascular complications; review and updates. Blood Press 2024; 33:2383234. [PMID: 39056371 DOI: 10.1080/08037051.2024.2383234] [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: 06/17/2024] [Revised: 07/10/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024]
Abstract
BACKGROUND In the in-clinic blood pressure (BP) recording setting, a sizable number of individuals with normal BP and approximately 30% of patients with chronic renal disease (CKD) exhibit elevated outpatient BP records. These individuals are known as masked hypertension (MHTN), and when they are on antihypertensive medications, but their BP is not controlled, they are called masked uncontrolled hypertension (MUHTN). The masked phenomenon (MP) (MHTN and MUHTN) increases susceptibility to end-organ damage (a two-fold greater risk for cardiovascular events and kidney dysfunction). The potential extension of the observed benefits of MP therapy, including a reduction in end-organ damage, remains questionable. AIM AND METHODS This review aims to study the diagnostic methodology, epidemiology, pathophysiology, and significance of MP management in end-organs, especially the kidneys, cardiovascular system, and outcomes. To achieve the purposes of this non-systematic comprehensive review, PubMed, Google, and Google Scholar were searched using keywords, texts, and phrases such as masked phenomenon, CKD and HTN, HTN types, HTN definition, CKD progression, masked HTN, MHTN, masked uncontrolled HTN, CKD onset, and cardiovascular system and MHTN. We restricted the search process to the last ten years to search for the latest updates. CONCLUSION MHTN is a variant of HTN that can be missed if medical professionals are unaware of it. Early detection by ambulatory or home BP recording in susceptible individuals reduces end-organ damage and progresses to sustained HTN. Adherence to the available recommendations when dealing with masked phenomena is justifiable; however, further studies and recommendation updates are required.
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Affiliation(s)
- Elmukhtar Habas
- Medical Department, Hamad General Hospital, Qatar University, Doha, Qatar
| | - Almehdi Errayes
- Medical Department, Hamad General Hospital, Qatar University, Doha, Qatar
| | - Eshrak Habas
- Internal Medicine, Medical Department, Tripoli Central Hospital, University of Tripoli, Tripoli, Libya
| | - Gamal Alfitori
- Medical Department, Hamad General Hospital, Qatar University, Doha, Qatar
| | - Ala Habas
- Medical Department, Alwakra General Hospital, Qatar University, Alwakra, Qatar
| | - Kalifa Farfar
- Medical Department, Alwakra General Hospital, Qatar University, Alwakra, Qatar
| | - Amnna Rayani
- Tripoli Children Hospital, University of Tripoli, Tripoli, Libya
| | - Aml Habas
- Tripoli Children Hospital, University of Tripoli, Tripoli, Libya
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Karev E, Verbilo SL, Malev EG, Prokudina MN. The impact of medical therapy on left ventricular strain: Current state and future perspectives. JOURNAL OF CLINICAL ULTRASOUND : JCU 2022; 50:887-898. [PMID: 35617148 DOI: 10.1002/jcu.23244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 04/21/2022] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
The speckle tracking strain is becoming a frequently used marker of subclinical left ventricular systolic dysfunction. Despite the wide range of data concerning left ventricular strain variability in the general population and its changes in various pathologic conditions, the information about the impact of medical therapy on left ventricle strain is limited. This article provides an analysis of published studies of left ventricle strain changes in response to different agents and combinations of medical therapies used for hypertension and congestive heart failure.
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Affiliation(s)
- Egor Karev
- Federal State Budgetary Institution "V.A. Almazov National Medical Research Center" of the Ministry of Health of the Russian Federation, Saint Petersburg, Russia
| | - Sergey L Verbilo
- Federal State Budgetary Institution "V.A. Almazov National Medical Research Center" of the Ministry of Health of the Russian Federation, Saint Petersburg, Russia
| | - Eduard G Malev
- Research Laboratory for Connective Tissue Dysplasia, Heart and Vessels Institute, Federal State Budgetary Institution "V.A. Almazov National Medical Research Center" of the Ministry of Health of the Russian Federation, Saint Petersburg, Russia
| | - Maria N Prokudina
- Limited Liability Company "International Heart Center", 6 Tverskaya street, Saint-Petersburg, 191015, Russia
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Schultz MG, La Gerche A, Sharman JE. Cardiorespiratory Fitness, Workload, and the Blood Pressure Response to Exercise Testing. Exerc Sport Sci Rev 2021; 50:25-30. [PMID: 34669623 DOI: 10.1249/jes.0000000000000276] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ABSTRACT We propose that for correct clinical interpretation of exaggerated exercise blood pressure (EEBP), both cardiorespiratory fitness and exercise workload must be considered. A key recommendation towards achieving the correct clinical interpretation of EEBP is that exercise BP should be measured during submaximal exercise with a fixed external workload.
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Affiliation(s)
- Martin G Schultz
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia Baker Institute, Melbourne, Australia
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Moore MN, Schultz MG, Hare JL, Marwick TH, Sharman JE. Improvement in functional capacity with spironolactone masks the treatment effect on exercise blood pressure. J Sci Med Sport 2021; 25:103-107. [PMID: 34690065 DOI: 10.1016/j.jsams.2021.09.008] [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: 03/14/2021] [Revised: 07/09/2021] [Accepted: 09/20/2021] [Indexed: 11/18/2022]
Abstract
OBJECTIVES A hypertensive response to submaximal exercise is associated with cardiovascular disease but this relationship is influenced by functional capacity. Spironolactone improves functional capacity, which could mask treatment effects on exercise blood pressure. This study sought to examine this hypothesis. DESIGN Retrospective analysis of a randomized clinical trial. METHODS 102 participants (54 ± 9 years; 52% male) with a hypertensive response to maximal exercise (systolic BP ≥210 mm Hg men; ≥190 mm Hg women) were randomized to 3-month spironolactone 25 mg daily (n = 53) or placebo (n = 49). Submaximal exercise blood pressure was measured during low-intensity cycling (50, 60 or 70% age-predicted maximal heart rate). Functional capacity was measured as maximal oxygen capacity obtained during a maximal treadmill exercise test, and (resting) aortic stiffness by carotid-to-femoral pulse wave velocity. RESULTS Spironolactone improved submaximal exercise systolic blood pressure vs. placebo (-4 ± 16 vs. 2 ± 15 mm Hg, p = 0.045, Cohen's d = 0.42), and had a small (but non-statistically significant) improvement in functional capacity (0.64 ± 5.10 vs. -1.43 ± 5.04 ml/kg/min, p = 0.06, Cohen's d = 0.4). When treatment effects were expressed as the change in submaximal exercise systolic blood pressure relative to the change in functional capacity, a larger effect size was observed (-0.3 ± 1.1 vs. 0.3 ± 1.1 mm Hg/ml·kg·min-1, p = 0.01, Cohen's d = 0.58), but was not explained by improved aortic stiffness. CONCLUSIONS Spironolactone reduces submaximal exercise blood pressure, but this treatment effect may be hidden by improved functional capacity and a non-fixed workload. This highlights the most clinically relevant exercise blood pressure is at a low intensity and fixed workload where the influence of fitness on exercise blood pressure is removed, and the effects of therapy can be appreciated.
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Affiliation(s)
- Myles N Moore
- Menzies Institute for Medical Research, College of Health and Medicine, University of Tasmania, Australia
| | - Martin G Schultz
- Menzies Institute for Medical Research, College of Health and Medicine, University of Tasmania, Australia
| | | | | | - James E Sharman
- Menzies Institute for Medical Research, College of Health and Medicine, University of Tasmania, Australia.
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5
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Cheng HM, Chuang SY, Wang TD, Kario K, Buranakitjaroen P, Chia YC, Divinagracia R, Hoshide S, Minh HV, Nailes J, Park S, Shin J, Siddique S, Sison J, Soenarta AA, Sogunuru GP, Sukonthasarn A, Tay JC, Teo BW, Turana Y, Verma N, Zhang Y, Wang JG, Chen CH. Central blood pressure for the management of hypertension: Is it a practical clinical tool in current practice? J Clin Hypertens (Greenwich) 2019; 22:391-406. [PMID: 31841279 DOI: 10.1111/jch.13758] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 11/12/2019] [Accepted: 11/17/2019] [Indexed: 12/31/2022]
Abstract
Since noninvasive central blood pressure (BP) measuring devices are readily available, central BP has gained growing attention regarding its clinical application in the management of hypertension. The disagreement between central and peripheral BP has long been recognized. Some previous studies showed that noninvasive central BP may be better than the conventional brachial BP in association with target organ damages and long-term cardiovascular outcomes. Recent studies further suggest that the central BP strategy for confirming a diagnosis of hypertension may be more cost-effective than the conventional strategy, and guidance of hypertension management with central BP may result in less use of medications to achieve BP control. Despite the use of central BP being promising, more randomized controlled studies comparing central BP-guided therapeutic strategies with conventional care for cardiovascular events reduction are required because noninvasive central and brachial BP measures are conveniently available. In this brief review, the rationale supporting the utility of central BP in clinical practice and relating challenges are summarized.
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Affiliation(s)
- Hao-Min Cheng
- Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Center for Evidence-Based Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Institute of Public Health, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Shao-Yuan Chuang
- Institute of Population Health Science, National Health Research Institutes, Miaoli, Taiwan
| | - Tzung-Dau Wang
- Department of Internal Medicine, National Taiwan University College of Medicine, Taipei City, Taiwan
| | - Kazuomi Kario
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Peera Buranakitjaroen
- Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Yook-Chin Chia
- Department of Medical Sciences, School of Healthcare and Medical Sciences, Sunway University, Bandar Sunway, Malaysia.,Department of Primary Care Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Romeo Divinagracia
- University of the East Ramon Magsaysay Memorial Medical Center Inc, Quezon City, Philippines
| | - Satoshi Hoshide
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Huynh Van Minh
- Department of Internal Medicine, University of Medicine and Pharmacy, Hue University, Hue, Vietnam
| | - Jennifer Nailes
- University of the East Ramon Magsaysay Memorial Medical Center Inc, Quezon City, Philippines
| | - Sungha Park
- Division of Cardiology, Cardiovascular Hospital, Yonsei Health System, Seoul, Korea
| | - Jinho Shin
- Faculty of Cardiology Service, Hanyang University Medical Center, Seoul, Korea
| | | | - Jorge Sison
- Section of Cardiology, Department of Medicine, Medical Center Manila, Manila, Philippines
| | - Arieska Ann Soenarta
- Department of Cardiology and Vascular Medicine, Faculty of Medicine, University of Indonesia-National Cardiovascular Center, Jakarta, Indonesia
| | - Guru Prasad Sogunuru
- MIOT International Hospital, Chennai, India.,College of Medical Sciences, Kathmandu University, Bharatpur, Nepal
| | - Apichard Sukonthasarn
- Cardiology Division, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Jam Chin Tay
- Department of General Medicine, Tan Tock Seng Hospital, Singapore, Singapore
| | - Boon Wee Teo
- Division of Nephrology, Department of Medicine, Yong Loo Lin School of Medicine, Singapore, Singapore
| | - Yuda Turana
- Faculty of Medicine and Health Sciences, Atma Jaya Catholic University of Indonesia, Jakarta, Indonesia
| | - Narsingh Verma
- Indian Society of Hypertension, King George's Medical University, Lucknow, India
| | - Yuqing Zhang
- Divisions of Hypertension and Heart Failure, Fu Wai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ji-Guang Wang
- Department of Hypertension, Centre for Epidemiological Studies and Clinical Trials, the Shanghai Institute of Hypertension, Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Chen-Huan Chen
- Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Center for Evidence-Based Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
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Cuspidi C, Sala C, Tadic M, Grassi G. When Office Blood Pressure Is Not Enough: The Case of Masked Hypertension. Am J Hypertens 2019; 32:225-233. [PMID: 30508171 DOI: 10.1093/ajh/hpy183] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 11/30/2018] [Indexed: 01/04/2023] Open
Abstract
An increasing attention has been devoted in the last two decades to masked hypertension (MH), a condition characterized by the fact that classification of a normal blood pressure (BP) status by office measurements is not confirmed by home and/or ambulatory BP monitoring (ABPM). MH definition (i.e., normal office BP, but high out-of-office BP) should be restricted to untreated subjects (true MH) whereas masked uncontrolled hypertension (MUCH) reserved to treated patients previously classified as hypertensives, presenting normal office BP and high ABPM or home values. Both MH and MUCH are associated with metabolic alterations, comorbidities, and hypertension-mediated organ damage (HMOD). Furthermore, the risk of cardiovascular events related to these conditions has been shown to be close or greater than that of sustained hypertension. This review discusses available evidence about MH and MUCH by focusing on its prevalence, clinical correlates, association with HMOD, prognostic significance, and their therapeutic implications.
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Affiliation(s)
- Cesare Cuspidi
- Department of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy
- Istituto Auxologico Italiano IRCCS, Milano, Italy
| | - Carla Sala
- Department of Clinical Sciences and Community Health, University of Milano and Fondazione IRCCS Ospedale Maggiore Policlinico, Milano, Italy
| | - Marijana Tadic
- Department of Cardiology, Charité-University-Medicine Campus Virchow Klinikum, Berlin, Germany
| | - Guido Grassi
- Department of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy
- IRCCS Multimedica, Sesto San Giovanni, Milano, Italy
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7
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Moore MN, Atkins ER, Salam A, Callisaya ML, Hare JL, Marwick TH, Nelson MR, Wright L, Sharman JE, Rodgers A. Regression to the mean of repeated ambulatory blood pressure monitoring in five studies. J Hypertens 2019; 37:24-29. [DOI: 10.1097/hjh.0000000000001977] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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8
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Sharman JE, Boutouyrie P, Laurent S. Arterial (Aortic) Stiffness in Patients with Resistant Hypertension: from Assessment to Treatment. Curr Hypertens Rep 2018; 19:2. [PMID: 28091867 DOI: 10.1007/s11906-017-0704-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PURPOSE OF REVIEW The purpose of the review is to examine whether measurement of aortic stiffness could be especially value-adding for risk stratification and treatment among patients with resistant hypertension (RH). RECENT FINDINGS Adverse arterial remodeling and increased aortic stiffness is associated with RH, and it may be of additional clinical benefit to measure aortic stiffness in these patients. However, there is insufficient evidence to determine whether aortic stiffness is excessively high relative to the level of blood pressure (BP) among people with RH. This issue needs resolution as it could help refine management decisions guided by aortic stiffness. If conventional antihypertensive therapy fails to lower BP in patients with RH, there is good rationale for effectiveness of spironolactone as add on therapy, and this should also improve aortic stiffness. Lifestyle intervention with exercise and diet should be additionally efficacious towards improving BP and aortic stiffness in patients with RH, but there is limited data in this patient population. For better characterization on the effects of BP treatment on aortic stiffness, measures of central aortic BP may help refine management decisions above and beyond conventional arm cuff BP. There is strong evidence to support the use of aortic stiffness as a tool to aid risk stratification in hypertension management. Although there is a theoretical basis for special additional benefit of measuring aortic stiffness in patients with RH (as distinct from uncomplicated hypertension), at this time, there is inadequate data available to make definitive conclusions and is an area for future investigation.
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Affiliation(s)
- James E Sharman
- Menzies Institute for Medical Research, University of Tasmania, Private Bag 23, Hobart, 7000, Australia.
| | - Pierre Boutouyrie
- Departments of Pharmacology, European Georges Pompidou Hospital, Assistance Publique Hôpitaux de Paris, Inserm UMR 970, University Paris Descartes, Paris, France
| | - Stéphane Laurent
- Departments of Pharmacology, European Georges Pompidou Hospital, Assistance Publique Hôpitaux de Paris, Inserm UMR 970, University Paris Descartes, Paris, France
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Palla M, Saber H, Konda S, Briasoulis A. Masked hypertension and cardiovascular outcomes: an updated systematic review and meta-analysis. Integr Blood Press Control 2018; 11:11-24. [PMID: 29379316 PMCID: PMC5759852 DOI: 10.2147/ibpc.s128947] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Background As many as one-third of individuals with normal office blood pressure (BP) are diagnosed with masked hypertension (HTN) based on ambulatory BP measurements (ABPM). Masked HTN is associated with higher risk of sustained HTN (SH) and increased cardiovascular morbidity. Methods The present study was designed to systematically review cohort studies and assess the effects of masked HTN compared to normotension and SH on cardiovascular events and all-cause mortality. We systematically searched the electronic databases, such as MEDLINE, PubMed, Embase, and Cochrane for prospective cohort studies, which evaluated participants with office and ambulatory and/or home BP. Results We included nine studies with a total number of 14729 participants (11245 normotensives, 3484 participants with masked HTN, 1984 participants with white-coat HTN, and 5143 participants with SH) with a mean age of 58 years and follow-up of 9.5 years. Individuals with masked HTN had significantly increased rates of cardiovascular events and all-cause mortality than normotensives and white-coat HTN and had lower rates of cardiovascular events than those with SH (odds ratio 0.61, 95% confidence interval 0.42–0.89; P=0.010; I2=84%). Among patients on antihypertensive treatment, masked HTN was associated with higher rates of cardiovascular events than in those with normotension and white-coat HTN and similar rates of cardiovascular events in those with treated SH. Conclusion Prompt screening of high-risk individuals with home BP measurements and ABPM, the diagnosis of masked HTN, and the initiation of treatment, may mitigate the adverse cardiovascular effects of masked HTN.
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Affiliation(s)
- Mohan Palla
- Division of Cardiology, Wayne State University, Detroit, MI
| | | | - Sanjana Konda
- Division of Cardiology, Wayne State University, Detroit, MI
| | - Alexandros Briasoulis
- Section of Heart Failure and Transplant, Division of Cardiovascular Diseases, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
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Targeted LOWering of Central Blood Pressure in patients with hypertension: Baseline recruitment, rationale and design of a randomized controlled trial (The LOW CBP study). Contemp Clin Trials 2017; 62:37-42. [DOI: 10.1016/j.cct.2017.08.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 08/11/2017] [Accepted: 08/14/2017] [Indexed: 11/20/2022]
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Schultz MG, Hughes AD, Davies JE, Sharman JE. Associations and clinical relevance of aortic-brachial artery stiffness mismatch, aortic reservoir function, and central pressure augmentation. Am J Physiol Heart Circ Physiol 2015; 309:H1225-33. [PMID: 26276816 DOI: 10.1152/ajpheart.00317.2015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 08/12/2015] [Indexed: 01/09/2023]
Abstract
Central augmentation pressure (AP) and index (AIx) predict cardiovascular events and mortality, but underlying physiological mechanisms remain disputed. While traditionally believed to relate to wave reflections arising from proximal arterial impedance (and stiffness) mismatching, recent evidence suggests aortic reservoir function may be a more dominant contributor to AP and AIx. Our aim was therefore to determine relationships among aortic-brachial stiffness mismatching, AP, AIx, aortic reservoir function, and end-organ disease. Aortic (aPWV) and brachial (bPWV) pulse wave velocity were measured in 359 individuals (aged 61 ± 9, 49% male). Central AP, AIx, and aortic reservoir indexes were derived from radial tonometry. Participants were stratified by positive (bPWV > aPWV), negligible (bPWV ≈ aPWV), or negative stiffness mismatch (bPWV < aPWV). Left-ventricular mass index (LVMI) was measured by two-dimensional-echocardiography. Central AP and AIx were higher with negative stiffness mismatch vs. negligible or positive stiffness mismatch (11 ± 6 vs. 10 ± 6 vs. 8 ± 6 mmHg, P < 0.001 and 24 ± 10 vs. 24 ± 11 vs. 21 ± 13%, P = 0.042). Stiffness mismatch (bPWV-aPWV) was negatively associated with AP (r = -0.18, P = 0.001) but not AIx (r = -0.06, P = 0.27). Aortic reservoir pressure strongly correlated to AP (r = 0.81, P < 0.001) and AIx (r = 0.62, P < 0.001) independent of age, sex, heart rate, mean arterial pressure, and height (standardized β = 0.61 and 0.12, P ≤ 0.001). Aortic reservoir pressure independently predicted abnormal LVMI (β = 0.13, P = 0.024). Positive aortic-brachial stiffness mismatch does not result in higher AP or AIx. Aortic reservoir function, rather than discrete wave reflection from proximal arterial stiffness mismatching, provides a better model description of AP and AIx and also has clinical relevance as evidenced by an independent association of aortic reservoir pressure with LVMI.
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Affiliation(s)
- Martin G Schultz
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia
| | - Alun D Hughes
- Institute for Cardiovascular Science, University College London, London, United Kingdom; and
| | - Justin E Davies
- International Centre for Circulatory Health, Imperial College London, London, United Kingdom
| | - James E Sharman
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia;
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12
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Youn JC, Kang SM. Cardiopulmonary Exercise Test in Patients with Hypertension: Focused on Hypertensive Response to Exercise. Pulse (Basel) 2015; 3:114-7. [PMID: 26587460 DOI: 10.1159/000431107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The cardiopulmonary exercise test (CPET) provides integrative exercise responses including the cardiovascular, pulmonary and skeletal muscle systems. It can be used for the identification of myocardial ischemia, evaluation of exercise capacity and tolerance, and the assessment of chronotropic competence or arrhythmias with the addition of ventilatory and gas exchange measurement information. Among them, hypertensive response to exercise (HRE) is known to be related with higher risk of future heart failure and cardiovascular events in patients with hypertension. Proposed underlying mechanisms of HRE can be found in ventricular-vascular uncoupling including decreased aortic distensibility, increased left ventricular mass, endothelial dysfunction, and diastolic dysfunction. The CPET might be useful in the identification of masked hypertension and the assessment of antihypertensive treatment efficacy in patients with hypertension.
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Affiliation(s)
- Jong-Chan Youn
- Division of Cardiology, Severance Cardiovascular Hospital and Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seok-Min Kang
- Division of Cardiology, Severance Cardiovascular Hospital and Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
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13
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Unmasking masked hypertension: prevalence, clinical implications, diagnosis, correlates and future directions. J Hum Hypertens 2014; 28:521-8. [PMID: 24573133 DOI: 10.1038/jhh.2014.9] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 12/27/2013] [Accepted: 01/23/2014] [Indexed: 12/17/2022]
Abstract
'Masked hypertension' is defined as having non-elevated clinic blood pressure (BP) with elevated out-of-clinic average BP, typically determined by ambulatory BP monitoring. Approximately 15-30% of adults with non-elevated clinic BP have masked hypertension. Masked hypertension is associated with increased risks of cardiovascular morbidity and mortality compared with sustained normotension (non-elevated clinic and ambulatory BP), which is similar to or approaching the risk associated with sustained hypertension (elevated clinic and ambulatory BP). The confluence of increased cardiovascular risk and a failure to be diagnosed by the conventional approach of clinic BP measurement makes masked hypertension a significant public health concern. However, many important questions remain. First, the definition of masked hypertension varies across studies. Further, the best approach in the clinical setting to exclude masked hypertension also remains unknown. It is unclear whether home BP monitoring is an adequate substitute for ambulatory BP monitoring in identifying masked hypertension. Few studies have examined the mechanistic pathways that may explain masked hypertension. Finally, scarce data are available on the best approach to treating individuals with masked hypertension. Herein, we review the current literature on masked hypertension including definition, prevalence, clinical implications, special patient populations, correlates, issues related to diagnosis, treatment and areas for future research.
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