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Mizuno H. Hypertension and blood pressure variability in patients with obstructive sleep apnea. Hypertens Res 2024:10.1038/s41440-024-01714-7. [PMID: 38760529 DOI: 10.1038/s41440-024-01714-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 04/12/2024] [Indexed: 05/19/2024]
Affiliation(s)
- Hiroyuki Mizuno
- Division of Cardiovascular Medicine, Jichi Medical University School of Medicine, Tochigi, Japan.
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Seidel M, Kiziler MF, Matiakis M, Bertram S, Wang S, Seibert FS, Babel N, Westhoff TH. Predictors of blood pressure response to continuous positive airway pressure treatment in patients with sleep apnea. J Hypertens 2024; 42:777-782. [PMID: 38372359 PMCID: PMC10990021 DOI: 10.1097/hjh.0000000000003694] [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: 10/26/2023] [Revised: 01/08/2024] [Accepted: 01/31/2024] [Indexed: 02/20/2024]
Abstract
BACKGROUND Sleep apnea is associated with hypertension. Metaanalyses indicate that treatment of sleep apnea by continuous positive airway pressure (CPAP) reduces blood pressure (BP) by a mean of 3 mmHg. To date, predictors of BP response to CPAP remain incompletely understood. We hypothesized that the magnitude of CPAP-induced BP reduction depends on baseline apnea-hypopnea index (AHI) and the extent of daytime sleepiness. METHODS We performed a retrospective study on the association of BP response to CPAP with polysomnographic readings, intensity of sleepiness (measured by Epworth Sleepiness Scale, ESS), and epidemiologic parameters in 2461 patients with obstructive sleep apnea. BP response was defined as the difference between office BP at polysomonography examinations before and after initiation of CPAP. RESULTS Five hundred and fifty-five patients fulfilled all inclusion and exclusion criteria and were included in the analysis. Median monthly CPAP usage was 143.7 h (85.4-204.1 h). BP was significantly higher at baseline than at follow-up (129.9 ± 15.5 vs. 128.3 ± 15.2, P = 0.021) resulting in mean reduction of BP of -1.5 ± 19.2 mmHg. patients with a higher than median baseline AHI (median 21) showed a more pronounced reduction of BP than those with lower AHI (AHI ≥21: 130.5 ± 15.3 vs. 128.6 ± 14.6, P = 0.06; AHI <21: 129.5 ± 15.8 vs. 127.9 ± 15.8, P = 0.18). CPAP therapy led to a significant reduction in sleepiness (8.3 ± 4.8 vs. 6.6 ± 4.5, P < 0.0001). Those subjects with higher than median sleepiness score (ESS ≥8), however, did not show a significant difference in BP response compared with those with a lower sleepiness score. Receiver-operating characteristic (ROC) curve analyses investigating the accuracy of AHI and ESS to predict a BP reduction at least 5 mmHg revealed an AUC of 0.51 and 0.52, respectively. CONCLUSION The study confirms that CPAP therapy for sleep apnea has a mild BP lowering effect. Although this effect is slightly higher in patients with above-average AHI, neither AHI nor ESS can be used to define threshold values predicting a BP decrease at least 5 mmHg.
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Affiliation(s)
- Maximilian Seidel
- Medical Department I, University Hospital Marien Hospital Herne, Ruhr-University Bochum, Hölkeskampring 40, 44625 Herne
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Lai K, Wang X, Cao C. A Continuous Non-Invasive Blood Pressure Prediction Method Based on Deep Sparse Residual U-Net Combined with Improved Squeeze and Excitation Skip Connections. SENSORS (BASEL, SWITZERLAND) 2024; 24:2721. [PMID: 38732827 PMCID: PMC11086107 DOI: 10.3390/s24092721] [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: 03/10/2024] [Revised: 04/09/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024]
Abstract
Arterial blood pressure (ABP) serves as a pivotal clinical metric in cardiovascular health assessments, with the precise forecasting of continuous blood pressure assuming a critical role in both preventing and treating cardiovascular diseases. This study proposes a novel continuous non-invasive blood pressure prediction model, DSRUnet, based on deep sparse residual U-net combined with improved SE skip connections, which aim to enhance the accuracy of using photoplethysmography (PPG) signals for continuous blood pressure prediction. The model first introduces a sparse residual connection approach for path contraction and expansion, facilitating richer information fusion and feature expansion to better capture subtle variations in the original PPG signals, thereby enhancing the network's representational capacity and predictive performance and mitigating potential degradation in the network performance. Furthermore, an enhanced SE-GRU module was embedded in the skip connections to model and weight global information using an attention mechanism, capturing the temporal features of the PPG pulse signals through GRU layers to improve the quality of the transferred feature information and reduce redundant feature learning. Finally, a deep supervision mechanism was incorporated into the decoder module to guide the lower-level network to learn effective feature representations, alleviating the problem of gradient vanishing and facilitating effective training of the network. The proposed DSRUnet model was trained and tested on the publicly available UCI-BP dataset, with the average absolute errors for predicting systolic blood pressure (SBP), diastolic blood pressure (DBP), and mean blood pressure (MBP) being 3.36 ± 6.61 mmHg, 2.35 ± 4.54 mmHg, and 2.21 ± 4.36 mmHg, respectively, meeting the standards set by the Association for the Advancement of Medical Instrumentation (AAMI), and achieving Grade A according to the British Hypertension Society (BHS) Standard for SBP and DBP predictions. Through ablation experiments and comparisons with other state-of-the-art methods, the effectiveness of DSRUnet in blood pressure prediction tasks, particularly for SBP, which generally yields poor prediction results, was significantly higher. The experimental results demonstrate that the DSRUnet model can accurately utilize PPG signals for real-time continuous blood pressure prediction and obtain high-quality and high-precision blood pressure prediction waveforms. Due to its non-invasiveness, continuity, and clinical relevance, the model may have significant implications for clinical applications in hospitals and research on wearable devices in daily life.
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Affiliation(s)
- Kaixuan Lai
- The Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710048, China; (K.L.); (X.W.)
- The Printing and Packaging Engineering Technology Research Center of Shaanxi Province, Xi’an 710048, China
| | - Xusheng Wang
- The Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710048, China; (K.L.); (X.W.)
- The Printing and Packaging Engineering Technology Research Center of Shaanxi Province, Xi’an 710048, China
| | - Congjun Cao
- The Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi’an University of Technology, Xi’an 710048, China; (K.L.); (X.W.)
- The Printing and Packaging Engineering Technology Research Center of Shaanxi Province, Xi’an 710048, China
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Kario K, Tomitani N, Wang TD, Park S, Li Y, Shin J, Tsoi K, Chen CH, Cheng HM, Siddique S, Turana Y, Buranakitjaroen P, Van Huynh M, Nailes J, Sison J, Soenarta AA, Sogunuru GP, Sukonthasarn A, Tay JC, Teo BW, Verma N, Zhang Y, Schlaich M, Nagai M, Fujiwara T, Hoshide S, Chia YC, Wang JG. Home blood pressure-centered approach - from digital health to medical practice: HOPE Asia Network consensus statement 2023. Hypertens Res 2023; 46:2561-2574. [PMID: 37605071 DOI: 10.1038/s41440-023-01397-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/20/2023] [Accepted: 07/12/2023] [Indexed: 08/23/2023]
Abstract
Recent innovations in digital technology have enabled the simultaneous accumulation, and the linking and analysis of time-series big data relating to several factors that influence blood pressure (BP), including biological indicators, physical activity, and environmental information. Various approaches can be used to monitor BP: in the office/clinic; at home; 24-h ambulatory recording; or with wearable and cuffless devices. Of these, home BP monitoring is a reliable and convenient method, and is recommended for hypertension management by current national and international guidelines. This recommendation is based on evidence showing that home BP is an important predictor of cardiovascular, cerebrovascular and kidney disease in patients with hypertension. In addition, lifetime personalized health record (PHR)-based home BP with telemonitoring combined with co-interventions has been shown to lower BP more effectively than the traditional approach based on office BP. Thus, home BP represents a key metric for personalized anticipation medicine, from digital healthcare to digital medicine. This paper summarizes the latest evidence on home BP monitoring and proposes a Hypertension Cardiovascular Outcome Prevention and Evidence in Asia (HOPE Asia) Network consensus on a home BP-centered approach to the management of hypertension.
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Affiliation(s)
- Kazuomi Kario
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan.
| | - Naoko Tomitani
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Tzung-Dau Wang
- Cardiovascular Center and Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei City, Taiwan
- Division of Hospital Medicine, Department of Internal Medicine, National Taiwan University Hospital, Taipei City, Taiwan
| | - Sungha Park
- Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University Health System, Seoul, South Korea
| | - Yan Li
- Centre for Epidemiological Studies and Clinical Trials and Center for Vascular Evaluations, Shanghai Key Lab of Hypertension, Shanghai Institute of Hypertension, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jinho Shin
- Faculty of Cardiology Service, Hanyang University Medical Center, Seoul, South Korea
| | - Kelvin Tsoi
- JC School of Public Health and Primary Care, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Chen-Huan Chen
- Department of Internal Medicine, National Yang Ming Chiao Tung University College of Medicine, Taipei, Taiwan
| | - Hao-Min Cheng
- Institute of Public Health and Community Medicine Research Center, National Yang Ming Chiao Tung University School of Medicine, Taipei, Taiwan
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Ph.D. Program of Interdisciplinary Medicine (PIM), National Yang Ming Chiao Tung University College of Medicine, Taipei, Taiwan
- Division of Faculty Development, Department of Medical Education, Taipei Veterans General Hospital, Taipei, Taiwan
| | | | - Yuda Turana
- Department of Neurology. School of Medicine and Health Sciences, Atma Jaya Catholic University of Indonesia, Jakarta, Indonesia
| | - Peera Buranakitjaroen
- Division of Hypertension, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Minh Van Huynh
- Department of Internal Medicine, University of Medicine and Pharmacy, Hue University, Hue City, Vietnam
| | - Jennifer Nailes
- Department of Preventive and Community Medicine and Research Institute for Health Sciences, University of the East Ramon Magsaysay Memorial Medical Center Inc., Quezon City, Philippines
| | - 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, Harapan Kita, Jakarta, Indonesia
| | - Guru Prasad Sogunuru
- Fortis Hospitals, Chennai, Tamil Nadu, 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
| | - Narsingh Verma
- Department of Physiology, 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
| | - Markus Schlaich
- Dobney Hypertension Centre, Medical School - Royal Perth Hospital Unit and Royal Perth Hospital Research Foundation, The University of Western Australia, Perth, WA, Australia
| | - Michiaki Nagai
- Department of Internal Medicine, General Medicine and Cardiology, Hiroshima City Asa Hospital, Hiroshima, Japan
| | - Takeshi Fujiwara
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Satoshi Hoshide
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Yook-Chin Chia
- Department of Medical Sciences, School of Medical and Life Sciences, Sunway University, Bandar Sunway, Selangor, Malaysia
- Department of Primary Care Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - 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
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Liu H, Liang H, Yu X, Han Y, Wang G, Yan M, Wang W, Li S. A study on the immediate effects of enhanced external counterpulsation on physiological coupling. Front Neurosci 2023; 17:1197598. [PMID: 37351421 PMCID: PMC10282182 DOI: 10.3389/fnins.2023.1197598] [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: 03/31/2023] [Accepted: 05/22/2023] [Indexed: 06/24/2023] Open
Abstract
Introduction Enhanced external counterpulsation (EECP) is a non-invasive assisted circulation technique for its clinical application in the rehabilitation and management of ischemic cardiovascular and cerebrovascular diseases, which has complex physiological and hemodynamic effects. However, the effects of EECP on the coupling of physiological systems are still unclear. We aimed to investigate the immediate effects of EECP on the coupling between integrated physiological systems such as cardiorespiratory and cardiovascular systems. Methods Based on a random sham-controlled design, simultaneous electrocardiography, photoplethysmography, bio-electrical impedance, and continuous hemodynamic data were recorded before, during and after two consecutive 30 min EECP in 41 healthy adults. Physiological coupling strength quantified by phase synchronization indexes (PSI), hemodynamic measurements and heart rate variability indices of 22 subjects (female/male: 10/12; age: 22.6 ± 2.1 years) receiving active EECP were calculated and compared with those of 19 sham control subjects (female/male: 7/12; age: 23.6 ± 2.5 years). Results Immediately after the two consecutive EECP interventions, the physiological coupling between respiratory and cardiovascular systems PSIRES-PTT (0.34 ± 0.14 vs. 0.49 ± 0.17, P = 0.002), the physiological coupling between cardiac and cardiovascular systems PSIIBI-PTT (0.41 ± 0.14 vs. 0.52 ± 0.16, P = 0.006) and the total physiological coupling PSItotal (1.21 ± 0.35 vs. 1.57 ± 0.49, P = 0.005) in the EECP group were significantly lower than those before the EECP intervention, while the physiological coupling indexes in the control group did not change significantly (P > 0.05). Conclusion Our study provides evidence that the PSI is altered by immediate EECP intervention. We speculate that the reduced PSI induced by EECP may be a marker of disturbed physiological coupling. This study provides a new method for exploring the mechanism of EECP action and may help to further optimize the EECP technique.
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Affiliation(s)
- Hongyun Liu
- Research Center for Biomedical Engineering, Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China
- Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Beijing, China
| | - Hui Liang
- Department of Hyperbaric Oxygen, First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Xiaohua Yu
- Research Center for Biomedical Engineering, Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China
- Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Beijing, China
| | - Yi Han
- Research Center for Biomedical Engineering, Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China
- Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Beijing, China
| | - Guojing Wang
- Research Center for Biomedical Engineering, Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China
- Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Beijing, China
| | - Muyang Yan
- Department of Hyperbaric Oxygen, First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Weidong Wang
- Research Center for Biomedical Engineering, Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China
- Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Beijing, China
| | - Shijun Li
- Department of Diagnostic Radiology, First Medical Center, Chinese PLA General Hospital, Beijing, China
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Kario K, Hoshide S, Mogi M. Topics 2023 in Hypertension Research leading to guidelines in Asia. Hypertens Res 2023; 46:1357-1362. [PMID: 37271784 DOI: 10.1038/s41440-023-01285-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 04/05/2023] [Indexed: 06/06/2023]
Affiliation(s)
- Kazuomi Kario
- Division of Cardiovascular Medicine, Jichi Medical University School of Medicine, Tochigi, Japan.
| | - Satoshi Hoshide
- Division of Cardiovascular Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Masaki Mogi
- Department of Pharmacology, Ehime University Graduate School of Medicine, Ehime, Japan
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Misaka T, Yoshihisa A, Yokokawa T, Takeishi Y. Effects of continuous positive airway pressure on very short-term blood pressure variability associated with sleep-disordered breathing by pulse transit time-based blood pressure measurements. J Hypertens 2023; 41:733-740. [PMID: 36883467 DOI: 10.1097/hjh.0000000000003395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
BACKGROUND Blood pressure (BP) variability (BPV) is a predictor of cardiovascular outcomes independently of BP absolute values. We previously reported that pulse transit time (PTT) enables monitoring beat-to-beat BP, identifying a strong relationship between the extent of very short-term BPV and the severity of sleep-disordered breathing (SDB). Here, we investigated the effects of continuous positive airway pressure (CPAP) on very short-term BPV. METHODS We studied 66 patients (mean age 62 years old, 73% male) with newly diagnosed SDB who underwent full polysomnography on two consecutive days for diagnosis (baseline) and CPAP, together with PTT-driven BP continuous recording. PTT index was defined as the average number of acute transient rises in BP (≥12 mmHg) within 30 s/h. RESULTS CPAP treatment effectively improved SDB parameters, and attenuated PTT-based BP absolute values during the night-time. Very short-term BPV that includes PTT index and standard deviation (SD) of systolic PTT-BP was significantly reduced by CPAP therapy. The changes in PTT index from baseline to CPAP were positively correlated with the changes in apnea-hypopnea index, obstructive apnea index (OAI), oxygen desaturation index, minimal SpO 2 , and mean SpO 2 . Multivariate regression analysis revealed that changes in OAI and minimal SpO 2 , as well as heart failure, were the independent factors in determining the reduction of PTT index following CPAP. CONCLUSION PTT-driven BP monitoring discovered the favorable effects of CPAP on very short-term BPV associated with SDB events. Targeting very short-term BPV may be a novel approach to identifying individuals who experience greater benefits from CPAP.
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Affiliation(s)
| | - Akiomi Yoshihisa
- Department of Cardiovascular Medicine
- Department of Clinical Laboratory Sciences, Fukushima Medical University, Fukushima, Japan
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Short- to long-term blood pressure variability: Current evidence and new evaluations. Hypertens Res 2023; 46:950-958. [PMID: 36759660 DOI: 10.1038/s41440-023-01199-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 01/05/2023] [Accepted: 01/19/2023] [Indexed: 02/11/2023]
Abstract
Increased blood pressure (BP) variability and the BP surge have been reported to be associated with increased cardiovascular risk independently of BP levels and can also be a trigger of cardiovascular events. There are multiple types of BP variation: beat-to-beat variations related to breathing and the autonomic nervous system, diurnal BP variation and nocturnal dipping related to sleep and physical activity over a 24-hr period, day-to-day BP variability with anomalous readings within a several-day period, visit-to-visit BP variability between outpatient visits, and seasonal variations. BP variability is also associated with the progression to hypertension from prehypertension and the progression of chronic kidney disease and cognitive impairments. Our research group proposed the "resonance hypothesis of blood pressure surge" as a new etiological hypothesis of BP variability and surges; i.e., the concept that when the time phases of surges and hypertension-inducing environmental influences coincide, resonance occurs and is amplified into a larger "dynamic surge" that triggers the onset of cardiovascular disease. New devices to assess BP variability as well as new therapeutic interventions to reduce BP variability are being developed. Although there are still issues to be addressed (including measurement accuracy), cuffless devices and information and communication technology (ICT)-based BP monitoring devices have been developed and validated. These new devices will be useful for the individualized optimal management of BP. However, evidence regarding the usefulness of therapeutic interventions to control BP variability is still lacking.
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Narita K, Hoshide S, Kario K. The role of blood pressure management in stroke prevention: current status and future prospects. Expert Rev Cardiovasc Ther 2022; 20:829-838. [PMID: 36245101 DOI: 10.1080/14779072.2022.2137490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/14/2022] [Indexed: 10/31/2022]
Abstract
INTRODUCTION Stroke is the second-leading cause of death worldwide and the second-leading cause of disability-adjusted life-years. It is well known that hypertension is a significant risk factor for cardiovascular events, including stroke. AREAS COVERED Recent interventional trials have demonstrated the superiority of intensive blood pressure (BP) control for prevention of cardiovascular events compared to standard BP control. Notably, in the Strategy of Blood Pressure Intervention in Elderly Hypertensive Patients (STEP) trial, intensive BP control showed superiority in the prevention of stroke events in elderly hypertensive patients. Novel medications such as angiotensin receptor-neprilysin inhibitors and sodium glucose cotransporter 2 inhibitors have the potential to suppress various CVD events including stroke. Non-pharmacological antihypertensive therapies such as renal denervation have demonstrated BP-lowering effects and may be useful for stroke prevention. Additionally, new methods and systems of BP monitoring including various kinds of nighttime BP measurement devices, wearable devices, and methods using information and communication technology can be used to assess the pathophysiology of BP variability as a risk factor and an event trigger of stroke incidence. EXPERT OPINION Novel therapies and new technologies for BP evaluation strongly support the development of individualized anticipatory medicine, which should be useful for the prevention of stroke.
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Affiliation(s)
- Keisuke Narita
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Satoshi Hoshide
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Kazuomi Kario
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
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Liu H, Yu X, Wang G, Han Y, Wang W. Effects of 24-h acute total sleep deprivation on physiological coupling in healthy young adults. Front Neurosci 2022; 16:952329. [PMID: 36161147 PMCID: PMC9493191 DOI: 10.3389/fnins.2022.952329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 08/22/2022] [Indexed: 11/15/2022] Open
Abstract
Sleep deprivation is associated with dysregulation of the autonomic nervous system, adverse cardiovascular events, cognitive and complex motor performance impairment. Less is known about the effects of acute total sleep deprivation (ATSD) on physiological coupling. We aimed to determine the effects of 24-h ATSD on the physiological coupling between complex subsystems by evaluating the cardiorespiratory, cardiovascular and cortico-cardiac interactions. This study enrolled 38 young healthy participants aged 23.2 ± 2.4 years. Multiple synchronous physiological signals including electrocardiography, photoplethysmography, bio-electrical impedance, electroencephalography, and continuous hemodynamic data, were performed over a baseline night after regular sleep and after a night with 24-h ATSD in the supine position. The magnitude squared coherence, phase synchronization index, and heartbeat evoked potential amplitudes, were obtained from 10-min synchronous physiological recordings to estimate the coupling strength between two time series. Parameters of hemodynamic characteristics and heart rate variability were also calculated to quantify autonomic regulation. Results indicated that the magnitude squared coherence (0.38 ± 0.17 vs. 0.29 ± 0.12, p = 0.015) between respiration and heart rate variability along with the magnitude squared coherence (0.36 ± 0.18 vs. 0.27 ± 0.13, p = 0.012) between respiration and pulse transit time were significantly decreased after 24-h ATSD. There were no significant differences (all p > 0.05) in phase synchronization indices, heartbeat evoked potential amplitudes as well as other analyzed measurements between baseline and 24-h ATSD states. We conclude that exposure to 24-h ATSD appears to weaken the cardiorespiratory and respiratory-cardiovascular coupling strength of young healthy adults. These findings suggest that physiological coupling analysis may serve as a complementary approach for characterizing and understanding the complex effects of sleep deprivation.
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Affiliation(s)
- Hongyun Liu
- Medical Innovation Research Division, Research Center for Biomedical Engineering, Chinese PLA General Hospital, Beijing, China
- Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Beijing, China
- *Correspondence: Hongyun Liu,
| | - Xiaohua Yu
- Medical Innovation Research Division, Research Center for Biomedical Engineering, Chinese PLA General Hospital, Beijing, China
- Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Beijing, China
| | - Guojing Wang
- Medical Innovation Research Division, Research Center for Biomedical Engineering, Chinese PLA General Hospital, Beijing, China
- Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Beijing, China
| | - Yi Han
- Medical Innovation Research Division, Research Center for Biomedical Engineering, Chinese PLA General Hospital, Beijing, China
- Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Beijing, China
| | - Weidong Wang
- Medical Innovation Research Division, Research Center for Biomedical Engineering, Chinese PLA General Hospital, Beijing, China
- Key Laboratory of Biomedical Engineering and Translational Medicine, Ministry of Industry and Information Technology, Beijing, China
- Weidong Wang,
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Kario K, Hoshide S, Mogi M. Digital Hypertension 2023: Concept, hypothesis, and new technology. Hypertens Res 2022; 45:1529-1530. [PMID: 35995860 PMCID: PMC9395854 DOI: 10.1038/s41440-022-00997-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 07/26/2022] [Indexed: 11/26/2022]
Affiliation(s)
- Kazuomi Kario
- Division of Cardiovascular Medicine, Jichi Medical University School of Medicine, Tochigi, Japan.
| | - Satoshi Hoshide
- Division of Cardiovascular Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Masaki Mogi
- Department of Pharmacology, Ehime University Graduate School of Medicine, Ehime, Japan
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12
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Ohishi M. Can pulse transit time-estimated blood pressure become a savior for blood pressure research? Hypertens Res 2022; 45:1070-1071. [PMID: 35422511 DOI: 10.1038/s41440-022-00900-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/07/2022] [Accepted: 03/07/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Mitsuru Ohishi
- Department of Cardiovascular Medicine and Hypertension, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan.
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13
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Kario K. Preface. Curr Hypertens Rev 2022. [DOI: 10.2174/157340211801220607103646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kazuomi Kario
- Division of Cardiovascular Medicine,
Department of Medicine,
Jichi Medical University School of Medicine (JMU). 3311-1,
Yakushiji, Shimotsuke, Tochigi, 329-0498, JAPAN
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