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Development and Reliability of Retinal Arteriolar Central Light Reflex Quantification System: A New Approach for Severity Grading

A. Bhuiyan, C. Y. Cheung, S. Frost, E. Lamoureux, P. Mitchell, Y. Kanagasingam, T. Y. Wong
2014 Investigative Ophthalmology and Visual Science  
In the multivariate model, a higher CRR was associated with elevated mean arterial blood pressure (per 10 mm Hg increase) (b ¼ 0.017, P < 0.001). CONCLUSIONS.  ...  To describe the methodology and assess the reliability of novel computer-based semiautomated software that quantifies retinal arteriolar central light reflex (CR) from digital retinal photographs.  ...  We also found that elevated blood pressure is significantly associated with higher CRR, which may further validate the method for assessing the link between retinal vascular changes and hypertension.  ... 
doi:10.1167/iovs.14-14125 pmid:25358734 fatcat:aqojnlcf7nfodeaxtrpncby4da

Using Regular Expressions to Abstract Blood Pressure and Treatment Intensification Information from the Text of Physician Notes

A. Turchin, N. S. Kolatkar, R. W. Grant, E. C. Makhni, M. L. Pendergrass, J. S. Einbinder
2006 JAMIA Journal of the American Medical Informatics Association  
The software processed 370 Mb of text per hour, and identified elevated blood pressure documented in free text physician notes with sensitivity and specificity of 98%, and precision of 93.2%.  ...  We designed a software tool that employed regular expressions to identify and extract instances of documented blood pressure values and anti-hypertensive treatment intensification from the text of physician  ...  The authors would like to express our gratitude to Dr. Maria Shubina at the Center for Clinical Investigations at the Brigham and Women's Hospital for her advice on statistical evaluation.  ... 
doi:10.1197/jamia.m2078 pmid:16929043 pmcid:PMC1656954 fatcat:i6szb642bjegbhxayghqwrkkli

Ambulatory Blood Pressure Monitoring

Marwah Abdalla
2017 Cardiology Clinics  
Ambulatory blood pressure monitoring (ABPM) can assess out-of clinic blood pressure.  ...  ABPM is an underutilized resource in low and middle-income countries but should be considered as a complimentary strategy to clinic blood pressure measurement for the diagnosis and management of hypertension  ...  Abdalla is supported by HL117323-02S2 from the National Heart, Lung, and Blood Institute at the National Institutes of Health (NIH).  ... 
doi:10.1016/j.ccl.2016.08.012 pmid:27886781 pmcid:PMC5125532 fatcat:zioi2w4yrjfm5fp46gj6ylzwza

A systematic review of the use of computers in the management of hypertension

A. A. Montgomery, T. Fahey
1998 Journal of Epidemiology and Community Health  
Study objective-To assess the eVect of computers and computer-based clinical decision support systems on the management of hypertension. Design-Systematic review of randomised controlled trials.  ...  , feedback on quality of blood pressure control and prescribing information), and outcomes (administration, physician performance and blood pressure control).  ...  (MESH) terms: "computers", "microcomputers", "computer assisted therapy", "ambulatory care", "information system", "expert systems", "hypertension", "blood pressure", "blood pressure determination", and  ... 
doi:10.1136/jech.52.8.520 pmid:9876364 pmcid:PMC1756753 fatcat:oqoyd26yajgp5gieag65pvdpea

Exacerbation of sleep-apnoea related nocturnal blood-pressure fluctuations in hypertensive subjects

C. Planes, M. Leroy, G. Fayet, P. Aegerter, A. Foucher, B. Raffestin
2002 European Respiratory Journal  
The influence of daytime blood pressure (BP) levels and aging on short-term BP variability during sleep in OSAS patients was investigated.  ...  The average values ¡ SD of apnoea-related BP elevations and the values of the frequency distribution of all BP variations during sleep were assessed to estimate short-term BP variability.  ...  on a personal computer using software developed by the authors.  ... 
doi:10.1183/09031936.02.00272202 pmid:12166563 fatcat:kqr2qb4hlzdtjhk474gsljnmom

Alterations in capillary morphology are found in mild blood pressure elevation

Cynthia Cheng, Constantine Daskalakis, Bonita Falkner
2010 Journal of Hypertension  
The study objective was to determine if altered capillary morphology is associated with systolic and/ or diastolic blood pressure (SBP/DBP) in subjects without and with mild blood pressure elevation (SBP  ...  Objectives-Remodeling of small resistance arteries is an early sign of target organ damage in hypertension. Peripheral capillary morphology abnormalities in hypertension are not well-studied.  ...  Acknowledgments Sources of Funding: Funding for this study was provided from NIH 5K23HL72825 and HL051547.  ... 
doi:10.1097/hjh.0b013e32833e113b pmid:20724940 pmcid:PMC2955828 fatcat:jpn532flrfdwjjd5bac4ijy6km

Retinal Microvasculature as a Model to Study the Manifestations of Hypertension

C. Y.-l. Cheung, M. K. Ikram, C. Sabanayagam, T. Y. Wong
2012 Hypertension  
narrowing, one of the early signs of hypertensive retinopathy, computer software was designed to measure retinal vessel caliber in an objective manner.  ...  Relationship of Retinal Vacular Changes to BP Classic Clinical Effects of Hypertension on the Eye Hypertensive retinopathy refers to changes in the retina in response to elevated BP.  ... 
doi:10.1161/hypertensionaha.111.189142 pmid:23045470 fatcat:recy3egn2rgmbjpmeg4ygptjdq

End-systolic pressure-diameter relation of the left ventricle during transient and sustained elevations of blood pressure

Edson Antonio Bregagnollo, Katashi Okoshi, Beatriz Bojikian Matsubara, Paulo José Ferreira Tucci
2000 Arquivos Brasileiros de Cardiologia  
Variations of cardiac loads were done by elevation of blood pressure by mechanical constriction of the aorta.  ...  Objective -To assess the effect of transient and sustained variations in cardiac load on the values of the end-systolic pressure-diameter relation (ESPDR) of the left ventricle.  ...  Marina Politi Okoshi for her support.  ... 
doi:10.1590/s0066-782x2000000700003 pmid:10983017 fatcat:6asehkilpjh7te25idymvbwkfu

Evaluation of left ventricular structures in normotensive and hypertensive subjects by two-dimensional echocardiography: Anthropometric correlates in hypertension

AC Ugwu, CA Okwor, JA Agbo
2008 Internet Journal of Medical Update  
Normal values of left ventricular structures and a linear regression model have been established which could be used in the assessment of morbidity in hypertension.  ...  This study was conducted with the objective to establish a nomogram for some left ventricular structures and their alterations in hypertension.  ...  Complications of hypertension, such as myocardial infarction and stroke, are not directly due to elevated pressures, but due to the resulting structural changes in the heart and blood vessels.  ... 
doi:10.4314/ijmu.v3i2.39861 fatcat:ynulpsjcgvg4xk7rkg65ta3l5i

European Society of Hypertension practice guidelines for ambulatory blood pressure monitoring

Gianfranco Parati, George Stergiou, Eoin O'Brien, Roland Asmar, Lawrence Beilin, Grzegorz Bilo, Denis Clement, Alejandro de la Sierra, Peter de Leeuw, Eamon Dolan, Robert Fagard, John Graves (+22 others)
2014 Journal of Hypertension  
Given the increasing use of ambulatory blood pressure monitoring (ABPM) in both clinical practice and hypertension research, a group of scientists, participating in the European Society of Hypertension  ...  ; ESH, European Society of Hypertension; HBPM, home blood pressure monitoring; NICE, National Institute for Health and Clinical Excellence; OBPM, office blood pressure measurement A mbulatory blood pressure  ...  Conflicts of interest Conflicts of interest declarations can be found on the Journal website,  ... 
doi:10.1097/hjh.0000000000000221 pmid:24886823 fatcat:iv6gmoahkfejbfbyi44m4fzdzy

Effect of Systolic Blood Pressure and Carotid Stiffness on Baroreflex Gain in Elderly Subjects

S. Mukai, M. Gagnon, I. Iloputaife, J. W. Hamner, L. A. Lipsitz
2003 The journals of gerontology. Series A, Biological sciences and medical sciences  
SBP elevation in elderly people may affect the neural or cardiac response to blood pressure fluctuations, independent of the mechanical properties of barosensory regions in the carotid artery.  ...  Future studies should examine the effect of pharmacologic treatment of hypertension on baroreflex gain in elderly people.  ...  Andrew Taylor and Michael Cohen for providing the software for carotid image analysis.  ... 
doi:10.1093/gerona/58.7.m626 pmid:12865478 fatcat:tu4r2kjru5dubesf6ec33eogrq

Plasma chromogranin A. Initial studies in human hypertension

D T O'Connor
1985 Hypertension  
In essential hypertensive subjects (n = 5), short-term suppression of sympathetic outflow with oral guanabenz (4 mg) reduced plasma chromogranin A concentration within 30 to 60 minutes, while the blood  ...  The results suggest that plasma chromogranin A is, at least in part, under neural control and that there may be an excess of exocytotic sympathoadrenal activity in essential hypertension.  ...  Both plasma chromogranin A levels and blood pressure remained suppressed for at least 6 hours after administration of the drug. There was no change in heart rate.  ... 
doi:10.1161/01.hyp.7.3_pt_2.i76 fatcat:dlodr2yhtzatdcnemb4vqmjwr4

Simultaneous Bedside Assessment of Global Cerebral Blood Flow and Effective Cerebral Perfusion Pressure in Patients with Intracranial Hypertension

M. Jägersberg, C. Schaller, J. Boström, B. Schatlo, M. Kotowski, C. Thees
2010 Neurocritical Care  
Methods Twenty-six patients developing intracranial hypertension in the course of traumatic brain injury or subarachnoid hemorrhage were prospectively analyzed using a combined assessment during elevated  ...  Estimation of CCP, the arterial pressure at which cerebral blood flow becomes zero, was performed by synchronized registration of corresponding values of blood flow velocity in the middle cerebral artery  ...  Acknowledgment We would like to thank Asita Sarrafzadeh for her very helpful and essential comments.  ... 
doi:10.1007/s12028-009-9300-2 pmid:20182922 fatcat:iqiwwuqgrrajjph3acc7bhiu2u

Game theory in designing mHealth apps for monitoring hypertension

Antonio Clim, Răzvan Daniel Zota
2019 Management şi Marketing  
The theoretical framework for designing software called Hypertension Management System (HMS) is proposed using underlying principles of game theory by considering patients and doctors as players.  ...  The system is installed in the smartphones of players and its functioning follows the hierarchy of Big Data mining and extraction.  ...  The health sector is being digitised for management of various diseases like hypertension, elevated blood pressure, diabetes, through remote wearable sensors and mobile apps (Alessa, 2018; Kangand, 2015  ... 
doi:10.2478/mmcks-2019-0015 fatcat:asx2biqj6zhuldx4eveobxj2su

Elevated Blood Pressure is Associated with Rarefaction of the Retinal Vasculature in Children

Emil D. Kurniawan, Ning Cheung, Carol Y. Cheung, Wan Ting Tay, Seang Mei Saw, Tien Yin Wong
2012 Investigative Ophthalmology and Visual Science  
The potential of retinal fractal analysis as a novel tool to assess the risk of hypertensive ocular and systemic vascular diseases deserves further investigation.  ...  In this study, we examined the relationship between blood pressure and retinal D f in a population of healthy young children, in which the confounding effects of systemic and ocular diseases are minimal  ... 
doi:10.1167/iovs.11-8835 pmid:22205607 fatcat:7afu7nhnw5dw3jyie5nsjz4ky4
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