keyword
MENU ▼
Read by QxMD icon Read
search

Heart problems

keyword
https://www.readbyqxmd.com/read/28212327/a-robust-random-forest-based-approach-for-heart-rate-monitoring-using-photoplethysmography-signal-contaminated-by-intense-motion-artifacts
#1
Yalan Ye, Wenwen He, Yunfei Cheng, Wenxia Huang, Zhilin Zhang
The estimation of heart rate (HR) based on wearable devices is of interest in fitness. Photoplethysmography (PPG) is a promising approach to estimate HR due to low cost; however, it is easily corrupted by motion artifacts (MA). In this work, a robust approach based on random forest is proposed for accurately estimating HR from the photoplethysmography signal contaminated by intense motion artifacts, consisting of two stages. Stage 1 proposes a hybrid method to effectively remove MA with a low computation complexity, where two MA removal algorithms are combined by an accurate binary decision algorithm whose aim is to decide whether or not to adopt the second MA removal algorithm...
February 16, 2017: Sensors
https://www.readbyqxmd.com/read/28212053/transthoracic-echocardiography-pitfalls-and-limitations-as-delineated-at-cardiac-ct-and-mr-imaging
#2
Sachin B Malik, Natalie Chen, Rex A Parker, Joe Y Hsu
Transthoracic echocardiography ( TTE transthoracic echocardiography ) is a critical tool in the field of clinical cardiology. It often serves as one of the first-line imaging modalities in the evaluation of cardiac disease owing to its low cost, portability, widespread availability, lack of ionizing radiation, and ability to evaluate both anatomy and function of the heart. Consequently, a large majority of patients undergoing a cardiac computed tomography (CT) or magnetic resonance (MR) imaging examination will have a TTE transthoracic echocardiography available for review...
February 17, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28211639/the-use-of-on-line-heart-cutting-high-performance-liquid-chromatography-coupled-with-linear-ion-trap-mass-spectrometry-in-the-identification-of-impurities-in-vidarabine-monophosphate
#3
Hang Wang, Tongzhou Xu, Jiaojian Yuan
It is difficult to identify unknown impurities in nucleotide analogues by mass spectrometry because mass-spectrometry-incompatible mobile phases need to be used to separate the major ingredient from impurities. In this study, vidarabine monophosphate was selected, and unknown impurities were identified by online heart-cutting two-dimensional high performance liquid chromatography and linear ion trap mass spectrometry. The one dimensional reversed phase column was filled with a mobile phase containing non-volatile salt...
February 17, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28208117/percutaneous-transcatheter-therapies-for-the-management-of-left-ventricular-assist-device-complications
#4
Rohan J Kalathiya, Jonathan Grinstein, Nir Uriel, Atman P Shah
Heart failure is a growing epidemic in the United States and throughout the world. The utilization of continuous-flow left ventricular assist devices (LVADs) has greatly increased over the last decade. In addition, a limited supply of organ donors has led to a rise in the use, and duration, of LVADs for destination therapy. The increased use of LVAD therapy has led to the observation of mechanical complications such as device thrombosis, de novo aortic insufficiency, and outflow graft stenosis, all of which are associated with prolonged LVAD support...
February 15, 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28198130/psychosocial-predictors-of-medication-adherence-in-pediatric-heart-and-lung-organ-transplantation
#5
Michael O Killian
Few studies have identified the psychosocial characteristics of those children and their families associated with future non-adherence to immunosuppressive medications following a heart or lung transplant. UNOS data and medical records information were used to test the association between patient and family psychosocial characteristics and medication adherence. Medication adherence outcomes were obtained using the physician assessments in the UNOS data and measured through patient-level standard deviation scores of immunosuppressive medication blood levels...
February 15, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28190951/allostatic-load-as-a-complex-clinical-construct-a-case-based-computational-modeling-approach
#6
J Galen Buckwalter, Brian Castellani, Bruce McEwen, Arun S Karlamangla, Albert A Rizzo, Bruce John, Kyle O'Donnell, Teresa Seeman
Allostatic load (AL) is a complex clinical construct, providing a unique window into the cumulative impact of stress. However, due to its inherent complexity, AL presents two major measurement challenges to conventional statistical modeling (the field's dominant methodology): it is comprised of a complex causal network of bioallostatic systems, represented by an even larger set of dynamic biomarkers; and, it is situated within a web of antecedent socioecological systems, linking AL to differences in health outcomes and disparities...
September 2016: Complexity
https://www.readbyqxmd.com/read/28190530/prevalence-and-characteristics-of-urinary-incontinence-in-a-cohort-of%C3%A2-patients-with-chronic-heart-failure
#7
Kerry Poole, Monica Kerlin, Rochelle Wynne
BACKGROUND: Evidence describing the characteristics of urinary incontinence (UI) in patients with chronic heart failure (CHF), and the impact of this combination of conditions on functional status and quality of life, is limited. OBJECTIVE: The primary aim of this study was to determine the prevalence and characteristics of UI in a cohort of CHF patients. METHODS: A prospective survey of 100 outpatients with CHF was undertaken. RESULTS: There were 43 (65...
February 9, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/28187881/a-clinical-decision-making-mechanism-for-context-aware-and-patient-specific-remote-monitoring-systems-using-the-correlations-of-multiple-vital-signs
#8
Abdur Rahim Mohammad Forkan, Ibrahim Khalil
BACKGROUND AND OBJECTIVES: In home-based context-aware monitoring patient's real-time data of multiple vital signs (e.g. heart rate, blood pressure) are continuously generated from wearable sensors. The changes in such vital parameters are highly correlated. They are also patient-centric and can be either recurrent or can fluctuate. The objective of this study is to develop an intelligent method for personalized monitoring and clinical decision support through early estimation of patient-specific vital sign values, and prediction of anomalies using the interrelation among multiple vital signs...
February 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28187122/overt-and-covert-anxiety-as-a-toxic-factor-in-ischemic-heart-disease-in-women-the-link-between-psychological-factors-and-heart-disease
#9
Alicja Nasiłowska-Barud, Tomasz Zapolski, Małgorzata Barud, Andrzej Wysokiński
BACKGROUND Long-term clinical observations have shown that anxiety disorders influence the etiopathogenesis of ischemic heart disease (IHD) in women. The aim of this study was to determine the characteristics of the structure of overt and covert anxiety, and to examine the impact of the severity of anxiety on five personality traits as described Costa and McCrae. MATERIAL AND METHODS The study involved 50 women aged 37 to 74 years, who were treated because of IHD that was confirmed by angiographic examination of the coronary vessels...
February 10, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28182959/predictors-of-depression-in-outpatients-with-heart-failure-an-observational-study
#10
Lucinda J Graven, Geraldine Martorella, Glenna Gordon, Joan S Grant Keltner, Melinda K Higgins
BACKGROUND: Depression is a common comorbidity of heart failure. Little is known about the influence of heart failure symptomatology and coping resources, such as social support and social problem-solving, on depression. OBJECTIVE: To examine whether individual and clinical characteristics, heart failure symptomatology, and the subcomponents of social support and social problem-solving increase the likelihood of depression in outpatients with heart failure. METHODS: A secondary data analysis of a cross sectional study with 201 outpatients with heart failure was conducted...
February 1, 2017: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/28181900/an-alternative-technique-for-fontan-completion-in-patients-with-widely-separated-connections-of-the-inferior-systemic-veins-to-the-atrial-mass
#11
Giuseppe Pomè, Faker Ghedira, Eitan Keizman
Several surgical approaches for completion of a total cavopulmonary connection have been established for patients with anomalies of systemic venous connection in association with a functionally univentricular heart. We report an alternative technique designed to address the problem of widely separated inferior systemic veins, in which two extracardiac conduits were used. This technique was performed on three patients and yielded excellent short-term results, allowing us to operate on a beating heart with no need for cardioplegic arrest and aortic cross-clamping...
August 30, 2016: Cardiology in the Young
https://www.readbyqxmd.com/read/28181702/cerebrovascular-burden-and-depressive-symptomatology-interrelate-over-18%C3%A2-years-support-for-the-vascular-depression-hypothesis
#12
Rosanna Scott, Daniel Paulson
OBJECTIVE: Potentially incongruent research literatures suggest three divergent hypotheses about depressive symptomatology: (1) symptoms are recurrent; (2) later-life depression results from high cerebrovascular burden (CVB); and (3) depressive symptoms contribute to comorbidities causing vascular burden. Past vascular depression research assumes that later-life depressive symptoms relate uniquely to high CVB and not to prior, recurrent depression. This study examines these divergent hypotheses...
February 9, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28181351/sedation-methods-for-transthoracic-echocardiography-in-children-with-trisomy-21-a-retrospective-study
#13
Jeff Miller, Lili Ding, James Spaeth, Jennifer Lam, Joanna Paquin, Erica Lin, Allison Divanovic, Bi Lian Li, Shankar Baskar, Andreas W Loepke
BACKGROUND: Many children with Trisomy 21 have neurologic or behavioral problems that make it difficult for them to remain still during noninvasive imaging studies, such as transthoracic echocardiograms (TTEcho). Recently, intranasal dexmedetomidine sedation has been introduced for this purpose. However, dexmedetomidine has been associated with bradycardia. Children with Trisomy 21 have been reported to have a higher risk of bradycardia and airway obstruction with sedation or anesthesia compared to children without Trisomy 21...
February 8, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28181041/neurobiological-stress-responses-predict-aggression-in-boys-with-oppositional-defiant-disorder-conduct-disorder-a-1-year-follow-up-intervention-study
#14
Jantiene Schoorl, Sophie van Rijn, Minet de Wied, Stephanie H M van Goozen, Hanna Swaab
To improve outcome for children with antisocial and aggressive behavior, it is important to know which individual characteristics contribute to reductions in problem behavior. The predictive value of a parent training (Parent Management Training Oregon; PMTO), parenting practices (monitoring, discipline, and punishment), and child neurobiological function (heart rate, cortisol) on the course of aggression was investigated. 64 boys with oppositional defiant disorder or conduct disorder (8-12 years) participated; parents of 22 boys took part in PMTO...
February 8, 2017: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/28173820/therapeutic-arthropods-and-other-largely-terrestrial-folk-medicinally-important-invertebrates-a-comparative-survey-and-review
#15
REVIEW
V Benno Meyer-Rochow
Traditional healing methods involving hundreds of insect and other invertebrate species are reviewed. Some of the uses are based on the tenet of "similia similibus" (let likes be cured by likes), but not all non-conventional health promoting practices should be dismissed as superstition or wishful thinking, for they have stood the test of time. Two questions are addressed: how can totally different organ systems in a human possibly benefit from extracts, potions, powders, secretions, ashes, etc. of a single species and how can different target organs, e...
February 7, 2017: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/28170314/heart-disease-mortality-in-the-life-span-study-1950-2008
#16
Ikuno Takahashi, Yukiko Shimizu, Eric J Grant, John Cologne, Kotaro Ozasa, Kazunori Kodama
Based on the findings from the Radiation Effects Research Foundation's studies of the cohort of Japanese atomic bomb survivors, it has been reported that total-body irradiation at 0.5-1.0 Gy could be responsible for increased rates of mortality from broad-based categories of cardiovascular disease (CVD), i.e., stroke and heart disease. However, CVD consists of various subtypes that have potentially different radiation dose responses, as well as subtype-specific risks that have not been fully evaluated. Potential problems with changes in the coding rules for the International Classification of Diseases (ICD) and the underlying causes and trends in CVD mortality in Japan also need to be considered...
February 7, 2017: Radiation Research
https://www.readbyqxmd.com/read/28165823/nanocarriers-as-treatment-modalities-for-hypertension
#17
Tausif Alam, Saba Khan, Bharti Gaba, Md Faheem Haider, Sanjula Baboota, Javed Ali
Hypertension, a worldwide epidemic at present, is not a disease in itself rather it is an important risk factor for serious cardiovascular disorders including myocardial infarction, stroke, heart failure, and peripheral artery disease. Though numerous drugs acting via different mechanism of action are available in the market as conventional formulations for the treatment of hypertension but they face substantial challenges regarding their bioavailability, dosing and associated adverse effects which greatly limit their therapeutic efficacies...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28163429/modified-closed-chamber-sutureless-technique-for-anomalous-pulmonary-venous-connection
#18
Sabarinath Menon, Thomas Mathew, Jayakumar Karunakaran, Baiju Sashidhar Dharan
Visibility continues to be a major problem during repair of obstructed total anomalous pulmonary venous connection (TAPVC) resulting in frequent use of deep hypothermia and low flow bypass. Sutureless technique for primary repair of anomalous pulmonary venous connection is fast becoming popular. In this described modification of sutureless technique through the lateral approach, the left atrium is marsupialized around the common pulmonary venous chamber, except on the right lateral aspect, providing a bloodless field with minimal retraction of heart facilitating the surgery at mild hypothermia...
January 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28163427/rheumatic-heart-disease-screening-current-concepts-and-challenges
#19
REVIEW
Scott Dougherty, Maziar Khorsandi, Philip Herbst
Rheumatic heart disease (RHD) is a disease of poverty, is almost entirely preventable, and is the most common cardiovascular disease worldwide in those under 25 years. RHD is caused by acute rheumatic fever (ARF) which typically results in cumulative valvular lesions that may present clinically after a number of years of subclinical disease. Therapeutic interventions, therefore, typically focus on preventing subsequent ARF episodes (with penicillin prophylaxis). However, not all patients with ARF develop symptoms and not all symptomatic cases present to a physician or are correctly diagnosed...
January 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28162139/clinical-application-of-three-dimensional-printing-to-the-management-of-complex-univentricular-hearts-with-abnormal-systemic-or-pulmonary-venous-drainage
#20
Eimear McGovern, Eoin Kelleher, Aisling Snow, Kevin Walsh, Bassem Gadallah, Shelby Kutty, John M Redmond, Colin J McMahon
In recent years, three-dimensional printing has demonstrated reliable reproducibility of several organs including hearts with complex congenital cardiac anomalies. This represents the next step in advanced image processing and can be used to plan surgical repair. In this study, we describe three children with complex univentricular hearts and abnormal systemic or pulmonary venous drainage, in whom three-dimensional printed models based on CT data assisted with preoperative planning. For two children, after group discussion and examination of the models, a decision was made not to proceed with surgery...
February 6, 2017: Cardiology in the Young
keyword
keyword
7063
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"