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https://www.readbyqxmd.com/read/28109132/echocardiographic-assessment-of-left-ventricular-function-in-healthy-horses-and-in-horses-with-heart-disease-using-pulsed-wave-tissue-doppler-imaging
#1
T R Koenig, K J Mitchell, C C Schwarzwald
BACKGROUND: Assessment of left ventricular (LV) function by tissue Doppler imaging (TDI) is not well established in horses with heart disease. OBJECTIVES: To describe the use of pulsed-wave (PW) TDI for the assessment of LV function, establish reference intervals, investigate effects of mitral regurgitation (MR), aortic regurgitation (AR), and primary myocardial disease (MD), and provide proof of concept for the use of PW TDI in Warmblood horses with heart disease...
January 21, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28108860/early-cardioversion-in-atrial-fibrillation-earlier-is-better-but-not-always-and-maybe-not-immediately
#2
REVIEW
Paloma G Piña, Alexandru B Chicos
Atrial fibrillation (AF) is the most common cardiac arrhythmia in humans. One of its important features is the tendency to become more persistent over time, even in the absence of underlying progressive heart disease. Conversion and maintenance of sinus rhythm by pharmacological or electrical methods become increasingly difficult the longer the arrhythmia persists. Electrical, mechanical, structural, and autonomic remodeling processes have been implicated in the mechanisms of AF initiation, perpetuation, and progression...
January 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/28108756/left-ventricular-noncompaction-cardiomyopathy-in-pediatric-patients-a-case-series-of-a-clinically-heterogeneous-disease
#3
Umang Gupta, Pooja Makhija
Left ventricular noncompaction is a rare form of cardiomyopathy, which results from multiple trabeculations in the left ventricular myocardium. The clinical presentation is highly variable, and spectrum includes asymptomatic patients diagnosed during family screening on one end to patients with depressed systolic function, heart failure, thromboembolic complications, and cardiac arrhythmias on the other (Kim et al in J Am Coll Cardiol 53: 2009, 2009). Further, the progression of the condition is highly variable...
January 21, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28107894/heart-rate-variability-biofeedback-therapy-and-graded-exercise-training-in-management-of-chronic-fatigue-syndrome-an-exploratory-pilot-study
#4
Petra Windthorst, Nazar Mazurak, Marvin Kuske, Arno Hipp, Katrin E Giel, Paul Enck, Andreas Nieß, Stephan Zipfel, Martin Teufel
OBJECTIVE: Chronic fatigue syndrome (CFS) is characterised by persistent fatigue, exhaustion, and several physical complaints. Research has shown cognitive behavioural therapy (CBT) and graded exercise training (GET) to be the most effective treatments. In a first step we aimed to assess the efficacy of heart rate variability biofeedback therapy (HRV-BF) as a treatment method comprising cognitive and behavioural strategies and GET in the pilot trial. In a second step we aimed to compare both interventions with regard to specific parameters...
February 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28107892/generalized-hypervigilance-in-fibromyalgia-normal-interoceptive-accuracy-but-reduced-self-regulatory-capacity
#5
Silke Rost, Dimitri M L Van Ryckeghem, André Schulz, Geert Crombez, Claus Vögele
OBJECTIVE: The factors underlying the aetiology of fibromyalgia (FM) are largely unknown. According to the generalized hypervigilance hypothesis (GHH), FM patients show excessive attention towards pain stimuli and other sensory events, thereby increasing pain perception and dysfunctional behaviour. We tested this notion by assessing interoceptive accuracy (IA) in FM patients and matched healthy controls. We also tested the hypothesis that FM is characterized by reduced self-regulatory capacity as indexed by heart rate variability (HRV)...
February 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28107887/associations-between-positive-emotional-well-being-and-stress-induced-myocardial-ischemia-well-being-scores-predict-exercise-induced-ischemia
#6
Jacob P Feigal, Stephen H Boyle, Zainab Samad, Eric J Velazquez, Jennifer L Wilson, Richard C Becker, Redford B Williams, Cynthia M Kuhn, Thomas L Ortel, Joseph G Rogers, Christopher M O'Connor, Wei Jiang
OBJECTIVE: Depressive symptoms have been associated with myocardial ischemia induced by mental (MSIMI) and exercise (ESIMI) stress in clinically stable ischemic heart disease (IHD) patients, but the association between positive emotions and inducible ischemia is less well characterized. The objective of this study was to examine the associations between ratings of well-being and stress-induced ischemia. METHODS: Subjects were adult patients with documented IHD underwent mental and exercise stress testing for the Responses of Myocardial Ischemia to Escitalopram Treatment (REMIT) trial...
February 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28107380/novel-tools-in-determining-the-physiological-demands-and-nutritional-practices-of-ontario-firerangers-during-fire-deployments
#7
A H Robertson, C Larivière, C R Leduc, Z McGillis, T Eger, A Godwin, M Larivière, S C Dorman
INTRODUCTION: The seasonal profession of wildland fire fighting in Canada requires individuals to work in harsh environmental conditions that are physically demanding. The purpose of this study was to use novel technologies to evaluate the physiological demands and nutritional practices of Canadian FireRangers during fire deployments. METHODS: Participants (n = 21) from a northern Ontario Fire Base volunteered for this study and data collection occurred during the 2014 fire season and included Initial Attack (IA), Project Fire (P), and Fire Base (B) deployments...
2017: PloS One
https://www.readbyqxmd.com/read/28107340/association-of-diabetes-related-complications-with-heart-rate-variability-among-a-diabetic-population-in-the-uae
#8
Ahsan H Khandoker, Haitham M Al-Angari, Kinda Khalaf, Sungmun Lee, Wael Almahmeed, Habiba S Al Safar, Herbert F Jelinek
Microvascular, macrovascular and neurological complications are the key causes of morbidity and mortality among type II diabetes mellitus (T2DM) patients. The aim of this study was to investigate the alterations of cardiac autonomic function of diabetic patients in relation to three types of diabetes-related complications. ECG recordings were collected and analyzed from 169 T2DM patients in supine position who were diagnosed with nephropathy (n = 55), peripheral neuropathy (n = 64) and retinopathy (n = 106) at two hospitals in the UAE...
2017: PloS One
https://www.readbyqxmd.com/read/28106832/plaimos-a-remote-mobile-healthcare-platform-to-monitor-cardiovascular-and-respiratory-variables
#9
Ramses Miramontes, Raúl Aquino, Arturo Flores, Guillermo Rodríguez, Rafael Anguiano, Arturo Ríos, Arthur Edwards
The number of elderly and chronically ill patients has grown significantly over the past few decades as life expectancy has increased worldwide, leading to increased demands on the health care system and significantly taxing traditional health care practices. Consequently, there is an urgent need to use technology to innovate and more constantly and intensely monitor, report and analyze critical patient physiological parameters beyond conventional clinical settings in a more efficient and cost effective manner...
January 19, 2017: Sensors
https://www.readbyqxmd.com/read/28105769/renal-tubular-resistance-is-the-primary-driver-for-loop-diuretic-resistance-in-acute-heart-failure
#10
Jozine M Ter Maaten, Veena S Rao, Jennifer S Hanberg, F Perry Wilson, Lavanya Bellumkonda, Mahlet Assefa, J Sam Broughton, Julie D'Ambrosi, W H Wilson Tang, Kevin Damman, Adriaan A Voors, David H Ellison, Jeffrey M Testani
BACKGROUND: Loop diuretic resistance is a common barrier to effective decongestion in acute heart failure (AHF), and is associated with poor outcome. Specific mechanisms underlying diuretic resistance are currently unknown in contemporary AHF patients. We therefore aimed to determine the relative importance of defects in diuretic delivery vs. renal tubular response in determining diuretic response (DR) in AHF. METHODS AND RESULTS: Fifty AHF patients treated with intravenous bumetanide underwent a 6-h timed urine collection for sodium and bumetanide clearance...
January 19, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28105408/predictors-of-prolonged-mechanical-ventilation-in-pediatric-patients-after-cardiac-surgery-for-congenital-heart-disease
#11
Avisa Tabib, Seyed Ehsan Abrishami, Mohammad Mahdavi, Hojjat Mortezaeian, Ziae Totonchi
BACKGROUND: The duration of mechanical ventilation (MV) is one of the most important clinical factors which predict outcomes in pediatric cardiac surgery. The prolonged mechanical ventilation (PMV) following cardiac surgery is a multifactorial phenomenon and there are conflicts regarding its predictors in pediatric population between different centers. OBJECTIVES: The current study aimed to describe PMV predictors in patients undergoing cardiac surgery for congenital heart disease in a tertiary center for pediatric cardiovascular diseases in Iran...
August 2016: Research in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28104741/recombinant-human-thyroid-stimulating-hormone-versus-thyroid-hormone-withdrawal-in-124i-pet-ct-based-dosimetry-for-131i-therapy-of-metastatic-differentiated-thyroid-cancer
#12
Donika Plyku, Robert F Hobbs, Kevin Huang, Frank Atkins, Carlos Garcia, George Sgouros, Douglas Van Nostrand
PURPOSE: Patients with metastatic differentiated thyroid cancer (DTC) may be prepared using either thyroid stimulating hormone withdrawal (THW) or recombinant human thyroid-stimulating hormone (rhTSH) injections prior to (131)I administration for treatment. The objective of this study was to compare the absorbed dose (D) to the critical organs and tumors determined by (124)I-Positron Emission Tomography/Computed Tomography (PET/CT) based dosimetry for (131)I therapy of metastatic DTC when the same patient was prepared with and imaged after both THW and rhTSH injections...
January 19, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28104480/the-effect-of-spatial-resolution-and-filtering-on-mapping-cardiac-fibrillation
#13
Benjamin King, Andreu Porta-Sánchez, Stéphane Massé, Nima Zamiri, Krishanand Balasundaram, Marjan Kusha, Nicholas Jackson, Shouvik Haldar, Karthikeyan Umapathy, Kumaraswamy Nanthakumar
BACKGROUND: Endocardial mapping tools use variable inter-electrode resolution whilst body surface mapping tools use narrow band pass filtering (BPF) to map fibrillatory mechanisms established by high resolution optical imaging. OBJECTIVES: To study the effect of resolution and BPF on the underlying mechanism being mapped. METHODS: Hearts from 14 healthy New Zealand white rabbits were Langendorff perfused. We studied the effect of spatial resolution and BPF on the location and characterization of rotors, by comparing phase singularities (PS) detected by high resolution un-filtered optical maps (OM), of fibrillating myocardium with decimated and filtered maps with simulated electrode spacing of 2, 5 and 8mm...
January 16, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28104273/physiologically-based-predictive-analytics-using-the-heart-rate-to-systolic-ratio-significantly-improves-the-timeliness-and-accuracy-of-sepsis-prediction-compared-to-sirs
#14
Omar K Danner, Sandra Hendren, Ethel Santiago, Brittany Nye, Prasad Abraham
BACKGROUND: Enhancing the efficiency of diagnosis and treatment of severe sepsis by using physiologically-based, predictive analytical strategies has not been fully explored. We hypothesize assessment of heart-rate-to-systolic-ratio significantly increases the timeliness and accuracy of sepsis prediction after emergency department (ED) presentation. METHODS: We evaluated the records of 53,313 ED patients from a large, urban teaching hospital between January and June 2015...
January 7, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28104071/cardiac-autonomic-dysfunction-and-incidence-of-atrial-fibrillation-results-from-20-years-follow-up
#15
Sunil K Agarwal, Faye L Norby, Eric A Whitsel, Elsayed Z Soliman, Lin Y Chen, Laura R Loehr, Valentin Fuster, Gerardo Heiss, Josef Coresh, Alvaro Alonso
BACKGROUND: Cardiac autonomic perturbations frequently antecede onset of paroxysmal atrial fibrillation (AF). Interventions that influence autonomic inputs to myocardium may prevent AF. However, whether low heart rate or heart rate variability (HRV), which are noninvasive measures of cardiac autonomic dysfunction, are associated with AF incidence is unclear. OBJECTIVES: This study sought to study the association between HRV and risk of AF. METHODS: This study included 11,715 middle-aged adults in the ARIC (Atherosclerosis Risk In Communities) cohort with heart rate and HRV measures obtained from 2-min electrocardiogram recordings performed at baseline (1987 to 1989)...
January 24, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28103812/can-coefficient-of-variation-of-time-domain-analysis-be-valuable-for-detecting-cardiovascular-autonomic-neuropathy-in-young-patients-with-type-1-diabetes-a-case-control-study
#16
Dovile Razanskaite-Virbickiene, Evalda Danyte, Giedre Mockeviciene, Rimante Dobrovolskiene, Rasa Verkauskiene, Rimantas Zalinkevicius
BACKGROUND: Cardiovascular autonomic neuropathy (CAN) increases morbidity and mortality in diabetes through association with a high risk of cardiac arrhythmias and sudden death, possibly related to silent myocardial ischemia. During the sub-clinical stage, CAN can be detected through reduction in heart rate variability (HRV). The aim of our study was to estimate if the time and frequency-domain analysis can be valuable for detecting CAN in young patients with type 1 diabetes mellitus (T1DM)...
January 19, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28103597/psychophysiological-effects-of-a-single-short-and-moderately-bright-room-light-exposure-on-mildly-depressed-geriatric-inpatients-a-pilot-study
#17
Markus Canazei, Wilfried Pohl, Kathrin Bauernhofer, Ilona Papousek, Helmut K Lackner, Harald R Bliem, Josef Marksteiner, Elisabeth M Weiss
BACKGROUND: Light interventions typically exert their mood-related effects during morning bright light exposures over several weeks. Evidence about immediate ambient room light effects on depressed individuals is still sparse. OBJECTIVE: The present study aimed at examining the acute effects of a single moderately bright room light exposure on mood, and behavioural and cardiac stress reactions of mildly depressed geriatric inpatients during a short cognitive stimulation and while resting...
January 20, 2017: Gerontology
https://www.readbyqxmd.com/read/28103546/quantifying-net-synergy-redundancy-of-spontaneous-variability-regulation-via-predictability-and-transfer-entropy-decomposition-frameworks
#18
Alberto Porta, Vlasta Bari, Beatrice De Maria, Anielle C M Takahashi, Stefano Guzzetti, Riccardo Colombo, Aparecida M Catai, Ferdinando Raimondi, Luca Faes
OBJECTIVE: Indexes assessing the balance between redundancy and synergy were hypothesized to be helpful in characterizing cardiovascular control from spontaneous beat-to-beat variations of heart period (HP), systolic arterial pressure (SAP) and respiration (R). METHODS: Net redundancy/synergy indexes were derived according to predictability and transfer entropy decomposition strategies via a multivariate linear regression approach. Indexes were tested in two protocols inducing modifications of the cardiovascular regulation via baroreflex loading/unloading (i...
January 17, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28103324/use-of-proton-pump-inhibitors-predicts-heart-failure-and-death-in-patients-with-coronary-artery-disease
#19
Ana María Pello Lázaro, Carmen Cristóbal, Juan Antonio Franco-Peláez, Nieves Tarín, Álvaro Aceña, Rocío Carda, Ana Huelmos, María Luisa Martín-Mariscal, Jesús Fuentes-Antras, Juan Martínez-Millá, Joaquín Alonso, Óscar Lorenzo, Jesús Egido, Lorenzo López-Bescós, José Tuñón
OBJECTIVES: Proton-pump inhibitors (PPIs) seem to increase the incidence of cardiovascular events in patients with coronary artery disease (CAD), mainly in those using clopidogrel. We analysed the impact of PPIs on the prognosis of patients with stable CAD. METHODS: We followed 706 patients with CAD. Primary outcome was the combination of secondary outcomes. Secondary outcomes were 1) acute ischaemic events (any acute coronary syndrome, stroke, or transient ischaemic attack) and 2) heart failure (HF) or death...
2017: PloS One
https://www.readbyqxmd.com/read/28103258/revisiting-greek-propolis-chromatographic-analysis-and-antioxidant-activity-study
#20
Konstantinos M Kasiotis, Pelagia Anastasiadou, Antonis Papadopoulos, Kyriaki Machera
Propolis is a bee product that has been extensively used in alternative medicine and recently has gained interest on a global scale as an essential ingredient of healthy foods and cosmetics. Propolis is also considered to improve human health and to prevent diseases such as inflammation, heart disease, diabetes and even cancer. However, the claimed effects are anticipated to be correlated to its chemical composition. Since propolis is a natural product, its composition is consequently expected to be variable depending on the local flora alignment...
2017: PloS One
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