keyword
MENU ▼
Read by QxMD icon Read
search

ectopy

keyword
https://www.readbyqxmd.com/read/27875987/biomarkers-of-cardiovascular-injury-and-stress-are-associated-with-increased-frequency-of-ventricular-ectopy-a-population-based-study
#1
Julia Brox Skranes, Gunnar Einvik, Silje Kjeka Namtvedt, Anna Randby, Harald Hrubos-Strøm, Jon Brynildsen, Tor-Arne Hagve, Virend K Somers, Helge Røsjø, Torbjørn Omland
BACKGROUND: Asymptomatic ventricular arrhythmias are common and associated with increased risk of cardiovascular mortality. Cardiac troponins, natriuretic peptides and C-reactive protein (CRP) are also predictive of adverse cardiovascular events in the general population, but limited information is available on the relationship between these biomarkers and ventricular ectopy in a community-based population. The objectives were to evaluate the associations between ventricular ectopic activity and N-terminal pro-B-type natriuretic peptide (NT-proBNP), high sensitivity-troponin I (hs-TnI) and hs-CRP in a community-based setting...
November 22, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27867290/ranolazine-is-an-effective-and-safe-treatment-of-adults-with-symptomatic-premature-ventricular-contractions-due-to-triggered-ectopy
#2
Gary L Murray
Early and delayed afterdepolarizations (EAD/DAD) cause triggered ventricular ectopy. Because ranolazine (RAN) suppresses EAD/DAD, we postulated that RAN might be effective in reducing premature ventricular contractions (PVCs). To assess the effect of RAN in patients with symptomatic PVCs due to triggered ectopy and its safety and tolerability. A total of 59 patients with symptomatic PVCs were identified from full-disclosure Holters. Doses of 500 and 1,000 mg offlabel RAN, daily, were given to 34 and 66% patients, respectively, and repeat Holters were performed prospectively during mean followup of 3...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/27867071/evaluation-of-a-novel-high-resolution-mapping-system-for-catheter-ablation-of-ventricular-arrhythmias
#3
Karthik Viswanathan, Lilian Mantziari, Charles Butcher, Emily Hodkinson, Eric Lim, Habib Khan, Sandeep Panikker, Shouvik Haldar, Julian W E Jarman, David G Jones, Wajid Hussain, John P Foran, Vias Markides, Tom Wong
BACKGROUND: The mapping of ventricular arrhythmias in humans using a mini-basket 64-electrode catheter paired with a novel automatIc mapping system (Rhythmia(TM)) has not been evaluated. OBJECTIVE: To evaluate the safety and efficacy of mapping ventricular arrhythmias and clinical outcomes after ablation using this system. METHODS: Electroanatomic (EA) maps for ventricular arrhythmias were obtained during 20 consecutive procedures in 19 patients (ventricular tachycardia [VT] 12; ventricular ectopy [VE] 7)...
November 17, 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27825535/thyroid-cancer-in-lingual-thyroid-and-thyroglossal-duct-cyst
#4
Giacomo Sturniolo, Francesco Vermiglio, Mariacarla Moleti
Ectopy is the most common embryogenetic defect of the thyroid gland, representing between 48 and 61% of all thyroid dysgeneses. Persistence of thyroid tissue in the context of a thyroglossal duct remnant and lingual thyroid tissue are the most common defects. Although most cases of ectopic thyroid are asymptomatic, any disease affecting the thyroid may potentially involve the ectopic tissue, including malignancies. The prevalence of differentiated thyroid carcinoma in lingual thyroid and thyroglossal duct cyst is around 1% of patients affected with the above thyroid ectopies...
November 4, 2016: Endocrinología y Nutrición: órgano de la Sociedad Española de Endocrinología y Nutrición
https://www.readbyqxmd.com/read/27815173/stable-gastric-pentadecapeptide-bpc-157-and-bupivacaine
#5
Gordana Zivanovic-Posilovic, Diana Balenovic, Ivan Barisic, Dean Strinic, Vasilije Stambolija, Mario Udovicic, Sandra Uzun, Domagoj Drmic, Josipa Vlainic, Martina Lovric Bencic, Aleksandra Sindic, Sven Seiwerth, Predrag Sikiric
Bupivacaine toxicity following accidental overdose still lacks therapeutic solution. However, there are major arguments for testing BPC 157 against bupivacaine toxicity in vivo in rats, in particular, and then finally, in vitro. These are: the lack of any known BPC 157 toxicity, a lifesaving effect via the mitigation of arrhythmias in rats underwent hyperkalemia or digitalis toxicity, the elimination of hyperkalemia and arrhythmias in rats underwent succinylcholine toxicity and finally, the reduction of potassium-induced depolarization in vitro (in HEK293 cells) in severe hyperkalemia...
December 15, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27812021/mechanisms-of-arrhythmogenesis-related-to-calcium-driven-alternans-in-a-model-of-human-atrial-fibrillation
#6
Kelly C Chang, Natalia A Trayanova
The occurrence of atrial fibrillation (AF) is associated with progressive changes in the calcium handling system of atrial myocytes. Calcium cycling instability has been implicated as an underlying mechanism of electrical alternans observed in patients who experience AF. However, the extent to which calcium-induced alternation of electrical activity in the atria contributes to arrhythmogenesis is unknown. In this study, we investigated the effects of calcium-driven alternans (CDA) on arrhythmia susceptibility in a biophysically detailed, 3D computer model of the human atria representing electrical and structural remodeling secondary to chronic AF...
November 4, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27802959/ventricular-ectopy-in-hospitalized-elderly-adults
#7
Mary G Carey, Teri M Kozik, Michele M Pelter, Salah S Al-Zaiti
No abstract text is available yet for this article.
November 2016: American Journal of Critical Care: An Official Publication, American Association of Critical-Care Nurses
https://www.readbyqxmd.com/read/27778458/t-wave-alternans-heart-rate-turbulence-and-ventricular-ectopy-in-standard-versus-daily-hemodialysis-results-from-the-fhn-daily-trial
#8
Rachel M Kaplan, Charles A Herzog, Brett Larive, Haris Subacius, Bruce D Nearing, Richard Verrier, Rod S Passman
BACKGROUND: Hemodialysis (HD) patients are at high risk of sudden cardiac death (SCD). HD 6-times/week (6x/wk) may reduce SCD risk compared to usual 3-times/week HD (3x/wk) by mechanisms unknown. T-wave alternans (TWA), heart rate turbulence (HRT), and ventricular ectopy (VE) are elevated in HD patients, but their response to 6x/wk HD has not been assessed. METHODS: Baseline and 1-year Holter recordings were analyzed from enrollees in the Frequent Hemodialysis Network Daily Trial, a randomized trial comparing 3x/wk to 6x/wk in 245 chronic HD patients...
November 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/27772664/follow-up-of-electrocardiographic-findings-and-arrhythmias-in-patients-with-anomalously-arising-left-coronary-artery-from-the-pulmonary-trunk
#9
Judson A Moore, Antonio G Cabrera, Jeffrey J Kim, Santiago O Valdés, Caridad de la Uz, Christina Y Miyake
Follow-up data and correlation of arrhythmias, electrocardiogram (ECG) changes, and cardiac function in anomalous left coronary artery from the pulmonary trunk or artery have not been previously studied. This is a retrospective single-center review of 44 anomalous left coronary artery from the pulmonary trunk or artery patients diagnosed between 1992 and 2014, at a median age of 3 months (3 days to 13 years). Clinical history, ECG, Holter, and echocardiogram data were reviewed. ECGs were reviewed for contiguous Q-or T-wave inversions, hypertrophy, bundle branch block, and axis deviation...
September 23, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27728077/ventricular-ectopy-in-structurally-normal-heart-response-to-beta-blocker-case-report-of-three-cases
#10
C Guruchaithanya Kumar
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27699086/atrial-fibrillation-the-science-behind-its-defiance
#11
Maureen E Czick, Christine L Shapter, David I Silverman
Atrial fibrillation (AF) is the most prevalent arrhythmia in the world, due both to its tenacious treatment resistance, and to the tremendous number of risk factors that set the stage for the atria to fibrillate. Cardiopulmonary, behavioral, and psychological risk factors generate electrical and structural alterations of the atria that promote reentry and wavebreak. These culminate in fibrillation once atrial ectopic beats set the arrhythmia process in motion. There is growing evidence that chronic stress can physically alter the emotion centers of the limbic system, changing their input to the hypothalamic-limbic-autonomic network that regulates autonomic outflow...
October 2016: Aging and Disease
https://www.readbyqxmd.com/read/27697471/utility-of-retrograde-ureterocelogram-in-management-of-complex-ureterocele
#12
M K Arevalo, J C Prieto, N Cost, G Nuss, B J Brown, L A Baker
INTRODUCTION: Symptomatic pediatric ureterocele has diverse manifestations, making evidence-based management impractical. Thus, detailed visualization of ureterocele anatomy prior to first surgical incision is invaluable. Retrograde ureterocelogram (RUC) is a simple, underutilized radiologic technique that can be performed during cystoscopy. This study sought to determine whether RUC changes surgical management by more accurately depicting the complex ureteral and ureterocele anatomy, compared with renal ultrasound (US) and voiding cystourethrography (VCUG)...
September 17, 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/27634348/prospective-evaluation-of-a-holter-ecg-derived-severity-index-for-screening-of-sleep-disordered-breathing
#13
Christoph Maier, Jörg Friedrich, Hugo Katus, Hartmut Dickhaus
BACKGROUND AND PURPOSE: To prospectively evaluate the applicability of a method to screen overnight Holter-ECGs for sleep disordered breathing (SDB) in an unselected clinical routine Holter sample. METHODS: Holter-ECG recordings in 50 cardiologic inpatients were complemented with nocturnal respiratory polygraphy (PG). The respiratory event index (REI) and apnea/hypopnea index (AHI) from the PG served as a reference for an ECG-derived SDB severity estimate using a previously developed method...
August 4, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27630134/mental-exit-block-escaping-the-pulmonary-veins-in-search-of-new-approaches-to-atrial-fibrillation-management
#14
Matthew C Hyman, David J Callans
No abstract text is available yet for this article.
October 11, 2016: Circulation
https://www.readbyqxmd.com/read/27614378/fibrillatory-pattern-of-dissociated-venous-activity-after-pulmonary-vein-isolation-novel-characteristics-for-remnant-foci-of-a-trigger-ectopy-for-atrial-fibrillation
#15
Masato Okada, Akio Hirata, Kazunori Kashiwase, Yasuharu Takeda, Takayoshi Nemoto, Koshi Matsuo, Keisuke Ueno, Yuji Nishimoto, Ryuta Sugihara, Ayaka Murakami, Yasunori Ueda, Yoshio Yasumura
BACKGROUND: Dissociated pulmonary vein activity (DPVA), defined as isolated intrinsic ectopic beats observed after successful pulmonary vein (PV) isolation, indicates the presence of remnant foci of trigger ectopy but has yet to be extensively studied. We investigated the correlation between DPVA and the PV triggers of atrial fibrillation (AF). METHOD AND RESULTS: Consecutive 110 patients undergoing AF ablation were enrolled. We defined trigger ectopy as documented ectopic foci observed to spontaneously initiate AF...
September 7, 2016: Journal of Cardiology
https://www.readbyqxmd.com/read/27601037/adrenal-ectopy-of-adult-groin-region-a-systematic-review-of-an-unexpected-anatomopathologic-diagnosis
#16
L Senescende, P L Bitolog, E Auberger, A Zarzavadjian Le Bian, M Cesaretti
PURPOSE: Adrenal ectopy is a rare condition, caused by abnormal embryological development of the adrenal glands and testis. This anomaly is asymptomatic and is generally diagnosed in childhood. Most cases of adrenal ectopy of the groin region have been found incidentally during surgery. This review aims to evaluate the incidence of adrenal ectopy of the adult groin region, as well as its short- and long-term significance. METHODS: A systematic literature search was performed using the EMBASE, MEDLINE, PubMed and Cochrane Central databases to identify all studies published until December 2015...
September 6, 2016: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/27595199/ablation-therapy-for-left-atrial-autonomic-modification
#17
REVIEW
Louisa Malcolme-Lawes, Belinda C Sandler, Markus B Sikkel, Phang Boon Lim, Prapa Kanagaratnam
The autonomic nervous system is implicated in the multifactorial pathogenesis of atrial fibrillation (AF) but few studies have attempted neural targeting for therapeutic intervention. We have demonstrated that short bursts of stimulation, at specific sites of left atrial ganglionated plexi (GPs), trigger fibrillation-inducing atrial ectopy and importantly continuous stimulation of these sites may not induce AV block, the 'conventional' marker used to locate GPs. We have shown that these ectopy-triggering GP (ET-GP) sites are anatomically stable and can be rendered inactive by either ablation at the site or by ablation between the site and the adjacent pulmonary vein (PV)...
August 2016: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/27579717/self-gated-mri-of-multiple-beat-morphologies-in-the-presence-of-arrhythmias
#18
Francisco Contijoch, Srikant Kamesh Iyer, James J Pilla, Paul Yushkevich, Joseph H Gorman, Robert C Gorman, Harold Litt, Yuchi Han, Walter R T Witschey
PURPOSE: Develop self-gated MRI for distinct heartbeat morphologies in subjects with arrhythmias. METHODS: Golden angle radial data was obtained in seven sinus and eight arrhythmias subjects. An image-based cardiac navigator was derived from single-shot images, distinct beat types were identified, and images were reconstructed for repeated morphologies. Image sharpness, contrast, and volume variation were quantified and compared with self-gated MRI. Images were scored for image quality and artifacts...
August 31, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/27521094/ventricular-arrhythmias-in-apparently-normal-hearts-who-needs-an-implantable-cardiac-defibrillator
#19
REVIEW
Alex Y Tan, Kenneth Ellenbogen
Idiopathic ventricular tachycardia is often considered a benign form of ventricular arrhythmia in patients without apparent structural heart disease. However, a subset of patients may develop malignant ventricular arrhythmias and present with syncope and sudden cardiac arrest. Survivors of cardiac arrest are candidates for implantable cardiac defibrillators (ICDs). The indications for ICDs in patients with less than a full-blown cardiac arrest presentation but with electrocardiographically high-risk ectopy features remain uncertain...
September 2016: Cardiac Electrophysiology Clinics
https://www.readbyqxmd.com/read/27516456/novel-cpvt-associated-calmodulin-mutation-in-calm3-calm3-a103v-activates-arrhythmogenic-ca-waves-and-sparks
#20
Nieves Gomez-Hurtado, Nicole J Boczek, Dmytro O Kryshtal, Christopher N Johnson, Jennifer Sun, Florentin R Nitu, Razvan L Cornea, Walter J Chazin, Melissa L Calvert, David J Tester, Michael J Ackerman, Björn C Knollmann
BACKGROUND: Calmodulin (CaM) mutations are associated with severe forms of long QT syndrome and catecholaminergic polymorphic ventricular tachycardia (CPVT). CaM mutations are found in 13% of genotype-negative long QT syndrome patients, but the prevalence of CaM mutations in genotype-negative CPVT patients is unknown. Here, we identify and characterize CaM mutations in 12 patients with genotype-negative but clinically diagnosed CPVT. METHODS AND RESULTS: We performed mutational analysis of CALM1, CALM2, and CALM3 gene-coding regions, in vitro measurement of CaM-Ca(2+) (Ca)-binding affinity, ryanodine receptor 2-CaM binding, Ca handling, L-type Ca current, and action potential duration...
August 2016: Circulation. Arrhythmia and Electrophysiology
keyword
keyword
112425
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"