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https://www.readbyqxmd.com/read/30294671/marijuana-induced-type-i-brugada-pattern-a-case-report
#1
Pramod Theetha Kariyanna, Apoorva Jayarangaiah, Sudhanva Hegde, Jonathan D Marmur, Perry Wengrofsky, Mena Yacoub, Michael Post, Samy I McFarlane
Marijuana is the most common drug of abuse in the United States. Marijuana acts on cannabinoid receptors CB1, CB2 and another distinct endothelial receptor. Marijuana is known to cause tachycardia, hypotension and hypertension. Various arrhythmias including atrial fibrillation, atrial flutter, II degree AV block, ventricular fibrillation, ventricular tachycardia, asystole and brugada pattern associated with marijuana use have been reported. We here present an interesting case of Type I Brugada pattern in electrocardiography (ECG) in a 36 year old healthy African American male who presented after smoking four joints...
2018: American journal of medical case reports
https://www.readbyqxmd.com/read/30177367/wavelet-leader-multifractal-analysis-of-heart-rate-variability-in-atrial-fibrillation
#2
Kais Gadhoumi, Duc Do, Fabio Badilini, Michele M Pelter, Xiao Hu
BACKGROUND: Accurate and timely detection of atrial fibrillation (AF) episodes is important in primarily and secondary prevention of ischemic stroke and heart-related problems. In this work, heart rate regularity of ECG inter-beat intervals was investigated in episodes of AF and other rhythms using a wavelet leader based multifractal analysis. Our aim was to improve the detectability of AF episodes. METHODS: Inter-beat intervals from 25 ECG recordings available in the MIT-BIH atrial fibrillation database were analysed...
August 23, 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/30177334/modified-positioning-of-a-smartphone-based-single-lead-electrocardiogram-device-improves-detection-of-atrial-flutter
#3
Kevin Rajakariar, Anoop N Koshy, Jithin K Sajeev, Sachin Nair, Louise Roberts, Andrew W Teh
INTRODUCTION: The AliveCor Kardia Mobile (AKM) is a handheld, smartphone based cardiac rhythm monitor that records a lead-I electrocardiogram (ECG). Despite being efficacious for detection of atrial fibrillation (AF), it is unclear whether atrial flutter (AFL) may be misdiagnosed as sinus rhythm due to regular R-R intervals. We hypothesised that generating lead-II tracings through repositioning of the AKM may improve visualisation of flutter waves and clinician diagnosis of AFL compared to traditional lead-I tracings...
September 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/30167809/extended-ecg-monitoring-with-an-implantable-loop-recorder-in-patients-with-cryptogenic-stroke-time-schedule-reasons-for-explantation-and-incidental-findings-results-from-the-track-af-trial
#4
Markus Bettin, Dirk Dechering, Simon Kochhäuser, Niklas Bode, Lars Eckardt, Gerrit Frommeyer, Florian Reinke
BACKGROUND: Implantable loop recorders (ILR) may be used to detect occult atrial fibrillation (AF) in patients with cryptogenic stroke. At present, there has been no description on the incidental findings of stored episodes in these patients. Furthermore, no standard practice has been established with respect to the duration of continued ECG monitoring in these patients. MATERIALS AND METHODS: In the prospective monocentric study (TRACK-AF), a total of 173 patients with cryptogenic stroke received an ILR for detection of AF between November 2010 and December 2014...
August 22, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/30130999/cardiolaminopathies-from-bench-to-bedside-challenges-in-clinical-decision-making-with-focus-on-arrhythmia-related-outcomes
#5
Giuseppe Boriani, Elena Biagini, Matteo Ziacchi, Vincenzo Livio Malavasi, Marco Vitolo, Marisa Talarico, Erminio Mauro, Giulia Gorlato, Giovanna Lattanzi
Lamin A/C gene mutations can be associated with cardiac diseases, usually referred to as "cardiolaminopathies" characterized by arrhythmic disorders and/or left ventricular or biventricular dysfunction up to an overt picture of heart failure. The phenotypic cardiac manifestations of laminopathies are frequently mixed in complex clinical patterns and specifically may include bradyarrhythmias (sinus node disease or atrioventricular blocks), atrial arrhythmias (atrial fibrillation, atrial flutter, atrial standstill), ventricular tachyarrhythmias and heart failure of variable degrees of severity...
August 21, 2018: Nucleus
https://www.readbyqxmd.com/read/30126559/risk-factors-influencing-outcomes-of-atrial-fibrillation-in-allhat
#6
L Julian Haywood, Barry R Davis, Linda B Piller, Lara M Simpson, Alokananda Ghosh, Paula T Einhorn, Charles E Ford, Jeffrey L Probstfield, Elsayed Z Soliman, Jackson T Wright
BACKGROUND AND AIMS: ALLHAT, a randomized, double-blind, active-controlled, multicenter clinical trial of high risk hypertensive participants, compared treatment with an ACE-inhibitor (lisinopril) or calcium channel blocker (amlodipine) with a diuretic (chlorthalidone). Primary outcome was the occurrence of fatal coronary heart disease or nonfatal myocardial infarction. For this report, post-hoc analyses were conducted to determine the contribution of baseline characteristics of participants with or without baseline or incident atrial fibrillation (AF) and atrial flutter (AFL) to stroke, heart failure (HF), coronary heart disease (CHD), and mortality outcomes...
August 2018: Journal of the National Medical Association
https://www.readbyqxmd.com/read/30115368/accurate-detection-of-atrial-fibrillation-and-atrial-flutter-using-the-electrocardiomatrix-technique
#7
Veronica Lee, Gang Xu, Vivian Liu, Peter Farrehi, Jimo Borjigin
BACKGROUND: Atrial fibrillation (AFIB) and atrial flutter (AFL) are two common cardiac arrhythmias that predispose patients to serious medical conditions. There is a need to accurately detect these arrhythmias to prevent diseases and reduce mortality. Apart from accurately detecting these arrhythmias, it is also important to distinguish between AFIB and AFL due to differing clinical treatments. METHODS: In this study, we applied a new technology, the electrocardiomatrix (ECM) invented in our lab, in detecting AFIB and AFL in human patients...
August 11, 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/30093546/eighty-two-year-old-man-with-a-systolic-murmur
#8
Daniel F Kupsky, Karthikeyan Ananthasubramaniam, James Lee
CLINICAL INTRODUCTION: An 82-year-old man with a history of coronary artery bypass surgery, hypertension and small bowel gastrointestinal stromal tumour underwent cardiac risk evaluation prior to surgical resection of his tumour. He was asymptomatic from a cardiovascular perspective, but his activity level was less than four metabolic equivalents. Physical examination was notable for a 2/6 systolic murmur at the apex. ECG showed sinus rhythm. A transthoracic echocardiogram was performed (figure 1 and online supplementary video 1)...
August 9, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/30080938/echocardiographic-diagnosis-of-atrial-flutter-in-a-neonate
#9
Samantha Low, Carmen Kiper, Aimee Armstrong, Clifford L Cua
A pregnant female presented at 37 weeks of gestation in labor. The fetus was noted to be tachycardic on fetal monitor. Postnatally, the male neonate was still noted to be tachycardic with heart rates in the low 200 bpm range. EKG was consistent with tachycardia, but rhythm diagnosis was not definitively made. Echocardiogram with M-mode analysis clearly demonstrated 2:1 atrial to ventricular contraction pattern consistent with atrial flutter. The neonate was subsequently transferred to a tertiary pediatric hospital where the diagnosis of atrial flutter was confirmed...
September 2018: Echocardiography
https://www.readbyqxmd.com/read/30080278/is-proximal-coronary-sinus-involved-in-the-circuit-in-some-cases-of-ecg-typical-atrial-flutter
#10
Antonio De Sisti, Marius Andronache, Pamela Damiano, Roman Eschalier, Manuel Font
AIM: It is commonly conceived that coronary sinus (CS) participates in atrial flutter (AFL) circuit but limited to the fibers surrounding its ostium. We evaluated the involvement of proximal CS in typical AFL. METHODS: Twenty AFL patients underwent entrainment mapping using postpacing interval minus AFL cycle length (PPI-AFL CL) including CS where a decapolar catheter was positioned with proximal bipole 1 cm from the ostium. RESULTS: We compared patients with proximal CS within the circuit (group 1, PPI-AFL CL ≤ 20 ms + concealed entrainment) and those without (group 2, PPI-AFL CL > 20 ms)...
August 6, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/30029778/atrial-fibrillation-observed-on-surface-ecg-can-be-atrial-flutter-or-atrial-tachycardia
#11
Elyar Ghafoori, Nathan Angel, Derek J Dosdall, Rob S MacLeod, Ravi Ranjan
BACKGROUND: Differentiating between atrial fibrillation (AF) and atrial tachycardia (AT) or atrial flutter (AFL) on surface ECG can be challenging. The same problem arises in animal models of AF, in which atrial arrhythmias are induced by pacing or pharmacological intervention with the goal of making mechanistic determinations. Some of these induced arrhythmias can be AFL or AT, even though it might appear as AF on the body-surface ECG based on irregular R-R intervals. We hypothesize that a dominant frequency (DF) analysis of the ECG can differentiate between the two distinct arrhythmias, even when it is not evident by the presence of flutter waves or beat-to-beat regularity when looking at brief recordings...
July 17, 2018: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29982228/contemporary-burden-and-correlates-of-symptomatic-paroxysmal-supraventricular-tachycardia
#12
Alan S Go, Mark A Hlatky, Taylor I Liu, Dongjie Fan, Elisha A Garcia, Sue Hee Sung, Matthew D Solomon
BACKGROUND: Contemporary data about symptomatic paroxysmal supraventricular tachycardia (PSVT) epidemiology are limited. We characterized prevalence and correlates of symptomatic PSVT within a large healthcare delivery system and estimated national PSVT burden. METHODS AND RESULTS: We identified adults with an encounter for potential PSVT between 2010 and 2015 in Kaiser Permanente Northern California, excluding those with prior known atrial fibrillation or atrial flutter...
July 7, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29887428/smart-watches-for-heart-rate-assessment-in-atrial-arrhythmias
#13
Anoop N Koshy, Jithin K Sajeev, Nitesh Nerlekar, Adam J Brown, Kevin Rajakariar, Mark Zureik, Michael C Wong, Louise Roberts, Maryann Street, Jennifer Cooke, Andrew W Teh
BACKGROUND: Despite studies demonstrating the accuracy of smart watches (SW) and wearable heart rate (HR) monitors in sinus rhythm, no data exists regarding their utility in arrhythmias. METHODS: 102 hospitalized patients were evaluated at rest using continuous electrocardiogram (ECG) monitoring with concomitant SW-HR (FitBit, FB, Apple Watch, AW) for 30 min. RESULTS: Across all devices, 38,616 HR values were recorded. Sinus rhythm cohort demonstrated strong agreement for both devices with a low bias (FB & AW Bias = 1 beat)...
September 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29887425/five-year-outcome-and-predictors-of-success-after-second-generation-cryoballoon-ablation-for-treatment-of-symptomatic-atrial-fibrillation
#14
Ersan Akkaya, Alexander Berkowitsch, Sergej Zaltsberg, Harald Greiss, Christian W Hamm, Johannes Sperzel, Malte Kuniss, Thomas Neumann
INTRODUCTION: Data on long-term outcomes of cryoballoon ablation for treatment of atrial fibrillation (AF) are sparse. Here, we report the first 5-year follow-up results and predictors of outcome for pulmonary vein isolation (PVI) using the second-generation cryoballoon (CB-Adv) in patients with symptomatic AF. METHODS AND RESULTS: For this prospective observational study, we enrolled 178 patients with paroxysmal (132/178 [74.2%] patients) or persistent AF who underwent PVI with CB-Adv at our institution during 2012...
September 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29859712/low-population-prevalence-of-atrial-fibrillation-in-rural-uganda-a-community-based-cross-sectional-study
#15
Rahul G Muthalaly, Bruce A Koplan, Alfred Albano, Crystal North, Jeffrey I Campbell, Bernard Kakuhikire, Dagmar Vořechovská, John D Kraemer, Alexander C Tsai, Mark J Siedner
OBJECTIVES: Atrial fibrillation (AF) is a major risk factor for stroke, which is the leading cause of cardiovascular mortality in sub-Saharan Africa. However, there is limited population-based epidemiological data on AF in sub-Saharan Africa. We sought to estimate the prevalence and correlates of AF in rural Uganda. METHODS: We conducted a cross-sectional study using community health fairs in 2015 targeting eight villages in rural Uganda. Study participants completed a medical history, a clinical exam, blood collection, and 12‑lead electrocardiographic (ECG) screening...
November 15, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29858383/coronary-sinus-activation-and-ecg-characteristics-of-roof-dependent-left-atrial-flutter-after-pulmonary-vein-isolation
#16
Ruben Casado Arroyo, Decebal Gabriel Laţcu, Shingo Maeda, Maciej Kubala, Pasquale Santangeli, Fermin Carlos Garcia, Bogdan Enache, Mohammed Eljamili, Tatsuya Hayashi, Erica S Zado, Nadir Saoudi, Francis E Marchlinski
BACKGROUND: The electrocardiographic and intracardiac activation features of left atrial roof-dependent macroreentrant flutter have been incompletely characterized. METHODS: Patients post-pulmonary vein (PV) isolation with roof-dependent atrial flutter based on activation and entrainment mapping were included. ECG and coronary sinus activation were compared with mitral annular (MA) flutter. RESULTS: The roof-dependent left atrial flutter circled the right PVs in 32 of 33 cases...
June 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29801744/factors-influencing-oral-anticoagulation-prescription-for-patients-presenting-to-emergency-departments-with-atrial-fibrillation-and-flutter
#17
Robert J H Miller, Derek S Chew, Saman Rezazadeh, Sheila Klassen, Payam Pournazari, Eddy Lang, F Russell Quinn
Atrial fibrillation and atrial flutter (AF/AFL) are associated with an increased risk of stroke and systemic embolism. However, many patients are not started on guideline-recommended oral anticoagulation (OAC). We determined factors associated with initiation of OAC in eligible patients presenting to emergency departments. This retrospective cohort included patients with electrocardiogram (ECG)-documented AF/AFL presenting to 4 urban emergency departments in 2015. Presenting diagnoses, admission status, and comorbidities were determined by chart review...
June 2018: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/29571848/ischemic-stroke-due-to-embolic-heart-diseases-and-associated-factors-in-benin-hospital-setting
#18
REVIEW
Dieudonné Gnonlonfoun, Constant Adjien, Ronald Gnimavo, Gérard Goudjinou, Corine Hotcho, Jennifer Nyangui Mapaga, Arlos Sowanou, Pupchen Gnigone, Rodrigue Domingo, Dismand Houinato
INTRODUCTION: Poor access to cardiovascular checkups is a major cause of ignorance of embolic heart diseases as the etiology for ischemic stroke. OBJECTIVE: Study ischemic strokes due to embolic heart diseases and their associated factors. METHOD: It was a cross-sectional, prospective, descriptive and analytical study conducted from November 1, 2014 to August 31, 2015 on 104 patients with ischemic stroke confirmed through brain imaging. Embolic heart diseases included arrhythmia due to atrial fibrillation (AF), atrial flutter, myocardial infarction (MI), heart valve diseases and atrial septal aneurysm (ASA)...
April 15, 2018: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29429070/a-34-year-longitudinal-study-on-long-term-cardiac-outcomes-in-dm1-patients-with-normal-ecg-at-baseline-at-an-italian-clinical-centre
#19
Elisabetta Bucci, Marco Testa, Loretta Licchelli, Alessandra Frattari, Nadia Attalla El Halabieh, Erica Gabriele, Giulia Pignatelli, Tiziana De Santis, Laura Fionda, Fiammetta Vanoli, Stefania Morino, Matteo Garibaldi, Antonella Di Pasquale, Nicola Vanacore, Annalisa Botta, Giovanni Antonini
Cardiac conduction and/or rhythm abnormalities (CCRA) are the most frequent and life-threatening complications in DM1. In order to determine prevalence, incidence, characteristics, age of onset and predictors of CCRA, CCRA progression and sudden cardiac death (SCD) in DM1, we collected ECG/24hECG-Holter data from a yearly updated 34-year database of a cohort of 103 DM1 patients without cardiac abnormalities at baseline, followed for at least 1 year. Fifty-five patients developed CCRA [39 developed conduction abnormalities (CCA) and 16 rhythm abnormalities (CRA)], which progressed in 22...
April 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29404363/electrocardiographic-artifact-potentially-misleading-to-the-wrong-management
#20
Srishti Sareen, Mannu Nayyar, Brian Wheeler, Michelle Skelton, Rami N Khouzam
Atrial flutter (AF) is the second most common supraventricular tachyarrhythmia following atrial fibrillation. We present an interesting case of a diagnostic challenge manifested as an electrocardiogram (ECG) recording mimicking AF in a patient with Parkinson's disease (PD). A 72-year-old African-American female with history of PD presented to our Emergency Department with a one day history of chest pain. Her vital signs were within normal limits. Physical exam was remarkable for bilateral resting hand tremors at a frequency of 6-8 hertz and mild cogwheel rigidity in both upper extremities...
January 2018: Annals of Translational Medicine
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