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https://www.readbyqxmd.com/read/29771930/perspectives-of-human-verification-via-binary-qrs-template-matching-of-single-lead-and-12-lead-electrocardiogram
#1
Vessela Krasteva, Irena Jekova, Ramun Schmid
OBJECTIVE: This study aims to validate the 12-lead electrocardiogram (ECG) as a biometric modality based on two straightforward binary QRS template matching characteristics. Different perspectives of the human verification problem are considered, regarding the optimal lead selection and stability over sample size, gender, age, heart rate (HR). METHODS: A clinical 12-lead resting ECG database, including a population of 460 subjects with two-session recordings (>1 year apart) is used...
2018: PloS One
https://www.readbyqxmd.com/read/29759533/12-lead-electrocardiogram-to-localize-region-of-abnormal-electroanatomic-substrate-in-arrhythmogenic-right-ventricular-cardiomyopathy
#2
Cory M Tschabrunn, Haris M Haqqani, Pasquale Santangeli, Erica S Zado, Francis E Marchlinski
OBJECTIVES: The purpose of this study was to evaluate the relationship between electrocardiogram (ECG) QRS fragmentation (fQRS) and right ventricular (RV) endocardial (ENDO) and epicardial (EPI) electroanatomic substrate abnormalities in patients with arrhythmogenic right ventricular cardiomyopathy (ARVC). BACKGROUND: fQRS is frequently observed in patients with ARVC and reflects delayed conduction due to RV fibrosis. METHODS: A total of 30 consecutive patients met the task force criteria for ARVC (19 men, mean age 41...
July 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29748527/extreme-right-axis-deviation-in-acute-myocardial-infarction-a-hazardous-signal-of-poor-prognosis
#3
Qingyu Wang, Shuo Pan, Fuqiang Liu, Dan Yang, Jun-Kui Wang
BACKGROUND New-onset extreme right axis deviation and right bundle branch block (RBBB) are rare during acute myocardial infarction (AMI), and has only been reported in several cases reflecting the severity of AMI. It could predict severe clinical complications and higher risks in coronary artery disease. Although there is little electrophysiological explanation, the complications are severe. They should be emphasized in newly diagnosed extreme right axis deviation and RBBB in AMI. CASE REPORT A 72-year-old male was admitted to our department with a chief complaint of intermittent retrosternal chest pain and was diagnosed with extensive anterior myocardial infarction with RBBB, by elevated myocardial enzymes and ECG...
May 11, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29743998/transcatheter-aortic-valve-in-valve-procedure-in-patients-with-bioprosthetic-structural-valve-deterioration
#4
REVIEW
Ross M Reul, Mahesh K Ramchandani, Michael J Reardon
Surgical aortic valve replacement is the gold standard procedure to treat patients with severe, symptomatic aortic valve stenosis or insufficiency. Bioprosthetic valves are used for surgical aortic valve replacement with a much greater prevalence than mechanical valves. However, bioprosthetic valves may fail over time because of structural valve deterioration; this often requires intervention due to severe bioprosthetic valve stenosis or regurgitation or a combination of both. In select patients, transcatheter aortic valve replacement is an alternative to surgical aortic valve replacement...
July 2017: Methodist DeBakey Cardiovascular Journal
https://www.readbyqxmd.com/read/29743908/quantitative-estimation-of-aortic-valve-calcification-in-multislice-computed-tomography-in-predicting-the-development-of-paravalvular-leaks-following-transcatheter-aortic-valve-replacement
#5
Małgorzata Ryś, Tomasz Hryniewiecki, Ilona Michałowska, Patrycjusz Stokłosa, Monika Różewicz-Juraszek, Zbigniew Chmielak, Maciej Dąbrowski, Kryspin Mirota, Piotr Szymański
Introduction: Transcatheter aortic valve implantation (TAVI) improves prognosis in patients disqualified from surgical valve replacement. Calcifications of the aortic complex can lead to deformation of the prosthesis, resulting in paravalvular leaks (PVL). Aim: To evaluate the predictive value of quantitative estimation of volume/weight and geometric distribution of calcifications in multislice computed tomography, for the development of PVL. Material and methods: This was a retrospective, case-control study on patients with a CoreValve aortic prosthesis...
2018: Postępy W Kardiologii Interwencyjnej, Advances in Interventional Cardiology
https://www.readbyqxmd.com/read/29716913/the-value-of-lead-avr-a-frequently-neglected-lead
#6
Salah S Al-Zaiti, Teri M Kozik, Michele M Pelter, Mary G Carey
No abstract text is available yet for this article.
May 2018: American Journal of Critical Care: An Official Publication, American Association of Critical-Care Nurses
https://www.readbyqxmd.com/read/29705366/permanent-pacemaker-implantation-following-rapid-deployment-aortic-valve-replacement
#7
Matthew A Romano, Michael Koeckert, Mubashir A Mumtaz, Frank N Slachman, Himanshu J Patel, W Randolph Chitwood, Glenn R Barnhart, Eugene A Grossi
BACKGROUND: Expandable, rapid deployment aortic valves may interfere with the cardiac conduction system, which can lead to permanent pacemaker implantation (PPI). We sought to characterize PPI following rapid deployment aortic valve replacement (RDAVR) with the EDWARDS INTUITY valve system and investigate associated factors. METHODS: We analyzed 708 patients from 29 centers in the TRANSFORM trial undergoing RDAVR ± CABG without pre-existing pacemakers. Intrinsic conduction status was recorded as well as PPI incidence through one year...
April 26, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29677051/electrocardiographic-predictors-of-atrial-fibrillation-in-nonhypertensive-and-hypertensive-individuals
#8
Arttu O Lehtonen, Ville L Langén, Kimmo Porthan, Mika Kähönen, Markku S Nieminen, Antti M Jula, Teemu J Niiranen
OBJECTIVE: The aim of this study was to compare the predictive value of ECG abnormalities for atrial fibrillation in nonhypertensive versus hypertensive individuals. METHODS: We recorded ECG and measured conventional cardiovascular risk factors in a nationwide population-based sample of 5813 Finns. We divided the participants into nonhypertensive (n = 3148) and hypertensive (n = 2665) individuals and followed the participants for incident atrial fibrillation events...
April 19, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29676045/prognostic-value-of-positive-t-wave-in-lead-avr-in-patients-with-non-st-segment-myocardial-infarction
#9
Ahmad Separham, Bahram Sohrabi, Arezou Tajlil, Leili Pourafkari, Robabeh Sadeghi, Samad Ghaffari, Nader D Nader
BACKGROUND: Lead aVR provides prognostic information in various settings in patients with ischemia. We aim to investigate the role of a positive T wave in lead aVR in non-ST segment myocardial infarction (NSTEMI). METHODS: In a prospective cohort study, we included 400 patients with NSTEMI. Presentation electrocardiogram (ECG) was investigated for presence of a positive T wave as well as ST segment elevation (STE) in aVR and study variables were compared. Predictors of primary outcome defined as hospital major adverse cardiovascular events (MACE) and secondary outcome, defined as three-vessel coronary disease and/or left main coronary artery stenosis (3VD/LMCA) stenosis in angiography, were determined in multivariate logistic regression analysis...
April 19, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29662807/mechanical-versus-tissue-aortic-prosthesis-in-sexagenarians-comparison-of-hemodynamic-and-clinical-outcomes
#10
Jongbae Son, Yang Hyun Cho, Dong Seop Jeong, Kiick Sung, Wook Sung Kim, Young Tak Lee, Pyo Won Park
Background: The question of which type of prosthetic aortic valve leads to the best outcomes in patients in their 60s remains controversial. We examined the hemodynamic and clinical outcomes of aortic valve replacement in sexagenarians according to the type of prosthesis. Methods: We retrospectively reviewed 270 patients in their 60s who underwent first-time aortic valve replacement from 1995 to 2011. Early and late mortality, major adverse valve-related events, anticoagulation-related events, and hemodynamic outcomes were assessed...
April 2018: Korean Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29658865/hemodynamic-consequence-of-different-pacing-modes-after-aortic-valve-replacement
#11
Arndt H Kiessling
OBJECTIVES: Ventricular pacemaker stimulation may cause deterioration of hemodynamics in patients with left-ventricular hypertrophy following aortic valve replacement. Since the diastolic function is often impaired, it remains unclear which heart rate best optimizes cardiac output. Low heart rates are suggested to treat impaired diastolic function chronically, but it is possible that cardiac output may be augmented by increasing the heart rate in patients with a fixed stroke volume (SV)...
March 6, 2018: Heart Surgery Forum
https://www.readbyqxmd.com/read/29627955/t-wave-positivity-in-lead-avr-is-associated-with-mortality-in-patients-with-cardiac-resynchronization-therapy
#12
Yahya Kemal İçen, Yurdaer Dönmez, Hasan Koca, Mehmet Uğurlu, Mevlüt Koç
PURPOSE: Positive T wave polarity in lead aVR (TPaVR) is associated with a poor prognostic indicator in patients with heart failure reduce ejection fraction (HFrEF). Our aim was to investigate the relationship between positive TPaVR and mortality in patients with cardiac resynchronization therapy defibrillator (CRT-D). METHODS: We included retrospectively 224 HFrEF patients with CRT-D in sinus rhythm. Laboratory, electrocardiographic (ECG), and echocardiographic data were recorded...
April 8, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29618760/association-between-optical-coherence-tomography-based-retinal-microvasculature-characteristics-and-myocardial-infarction-in-young-men
#13
Robert Kromer, Eike Tigges, Nargis Rashed, Inga Pein, Maren Klemm, Stefan Blankenberg
Incident myocardial infarction (MI) is a leading cause of adult mortality in the United States. However, because MI has a relatively low incidence in the young population, little information exists on the disease in younger adults. Because the retina has the unique quality that its vasculature is readily and noninvasively visible, the retina is frequently studied to evaluate correlations between vessels and cardiovascular diseases. In the current study, we evaluated the retinal microvasculature of patients who had experienced an MI before 50 years of age (n = 53 subjects) and age- and sex-matched patients who had not experienced an MI (n = 53 patients)...
April 4, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29618696/subclinical-leaflet-thrombosis-in-transcatheter-aortic-valve-replacement-detected-by-multidetector-computed-tomography-a-review-of-current-evidence
#14
Hashrul N Rashid, Adam J Brown, Liam M McCormick, Ameera S Amiruddin, Kim K Be, James D Cameron, Arthur Nasis, Robert P Gooley
Subclinical leaflet thrombosis (SLT) following transcatheter aortic valve replacement (TAVR) has been increasingly recognized. SLT has the hallmark features of hypo-attenuated leaflet thickening (HALT) on multidetector computed tomography (MDCT), which may result in hypoattenuation affecting motion (HAM). The actual prevalence of this condition is uncertain, with limited observational registries. SLT has caught the attention of the cardiovascular community because of concerns regarding its clinical sequelae, specifically the potential increased incidence of cerebrovascular events...
April 4, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29610833/st-segment-elevation-in-lead-avr-a-visual-reminder-of-potential-catastrophe
#15
Jorge A Brenes-Salazar
No abstract text is available yet for this article.
April 2, 2018: JAMA Internal Medicine
https://www.readbyqxmd.com/read/29581813/atypical-presentation-of-acute-myeloid-leukemia
#16
Kavita Agrawal, Levin Miles, Nirav Agrawal, Asim Khan
We present a case of a 48-year-old male who presented with worsening pleuritic chest pain for 2 h. He also complained of fever, malaise, headache and severe neck pain. Electrocardiogram (ECG) showed ST segment elevation in leads I, II, aVL and V5 with PR elevation and ST depression in aVR. On admission, troponin-I was 14.8 ng/mL. Based on ECG changes, elevated troponin and family history of early coronary artery disease, the patient was emergently taken to cardiac catheterization lab. Angiography showed non-obstructive coronaries, mild hypokinesis of mid inferior and anterolateral wall with ejection fraction (EF) of 40-45%...
February 2018: World Journal of Oncology
https://www.readbyqxmd.com/read/29578921/updated-clinical-indications-for-transcatheter-aortic-valve-implantation-in-patients-with-severe-aortic-stenosis-expert-opinion-of-the-italian-society-of-cardiology-and-gise
#17
Ciro Indolfi, Antonio L Bartorelli, Sergio Berti, Paolo Golino, Giovanni Esposito, Giuseppe Musumeci, Sonia Petronio, Corrado Tamburino, Giuseppe Tarantini, Gianpaolo Ussia, Corrado Vassanelli, Carmen Spaccarotella, Roberto Violini, Giuseppe Mercuro, Francesco Romeo
: The introduction of percutaneous treatment of severe aortic stenosis with transcatheter aortic valve implantation (TAVI) remains one of the greatest achievements of interventional cardiology. In fact, TAVI emerged as a better option than either medical therapy or balloon aortic valvuloplasty for patients who cannot undergo surgical aortic valve replacement (SAVR) or are at high surgical risk. Recently, increased operator experience and improved device systems have led to a worldwide trend toward the extension of TAVI to low-risk or intermediate-risk patients...
May 2018: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/29577347/electrocardiographic-predictors-of-validated-right-ventricular-outflow-tract-septal-pacing-for-correct-localization-of-transthoracic-echocardiography
#18
Huiqiang Wei, Jiaojiao Tang, Dongli Chen, Qianhuan Zhang, Yuanhong Liang, Lie Liu, Shulin Wu, Chunying Lin, Zhiming Yang, Chanjuan Chai
BACKGROUND: Electrocardiographic (ECG) characteristics of true right ventricular outflow tract (RVOT) septal pacing have not been clearly demonstrated. HYPOTHESIS: We hypothesized that ECG parameters would help operators differentiate true RVOT septum from non-septal septum. METHODS: We analyzed 151 patients who underwent pacemaker implantation with a ventricular lead in the RVOT. Transthoracic echocardiographic (TTE) determination of pacing sites was applied in all patients after implantation...
March 25, 2018: Clinical Cardiology
https://www.readbyqxmd.com/read/29559540/treating-her-well
#19
Joris M G Theunissen, Heleen Lameijer
CLINICAL INTRODUCTION: A 44-year-old woman presents pain free to our ED after experiencing 45 min of tightening of the chest with radiation to her left arm, diaphoresis and nausea. Her vital signs are normal except for her high BP, which is 180/110. She reports recurrent episodes of chest pain in the past 1.5 weeks, unrelated to exercise. She visited a general practitioner who prescribed pain medication and treated her new-onset hypertension. Besides the recently found hypertension, heavy smoking is her only other traditional risk factor for cardiovascular disease...
April 2018: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/29558902/emergency-transcatheter-aortic-valve-replacement-for-a-patient-with-decompensated-severe-aortic-stenosis-accompanied-by-cardiorenal-syndrome-a-case-report
#20
Hongju Kim, Jung-Hee Lee
BACKGROUND: Severe aortic stenosis (AS) may lead to acute decompensated heart failure resistant to medical treatment. Here, we report a successful emergent transcatheter aortic valve replacement (TAVR) in a patient presenting with decompensated severe AS accompanied by cardiorenal syndrome. CASE PRESENTATION: A 82-year-old man presented at our emergency department with aggravated dyspnea. His chest X-ray showed bilateral pulmonary edema, and laboratory examination revealed acute kidney injury...
March 20, 2018: BMC Cardiovascular Disorders
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