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https://www.readbyqxmd.com/read/29748527/extreme-right-axis-deviation-in-acute-myocardial-infarction-a-hazardous-signal-of-poor-prognosis
#1
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/29709577/endocardial-ablation-of-ventricular-ectopic-beats-arising-from-the-basal-infero-septal-process-of-the-left-ventricle
#2
Anthony Li, Zia Zuberi, Jason S Bradfield, John K Zarif, David E Ward, Robert H Anderson, Kalyanam Shivkumar, Magdi M Saba
BACKGROUND: Idiopathic VE shows predilection to sites within the left ventricular base such as the outflow tract/aortic sinuses, LV summit and adjacent to the aorto-mitral continuity. We characterize VE arising from the inferior septum of the LV base that were successfully managed by LV endocardial ablation from the infero-septal recess of the LV. OBJECTIVES: To determine the incidence, electrocardiographic, electrophysiological findings and anatomical features associated with ventricular ectopy (VE) arising from the basal infero-septal process of the left ventricle (ISP-LV) ablated using an LV endocardial approach via the infero-septal recess of the left ventricle...
April 27, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29705366/permanent-pacemaker-implantation-following-rapid-deployment-aortic-valve-replacement
#3
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/29688314/electrocardiographic-characteristics-anthropometric-features-and-cardiovascular-risk-factors-in-a-large-cohort-of-adolescents
#4
Massimo Santini, Stefania Angela Di Fusco, Furio Colivicchi, Alessio Gargaro
Aims: The characteristics of electrocardiographic (ECG) patterns in the general population of adolescents are insufficiently defined. The purpose of this study is to report ECG patterns and their association with anthropometric characteristics. Methods and results: Twenty-four thousand and sixty-two students of Roman schools, aged 12-19, were screened with ECG and physical examinations. Electrocardiographic abnormalities were classified as either minor/non-clinically relevant or major, and anthropometric measures were evaluated per age class...
April 23, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29667013/predictors-of-paravalvular-regurgitation-and-permanent-pacemaker-implantation-after-tavr-with-a-next-generation-self-expanding-device
#5
Victor Mauri, Florian Deuschl, Thomas Frohn, Niklas Schofer, Matthias Linder, Elmar Kuhn, Andreas Schaefer, Volker Rudolph, Navid Madershahian, Lenard Conradi, Tanja K Rudolph, Ulrich Schäfer
AIMS: To identify predictors of paravalvular regurgitation (PVR) and permanent pacemaker implantation (PPI) following TAVR with a next-generation self-expanding device. METHODS AND RESULTS: Device landing zone (DLZ) calcification, angiographic implantation depth, and baseline and procedural characteristics were analyzed in 212 patients being treated with the ACURATE neo aortic bioprosthesis. PVR was none/trace in 57.1% and ≥ mild in 42.9% (37% mild, 6% moderate)...
April 17, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29658207/ablation-induced-change-in-the-course-of-fascicular-tachycardia
#6
Avishag Laish-Farkash, Avi Sabbag, Michael Glikson, Aharon Glick, Vladimir Khalameizer, Amos Katz, Yoav Michowitz
BACKGROUND: Multiform fascicular tachycardia (FT) was recently described as a ventricular tachycardia (VT) that has a reentrant mechanism using multiple fascicular branches and produces alternate fascicular VT forms. Ablating the respective fascicle may cause a change in the reentrant circuit resulting in a change in morphology. Ablation of the septal fascicle is crucial for successful treatment. OBJECTIVES: To describe four cases of FT in which ablation induced a change in QRS morphologies and aggravated clinical course...
January 2018: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/29652656/electrocardiogram-abnormalities-related-to-anti-malarials-in-systemic-lupus-erythematosus
#7
Taneisha K McGhie, Paula Harvey, Jiandong Su, Nicole Anderson, George Tomlinson, Zahi Touma
OBJECTIVES: Cardiotoxicity with potential conduction/structural abnormalities on electrocardiogram (ECG) have been reported with anti-malarial (AM). We aimed to study whether cumulative AM is associated with ECG abnormalities. METHODS: A standard resting supine ECG was performed on consecutive patients attending the Lupus Clinic since 2012. ECG abnormalities were grouped into structural [left ventricular hypertrophy or atrial enlargement] and conduction abnormalities [prolonged corrected QT interval (QTc), short PR interval, left bundle branch block (LBBB), right bundle branch block (RBBB) and atrioventricular block (AVB), bradycardia, tachycardia, premature atrial complex, ectopic atrial rhythm, atrial fibrillation, premature ventricular complex and ventricular bigeminy]...
April 13, 2018: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29614430/a-novel-wavelet-sequences-based-on-deep-bidirectional-lstm-network-model-for-ecg-signal-classification
#8
Özal Yildirim
Long-short term memory networks (LSTMs), which have recently emerged in sequential data analysis, are the most widely used type of recurrent neural networks (RNNs) architecture. Progress on the topic of deep learning includes successful adaptations of deep versions of these architectures. In this study, a new model for deep bidirectional LSTM network-based wavelet sequences called DBLSTM-WS was proposed for classifying electrocardiogram (ECG) signals. For this purpose, a new wavelet-based layer is implemented to generate ECG signal sequences...
March 28, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29576967/prognostic-value-of-new-onset-right-bundle-branch-block-in-acute-myocardial-infarction-patients-a-systematic-review-and-meta-analysis
#9
Juntao Wang, Hongxing Luo, Chunling Kong, Shujuan Dong, Jingchao Li, Haijia Yu, Yingjie Chu
Background: Patients with acute myocardial infarction (AMI) and bundle-branch block have poor prognoses. The new European Society of Cardiology guideline suggests a primary percutaneous coronary intervention strategy when persistent ischemic symptoms occur in patients with persistent ischemic symptoms and right bundle-branch block (RBBB), but the level of evidence is not high. In fact, the presence of RBBB may lead to the misdiagnosis of transmural ischemia and mask the early diagnosis of ST-elevation myocardial infarction...
2018: PeerJ
https://www.readbyqxmd.com/read/29562793/wolff-parkinson-white-syndrome-and-noncompaction-in-leber-s-hereditary-optic-neuropathy-due-to-the-variant-m-3460g-a
#10
Josef Finsterer, Claudia Stollberger, Edmund Gatterer
This report describes a 66-year-old Caucasian male who acutely developed severe, bilateral impairment of visual acuity at 24 years of age. Leber's hereditary optic neuropathy (LHON) was suspected but the diagnosis was not genetically confirmed until the age of 49 years when the primary LHON mutation m.3460G>A was detected. Since onset, visual acuity had slightly improved. The family history was positive for LHON (brother, two sisters of mother, female cousin) and genetically confirmed in his brother and one aunt...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29523425/inadvertent-left-ventricle-endocardial-or-uncomplicated-right-ventricular-pacing-how-to-differentiate-in-the-emergency-department
#11
Yalcin Velibey, Baris Yaylak, Tolga Sinan Guvenc, Goksel Cinier, Koray Kalenderoglu, Ozge Guzelburc, Ozlem Yildirimturk
BACKGROUND: Temporary transvenous pacemaker implantation is an important and critical procedure for emergency physicians. Traditionally, temporary pacemakers are inserted by electrocardiography (ECG) guidance in the emergency department because fluoroscopy at the bedside in an unstable patient can be limited by time and equipment availability. However, in the presence of atrial septal defect, ventricular septal defect, and patent foramen ovale, the pacemaker lead can be implanted inadvertently into the left ventricle or directly into the coronary sinus instead of right ventricle...
May 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29467855/clinical-characteristics-and-value-in-early-reperfusion-therapy-for-new-onset-right-bundle-branch-block-in-patients-with-acute-myocardial-infarction
#12
Jingchao Li, Xiaodong Li, Shujuan Dong, Yapan Yang, Yingjie Chu
The value of the right bundle branch block (RBBB) in the treatment of acute myocardial infarction remains unclear. Studies on the RBBB may significantly influence the treatment of acute myocardial infarction. A total of 845 patients with acute myocardial infarction who underwent primary coronary angiography at Henan Provincial People's Hospital were analyzed. Higher peak enzyme levels, a higher ratio of Killip ≥II and closer proximal occlusion of infarct-related artery (IRA) were observed in patients with RBBB compared with those without...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29442199/multisite-cardiac-resynchronization-therapy-for-traditional-and-non-traditional-indications
#13
Avishag Laish-Farkash, Sharon Bruoha, Vladimir Khalameizer, Chaim Yosefy, Yoav Michowitz, Mahmoud Suleiman, Amos Katz
PURPOSE: Multisite cardiac resynchronization therapy (MSCRT) with dual-vein left ventricular (LV) pacing has theoretical advantages over conventional CRT in faster and more physiological LV activation. We aimed to define indications, feasibility, safety, acute, and long-term results of MSCRT. METHODS: All patients implanted with MSCRT during 2008-2014 in a single center were reviewed and analyzed. RESULTS: Thirty-nine patients (90% CRT-defibrillators, 64 ± 9 years, 85% male, 74% ischemic etiology) were included...
March 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29408870/mid-term-outcomes-of-biventricular-obstruction-and-left-ventricular-outflow-tract-obstruction-after-surgery-correction-in-child-and-adolescent-patients-with-hypertrophic-cardiomyopathy
#14
Shanshan Zhai, Haitao Xu, Chaomei Fan, Yinjian Yang, Fei Hang, Xiying Guo, Hongyue Wang, Fujian Duan, Jun Yan
BACKGROUND: Data on the outcomes of hypertrophic cardiomyopathy (HCM) with biventricular obstruction are limited. OBJECTIVE: Our aim is to compare mid-term outcomes of biventricular outflow tract obstruction (BVOTO) HCM, left ventricular outflow tract obstruction (LVOTO) HCM and nonobstructive hypertrophic cardiomyopathy (NO-HCM) in children and adolescents who were treated with standard medication or surgical resection. METHODS: This retrospective study identified 21 BVOTO patients and recruited 27 LVOTO and 24 NO-HCM patients younger than 18 years presenting at our institution...
2018: PloS One
https://www.readbyqxmd.com/read/29387326/performance-of-electrophysiologic-study-in-an-asymptomatic-patient-with-type-2-intermittent-brugada-syndrome-to-do-or-not-to-do
#15
Kaveh Hosseini, Mansour Jahangiri, Ali Vasheghani Farahani
Background: Brugada syndrome (BrS) is an inherited channelopathy, which is associated with sudden cardiac death due to rapid polymorphic VT or VF. There is no definite consensus regarding the management of asymptomatic patients. Some experts advocate close follow-up; others propose the programmed stimulation for risk stratification. We aimed to evaluate the benefit of complete atrial and ventricular stimulation in patients with BrS and palpitation. Case Presentation: A 30-year-old man was admitted to our hospital because of a family history of sudden cardiac death (SCD) at age less than 45 years...
2018: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/29333794/ablation-induced-change-in-the-course-of-fascicular-tachycardia
#16
Avishag Laish-Farkash, Avi Sabbag, Michael Glikson, Aharon Glick, Vladimir Khalameizer, Amos Katz, Yoav Michowitz
BACKGROUND: Multiform fascicular tachycardia (FT) was recently described as a ventricular tachycardia (VT) that has a reentrant mechanism using multiple fascicular branches and produces alternate fascicular VT forms. Ablating the respective fascicle may cause a change in the reentrant circuit resulting in a change in morphology. Ablation of the septal fascicle is crucial for successful treatment. OBJECTIVES: To describe four cases of FT in which ablation induced a change in QRS morphologies and aggravated clinical course...
January 2018: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/29326870/lyme-carditis-with-isolated-left-bundle-branch-block-and-myocarditis-successfully-treated-with-oral-doxycycline
#17
Burke A Cunha, Maekal Elyasi, Prince Singh, Ismail Jimada
Lyme disease may present with a variety of cardiac manifestations ranging from first degree to third degree heart block. Cardiac involvement with Lyme disease may be asymptomatic, or symptomatic. Atrioventrical conduction abnormalities are the most common manifestation of Lyme carditis. Less common, are alternating right bundle branch block (RBBB) and left bundle branch block (LBBB). We present an interesting case of a young male whose main manifestation of Lyme carditis was isolated LBBB. He also had mild Lyme myocarditis...
2018: IDCases
https://www.readbyqxmd.com/read/29302023/a-case-of-type-i-and-ii-brugada-phenocopy-unmasked-in-a-patient-with-normal-baseline-electrocardiogram-ecg
#18
Marie H Bernardo, Satish R Tiyyagura
BACKGROUND Brugada pattern on electrocardiogram (ECG) is seen when there are at least 2 mm J-point elevation and 1 mm ST-segment elevation in two or more of the right precordial leads, with right bundle-branch block (RBBB)-like morphology. Elevation of a coved-type shape in leads V1 and V2 is consistent with type I Brugada pattern, whereas elevation of a saddle-back configuration distinguishes type II Brugada. If accompanied by life-threatening arrhythmias or sudden cardiac death, Brugada syndrome (BrS) is diagnosed...
January 5, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29289947/avoiding-s3-valve-over-sizing-by-deployment-balloon-over-filling-impact-on-rates-of-permanent-pacemaker-and-other-procedural-complications-during-tavr
#19
Tej Sheth, Madhu K Natarajan, Catherine Kreatsoulas, Richard Whitlock, Dominic Parry, Victor Chu, Amanda Smith, James L Velianou
OBJECTIVES: Patients with annular areas just above nominal S3 valve areas are at increased risk of over-sizing if a larger valve is implanted. We therefore evaluated the rate of permanent pacemaker (PPM) implantation associated with avoiding over-sizing by selective deployment balloon over-filling during transcatheter aortic valve replacement (TAVR) with the Sapien 3 (S3) valve. METHODS: We included consecutive patients treated with the S3 valve from January 2016 to May 2017...
January 2018: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29260369/predictors-of-right-ventricular-pacing-and-pacemaker-dependence-in-transcatheter-aortic-valve-replacement-patients
#20
Esseim Sharma, Antony F Chu
PURPOSE: Transcatheter aortic valve replacement (TAVR) is an increasingly prevalent therapy in patients with severe symptomatic aortic stenosis. Conduction disturbances requiring permanent pacemaker (PPM) implantation are a known complication of TAVR. This study investigated the progression of cardiac conduction disease in the post-TAVR pacemaker population and identified predictors of post-TAVR right ventricular (RV) pacing dependence. METHODS: Prospectively collected echocardiographic, ECG, and PPM interrogation data of 262 consecutive patients who underwent TAVR with placement of a balloon-expandable valve at one institution from March 2012 to October 2016 were analyzed...
January 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
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