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https://www.readbyqxmd.com/read/28217615/type-1-brugada-pattern-electrocardiogram-induced-by-hypokalemia
#1
Thein Swe, Muhammad Hassan Dogar
Coved-type ST-segment elevation in the right precordial leads are the characteristics of Brugada syndrome, an inherited arrhythmogenic ion channel disease, which could lead to ventricular arrhythmia and sudden death. Hypokalemia alone may induce Type 1 Brugada pattern electrocardiogram (EKG), and the association has rarely been reported. We describe a patient with hypokalemia 2.9 mmol/L and the appearance of new right bundle branch block pattern with coved ST-segment elevations with inverted T wave in leads V1-V2...
July 2016: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/28217234/inappropriate-shocks-from-a-subcutaneous-implantable-cardioverter-defibrillator-due-to-oversensing-during-periods-of-rate-related-bundle-branch-block
#2
Maria João Sousa, Tim Betts
The subcutaneous implantable cardioverter-defibrillator (S-ICD) is a novel technology with proven efficacy in sudden cardiac death prevention; however, there is a lack of long-term safety data. We describe the case of a 55-year-old female patient implanted with an S-ICD due to idiopathic ventricular fibrillation, who subsequently presented with inappropriate shocks leading to ventricular fibrillation that was successfully terminated by another shock. Inappropriate shocks were due to intermittent T wave oversensing during periods of rate-dependent right bundle branch block...
February 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28217027/adenosine-stress-induced-left-bundle-branch-block-during-technetium-99m-tetrofosmin-myocardial-perfusion-imaging
#3
Mohan Roop Jayanthi, Arun Sasikumar, Arun Kumar Reddy Gorla, Ashwani Sood, Anish Bhattacharya, Bhagwant Rai Mittal
The occurrence of left bundle branch block (LBBB) in electrocardiogram during exercise testing is a relatively rare finding. The incidence of LBBB during exercise testing ranges from 0.5% to 1.1%. The mechanism of exercise-induced LBBB (EI-LBBB) is poorly understood, but ischemia is a proposed etiology. Stress myocardial perfusion imaging (MPI) can be useful in patients with EI-LBBB to rule out coronary artery disease. Adenosine vasodilator stress is the preferred mode of stress in patients with LBBB for performing stress-MPI...
January 2017: World Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28207539/role-of-coronary-angiography-for-out-of-hospital-cardiac-arrest-survivors-according-to-postreturn-of-spontaneous-circulation-on-an-electrocardiogram
#4
Tae Rim Lee, Sung Yeon Hwang, Won Chul Cha, Tae Gun Shin, Min Seob Sim, Ik Joon Jo, Keun Jeong Song, Joong Eui Rhee, Yeon Kwon Jeong
Survivors of out-of-hospital cardiac arrest (OHCA) have high mortality and morbidity. An acute coronary event is the most common cause of sudden cardiac death. For this reason, coronary angiography is an important diagnostic and treatment strategy for patients with postcardiac arrest. This study aimed to identify the correlation between postreturn of spontaneous circulation (ROSC) on an electrocardiogram (ECG) and results of coronary angiography of OHCA survivors.We collected data from our OHCA registry from January 2010 to November 2014...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28202628/effects-of-upgrade-versus-de-novo-cardiac-resynchronization-therapy-on-clinical-response-and-long-term-survival-results-from-a-multicenter-study
#5
Mate Vamos, Julia W Erath, Zsolt Bari, Denes Vagany, Sven P Linzbach, Tatsiana Burmistrava, Carsten W Israel, Gabor Z Duray, Stefan H Hohnloser
BACKGROUND: Benefits of cardiac resynchronization therapy (CRT) on morbidity and mortality in selected patients are well known. Although the number of upgrade procedures from single- or dual-chamber devices to CRT is increasing, there are only sparse data on the outcomes of upgrade procedures compared with de novo CRT. This study aimed to evaluate clinical response and survival in patients receiving de novo versus upgrade CRT defibrillator therapy. METHODS AND RESULTS: Prospectively collected outcome data were compared in patients undergoing de novo or upgrade CRT defibrillator implantation at 3 implant centers in Germany and Hungary...
February 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28198522/cardiovascular-drug-utilization-post-implant-is-related-to-clinical-outcome-in-heart-failure-patients-receiving-cardiac-resynchronization-therapy
#6
Zoltan Bakos, Christian Reitan, Anna Werther-Evaldsson, Anders Roijer, Pyotr PLatonov, Rasmus Borgquist
BACKGROUND: In select patients with heart failure, cardiac resynchronization therapy (CRT) is the most common complementary treatment besides medical treatment. We aimed to assess the association between post CRT-implant changes in cardiovascular medication and cardiovascular mortality and heart failure hospitalization. METHODS: 211 patients on optimal medical therapy eligible for CRT were retrospectively included in this study (72 ± 7 years, 80% male, 66% left bundle branch block [LBBB], 48% dilated cardiomyopathy [DCMP]) and investigated at baseline and after 6 months ...
February 15, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28197280/predictors-of-permanent-pacemaker-implantation-after-coronary-artery-bypass-grafting-and-valve-surgery-in-adult-patients-in-current-surgical-era
#7
Bandar Al-Ghamdi, Yaseen Mallawi, Azam Shafquat, Alexandra Ledesma, Nadiah AlRuwaili, Mohamed Shoukri, Shahid Khan, Aly Al Sanei
BACKGROUND: Permanent pacemaker (PPM) implantation after cardiac surgery is required in 0.4-6% of patients depending on cardiac surgery type. PPM implantation in the early postoperative period may reduce morbidity and postoperative hospital stay. We performed a retrospective review of electronic medical records of adult patients with coronary artery bypass grafting (CABG), valve surgery, or both, over a 3-year period. Our aim was to identify predictors of PPM requirements and PPM dependency on follow-up in the current surgical era...
August 2016: Cardiology Research
https://www.readbyqxmd.com/read/28197277/scoring-system-based-on-electrocardiogram-features-to-predict-the-type-of-heart-failure-in-patients-with-chronic-heart-failure
#8
Purnasidha Bagaswoto Hendry, Lucia Krisdinarti, Maharani Erika
BACKGROUND: Heart failure (HF) is divided into heart failure with reduced ejection fraction (HFrEF) and heart failure with preserved ejection fraction (HFpEF). Mortality from HF is inversely related to left ventricular function. Additional studies are required to distinguish between these two types of HF. A previous study showed that HFrEF is less likely when electrocardiogram (ECG) findings are normal. This study aims to create a scoring system based on ECG findings that will predict the type of HF...
June 2016: Cardiology Research
https://www.readbyqxmd.com/read/28188971/wide-qrs-tachycardia-with-left-bundle-branch-block-morphology-what-is-the-mechanism
#9
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Krishna Chaitanya, Sreevilasam Pushpangadhan Abhilash, Anees Thajudeen, Ajitkumar Valaparambil
A 55-year-old woman was referred for radiofrequency catheter ablation of narrow QRS tachycardia that was terminated with intravenous adenosine. Twelve-lead ECG was normal during sinus rhythm. The electrophysiological study showed an AH interval of 114 ms and HV interval of 42 ms during sinus rhythm. This article is protected by copyright. All rights reserved.
February 11, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28185080/wellens-syndrome-can-indicate-high-grade-lad-stenosis-in-case-of-left-bundle-branch-block
#10
Steffen Grautoff
Diagnosing acute myocardial infarction (AMI) in left bundle branch block (LBBB) is challenging. Modified Sgarbossa criteria are known to help detect AMI in LBBB. This is a report about an electrocardiogram (ECG) with Wellens' signs in combination with a pre-existing LBBB. The ECG of a patient with fluctuating chest pain showed very subtle and one day later more obvious Wellens'signs. A left anterior descending artery (LAD) stenosis was diagnosed and successfully treated. Wellens' syndrome can be diagnosed in a case of LBBB and help detect a high-grade LAD stenosis even if modified Sgarbossa criteria are not met...
February 9, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/28183339/prevalence-and-associated-factors-of-resting-electrocardiogram-abnormalities-among-systemic-lupus-erythematosus-patients-without-cardiovascular-disease
#11
Hanan Al Rayes, Paula J Harvey, Dafna D Gladman, Jiandong Su, Arthy Sabapathy, Murray B Urowitz, Zahi Touma
BACKGROUND: Electrocardiogram (ECG) cardiovascular disease (CVD) abnormalities (ECG-CVD) are predictive of subsequent CVD events in the general population. Systemic lupus erythematosus (SLE) patients are vulnerable to CVD. We aimed to determine the prevalence of ECG-CVD in SLE patients and to examine the risk factors associated with ECG-CVD. METHODS: A 12-lead resting supine ECG was performed on consecutive adult patients attending the clinic. One cardiologist interpreted the ECGs...
February 10, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28176418/impact-of-qrs-complex-duration-and-morphology-on-left-ventricular-reverse-remodelling-and-left-ventricular-function-improvement-after-cardiac-resynchronization-therapy
#12
Pieter van der Bijl, Mand Khidir, Melissa Leung, Bart Mertens, Nina Ajmone Marsan, Victoria Delgado, Jeroen J Bax
AIMS: To evaluate the impact of the interaction of QRS duration and morphology on left ventricular (LV) reverse remodelling and LV functional improvement in heart failure (HF) patients treated with cardiac resynchronization therapy (CRT). METHODS AND RESULTS: From an ongoing registry of HF patients treated with CRT according to contemporary guidelines, demographic, clinical, electrocardiographic (ECG) and echocardiographic characteristics were analysed. Patients were divided according to QRS duration and morphology: <150 ms vs...
February 8, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28164349/applicability-of-a-novel-formula-bogossian-formula-for-evaluation-of-the-qt-interval-in-heart-failure-and-left-bundle-branch-block-due-to-right-ventricular-pacing
#13
Gerrit Frommeyer, Harilaos Bogossian, Eleni Pechlivanidou, Philipp Conzen, Christopher Gemein, Kay Weipert, Inga Helmig, Ritvan Chasan, Victoria Johnson, Lars Eckardt, Christian W Hamm, Melchior Seyfarth, Bernd Lemke, Markus Zarse, Jörn Schmitt, Damir Erkapic
BACKGROUND: The presence of left bundle branch block (LBBB) due to right ventricular pacing represents a particular challenge in properly measuring the QTc interval. In 2014 a new formula for evaluation of QT interval in patients with LBBB was reported. METHODS: 145 patients with implantable cardioverter defibrillator (ICD) were included in this prospective multicenter observational study. Inclusion criteria were: no permanent right ventricular stimulation, an intrinsic QRS interval of <120ms and reduced left ventricular function...
February 5, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28154601/cardiac-resynchronization-therapy-device-implantation-in-a-patient-with-cardiogenic-shock-under-percutaneous-mechanical-circulatory-support
#14
Kyunghee Lim, Jin-Oh Choi, Jeong Hoon Yang, Seung-Jung Park, Sun Hwa Kim, Jiseok Kang, Hyun Sung Joh, Sun Hye Shin
65-year-old woman was admitted to our hospital with acute decompensated heart failure with reduced left ventricular ejection fraction and severe mitral regurgitation. Electrocardiography revealed a typical left bundle branch block and atrial fibrillation. Her condition deteriorated despite administering high-doses of inotropes and vasopressors. Pending a decision to therapy, venoarterial extracorporeal membrane oxygenation (ECMO) was performed when the patient underwent a cardiogenic shock. Although the hemodynamic status stabilized with ECMO support, weaning the patient from ECMO was not possible...
January 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28150083/left-bundle-branch-block-contraction-patterns-identified-from-radial-strain-analysis-predicts-outcomes-following-cardiac-resynchronization-therapy
#15
Chun-Li Wang, Chia-Tung Wu, Yung-Hsin Yeh, Lung-Sheng Wu, Yi-Hsin Chan, Chi-Tai Kuo, Pao-Hsien Chu, Lung-An Hsu, Wan-Jing Ho
A left bundle-branch block (LBBB) contraction pattern identified from longitudinal-strain analysis predicts outcomes following cardiac resynchronization therapy (CRT). We investigated the use of an LBBB-contraction pattern identified from radial- or circumferential-strain analysis in the prediction of CRT benefits. Eighty CRT candidates were prospectively enrolled. Before CRT implantation, speckle-tracking analyses in three deformation directions were performed to determine whether an LBBB-contraction pattern was present...
February 1, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28144025/case-report-of-s1q3t3-electrocardiographic-abnormality-in-a-pregnant-asthmatic-patient-during-acute-bronchospasm
#16
Hafiza Arshad, Rana Rahel Khan, Misbahuddin Khaja
BACKGROUND Asthma is the most common chronic pulmonary disease during pregnancy. Several previous reports have documented reversible electrocardiographic changes during severe acute asthma attacks, including tachycardia, P pulmonale, right bundle branch block, right axis deviation, and ST segment and T wave abnormalities. CASE REPORT We present the case of a pregnant patient with asthma exacerbation in which acute bronchospasm caused S1Q3T3 abnormality on an electrocardiogram (ECG). The complete workup of ECG findings of S1Q3T3 was negative and correlated with bronchospasm...
February 1, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28140304/electrical-approach-to-improve-left-ventricular-activation-during-right-ventricle-stimulation
#17
María Paula Bonomini, Daniel F Ortega, Luis D Barja, Nicolasa Mangani, Analía Paolucci, Emilio Logarzo
Coronary sinus mapping is commonly used to evaluate left atrial activation. Herein, we propose to use it to assess which right ventricular pacing modality produces the shortest left ventricular activation times (R-LVtime) and the narrowest QRS widths. Three study groups were defined: 54 controls without intraventricular conduction disturbances; 15 patients with left bundle branch block, and other 15 with right bundle branch block. Left ventricular activation times and QRS widths were evaluated among groups under sinus rhythm, right ventricular apex, right ventricular outflow tract and high output septal zone (SEPHO)...
2017: Medicina
https://www.readbyqxmd.com/read/28128660/cardiac-failure-in-a-trisomy-9-patient-undergoing-anesthesia-a-case-report
#18
Cara J Riley, Timothy Moore, Lauren Eagelston, Dale Burkett, Scott Auerbach, Richard J Ing
A 27-year-old female with Trisomy 9 mosaicism presented to Children's Hospital Colorado for outpatient dental surgery under general anesthesia. The patient's past medical history was also significant for premature birth, gastroesophageal reflux, scoliosis and kyphosis, obesity, and developmental delay. Per her mother's report, the patient had no cardiac issues. She had undergone multiple previous general anesthetics, some of which documented respiratory complications such as laryngospasm, bronchospasm, and possible aspiration...
2017: Anesthesia Progress
https://www.readbyqxmd.com/read/28126337/reservations-about-the-selvester-qrs-score-in-left-bundle-branch-block-experience-in-patients-with-transcatheter-aortic-valve-implantation
#19
Thomas T Poels, Suzanne Kats, Leo Veenstra, Vincent van Ommen, Jos G Maessen, Frits W Prinzen
BACKGROUND: The Selvester QRS score (S-score) estimates myocardial scar using electrocardiographic criteria. We evaluated the S-score for left bundle branch block (LBBB). MATERIAL AND METHODS: Studied were 36 patients who developed persistent LBBB upon transcatheter aortic valve implantation (TAVI, TAVI-LBBB group) and 36 matched patients with persistent narrow QRS (TAVI-nQRS group). Electrocardiograms were recorded before and briefly after TAVI and during ~6months follow-up...
January 12, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28125405/av-nodal-reentrant-tachycardia-with-a-2-1-right-bundle-branch-block-missed-as-bidirectional-ventricular-tachycardia-in-the-first-superficial-evaluation
#20
Mohammad Ali Akbarzadeh, Isa Khaheshi, Mehdi Memaryan, Mohammad Parsa Mahjoob, Mohammadreza Naderian
A 95-year old woman was admitted to our emergency unit because of acute abdominal pain. After urgent surgery according to the acute abdomen, she was referred to intensive care unit (ICU) of the emergency unit as she was intubated. It was developed a run of new arrhythmia which was diagnosed by cardiology resident as bidirectional ventricular tachycardia due to beat to beat changing the axis of the QRS. However, a second and more precise evaluation of the abnormal ECG suggested a narrow supraventricular tachycardia, most probably AV nodal reentrant tachycardia with a 2:1 right bundle branch block...
January 25, 2017: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
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