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https://www.readbyqxmd.com/read/29667277/arrhythmic-manifestation-of-peripartum-cardiomyopathy-case-report
#1
Patryk Siedlecki, Małgorzata Kurpesa, Barbara Uznańska-Loch, Ewa Trzos, Jarosław Damian Kasprzak
We report a case of 26-year-old woman, with arrhythmic manifestation of peripartum cardiomyopathy with moderate heart failure. Ventricular arrhythmia recorded in ambulatory Holter ECG (premature ventricular contractions) was most severe during pregnancy, reduced when beta-blocker therapy was initiated and almost completely resolved after delivery. Then, 1 year after hospitalization in Cardiology Department, recurrence was observed with recorded short episode of nonsustained ventricular tachycardia.
April 17, 2018: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29667218/early-repolarization-is-involved-in-ventricular-fibrillation-in-patients-with-variant-angina
#2
Tetsuji Shinohara, Hidekazu Kondo, Akira Fukui, Hidefumi Akioka, Yasushi Teshima, Kunio Yufu, Mikiko Nakagawa, Naohiko Takahashi
BACKGROUND: Variant angina (VA) is caused by reversible coronary artery spasm, which is characterized by chest pain with ST segment elevations on a standard 12-lead electrocardiogram (ECG) at rest. VA attack often causes lethal ventricular arrhythmia. The early repolarization (ER) pattern is associated with ventricular fibrillation (VF). However, whether the ER pattern is involved in VF in patients with VA is not known. We investigated the association between the ER pattern and VF in patients with VA...
April 17, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29667117/ecg-derived-respiration-based-on-iterated-hilbert-transform-and-hilbert-vibration-decomposition
#3
Hemant Sharma, K K Sharma
Monitoring of the respiration using the electrocardiogram (ECG) is desirable for the simultaneous study of cardiac activities and the respiration in the aspects of comfort, mobility, and cost of the healthcare system. This paper proposes a new approach for deriving the respiration from single-lead ECG based on the iterated Hilbert transform (IHT) and the Hilbert vibration decomposition (HVD). The ECG signal is first decomposed into the multicomponent sinusoidal signals using the IHT technique. Afterward, the lower order amplitude components obtained from the IHT are filtered using the HVD to extract the respiration information...
April 17, 2018: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/29667032/contrast-opacification-difference-of-mural-artery-and-the-transluminal-attenuation-gradient-on-coronary-computed-tomography-angiography-for-detection-of-systolic-compression-of-myocardial-bridge
#4
Yuanliang Xie, Xiang Wang, Wei Xie, Faxiang Chen, Shubo Gao, Yikai Xu
PURPOSE: Myocardial bridges (MB) have traditionally been considered a benign condition, but recent studies have demonstrated that the clinical complications can be dangerous. The transluminal attenuation gradient (TAG) obtained from coronary computed tomography angiography (CCTA) data (Retrospective ECG-triggered method) has been used in detecting significant stenosis in coronary artery caused by atherosclerosis. Contrast opacification difference (COD) was the parameters calculated as the change between attenuation of mural artery and the median attenuation of presumptive vessel segment; it was evaluated along with TAGstandardized (TAGs) and MB length for predicting MB with systolic compression (MB-SC) in patients diagnosed as MB in left anterior descending coronary artery (LAD) by CCTA or invasive coronary angiograph (ICA)...
April 17, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29667014/automatically-computed-ecg-algorithm-for-the-quantification-of-myocardial-scar-and-the-prediction-of-mortality
#5
Patrick Badertscher, Ivo Strebel, Ursina Honegger, Nicolas Schaerli, Deborah Mueller, Christian Puelacher, Max Wagener, Roger Abächerli, Joan Walter, Zaid Sabti, Lorraine Sazgary, Stella Marbot, Jeanne du Fay de Lavallaz, Raphael Twerenbold, Jasper Boeddinghaus, Thomas Nestelberger, Nikola Kozhuharov, Tobias Breidthardt, Samyut Shrestha, Dayana Flores, Carmela Schumacher, Damian Wild, Stefan Osswald, Michael J Zellweger, Christian Mueller, Tobias Reichlin
BACKGROUND: Myocardial scar is associated with adverse cardiac outcomes. The Selvester QRS-score was developed to estimate myocardial scar from the 12-lead ECG, but its manual calculation is difficult. An automatically computed QRS-score would allow identification of patients with myocardial scar and an increased risk of mortality. OBJECTIVES: To assess the diagnostic and prognostic value of the automatically computed QRS-score. METHODS: The diagnostic value of the QRS-score computed automatically from a standard digital 12-lead was prospectively assessed in 2742 patients with suspected myocardial ischemia referred for myocardial perfusion imaging (MPI)...
April 17, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29666670/analysis-of-a-pulse-rate-variability-measurement-using-a-smartphone-camera
#6
András Bánhalmi, János Borbás, Márta Fidrich, Vilmos Bilicki, Zoltán Gingl, László Rudas
Background: Heart rate variability (HRV) provides information about the activity of the autonomic nervous system. Because of the small amount of data collected, the importance of HRV has not yet been proven in clinical practice. To collect population-level data, smartphone applications leveraging photoplethysmography (PPG) and some medical knowledge could provide the means for it. Objective: To assess the capabilities of our smartphone application, we compared PPG (pulse rate variability (PRV)) with ECG (HRV)...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29666583/summation-and-cancellation-effects-on-qrs-and-st-segment-changes-induced-by-simultaneous-regional-myocardial-ischemia
#7
Miquel Vives-Borrás, Esther Jorge, Gerard Amorós-Figueras, Xavier Millán, Dabit Arzamendi, Juan Cinca
Simultaneous ischemia in two myocardial regions is a potentially lethal clinical condition often unrecognized whose corresponding electrocardiographic (ECG) patterns have not yet been characterized. Thus, this study aimed to determine the QRS complex and ST-segment changes induced by concurrent ischemia in different myocardial regions elicited by combined double occlusion of the three main coronary arteries. For this purpose, 12 swine were randomized to combination of 5-min single and double coronary artery occlusion: Group 1: left Circumflex (LCX) and right (RCA) coronary arteries ( n = 4); Group 2: left anterior descending artery (LAD) and LCX ( n = 4) and; Group 3: LAD and RCA ( n = 4)...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29666572/characterization-of-peripheral-activity-states-and-cortical-local-field-potentials-of-mice-in-an-elevated-plus-maze-test
#8
Toya Okonogi, Ryota Nakayama, Takuya Sasaki, Yuji Ikegaya
Elevated plus maze (EPM) tests have been used to assess animal anxiety levels. Little information is known regarding how physiological activity patterns of the brain-body system are altered during EPM tests. Herein, we monitored cortical local field potentials (LFPs), electrocardiograms (ECGs), electromyograms (EMGs), and respiratory signals in individual mice that were repeatedly exposed to EPM tests. On average, mouse heart rates were higher in open arms. In closed arms, the mice occasionally showed decreased heart and respiratory rates lasting for several seconds or minutes, characterized as low-peripheral activity states of peripheral signals...
2018: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29666101/solitary-cardiac-metastasis-from-primary-oral-squamous-cell-carcinoma-presenting-as-st-elevation-mi
#9
Hiren Patel, Michael Francke, Heather Stahura, Mohammad El-Hajjar, Joshua Schulman-Marcus
Cardiac metastases from oral squamous cell carcinoma (SCC) are rare, especially in the absence of systemic metastasis. We describe a case of a patient presenting with chest pain and ECG abnormalities concerning for ST-elevation myocardial infarction that eventually was found to have an incidental right ventricular mass on chest CT angiogram. Ultimately, she had an intracardiac echocardiography-assisted biopsy diagnosis of isolated cardiac metastasis from primary oral SCC. The extent of the disease precluded any surgical intervention, and the patient subsequently transitioned to hospice care...
April 17, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29666066/association-of-peripheral-artery-disease-with-incident-atrial-fibrillation-the-aric-atherosclerosis-risk-in-communities-study
#10
Wobo Bekwelem, Faye L Norby, Sunil K Agarwal, Kunihiro Matsushita, Josef Coresh, Alvaro Alonso, Lin Y Chen
BACKGROUND: Although peripheral artery disease as defined by ankle-brachial index (ABI) is associated with incident atrial fibrillation (AF), questions remain about the risk of AF in borderline ABI (>0.90 to <1.0) or noncompressible arteries (>1.4). We evaluated the association of borderline ABI and ABI >1.4 in the ARIC (Atherosclerosis Risk in Communities) study, a population-based prospective cohort study. METHODS AND RESULTS: We included 14 794 participants (age, 54...
April 17, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29665757/severe-brady-arrhythmias-in-systemic-lupus-erythematosus-prevalence-etiology-and-associated-factors
#11
K Tselios, D D Gladman, P Harvey, J Su, M B Urowitz
Background Severe brady-arrhythmias, requiring a permanent pacemaker (PPM), have been sparsely reported in systemic lupus erythematosus (SLE). The aim of this study was to describe the characteristics of such arrhythmias in a defined lupus cohort. Patients and methods The database of the Toronto Lupus Clinic ( n = 1366) was searched for patients who received a PPM. Demographic, clinical, immunological and therapeutic variables along with electrocardiographic (ECG) and echocardiographic findings (based on the last available test prior to PPM) were analyzed...
January 1, 2018: Lupus
https://www.readbyqxmd.com/read/29665648/ischemia-reperfusion-injury-in-male-guinea-pigs-an-efficient-model-to-investigate-myocardial-damage-in-cardiovascular-complications
#12
Divya Dasagrandhi, Arul Salomee Kamalabai R, Anusuyadevi Muthuswamy, Angela Marie Lennox, Tamilselvan Jayavelu, Vasudharani Devanathan, Jayachandran Kesavan Swaminathan
Myocardial ischemia/reperfusion (I/R) injury is the major problem that aggravates cardiac damage. Several established animal models fail to explain the similarity in disease mechanism and progression as seen in humans; whereas guinea pig shows high similarity in cardiovascular parameters. Hence, current study is aimed to develop an animal model using guinea pigs that may best correlate with disease mechanism of human myocardial I/R injury. Male guinea pigs were randomized into three groups: normal diet (ND), high fat diet (HFD) and sham; fed with respective diets for 90 days...
March 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29664430/-kounis-syndrome-a-paradoxal-non-st-elevation-myocardial-infarction-case-after-triamcinolone-treatment-for-dermatitis
#13
Mücahid Yılmaz, Hasan Korkmaz
Kounis syndrome is defined as the clinical development of acute coronary syndrome caused by the activation of inflammatory cells due to an allergy, hypersensitivity, anaphylaxis, or anaphylactic reaction. Corticosteroids that are used in the treatment of many inflammatory conditions may paradoxically cause allergic reactions and even anaphylaxis. This article is a description of the case of a 52-yearold female patient who had a non-ST elevation myocardial infarction after the administration of triamcinolone that was relieved with antihistaminic treatment...
April 2018: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/29663941/using-the-oculocardiac-reflex-to-characterize-autonomic-imbalance-in-a-naturally-occurring-canine-model-of-valvular-insufficiency
#14
Bruna C Brüler, Thayane C Vieira, Marcela Wolf, Stephany B Lucina, Fabiano Montiani-Ferreira, Marlos G Sousa
Congestive heart failure (CHF) is characterized by reduced heart rate variability. Although various methods to achieve parasympathetic withdrawal and sympathetic activation have been documented, stimulation of the vagal nerve (that is, vagal maneuvers) has not often been used to assess the autonomic impairment associated with disease progression in veterinary species. In this study, we investigated cardiac autonomic control in a naturally occurring canine model of mitral insufficiency by means of individual responses to oculocardiac reflex...
April 2, 2018: Comparative Medicine
https://www.readbyqxmd.com/read/29663861/amyloid-cardiomyopathy-a-hidden-heart-failure-cause-that-is-often-misdiagnosed
#15
Yale Tung-Chen, Miguel-Ángel Arnau
BACKGROUND: Congestive heart failure (CHF) is a very common condition, especially in the elderly, characterized by dyspnea, orthopnea, nocturnal paroxysmal dyspnea, and peripheral edema. CLINICAL PRESENTATION AND INTERVENTION: We report the case of a 76-year-old with CHF symptoms for the last 3 months. The ECG and transthoracic echocardiogram were suggestive of CHF due to amyloid cardiomyopathy. After cardiac MRI, a positive Congo red staining of subcutaneous fat aspiration and a negative genetic testing for mutant transthyretin, senile amyloid cardiomyopathy (ATTRw) was expected...
April 17, 2018: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29663449/mild-hypothermia-33%C3%A2-c-increases-the-inducibility-of-atrial-fibrillation-an-in-vivo-large-animal-model-study
#16
Martin Manninger, Alessio Alogna, David Zweiker, Birgit Zirngast, Stefan Reiter, Viktoria Herbst, Heinrich Maechler, Burkert M Pieske, Frank R Heinzel, Helmut Brussee, Heiner Post, Daniel Scherr
OBJECTIVE: Application of therapeutic mild hypothermia in patients after resuscitation, often accompanied by myocardial infarction, cardiogenic shock and systemic inflammation may impact on cardiac rhythm. We therefore tested susceptibility to atrial arrhythmias during hyperthermia (HT, 40.5°C), normothermia (NT, 38.0°C) and mild hypothermia (MH, 33.0°C). METHODS: Nine healthy, anesthetized closed-chest landrace pigs were instrumented with a quadripolar stimulation catheter in the high right atrium and a decapolar catheter in the coronary sinus...
April 16, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29663176/serum-magnesium-and-risk-of-incident-heart-failure-in-older-men-the-british-regional-heart-study
#17
Sasiwarang Goya Wannamethee, Olia Papacosta, Lucy Lennon, Peter H Whincup
To examine the association between serum magnesium and incident heart failure (HF) in older men and investigate potential pathways including cardiac function, inflammation and lung function. Prospective study of 3523 men aged 60-79 years with no prevalent HF or myocardial infarction followed up for a mean period of 15 years, during which 268 incident HF cases were ascertained. Serum magnesium was inversely associated with many CVD risk factors including prevalent atrial fibrillation, lung function (FEV1 ) and markers of inflammation (IL-6), endothelial dysfunction (vWF) and cardiac dysfunction [NT-proBNP and cardiac troponin T (cTnT)]...
April 17, 2018: European Journal of Epidemiology
https://www.readbyqxmd.com/read/29662704/diagnosis-of-anomalous-origin-of-the-left-coronary-artery-from-the-pulmonary-artery-with-echocardiography-and-digital-subtraction-angiography
#18
Haiyan Yang, Jinqing Li, Xiaojuan Ji
Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a common coronary artery anomaly associated with high mortality and may lead to sudden death if left unrecognized and untreated. This report describes an 8-year-old female who had cardiac murmur but with no clinical symptoms. Electrocardiogram (ECG) was normal, but echocardiography made the diagnosis of ALCAPA. Digital subtraction angiography (DSA) with cardiac catheterization angiography (CAG) confirmed the diagnosis, and finally, the patient received surgery...
2018: Case Reports in Cardiology
https://www.readbyqxmd.com/read/29661666/pseudo-wellens-syndrome-and-intermittent-left-bundle-branch-block-in-a-case-of-acute-cholecystitis
#19
Steffen Grautoff, Martin Balog, Guenther Winde
We present a case of a 54-year-old male patient who was admitted to our Emergency Department (ED) with localized epigastric pain. Inflammation markers, ultrasound, and CT scan were inconsistent with an initial diagnosis of cholecystitis. However, there was additional evidence of cholecystolithiasis. The ECG showed new anterior biphasic T waves typical for a Wellens' type A ECG. Additionally, the patient had an intermittent left bundle branch block (LBBB). The diagnostic challenges in differentiating possible diagnoses will be described, to which in this case, were either acute cholecystitis or acute coronary syndrome (ACS)...
April 7, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29661665/combining-early-post-resuscitation-eeg-and-hrv-features-improves-the-prognostic-performance-in-cardiac-arrest-model-of-rats
#20
Chenxi Dai, Zhi Wang, Liang Wei, Gang Chen, Bihua Chen, Feng Zuo, Yongqin Li
OBJECTIVE: Early and reliable prediction of neurological outcome remains a challenge for comatose survivors of cardiac arrest (CA). The purpose of this study was to evaluate the predictive ability of EEG, heart rate variability (HRV) features and the combination of them for outcome prognostication in CA model of rats. METHODS: Forty-eight male Sprague-Dawley rats were randomized into 6 groups (n=8 each) with different cause and duration of untreated arrest. Cardiopulmonary resuscitation was initiated after 5, 6 and 7min of ventricular fibrillation or 4, 6 and 8min of asphyxia...
April 9, 2018: American Journal of Emergency Medicine
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