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Hideki Hayashi, Qi Wu, Minoru Horie
BACKGROUND: Prolonged QRS duration on electrocardiogram (ECG) has been known as a poor prognostic marker. However, little is known about association between progressive intraventricular conduction disturbance and cardiovascular prognosis. METHODS: From among a database containing 359,737 12-lead ECG recordings, patients whose QRS duration progressively increased from <120 msec to ≥120 msec were selected using software. The prognosis of patients was searched by medical record...
2016: PloS One
Anthony Matta, Kamal Kallab, Alexandre Kharma
AIMS: Data concerning the correlation between the absence of septal q waves and significant stenosis of proximal left anterior descending (LAD) artery shows conflicting results. This retrospective study was conducted to show that absence of septal q waves in leads V5-V6 could be of value in predicting significant coronary artery disease (CAD) and mainly significant proximal LAD coronary artery stenosis. METHODS: Our study included 500 consecutive patients who had coronary angiography, retrospectively chosen, excluding patients with acute coronary syndromes, and patients with abnormal ECGs (abnormal QRS duration, pathological q waves and hemiblocks)...
January 2016: Le Journal Médical Libanais. the Lebanese Medical Journal
Kohei Hasegawa, Tomofumi Takaya, Shumpei Mori, Fumitaka Soga, Hachidai Takahashi, Daisuke Terashita, Hiromasa Otake, Ken-Ichi Hirata
A 73-year-old man was admitted to our hospital because of chest pain at rest. Electrocardiography (ECG) showed an ST-segment depression, a negative U-wave in the precordial leads, and a right axis deviation (RAD) tendency. Coronary angiography revealed occlusion of the right coronary artery. Collateral flow from the jeopardized left anterior descending artery to the posterior descending artery (PDA) was fair. After successful revascularization, improvement in the ECG findings was noted. Since blood supply to the left posterior fascicle is dependent on the PDA, the RAD tendency could be explained by the presence of a transient ischemic left posterior hemiblock...
May 25, 2016: International Heart Journal
Milena S Marcolino, Daniel M Palhares, Lorena R Ferreira, Antonio L Ribeiro
BACKGROUND: Chagas disease (ChD) used to be a disease restricted to Latin America, but has become a worldwide problem due to migration of infected individuals to developed countries. Electrocardiography has been considered an essential exam to evaluate ChD patients. OBJECTIVE: This study sought to identify prevalent electrocardiographic abnormalities in a large sample of ChD patients evaluated in the primary care setting. METHODS: This retrospective observational study assessed all consecutive digital 12-lead electrocardiograms (ECG) performed by the Telehealth Network of Minas Gerais, Brazil, from January 1 to December 31, 2011...
September 2015: Global Heart
R Otero-López, M Rivero-Garvía, J Márquez-Rivas, J Valencia
PURPOSE: Hemivertebrae, associated with a failure in the formation and fusion of vertebral body ossification nuclei, are a common cause of thoracic or lumbar scoliosis. A cervical location is rare and even rarer as a cause of cervical subluxation in flexion and extension (for which only one previous case has been found). CASE REPORT: We report on the case of a 7-year-old female patient, who was examined for a cervical fusion defect, consisting of a posterior C4 hemivertebra and a left hemiblock from C5 to C7...
February 2016: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
Mark C Bicket, Eva K Ritzl, Rafael J Tamargo, C David Mintz
Intraoperative monitoring of nervous system pathways, including assessing the integrity of descending motor pathways with motor-evoked potentials, is often performed in intracranial and spine operations to reduce the risk of iatrogenic neurological impairment. We present a case in which intraoperative monitoring with motor-evoked potentials resulted in complete heart block in a patient with a history of hemiblock. Neuromonitoring has been associated with arrhythmias in patients with ostensibly normal conduction systems, and we propose that monitoring personnel, anesthesiologists, and surgeons need to be aware of this risk and exercise caution when monitoring motor-evoked potentials in patients with known conduction deficits...
November 15, 2014: A & A Case Reports
Dimitri Tsialtas, Maria G Bolognesi, Tiziano Tecchio, Matteo Azzarone, Federico Quaini, Roberto Bolognesi
BACKGROUND: Preoperative cardiac assessment may essentially contribute to estimate the operative risk in vascular surgery.This study was undertaken to depict the clinical conditions and cardiac status in patients before elective major vascular surgery. PATIENTS AND METHODS: 143 patients with asymptomatic critical aortic abdominal aneurysm, 119 with high-grade carotid stenosis, and 138 with advanced symptomatic ischemia due to peripheral artery disease were assigned to surgical revascularization...
November 2014: VASA. Zeitschrift Für Gefässkrankheiten
Mouhamad Nasser, Jad Degheili, Mohamed Kanj, Nadim Kanj
SESSION TITLE: Cardiovascular Global Case ReportsSESSION TYPE: Global Case ReportPRESENTED ON: Tuesday, October 28, 2014 at 01:30 PM - 02:30 PMINTRODUCTION: Electrical alternans is an electrocardiographic phenomenon consisting of alternating QRS amplitude or axis in any or all leads. The most readily recognized and understood form of electrical alternans is QRS alternans associated with pericardial effusion. Here we present a case of atypical pattern of electrical alternans in a patient with severe bronchial asthma exacerbation and this is to our knowledge represents a second case of this unusual electrocardiographic sign after a previous case reported by Dr...
October 1, 2014: Chest
S Marrakchi, I Kammoun, S Kachboura
Background. It is important to recognise Wolff-Parkinson-White (WPW) syndrome in electrocardiograms (ECG), as it may mimic ischaemic heart disease, ventricular hypertrophy, and bundle branch block. Recognising WPW syndrome allows for risk stratification, the identification of associated conditions, and the institution of appropriate management. Objective. The present case showed that electrophysiological study is indicated in patients with abnormal ECG and syncope. Case Report. A 40-year-old man with Wolff-Parkinson-White syndrome was presented to emergency with syncope...
2014: Case Reports in Medicine
George C M Siontis, Peter Jüni, Thomas Pilgrim, Stefan Stortecky, Lutz Büllesfeld, Bernhard Meier, Peter Wenaweser, Stephan Windecker
BACKGROUND: Atrioventricular (AV) conduction disturbances requiring permanent pacemaker (PPM) implantation may complicate transcatheter aortic valve replacement (TAVR). Available evidence on predictors of PPM is sparse and derived from small studies. OBJECTIVES: The objective of this study was to provide summary effect estimates for clinically useful predictors of PPM implantation after TAVR. METHODS: We performed a systematic search for studies that reported the incidence of PPM implantation after TAVR and that provided raw data for the predictors of interest...
July 15, 2014: Journal of the American College of Cardiology
Maria Clara Noman de Alencar, Manoel Otávio da Costa Rocha, Márcia Maria de Oliveira Lima, Henrique Silveira Costa, Giovane Rodrigo Sousa, Renata de Carvalho Bicalho Carneiro, Guilherme Canabrava Rodrigues Silva, Fernando Vieira Brandão, Lucas Jordan Kreuser, Antonio Luiz Pinho Ribeiro, Maria Carmo Pereira Nunes
BACKGROUND: Chagas disease patients with right bundle-branch block (RBBB) have diverse clinical presentation and prognosis, depending on left ventricular (LV) function. Autonomic disorder can be an early marker of heart involvement. The heart rate recovery (HRR) after exercise may identify autonomic dysfunction, with impact on therapeutic strategies. This study was designed to assess the HRR after symptom-limited exercise testing in asymptomatic Chagas disease patients with RBBB without ventricular dysfunction compared to patients with indeterminate form of Chagas disease and healthy controls...
2014: PloS One
Yanhe Zhu, Bingqi Lai, Xiaolin Niu, Jin Wei, Wuhong Tan, Xinfeng Wang
OBJECTIVE: This study aims to determine whether baseline electrocardiography (ECG) abnormalities, the appearance of new ECG abnormalities, or other clinical characteristics are associated with increased rates of progression to chronic Keshan disease (KD) among patients with latent KD. METHODS: Four hundred and fourteen new latent KD patients from a monitored population in China were diagnosed and then followed for 10 years. Baseline and 10-year ECG abnormalities were classified according to the Minnesota Code as major and minor...
2014: Journal of Epidemiology
Claudia Stöllberger, Daniel Gerger, Peter Jirak, Christian Wegner, Josef Finsterer
BACKGROUND: Left ventricular hypertrabeculation/noncompaction (LVHT) is frequently associated with neuromuscular disorders (NMDs) and electrocardiographic (ECG) abnormalities. The prognostic relevance of newly developed ECG abnormalities in LVHT and its dependency on NMD is largely unknown. Aim of the following retrospective cohort study in LVHT patients was thus to assess the development of new ECG abnormalities and its dependency on NMD and survival. METHODS: Included were patients in whom (a) LVHT was diagnosed between 1995 and 2011, (b) baseline ECG recordings (bECG), and (c) follow-up ECG recordings (fECG) were available...
November 2014: Annals of Noninvasive Electrocardiology
C P Gale, A John Camm
No abstract text is available yet for this article.
September 15, 2014: Heart: Official Journal of the British Cardiac Society
Hanfei Zhang, Shaun G Goodman, Gabriel P Steg, Andrzej Budaj, Jose Lopez-Sendon, Paul Dorian, Thao Huynh, Iqwal Mangat, Graham C Wong, Frederick A Spencer, Andrew T Yan
OBJECTIVE: We aimed to study the relationships between left anterior hemiblock (LAHB) and the patient characteristics, management, and clinical outcomes in the setting of acute coronary syndromes (ACS). METHODS: Admission ECGs of patients enrolled in the Global Registry of Acute Coronary Events (GRACE) ECG substudy, and the Canadian ACS Registry I, were analysed independently at a blinded core laboratory. Multivariable logistic regression analysis was performed to assess the independent associations between LAHB on the admission ECG and in-hospital and 6-month mortality...
September 15, 2014: Heart: Official Journal of the British Cardiac Society
Alma Vargas-Martínez, Víctor Reyna-López, Francisco Rodríguez-Ortega
BACKGROUND: Even though Federal Labor Law includes carbon monoxide poisoning in the list of occupational diseases, the registration of this intoxication rarely occurs in a work environment. The objective was to determine the association of this poisoning with cardiovascular and otoneurologic disorders, in order to establish adequately this diagnosis as a work-related illness. METHODS: Cross-sectional survey performed in a group of broiler production workers, compared with a control group (n = 54)...
January 2014: Revista Médica del Instituto Mexicano del Seguro Social
Antonio Luiz P Ribeiro, Milena S Marcolino, Ronald J Prineas, Maria Fernanda Lima-Costa
BACKGROUND: Electrocardiography has been considered an important tool in the management of Chagas disease (ChD) patients, although its value in elderly infected patients is unknown. This study was designed to investigate the prevalence and prognostic value of electrocardiographic abnormalities in Trypanosoma cruzi infected and noninfected older adults. METHODS AND RESULTS: We studied 1462 participants in Bambuí City, Brazil, with electrocardiogram (ECG) records classified by the Minnesota Code...
2014: Journal of the American Heart Association
Marcello Costantini
Disorders of intraventricular conduction (bundle branch block and hemiblock) are usually stable and remain unchanged irrespective of heart rate. Not infrequently, however, their appearance is related to the duration of the cardiac cycle, so that they appear and disappear with changes in heart rate. This may not even represent a pathological phenomenon, since sudden and consistent changes in cardiac cycle can result, even physiologically, in aberrant conduction. However, when a bundle branch block appears intermittently for simple and progressive increments, or even deceleration, of the sinus rate, this is related to a true bundle branch pathology, i...
January 2014: Giornale Italiano di Cardiologia
Hilda T Draeger, Shervin Assassi, Roozbeh Sharif, Emilio B Gonzalez, Brock E Harper, Frank C Arnett, Ameena Manzoor, Richard A Lange, Maureen D Mayes
OBJECTIVE: To evaluate the prognostic significance of baseline electrocardiogram (ECG) abnormalities in a multiethnic cohort of patients with early systemic sclerosis (SSc) and to determine the serological, clinical, and echocardiogram correlates of ECG findings. METHODS: SSc patients with disease duration of≤5 years were enrolled in the GENISOS (Genetics versus Environment in Scleroderma Outcome Study) cohort. At the first visit, a standard 12 lead ECG was obtained along with demographic information, clinical data, and autoantibodies...
2013: PloS One
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