keyword
MENU ▼
Read by QxMD icon Read
search

12-lead

keyword
https://www.readbyqxmd.com/read/28424890/left-atrial-electromechanical-conduction-time-predicts-atrial-fibrillation-in-patients-with-mitral-stenosis-a-5-year-follow-up-speckle-tracking-echocardiography-study
#1
Ozkan Candan, Cetin Gecmen, Arzu Kalayci, Cem Dogan, Emrah Bayam, Mehmet Ozkan
Prolonged left atrial electromechanical conduction time is related with atrial electrical remodeling, and is predictive of the development of atrial fibrillation. The aim of our study was to examine whether left atrial electromechanical conduction time (EMT) and left atrial strain as measured by speckle tracking echocardiography (STE) are predictors for the development of atrial fibrillation (AF) in patients with mitral stenosis (MS) at 5-year follow-up. A total of 81 patients (61% females; mean age 38.1 ± 12...
April 19, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28420762/resting-heart-rate-variability-and-exercise-capacity-in-type-1-diabetes
#2
Luke C Wilson, Karen C Peebles, Neil A Hoye, Patrick Manning, Catherine Sheat, Michael J A Williams, Gerard T Wilkins, Genevieve A Wilson, James C Baldi
People with type 1 diabetes (T1D) have lower exercise capacity (V̇O2max) than their age-matched nondiabetic counterparts (CON), which might be related to cardiac autonomic dysfunction. We examined whether Heart Rate Variability (HRV; indicator of cardiac autonomic modulation) was associated with exercise capacity in those with and without T1D. Twenty-three participants with uncomplicated T1D and 17 matched CON were recruited. Heart rate (HR; ECG), blood pressure (BP; finger photo-plethysmography), and respiratory rate (respiratory belt) were measured during baseline, paced-breathing and clinical autonomic reflex tests (CARTs); deep breathing, lying-to-stand, and Valsalva maneuver...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28420670/confirmed-early-myocardial-rupture-in-a-patient-with-pulseless-electrical-activity-pea-following-late-presentation-of-st-elevation-myocardial-infarction
#3
Baskar Sekar, Joe Martins, Sanjiv Petkar
A 69 year old male, an ex-smoker, was admitted with ongoing chest pain of 11 hours duration. Past medical history included treated hypertension and gastro-oesophageal reflux disease. He delayed seeking medical attention as he assumed the pain to be due to indigestion and kept taking antacids without much symptomatic relief. Clinical examination on arrival was unremarkable. Admission 12 lead electrocardiogram (ECG) was diagnostic of a recent anterolateral myocardial infarction (MI) (Figure 1a). Bedside trans-thoracic echocardiogram (TTE) confirmed an established anterolateral MI (Video 1, Figure 1b)...
April 18, 2017: Echo Research and Practice
https://www.readbyqxmd.com/read/28412843/continuous-ecg-monitoring-in-patients-with-acute-coronary-syndrome-or-heart-failure-easi-versus-gold-standard
#4
Loreto Lancia, Andrea Toccaceli, Cristina Petrucci, Silvio Romano, Maria Penco
The purpose of the study was to compare the EASI system with the standard 12-lead surface electrocardiogram (ECG) for the accuracy in detecting the main electrocardiographic parameters (J point, PR, QT, and QRS) commonly monitored in patients with acute coronary syndromes or heart failure. In this observational comparative study, 253 patients who were consecutively admitted to the coronary care unit with acute coronary syndrome or heart failure were evaluated. In all patients, two complete 12-lead ECGs were acquired simultaneously...
April 1, 2017: Clinical Nursing Research
https://www.readbyqxmd.com/read/28412673/effect-of-controlled-hypotension-on-myocardial-ischemia-marker-in-eye-nose-related-surgery
#5
Yuexi Jin, Wanna Jiang, Wenlian Ye, Aifen Jiang, Le Liu
We aimed to investigate the effect of different controlled hypotension levels on myocardial enzymes and myocardial ischemia protein in elderly hypertension patients, and then provide clinical evidence of suitable controlled hypotension level for them. Then, 45 elderly hypertension patients received elective eye-nose related surgery with nasal endoscope, who were randomly and evenly divided into three groups, including A, B and C groups, with mean arterial pressure (MAP) decreased by 20%, 30% and 40% respectively...
November 2016: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28405093/two-causes-in-one-patient-for-extremely-low-voltage-on-the-electrocardiogram
#6
William C Roberts, Melody Joy Sherwood, Paul A Grayburn
An 80-year-old woman is described with two different causes (pericardial effusion and cardiac amyloidosis) for low QRS voltage on the electrocardiogram. Total 12-lead QRS voltage (from the peak of the R wave to the nadir of either the Q or the S wave, whichever is deeper) was only 34 mm (10 mm standard in all leads), the lowest we have encountered among 331 previously reported patients with 10 different cardiac conditions.
April 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28403196/validation-of-automatic-measurement-of-qt-interval-variability
#7
Peter R Rijnbeek, Marten E van den Berg, Gerard van Herpen, Henk J Ritsema van Eck, Jan A Kors
BACKGROUND: Increased variability of beat-to-beat QT-interval durations on the electrocardiogram (ECG) has been associated with increased risk for fatal and non-fatal cardiac events. However, techniques for the measurement of QT variability (QTV) have not been validated since a gold standard is not available. In this study, we propose a validation method and illustrate its use for the validation of two automatic QTV measurement techniques. METHODS: Our method generates artificial standard 12-lead ECGs based on the averaged P-QRS-T complexes from a variety of existing ECG signals, with simulated intrinsic (QT interval) and extrinsic (noise, baseline wander, signal length) variations...
2017: PloS One
https://www.readbyqxmd.com/read/28394443/noninvasive-predictors-of-perioperative-atrial-arrhythmias-in-patients-with-tetralogy-of-fallot-undergoing-pulmonary-valve-replacement
#8
Daniel Cortez, Waseem Barham, Emily Ruckdeschel, Nandita Sharma, Anthony C McCanta, Johannes von Alvensleben, William H Sauer, Kathryn K Collins, Joseph Kay, Sonali Patel, Duy T Nguyen
BACKGROUND: Patients with tetralogy of Fallot (TOF) have increased risk of atrial arrhythmias. HYPOTHESIS: A measure of atrial dispersion, the P-wave vector magnitude (Pvm), can identify patients at risk for perioperative atrial flutter (AFL) or intra-atrial re-entrant tachycardia (IART) in a large TOF cohort. METHODS: We performed a blinded, retrospective analysis of 158 TOF patients undergoing pulmonary valve replacement between 1997 and 2015...
April 10, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28394409/evaluation-of-qtc-in-rett-syndrome-correlation-with-age-severity-and-genotype
#9
Jane Crosson, Siddharth Srivastava, Genila M Bibat, Siddharth Gupta, Aditi Kantipuly, Constance Smith-Hicks, Scott M Myers, Abanti Sanyal, Gayane Yenokyan, Joel Brenner, Sakkubai R Naidu
Rett syndrome (RTT) is caused by MECP2 mutations, resulting in various neurological symptoms. Prolonged corrected QT interval (QTc) is also reported and is a speculated cause of sudden death in RTT. The purpose of this study was to correlate QTc in RTT patients with age, clinical severity, and genotype. 100 RTT patients (98 females, 2 males) with MECP2 mutations underwent baseline neurological evaluation (KKI-RTT Severity Scale) and QTc measurement (standard 12 lead electrocardiogram) as part of our prospective natural history study...
April 10, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28392509/bioequivalence-and-pharmacokinetic-profiles-of-agomelatine-25-mg-tablets-in-healthy-chinese-subjects-a-four-way-replicate-crossover-study-demonstrating-high-intra-and-inter-individual-variations
#10
Cuiyun Li, Jing Xu, Yan Zheng, Guiling Chen, Jianmeng Wang, Liying Ma, Yan Qiao, Junqi Niu, Min Wu, Hong Zhang, Xiaojiiao Li, Hong Chen, Xiaoxue Zhu, Chengjiao Liu, Yanhua Ding
The present study was designed to assess the bioequivalence of two agomelatine formulations (25-mg tablets) in healthy Chinese male subjects. This single-dose, open-label, randomized, four-way replicate study with a 1-week washout period was conducted in 60 healthy Chinese male volunteers under fasting conditions. Blood samples were collected over a 12-h period after a single dose of the 25-mg agomelatine test (T) formulation or a reference (R) formulation, and the drug concentrations were assayed by liquid chromatography tandem mass spectrometry (LC-MS/MS)...
April 8, 2017: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28372709/tachyarrhythmias-and-bradyarrhythmias-differential-diagnosis-and-initial-management-in%C3%A2-the-primary-care-office
#11
REVIEW
Timothy Joseph Byrnes, Otto Costantini
Tachyarrhythmias and bradyarrhythmias are often seen in the outpatient setting. Patients can present minimally symptomatic or in extremis. Accurate diagnosis of the rhythm, plus a detailed clinical history, are critical for best management and optimal outcome. A 12-lead electrocardiogram is the cornerstone for diagnosis. Practitioners must identify patients who need immediate transport to an emergency department versus those who can safely wait for an outpatient specialty referral. This article reviews how to accurately diagnose and differentiate the most common tachyarrhythmias and bradyarrhythmias, the associated symptoms, and important concepts for the initial steps in the office management of such arrhythmias...
May 2017: Medical Clinics of North America
https://www.readbyqxmd.com/read/28364495/sexsomnia-a-specialized-non-rem-parasomnia
#12
Anne-Laure Dubessy, Smaranda Leu-Semenescu, Valérie Attali, Jean-Baptiste Maranci, Isabelle Arnulf
Introduction: To describe patients with sexsomnia and to contrast their clinical and sleep measures with those of healthy controls and sleepwalkers. Aims and Methods: Subjects referred for sexsomnia and for sleepwalking/night terror were interviewed, completed the Paris Arousal Disorder Severity Scale (PADSS), and were monitored 1-2 nights with video-polysomnography. Results: Seventeen patients (70.6% male, aged 17-76 years) had sexsomnia, with amnestic fondling of the bed partner (n = 11), complete sexual intercourse (n = 8), masturbation (n = 8), and spontaneous orgasm (n = 1)...
February 1, 2017: Sleep
https://www.readbyqxmd.com/read/28364267/utility-of-12-lead-and-signal-averaged-holter-electrocardiograms-after-pilsicainide-provocation-for-risk-stratification-in-brugada-syndrome
#13
Jun Kakihara, Masahiko Takagi, Yusuke Hayashi, Hiroaki Tatsumi, Atsushi Doi, Minoru Yoshiyama
Non-invasive risk stratification for ventricular fibrillation (VF) in Brugada syndrome (BrS) has not been fully evaluated. The aim of this study was to assess the utility of signal-averaged Holter electrocardiogram (Holter SAECG) and 12-lead Holter electrocardiogram (Holter ECG) after a pilsicainide provocation test for non-invasive risk stratification in BrS. We enrolled 30 consecutive patients with BrS [divided into 2 groups: the VF group, those with a previous history of VF (n = 10); and the non-VF group, those without a history of VF (n = 20)] and 10 control subjects without type 1 ECG...
March 31, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28358801/ecg-derived-spatial-qrs-t-angle-is-associated-with-icd-implantation-mortality-and-heart-failure-admissions-in-patients-with-lv-systolic-dysfunction
#14
Sarah Gleeson, Yi-Wen Liao, Clementina Dugo, Andrew Cave, Lifeng Zhou, Zina Ayar, Jonathan Christiansen, Tony Scott, Liane Dawson, Andrew Gavin, Todd T Schlegel, Patrick Gladding
BACKGROUND: Increased spatial QRS-T angle has been shown to predict appropriate implantable cardioverter defibrilIator (ICD) therapy in patients with left ventricular systolic dysfunction (LVSD). We performed a retrospective cohort study in patients with left ventricular ejection fraction (LVEF) 31-40% to assess the relationship between the spatial QRS-T angle and other advanced ECG (A-ECG) as well as echocardiographic metadata, with all-cause mortality or ICD implantation for secondary prevention...
2017: PloS One
https://www.readbyqxmd.com/read/28356306/effect-of-age-and-sex-on-the-qtc-interval-in-children-and-adolescents-with-type-1-and-2-long-qt-syndrome
#15
Arja S Vink, Sally-Ann B Clur, Ronald B Geskus, Andreas C Blank, Charlotte C A De Kezel, Masao Yoshinaga, Nynke Hofman, Arthur A M Wilde, Nico A Blom
BACKGROUND: In congenital long-QT syndrome, age, sex, and genotype have been associated with cardiac events, but their effect on the trend in QTc interval has never been established. We, therefore, aimed to assess the effect of age and sex on the QTc interval in children and adolescents with type 1 (LQT1) and type 2 (LQT2) long-QT syndrome. METHODS AND RESULTS: QTc intervals of 12-lead resting electrocardiograms were determined, and trends over time were analyzed using a linear mixed-effects model...
April 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28350720/pulmonary-embolism-mimicking-infectious-pleuritis
#16
Kenichi Tetsuhara, Satoshi Tsuji, Satoko Uematsu, Koichi Kamei
The diagnosis of pulmonary thromboembolism (PE) is often delayed because it is usually misdiagnosed as pneumonia or deep vein thrombosis. We report an unusual case of PE misdiagnosed as viral pleuritis on the first arrival at the emergency department (ED) in our hospital. A 14-year-old girl with no previous significant medical history was referred to the ED with pleuritic and chest pain with low-grade fever 4 days before admission.Echography showed a small amount of left pleural effusion. A 12-lead electrocardiogram was normal...
March 27, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28349167/evaluation-of-the-effect-of-the-egfr-antibody-drug-conjugate-abt-414-on-qt-interval-prolongation-in-patients-with-advanced-solid-tumors-likely-to-over-express-egfr
#17
Wijith P Munasinghe, Rajendar K Mittapalli, Hong Li, David M Hoffman, Kyle D Holen, Rajeev M Menon, Hao Xiong
PURPOSE: ABT-414 is an antibody-drug conjugate (ADC) being developed for the treatment of tumors harboring amplification of the epidermal growth factor receptor (EGFR). This study evaluated the potential of ABT-414 to prolong the QT interval as part of the initial phase 1 study (NCT01741727). METHODS: Data from patients who received ABT-414 monotherapy at a dose of 1-4 mg/kg once every 3 weeks or 1 or 1.5 mg/kg weekly for 2 out of every 3 weeks (alternate schedule) by intravenous infusion were included in the analysis of triplicate 12-lead ECGs obtained before dosing and through 168 h after dosing...
March 27, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28347451/the-role-of-computerized-diagnostic-proposals-in-the-interpretation-of-the-12-lead-electrocardiogram-by-cardiology-and-non-cardiology-fellows
#18
Tomas Novotny, Raymond Bond, Irena Andrsova, Lumir Koc, Martina Sisakova, Dewar Finlay, Daniel Guldenring, Jindrich Spinar, Marek Malik
INTRODUCTION: Most contemporary 12-lead electrocardiogram (ECG) devices offer computerized diagnostic proposals. The reliability of these automated diagnoses is limited. It has been suggested that incorrect computer advice can influence physician decision-making. This study analyzed the role of diagnostic proposals in the decision process by a group of fellows of cardiology and other internal medicine subspecialties. MATERIALS AND METHODS: A set of 100 clinical 12-lead ECG tracings was selected covering both normal cases and common abnormalities...
May 2017: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/28341542/qt-spatial-dispersion-and-sudden-cardiac-death-in-hypertrophic-cardiomyopathy-time-for-reappraisal
#19
Damiano Magrì, Caterina Santolamazza, Luca Limite, Vittoria Mastromarino, Matteo Casenghi, Paola Orlando, Erika Pagannone, Maria Beatrice Musumeci, Antonello Maruotti, Agnese Ricotta, Giada Oliviero, Gianfranco Piccirillo, Massimo Volpe, Camillo Autore
BACKGROUND: The 12-lead surface electrocardiographic (ECG) analysis is able to provide independent predictors of prognosis in several cardiovascular settings, including hypertrophic cardiomyopathy (HCM). The present single-center study investigated the possible ability of several ECG-derived variables in stratifying sudden cardiac death (SCD) risk and, possibly, in improving the accuracy of the 2014 European Society of Cardiology guidelines. METHODS: A total of 221 consecutive HCM outpatients were recruited and prospectively followed...
March 21, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28339570/frequency-of-different-electrocardiographic-abnormalities-in-a-large-cohort-of-spanish-workers
#20
Jorge Rodríguez-Capitán, Ana Fernández-Meseguer, José Manuel García-Pinilla, Eva Calvo-Bonacho, Manuel Jiménez-Navarro, Teresa García-Margallo, Fernando Cabrera-Bueno, Ignacio Echeverria-Lucotti, Juan José Gómez-Doblas, Eduardo De Teresa-Galván
Aims: Our aim was to describe the electrocardiographic findings of a large sample of Spanish workers from several different employment sectors. Methods and results: Between May 2008 and November 2010, 13 495 consecutive 12-lead resting electrocardiograms (ECGs) were obtained during health examinations of working adults aged 16-74 years in 5 cities in different regions of Spain. Of those, 13 179 ECGs suitable for interpretation were included in this study. All tracings were classified by the same cardiologist, according to the Minnesota Code criteria...
October 6, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
keyword
keyword
5744
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"