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Electrocardiogram

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https://www.readbyqxmd.com/read/28936441/correlation-between-electrocardiographic-changes-and-coronary-findings-in-patients-with-acute-myocardial-infarction-and-single-vessel-disease
#1
Abdallah Sanaani, Srikanth Yandrapalli, George Jolly, Rajiv Paudel, Howard A Cooper, Wilbert S Aronow
BACKGROUND: Correlation of ST-segment elevation on the 12-lead electrocardiogram (ECG) with the expected affected coronary territory is established in patients with ST-elevation myocardial infarction (STEMI). In patients with non-ST-elevation myocardial infarction (NSTEMI), correlation of ischemic ECG abnormalities with the affected coronary territory has not been well-established. We sought to investigate the correlation of electrocardiographic abnormalities with the location of 1-vessel obstructive coronary artery disease (CAD) in patients with both STEMI and NSTEMI...
September 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28935953/very-low-density-lipoprotein-of-metabolic-syndrome-modulates-gap-junctions-and-slows-cardiac-conduction
#2
Hsiang-Chun Lee, Chih-Chieh Chen, Wei-Chung Tsai, Hsin-Ting Lin, Yi-Lin Shiao, Sheng-Hsiung Sheu, Bin-Nan Wu, Chu-Huang Chen, Wen-Ter Lai
Very-low-density lipoproteins (VLDL) is a hallmark of metabolic syndrome (MetS) and each manifestation of MetS is related to atrial fibrillation (AF) risks. Slowed atrial conduction is a mechanism of AF in MetS. We hypothesized that VLDL can modulate and reduce atrial gap junctions. VLDLs were separated from normal (Normal-VLDL) and MetS (MetS-VLDL) individuals. VLDLs (15 µg/g) and equivalent volumes of saline (CTL) were injected respectively to C57BL/6 mice for 6 weeks. Electrocardiograms demonstrated that MetS-VLDL induced prolongation of P wave (P = 0...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28934223/ursodeoxycholic-acid-prevents-ventricular-conduction-slowing-and-arrhythmia-by-restoring-t-type-calcium-current-in-fetuses-during-cholestasis
#3
Oladipupo Adeyemi, Anita Alvarez-Laviada, Francisca Schultz, Effendi Ibrahim, Michael Trauner, Catherine Williamson, Alexey V Glukhov, Julia Gorelik
BACKGROUND: Increased maternal serum bile acid concentrations in intrahepatic cholestasis of pregnancy (ICP) are associated with fetal cardiac arrhythmias. Ursodeoxycholic acid (UDCA) has been shown to demonstrate anti-arrhythmic properties via preventing ICP-associated cardiac conduction slowing and development of reentrant arrhythmias, although the cellular mechanism is still being elucidated. METHODS: High-resolution fluorescent optical mapping of electrical activity and electrocardiogram measurements were used to characterize effects of UDCA on one-day-old neonatal and adult female Langendorff-perfused rat hearts...
2017: PloS One
https://www.readbyqxmd.com/read/28933098/-reevaluation-for-systematic-reviews-for-traditional-chinese-medicine-injections-for-coronary-disease
#4
Xiu-Ping Yin, Yan-Ming Xie, Xing Liao, Man Luo
To reevaluate the systematic reviews for traditional Chinese medicine(TCM) injections for treating coronary disease, data in four Chinese databases and PubMed, Embase, Cochrane Library, Wed of Science OVID from inception until May 2016 were searched. We extracted data according to the AMSTAR and PRISMA checklists to evaluate the methodological quality and reporting characteristics of included literatures. A total of 69 systematic reviews were included, involving 24 TCM injections, which showed certain efficacy in treating coronary disease, and whose main outcome indexes included alleviation of symptoms of angina pectoris and electrocardiogram...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28933043/quantifying-the-effect-of-uncertainty-in-input-parameters-in-a-simplified-bidomain-model-of-partial-thickness-ischaemia
#5
Barbara M Johnston, Sam Coveney, Eugene T Y Chang, Peter R Johnston, Richard H Clayton
Reduced blood flow in the coronary arteries can lead to damaged heart tissue (myocardial ischaemia). Although one method for detecting myocardial ischaemia involves changes in the ST segment of the electrocardiogram, the relationship between these changes and subendocardial ischaemia is not fully understood. In this study, we modelled ST-segment epicardial potentials in a slab model of cardiac ventricular tissue, with a central ischaemic region, using the bidomain model, which considers conduction longitudinal, transverse and normal to the cardiac fibres...
September 20, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28932490/prolonged-qrs-duration-on-surface-electrocardiogram-is-associated-with-left-ventricular-restrictive-filling-pattern
#6
Turan Erdoğan, Murtaza Emre Durakoğlugil, Yüksel Çiçek, Mustafa Çetin, Hakan Duman, Ömer Şatiroğlu, Şükrü Çelik
BACKGROUND: Prolonged QRS duration is associated with decreased left ventricular (LV) systolic function. However, the relation between LV restrictive filling pattern (RFP) and QRS duration has not been investigated yet. The purpose of our study was to assess this relationship. METHODS: We analyzed standard 12-lead surface electrocardiogram (ECG) of 155 consecutive patients. Mitral inflow and septal tissue velocities were obtained using the apical 4-chamber view with pulsed Doppler echocardiography...
March 2017: Interventional Medicine & Applied Science
https://www.readbyqxmd.com/read/28932359/coronary-angiography-findings-in-cardiac-arrest-patients-with-non-diagnostic-post-resuscitation-electrocardiogram-a-comparison-of-shockable-and-non-shockable-initial-rhythms
#7
Pedro Martínez-Losas, Pablo Salinas, Carlos Ferrera, María Teresa Nogales-Romo, Francisco Noriega, María Del Trigo, Iván Javier Núñez-Gil, Luis Nombela-Franco, Nieves Gonzalo, Pilar Jiménez-Quevedo, Javier Escaned, Antonio Fernández-Ortiz, Carlos Macaya, Ana Viana-Tejedor
AIM: To investigate the impact of coronary artery disease in a cohort of patients resuscitated from cardiac arrest with non-diagnostic electrocardiogram. METHODS: From March 2004 to February 2016, 203 consecutive patients resuscitated from in or out-of-hospital sudden cardiac arrest and non-diagnostic post-resuscitation electrocardiogram (defined as ST segment elevation or pre-sumably new left bundle branch block) who underwent invasive coronary angiogram during hospitalization were included...
August 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28932163/preparedness-of-dammam-primary-health-care-centers-to-deal-with-emergency-cases
#8
Sanaa S M Alsaad, Salma H S Abu-Grain, Dalia Y M El-Kheir
OBJECTIVES: The objective of the study was to assess the availability of human and nonhuman resources for emergency medical services (EMSs) at the primary health care (PHC) level. MATERIALS AND METHODS: A cross-sectional study with mixed research methods (quantitative and qualitative) was carried out in governmental PHC centers in Dammam, Eastern Province of Saudi Arabia, between September 2014 and January 2015. Using systematic random sampling technique, 13 out of 26 PHC centers were included in the study...
September 2017: Journal of Family & Community Medicine
https://www.readbyqxmd.com/read/28930184/use-of-wavelet-transform-to-detect-compensated-and-decompensated-stages-in-the-congestive-heart-failure-patient
#9
Pratibha Sharma, Kimberly Newman, Carlin S Long, A J Gasiewski, Frank Barnes
This research work is aimed at improving health care, reducing cost, and the occurrence of emergency hospitalization in patients with Congestive Heart Failure (CHF) by analyzing heart and lung sounds to distinguish between the compensated and decompensated states. Compensated state defines stable state of the patient but with lack of retention of fluids in lungs, whereas decompensated state leads to unstable state of the patient with lots of fluid retention in the lungs, where the patient needs medication. Acoustic signals from the heart and the lung were analyzed using wavelet transforms to measure changes in the CHF patient's status from the decompensated to compensated and vice versa...
September 20, 2017: Biosensors
https://www.readbyqxmd.com/read/28928990/detection-of-a-left-superior-vena-cava-during-a-pacemaker-implantation-in-cotonou
#10
A Sonou, M Hounkponou, L Codjo, P M Adjagba, C Houehanou, H Dohou, S Assani, Y Tchabi, M Houenassi
Persistent left superior vena cava (LSVC) is a rare congenital anomaly. Its prevalence in the general population is 0.1 to 0.5%. LSVC is 5 times rarer when accompanied by an absence of the right superior vena cava (RSVC). We present the case of a 54-year-old man who carries a persistent LSVC without RSVC. Clinically, this patient presented a regular bradycardia at 40 per minute associated with a heart failure syndrome. The electrocardiogram diagnosed a complete atrioventricular block and transthoracic echocardiography showed dilated left heart cavities and a left ventricular ejection fraction of 50%...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28928069/comments-on-the-new-international-criteria-for-electrocardiographic-interpretation-in-athletes
#11
Luis Serratosa-Fernández, Domingo Pascual-Figal, María Dolores Masiá-Mondéjar, María Sanz-de la Garza, Zigor Madaria-Marijuan, Juan Ramón Gimeno-Blanes, Carmen Adamuz
Sudden cardiac death is the most common medical cause of death during the practice of sports. Several structural and electrical cardiac conditions are associated with sudden cardiac death in athletes, most of them showing abnormal findings on resting electrocardiogram (ECG). However, because of the similarity between some ECG findings associated with physiological adaptations to exercise training and those of certain cardiac conditions, ECG interpretation in athletes is often challenging. Other factors related to ECG findings are race, age, sex, sports discipline, training intensity, and athletic background...
September 16, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28925529/cerebrovascular-response-to-the-cold-pressor-test-the-critical-role-of-carbon-dioxide
#12
Michael M Tymko, Thijs P Kerstens, Kevin W Wildfong, Philip N Ainslie
In addition to increasing sympathetic nervous activity, blood pressure, and cerebral blood flow (CBF), the cold pressor test (CPT) stimulates pain receptors, which may increase ventilation above metabolic demand; this response likely reduces the partial pressure of end-tidal carbon dioxide (PET CO2 ), and will attenuate elevations in CBF. We hypothesized: (1) CPT would elicit hyperventilation, effectively lowering PET CO2 ; (2) the CBF response will be elevated during an isocapnic (controlled PET CO2 ), compared to a poikilocapnic CPT (uncontrolled PET CO2 ); (3) In response to CPT, the common carotid artery (CCA) will vasodilatate, while the internal carotid artery (ICA) will remain unchanged to help regulate CBF...
September 19, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28924989/media-attention-regarding-sudden-cardiac-death-associated-with-domperidone-use-does-not-affect-in-hospital-ecg-recording
#13
Florine Berger, Selma Saâïd, Teun van Gelder, Bruno Stricker, Matthijs Becker, Patricia van den Bemt
PURPOSE: In March 2013, regulatory warnings concerning the potential risks of domperidone caused considerable media attention in the Netherlands. The aim of the study was to assess the effect of regulatory warnings and the resulting media hype on the frequency of electrocardiogram (ECG) monitoring of inpatients using domperidone. We also studied the effect on the frequency of prescribing domperidone by physicians. METHODS: A 2-centre, observational, retrospective cohort study was performed...
September 19, 2017: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/28924519/acute-pericarditis-descriptive-study-and-etiology-determination-in-a-predominantly-african-american-population
#14
Ahmad Awan, Fasil Tiruneh, Priscilla Wessly, Akbar Khan, Hasan Iftikhar, Sydney Barned, Daniel Larbi
INTRODUCTION ---Acute pericarditis is the most commonly encountered manifestation of pericardial disease (incidence: 0.2 percent to 0.5 percent in hospitalized patients). However, data regarding manifestations, workup, and the management of acute pericarditis in the African American population is lacking. This study aims to collect and analyze more clinical data related to acute pericarditis in this understudied population. METHODOLOGY We conducted a retrospective chart review of all patients managed for acute pericarditis at a university hospital serving a predominantly African American population...
July 6, 2017: Curēus
https://www.readbyqxmd.com/read/28924202/coupling-and-dynamics-of-cortical-and-autonomic-signals-are-linked-to-central-inhibition-during-the-wake-sleep-transition
#15
Christine Ulke, Jue Huang, Justus T C Schwabedal, Galina Surova, Roland Mergl, Tilman Hensch
Maintaining temporal coordination across physiological systems is crucial at the wake-sleep transition. As shown in recent studies, the degree of coordination between brain and autonomic arousal influences attention, which highlights a previously unrecognised point of potential failure in the attention system. To investigate how cortical and autonomic dynamics are linked to the attentive process we analysed electroencephalogram, electrocardiogram and skin conductance data of 39 healthy adults recorded during a 2-h resting-state oddball experiment...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28920895/matched-filtering-for-heart-rate-estimation-on-compressive-sensing-ecg-measurements
#16
Giulia Da Poian, Christopher J Rozell, Riccardo Bernardini, Roberto Rinaldo, Gari D Clifford
OBJECTIVE: Compressive Sensing (CS) has recently been applied as a low complexity compression framework for long-term monitoring of electrocardiogram signals using Wireless Body Sensor Networks. Long-term recording of ECG signals can be useful for diagnostic purposes and to monitor the evolution of several widespread diseases. In particular, beat to beat intervals provide important clinical information, and these can be derived from the ECG signal by computing the distance between QRS complexes (R-peaks)...
September 14, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28920131/reversible-causes-in-cardiovascular-collapse-at-the-emergency-department-using-ultrasonography-revive-us
#17
Mui Teng Chua, Gene Wh Chan, Win Sen Kuan
INTRODUCTION: Ultrasonographic evaluation of patients in cardiac arrest is currently not protocolised in the advanced cardiac life support (ACLS) algorithm. Potentially reversible causes may be identified using bedside ultrasonography that is ubiquitous in most emergency departments (EDs). This study aimed to evaluate the incidence of sonographically detectable reversible causes of cardiac arrest by incorporating an ultrasonography protocol into the ACLS algorithm. Secondary objectives include rates of survival to hospital admission, hospital discharge, and 30-day mortality...
August 2017: Annals of the Academy of Medicine, Singapore
https://www.readbyqxmd.com/read/28918212/an-%C3%AE-glucosidase-inhibitor-could-reduce-t-wave-alternans-in-type-2-diabetes-patients
#18
Kazuo Eguchi, Takahiro Komori, Toshinobu Saito, Satoshi Hoshide, Kazuomi Kario
BACKGROUND: We tested the hypothesis that an alpha-glucosidase inhibitor (α-GI), miglitol, is effective in protecting the cardiovascular system in type 2 diabetes mellitus (T2DM). METHODS: We studied 19 hospitalized heart disease patients with T2DM in whom we performed continuous glucose monitoring, Holter electrocardiogram, and ambulatory blood pressure (BP) monitoring simultaneously for 48h. The α-GI miglitol was administered for half of the study period by a cross-over fashion...
August 15, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28917688/a-randomized-trial-of-pocket-echocardiography-integrated-mobile-health-device-assessments-in-modern-structural-heart-disease-clinics
#19
Sanjeev P Bhavnani, Srikanth Sola, David Adams, Ashwin Venkateshvaran, P K Dash, Partho P Sengupta
OBJECTIVES: This study sought to determine whether mobile health (mHealth) device assessments used as clinical decision support tools at the point-of-care can reduce the time to treatment and improve long-term outcomes among patients with rheumatic and structural heart diseases (SHD). BACKGROUND: Newly developed smartphone-connected mHealth devices represent promising methods to diagnose common diseases in resource-limited areas; however, the impact of technology-based care on long-term outcomes has not been rigorously evaluated...
September 9, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28916172/biometric-verification-by-cross-correlation-analysis-of-12-lead-ecg-patterns-ranking-of-the-most-reliable-peripheral-and-chest-leads
#20
Vessela Krasteva, Irena Jekova, Roger Abächerli
BACKGROUND: Electrocardiogram (ECG)-based biometrics relies on the most stable and unique beat patterns, i.e. those with maximal intra-subject and minimal inter-subject waveform differences seen from different leads. We investigated methodology to evaluate those differences, aiming to rank the most prominent single and multi-lead ECG sets for biometric verification across a large population. METHODS: A clinical standard 12-lead resting ECG database, including 460 pairs of remote recordings (distanced 1year apart) was used...
August 16, 2017: Journal of Electrocardiology
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