AnatomyOrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPsychiatry and PsychologyPhenomena and ProcessesDisciplines and OccupationsInformation ScienceHealth Care
Atrial FlutterAtrial FibrillationCatheter AblationHeart AtriaAnti-Arrhythmia AgentsElectric CountershockElectrocardiographyElectrophysiologic Techniques, CardiacPulmonary VeinsHeart Conduction SystemCardiac Pacing, ArtificialVentricular FibrillationPropafenoneAmiodaroneTricuspid ValveBody Surface Potential MappingAnticoagulantsAtrial FunctionAtrial AppendageWarfarinRefractory Period, ElectrophysiologicalHeart BlockProcainamidePericarditisFlecainideTachycardia, ParoxysmalAtrial Premature ComplexesTreatment OutcomeAtrial Function, RightTachycardia, SupraventricularAtrial Function, LeftRecurrenceFollow-Up StudiesTachycardiaAtrioventricular NodeElectrocardiography, AmbulatoryThromboembolismCryosurgeryDisopyramideTachycardia, Ectopic AtrialSotalolSick Sinus SyndromeArrhythmias, CardiacTime FactorsProspective StudiesPacemaker, ArtificialEchocardiography, TransesophagealStrokeElectrophysiologyVena Cava, InferiorDogsRisk FactorsHeart RateDigoxinWolff-Parkinson-White SyndromeArrhythmia, SinusEmbolismCoronary SinusHeart DiseasesAtrial Septumbeta-AlanineEchocardiographyFluoroscopyPostoperative ComplicationsCardiac Surgical ProceduresRetrospective StudiesCardiac CathetersInternational Normalized RatioBundle of HisAction PotentialsSinoatrial NodeIncidenceChronic DiseaseHydrops FetalisImpulse Control DisordersRisk AssessmentBepridilPredictive Value of TestsCardiac CatheterizationDefibrillators, ImplantableSurgery, Computer-AssistedMitral ValveHemorrhageTachycardia, Sinoatrial Nodal ReentryEquipment DesignTachycardia, VentricularEndocardiumTachycardia, Atrioventricular Nodal ReentryBradycardiaHeart FailureChi-Square DistributionAtrioventricular BlockSulfonamidesPericardiumButylscopolammonium BromideHeart Valve DiseasesElectrodesAspirinFetal DiseasesSignal Processing, Computer-Assisted
TachycardiaArrhythmiasConductionBradycardiaVentricular responseAfibPremature VentricularRight atrialCatheter-basedPersistentCardiacPulmonaryAblation procedureSymptomsType of arrhythmiaDysfunctionSinus nodeDepolarizationPatientsHeartCONCLUSIONSMitralLeftAbstractAdultsElectricalFocal impulseRapidProcedureIdentifyCommonAtrioventricularRiskTreatment
Tachycardia3
Arrhythmias5
  • This thickening, particularly after heart failure, increases the likely hood of atrial fibrillation and other arrhythmias. (holisticly.com)
  • Not only is nicotine from smoking potentially harmful, but chewing and inhaling second hand nicotine can increase the chances of developing short-term atrial fibrillation and other arrhythmias as well. (holisticly.com)
  • CARL pioneered computational mapping of 'chaotic' heart rhythm disturbances (arrhythmias), targeting mechanistic drivers for atrial and ventricular fibrillation (AF, VF) using machine learning and computational models. (stanford.edu)
  • Specific support has been via grants HL70529 and HL162260 for ventricular arrhythmias, and HL103800, HL83359, HL122384, HL149134, and several SBIR grants for atrial arrhythmias. (stanford.edu)
  • Premature Atrial Contractions (PACs) are amongst the most common forms of arrhythmias . (cardiachealth.org)
Conduction8
  • Verapamil HCl does not alter the normal atrial action potential or intraventricular conduction time, but depresses amplitude, velocity of depolarization and conduction in depressed atrial fibers. (drugs.com)
  • The purpose of this clinical study is to test the hypothesis that market released Cardiac Resynchronization Therapy (CRT) devices which contain the AdaptivCRT® (aCRT) algorithm have a superior outcome compared to standard CRT devices in CRT indicated patients with normal atrio-ventricular (AV) conduction and left bundle branch block (LBBB). (stanford.edu)
  • Which assists to increase the conduction velocity of nerve impulses? (fsu.edu)
  • Studies in this population have repeatedly demonstrated superior hemodynamics and outcomes compared to conventional pacing with the recruitment of the native conduction system. (stanfordchildrens.org)
  • The correlation between atrial conduction abnormalities and paroxysmal atrial fibrillation has been previously described1. (romanianjournalcardiology.ro)
  • While the P wave duration is linked to prolonged intra and in-teratrial conduction, more insight can be obtained if the variation in P wave duration is measured between different ECG leads as a marker of non-homogeneous atrial conduction. (romanianjournalcardiology.ro)
  • The aims of this study were to (1) examine development of sinus node dysfunction (SND), atrial and ventricular tachyarrhythmias, and (2) study progression of atrioventricular conduction abnormalities in young adult patients with repaired cAVSD. (1library.net)
  • Patients' medical files were evaluated for occurrence of SND, atrioventricular conduction block (AVB), atrial and ventricular tachyarrhythmias. (1library.net)
Bradycardia3
  • Studies have found that 50-85% of conditioned athletes have benign sinus bradycardia, as compared to 23% of the general population studied. (wikipedia.org)
  • An AV-junctional rhythm, or atrioventricular nodal bradycardia, is usually caused by the absence of the electrical impulse from the sinus node. (wikipedia.org)
  • ATP1A3-Encoded Sodium-Potassium ATPase Subunit Alpha 3 D801N Variant Is Associated With Shortened QT Interval and Predisposition to Ventricular Fibrillation Preceded by Bradycardia. (harvard.edu)
Ventricular response2
Afib2
  • Atrial fibrillation, or AFib, is the most common type of arrhythmia , in which the hearts two upper chambers do not beat in sync with the two lower chambers. (healthyheartworld.com)
  • Feeling tired, weak, confused, or dizzy are all symptoms of AFib, but the most common is a quivering or fluttering heartbeat. (healthybpclub.com)
Premature Ventricular1
  • Premature ventricular contractions sometimes called premature beats or extra heartbeats are early electrical impulses that occur in the lower chambers of your heart. (see785.com)
Right atrial4
  • 5 ]-[ 8 ] Methods of targeting left, and right atrial areas of complex, fractionated or high-frequency electrograms have been developed to improve AF success rates. (jafib.com)
  • P wave duration, amplitude and dispersion (P d ) were calculated from ECG and left and right atrial diameters, area, volumes, atrial emptying function and atrial function index were assessed by 2D echocardiography. (romanianjournalcardiology.ro)
  • 0.0001), and no correlation with right atrial index volume (r=0.2167, p=0.0881). (romanianjournalcardiology.ro)
  • One defibrillating electrode was located intravascularly in the superior vena cava (SVC) at the right atrial junction. (implantable-device.com)
Catheter-based3
  • Pulmonary Vein Stenosis and Pulmonary Hypertension Following a Catheter-Based Radiofrequency Ablation for Atrial Fibrillation: A Case Report. (stanford.edu)
  • PV stenosis is a rare but recognized complication of catheter-based radiofrequency ablation (RFA) for atrial fibrillation (AF). (stanford.edu)
  • Since the seminal report by Dr. Michel Haïssaguerre, catheter-based ablation for atrial fibrillation (AF) has evolved and been highly effective for the elimination of atrial fibrillation (AF) compared to antiarrhythmic medications. (jafib.com)
Persistent5
  • AIMS: REDO-FIRM evaluated safety and effectiveness of conventional vs. focal impulse and rotor modulation (FIRM)-guided ablation of recurrent persistent or paroxysmal atrial fibrillation (AF) after an initial AF ablation procedure. (bvsalud.org)
  • We performed a prospective randomized trial by assigning 92 patients with persistent AF in 1:1 ratio to pulmonary-vein isolation plus ablation of electrograms showing complex fractionated activity (45 patients), or pulmonary-vein isolation plus additional linear ablation across the left atrial roof and mitral valve isthmus (47 patients). (jafib.com)
  • Among patients with persistent atrial fibrillation, we found no difference in maintenance of sinus rhythm in either linear ablation or ablation of complex fractionated electrograms was performed in addition to pulmonary vein isolation in short- and long-term follow-up. (jafib.com)
  • However, due to a relatively high recurrence rate, especially in patients with persistent AF, other ablation techniques have been developed, involving a PV antral isolation, often complemented by ablation lines, and ablation of complex fractionated atrial electrograms. (jafib.com)
  • Long-term persistent atrial fibrillation is defined as an abnormal heart rhythm that lasts over a year without interruption. (healthybpclub.com)
Cardiac5
  • By maintaining the atrial contribution to cardiac output, symptoms of heart failure and overall quality of life can improve. (medscape.com)
  • Clinical trials have found that smokers have an increased risk of developing cardiac arrhythmia's compared to non-smokers. (holisticly.com)
  • A potentially lethal cardiac arrhythmia that is characterized by uncoordinated extremely rapid firing of electrical impulses (400-600/min) in HEART VENTRICLES. (harvard.edu)
  • Such asynchronous ventricular quivering or fibrillation prevents any effective cardiac output and results in unconsciousness (SYNCOPE). (harvard.edu)
  • Cardiac tumors, chiefly left atrial myxoma, are a rare cause of mitral regurgitation. (health.am)
Pulmonary3
  • INTRODUCTION: Cryoballoon ablation (CBA) aiming at pulmonary vein isolation (PVI) became a standardized atrial fibrillation (AF) ablation procedure. (bvsalud.org)
  • Pulmonary vein isolation remains the cornerstone of atrial fibrillation (AF) ablation. (jafib.com)
  • In acute regurgitation, left atrial pressure rises abruptly, leading to pulmonary edema if severe. (health.am)
Ablation procedure1
Symptoms2
  • A person who experiences symptoms of a fast, fluttering, and/or skipped beat should consult with his or her doctor right away to get treatment before they become worse in case there's something more serious going on like atrial fibrillation which requires immediate medical attention. (see785.com)
  • Atrial Fibrillation may happen rarely or every now and then, or it may become an ongoing or long-term heart problem that lasts for years and the amazing thing is that some people who have AF may not even feel symptoms. (ericbakker.com)
Type of arrhythmia2
  • Ventricular fibrillation - This is an incredibly dangerous type of arrhythmia where rapid and chaotic electrical signals cause the heart's ventricles to quiver (fibrillate) preventing blood from being pumped around your body. (aerjournal.com)
  • Atrial fibrillation (A-fib) is a type of arrhythmia (irregular and typically fast heartbeat) that can cause blood clots in the heart. (ericbakker.com)
Dysfunction2
  • As AF contributes to pathologic atrial and ventricular remodeling, restoration of sinus rhythm can slow or, in some cases, reverse atrial dilatation and left ventricular dysfunction. (medscape.com)
  • These findings underlie the link between impaired electrical activation of the atria and atrial mecha-nical dysfunction as assessed by both atrial emptying fraction and atrial function index. (romanianjournalcardiology.ro)
Sinus node3
  • However in patients with sick sinus syndrome, verapamil HCl may interfere with sinus node impulse generation and may induce sinus arrest or sinoatrial block. (drugs.com)
  • A delay or complete block of the electrical impulse as it travels from the sinus node to the ventricles. (healthyheartworld.com)
  • Mapping of sinus node activation indicates that at faster rates, the SA impulse originates in the superior portion of the SA node, or extranodally, while at slower rates, it arises from the inferior portion of the node or, once again, extranodally [ 7 ]. (medilib.ir)
Depolarization1
Patients11
  • Acceleration of ventricular rate and/or ventricular fibrillation has been reported in patients with atrial flutter or atrial fibrillation and a coexisting accessory AV pathway following administration of verapamil. (drugs.com)
  • We analysed patients' BAT acceptance and the outcome of BAT patients compared with HFrEF patients solely treated with a guideline-directed medical therapy (GDMT) and studied effects of sacubitril/valsartan (ARNI). (bvsalud.org)
  • Outcomes were compared against reference patients with VF who were unable or unwilling to undergo catheter ablation. (stanford.edu)
  • In the AFFIRM study (Atrial Fibrillation Follow-up Investigation of Rhythm Management), an insignificant trend toward increased mortality was noted in the rate control group, and importantly, no evidence suggested that the rhythm-control strategy protected patients from stroke. (medscape.com)
  • One of the major management decisions in AF (and atrial flutter) is determining the risk of stroke and appropriate anticoagulation regimen for low-, intermediate-, and high-risk patients. (medscape.com)
  • Atrial dimensions were higher and the reservoir function was altered in patients with PAF compared with patients in sinus rhythm. (romanianjournalcardiology.ro)
  • Conclusions - P wave dispersion and 2DE atrial function indices could identify susceptible PAF patients. (romanianjournalcardiology.ro)
  • Some reports showed that the measurement in sinus rhythm of P wave dispersion (Pd) and P wave duration together with atrial echocardiographic indices might be a useful, easy and noninvasive clinical tool to identify patients at risk of developing PAF3. (romanianjournalcardiology.ro)
  • Aim of the study To determine whether specifi c ECG parameters and transthoracic echocardiographic atrial measurements could help in predicting the risk for developing PAF in patients without structural car-diac disease. (romanianjournalcardiology.ro)
  • Outcomes of Patients With Takotsubo Syndrome Compared With Type 1 and Type 2 Myocardial Infarction. (harvard.edu)
  • In acute mitral regurgitation, patients are in sinus rhythm rather than atrial fibrillation and have little or no enlargement of the left atrium, no calcification of the mitral valve, no associated mitral stenosis , and in many cases little left ventricular dilation. (health.am)
Heart13
  • Impulses originating within or below the bundle of His in the AV node will produce a wide QRS complex with heart rates between 20 and 40 BPM. (wikipedia.org)
  • These procedures involve the removal or destruction of tissue in the heart that generates these abnormal electrical impulses. (vejthani.com)
  • These days, scar lines are also created in the heart using hot or cold radiation, which stops the electrical impulses that cause the arrhythmia. (vejthani.com)
  • Heart ablation carries a higher likelihood of side effects when performed surgically compared to when it's done using a catheter. (vejthani.com)
  • If you have atrial fibrillation, your heart may beat much faster, up to 100 to 175 times a minute, or much slower. (healthyheartworld.com)
  • The impulse then travels to the atrioventricular node, located near the middle of your heart. (healthybpclub.com)
  • From there, the impulse moves to your ventricles, causing them to contract and pump blood out of your heart to your lungs and the rest of your body. (healthybpclub.com)
  • The SA node directs the timing of the electrical impulses and keeps your heart pumping smoothly. (healthybpclub.com)
  • Atrial fibrillation - The most common type of heart arrhythmia, with the heart beating irregularly and faster than normal. (aerjournal.com)
  • I wrote this page to explain about atrial fibrillation, one of the more common reasons your heart may "play up" and make you feel that something is not quite right. (ericbakker.com)
  • Atrial fibrillation, or AF, is the most common type of irregular beating of the heart you will experience. (ericbakker.com)
  • Immediate treatment of atrial flutter centers on slowing the heart rate with. (masur.com.ar)
  • The heart is constituted by three types of muscle: atrial, ventricular, and specialized excitatory and conducting fibers. (bvsalud.org)
CONCLUSIONS1
  • Conclusions - VESA is associated with a reduction in the combined endpoint compared with the non-ablation reference group. (stanford.edu)
Mitral1
Left3
  • Procedure, left atrial, and fluoroscopy times were shorter in group A as compared to group B. Dose area product was significantly higher in group A (2911 vs. 2072 cGyxcm2 , p (bvsalud.org)
  • x-ray shows left atrial and ventricular enlargement. (health.am)
  • Compared right radial with left radial and femoral artery looking for delay. (abcmedicalnotes.com)
Abstract1
  • Abstract: Objectives - The aim of this study was to determine if specific electrocardiographic parameters and echo-cardiographic atrial indices could help in predicting the risk for developing paroxysmal atrial fibrillation (PAF). (romanianjournalcardiology.ro)
Adults2
  • Antidepressants increased the risk compared to placebo of suicidal thinking and behavior (suicidality) in children, adolescents, and young adults in short-term studies of major depressive disorder (MDD) and other psychiatric disorders. (rxlist.com)
  • there was a reduction in risk with antidepressants compared to placebo in adults aged 65 and older. (rxlist.com)
Electrical7
  • This dysrhythmia also may occur when the electrical impulses from the SA node fail to reach the AV node because of SA or AV block. (wikipedia.org)
  • This is a safety mechanism when a lack of electrical impulse or stimuli from the atrium occurs. (wikipedia.org)
  • Electrical Substrate Ablation for Refractory Ventricular Fibrillation: Results of the AVATAR Study. (stanford.edu)
  • 39. Compare and contrast electrical synapses with the traditional chemical synapse. (fsu.edu)
  • Your electrical impulses are chaotic, leading to an irregular and rapid heartbeat. (healthybpclub.com)
  • 1. - This tiny regular electrical signal starts in a group of cells called the sino-atrial (SA) node. (ericbakker.com)
  • It is due to the premature discharge of an electrical impulse in the atrium, causing a premature contraction. (cardiachealth.org)
Focal impulse1
  • The lab has co-invented intellectual property owned by University of California Regents and Stanford University, of which Focal Impulse and Rotor Mapping (FIRM) was licensed to a start-up founded by Dr. Narayan (Topera), which was acquired by Abbott Laboratories in 2014. (stanford.edu)
Rapid1
Procedure1
  • One concern is that an extensive MAZE procedure can render the atrial severely hypocontractile, which may elevate the risk of embolic stroke even if AF is substantively suppressed. (medscape.com)
Identify1
  • Use WebMD's Pill Identifier to find and identify any over-the-counter or prescription drug, pill, or medication by color, shape, or imprint and easily compare pictures of multiple drugs. (quierountoldo.es)
Common1
Atrioventricular1
  • LBBB plus superior atrioventricular prevent had been clearly correlated together with permanent pacemaker implantation (p smaller when compared with 2.0001). (pd-1-pd-l1inhibitor2.com)
Risk1
Treatment3
  • You may need treatment for paroxysmal atrial fibrillation, or it may happen infrequently enough that your doctor recommends just monitoring your condition. (healthybpclub.com)
  • Treatment with long Phase comparing statins with a learn that liver disease the plaque accumulation coronary develop a treatment plan. (masur.com.ar)
  • CHANTIX has been demonstrated to increase the likelihood of abstinence from smoking for as long as one year compared to treatment with placebo. (drugs-library.com)