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Mechanical dyssynchrony provides the clue Erwan DONAL
Mechanical dyssynchrony provides the clue Erwan DONAL

... indices of mechanical dyssynchrony. SRSsept and IVMD better represent LV dyssynchrony amenable to CRT and better predict CRT response than the indices assessing time-to-peak deformation or motion. ...
Atrial Fibrillation
Atrial Fibrillation

... AF begets more AF ...
Computer Simulation and Experimental Assessment of Cardiac Electrophysiology Brochure
Computer Simulation and Experimental Assessment of Cardiac Electrophysiology Brochure

... A leading edge look at the dynamic field of computer modeling of cardiac electrophysiology. This book is among the first to give a comprehensive overview of the promising and rapidly growing field of computer modeling of the heart. The success of this new field strongly depends on the establishment ...
A novel, minimally invasive, segmental myocardial infarction with a
A novel, minimally invasive, segmental myocardial infarction with a

... Choi BR, Koren G. A novel, minimally invasive, segmental myocardial infarction with a clear healed infarct borderzone in rabbits. Am J Physiol Heart Circ Physiol 302: H2321–H2330, 2012. First published March 23, 2012; doi:10.1152/ajpheart.00031.2012.—Ventricular arrhythmias in the setting of a heale ...
Dilated cardiomyopathies in dogs
Dilated cardiomyopathies in dogs

... Taurine is the most abundant amino-acid in the heart and is thought to regulate intracellular calcium kinetics. It also eliminates oxygen free radicals in myocardial cells, thereby protecting integrity of cell membranes and vital organelles. Taurine deficiency, with a low plasma taurine level has be ...
Fontan failure associated with a restrictive systemic
Fontan failure associated with a restrictive systemic

... of cardiac output. A study on diastolic function in patients with Fontan circulation demonstrated a similar reduction in ventricular compliance.5 The finding in our case that this reduced compliance was not associated with any myocardial fibrosis or hypertrophy suggests that it was not primarily the ...
Electrical Risk Stratification After STEMI
Electrical Risk Stratification After STEMI

... All primary SCD prevention ICD recommendations apply only to patients who are receiving optimal medical therapy and have reasonable expectation of survival with good functional capacity for more than 1 year. † See Section 3.2.4, “Hypertrophic Cardiomyopathy,” in the full-text guidelines for definiti ...
Amiodarone-Induced Third Degree Atrioventricular Block and
Amiodarone-Induced Third Degree Atrioventricular Block and

... is described. To the best of our knowledge, this is the first case showing an association of intravenous amiodarone-induced third degree atrioventricular block and extreme QT interval prolongation generating torsade des pointes in a patient with paroxysmal atrial fibrillation who required an implant ...
Ventricular Tachycardia in Structurally Normal Hearts: Recognition
Ventricular Tachycardia in Structurally Normal Hearts: Recognition

... tachycardia.1 Structural heart disease can be ruled out if the ECG (except in Brugada syndrome and long QT syndrome), echocardiogram, and coronary arteriogram collectively are normal.2 However, MRI can detect theses structural abnormalities in the presence of all other imaging diagnostic techniques ...
Implementation of Body Surface Potential Map of QRST Integral
Implementation of Body Surface Potential Map of QRST Integral

... Approximately  350,000  people  die  of  sudden  cardiac  death  every  year  in  the  United  States  [1].   Sudden   deaths   are   responsible   for   half   of   the   deaths   related   to   cardiovascular   disease,   and   are   prim ...
APHRS News No. 18 - Asia Pacific Heart Rhythm Society
APHRS News No. 18 - Asia Pacific Heart Rhythm Society

... can be initiated instead of anti-platelet agents, resulting in better protection for recurrent stroke. It will be more effective to identify AF before a stroke occurs, such that primary stroke (and heart failure) prevention can be started early. Several prospective studies have examined the outcome ...
ECG Monitoring in Theatre - e-safe
ECG Monitoring in Theatre - e-safe

... widely used anaesthetic monitors, and in addition to displaying arrhythmias it can also be used to detect myocardial ischaemia, electrolyte imbalances, and assess pacemaker function. A 12 lead ECG recording will provide much more information than is available on a theatre ECG monitor, and should whe ...
Managing Atrial Fibrillation - Scioto County Medical Society
Managing Atrial Fibrillation - Scioto County Medical Society

... amiodarone, further reducing the odds for AF recurrence after cardioversion by 45% (p = 0.01) and in patients on medical therapy by 63% (p <0.00001). RAS inhibition is an emerging treatment for the primary and secondary prevention of AF Schneider MP, et. Al. J Am Coll Cardiol. 2010 May 25;55(21):229 ...
Quantitative assessment of left ventricular function with dual
Quantitative assessment of left ventricular function with dual

... exclusion or inclusion of trabeculae into the left ventricular blood pool. We used two different semiautomatic software tools for the evaluation, in CT a tool which is based on a volumetric region-growing algorithm, and in MRI a software tool that calculates the volumes from short-axis slices by mul ...
Document
Document

... The Human Heart Beat The heart is a hollow, cone shaped muscular organ •Approximately the size of your clenched fist •Beats approximately 40 million times per year (60-100 times per minute) •Works as a pump that pushes blood around your body ...
EKG Recognition: When to Worry
EKG Recognition: When to Worry

... AASM Cardiac Scoring Rules • Score sinus tachycardia during sleep for a sustained sinus heart rate of greater than 90 beats per minute (bpm) for adults • Score wide complex tachycardia for a rhythm lasting a minimum of 3 consecutive beats at a rate of greater than 100 bpm with QRS duration of great ...
Case Report Study on the distribution characteristics of affected
Case Report Study on the distribution characteristics of affected

... the 21 patients who mostly failed to obtain a clear diagnosis before admission, only three patients were transferred to our hospital due to the reason of “suspected NVM”. The total rate of missed diagnosis and misdiagnosis in the initial diagnosis was 85.7%. Among these patients, nine patients were ...
Boxer dog cardiomyopathy: an update
Boxer dog cardiomyopathy: an update

... diastole, the R on T phenomenon, is believed to be dangerous, because the nadir of the ventricular fibrillation threshold occurs at about the time that ...
Pressure and Volume Changes in the Cardiac
Pressure and Volume Changes in the Cardiac

... in the Heart L.O: to interpret graphs on the cardiac cycle Starter: What animal has the highest blood pressure in the whole wide world? ...
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Introduction

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Abnormal Myocardial Enhancement
Abnormal Myocardial Enhancement

... necessary. When there is a clear diagnostic picture with self-limited disease, however, cross-sectional imaging is Page 26 ...
Arrhythmias - Ipswich-Year2-Med-PBL-Gp-2
Arrhythmias - Ipswich-Year2-Med-PBL-Gp-2

... – QRS is narrow and preceded by p wave – Can be normal in well-conditioned athletes at rest or children during sleep ...
View Abstract - Association of Black Cardiologists
View Abstract - Association of Black Cardiologists

... Multicenter Investigation of Limitation of Infarct Size (MILIS) study noted that rupture was 9.2 times more likely to occur in patients who had no prior history of myocardial infarction, STelevation or Q-wave development on initial ECG, and a peak CK-MB level greater than 150 IU/L (3). Several other ...
Suzanne "Shine" Tobias Admin Coordinator  Tel
Suzanne "Shine" Tobias Admin Coordinator Tel

... on pulsed Doppler tracings. During expiration, reciprocal changes occur. Similar respirophasic variations on pulsed Doppler can be seen in pulmonary embolism, right ventricular infarction, and COPD . ...
Surviving Left Ventricular Free Wall Rupture after Elective Left Heart
Surviving Left Ventricular Free Wall Rupture after Elective Left Heart

... Multicenter Investigation of Limitation of Infarct Size (MILIS) study noted that rupture was 9.2 times more likely to occur in patients who had no prior history of myocardial infarction, STelevation or Q-wave development on initial ECG, and a peak CK-MB level greater than 150 IU/L (3). Several other ...
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Ventricular fibrillation



Ventricular fibrillation (V-fib or VF) is a condition in which there is uncoordinated contraction of the cardiac muscle of the ventricles in the heart, making them quiver rather than contract properly. Ventricular fibrillation is the most commonly identified arrhythmia in cardiac arrest patients. While there is some activity, the lay person is usually unable to detect it by palpating (feeling) the major pulse points of the carotid and femoral arteries. Such an arrhythmia is only confirmed by electrocardiography. Ventricular fibrillation is a medical emergency that requires prompt Advanced Life Support interventions. If this arrhythmia continues for more than a few seconds, it will likely degenerate further into asystole (""flatline""). This condition results in cardiogenic shock and cessation of effective blood circulation. As a consequence, sudden cardiac death (SCD) will result in a matter of minutes. If the patient is not revived after a sufficient period (within roughly 5 minutes at room temperature), the patient could sustain irreversible brain damage and possibly become brain-dead, due to the effects of cerebral hypoxia. On the other hand, death often occurs if sinus rhythm is not restored within 90 seconds of the onset of VF, especially if it has degenerated further into asystole.
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