Electrocardiography (ECG) Handout Introduction
... Similar cases have been described by Amal Mattu on several occasions: "Post-MI reperfusion arrhythmias often take the form of a regular, wide-QRS complex dysrhythmia with a rate of 90-120. The rhythm is often mistaken for VT. Treatment with “standard” VT medications is well-known to induce asystole. ...
... Similar cases have been described by Amal Mattu on several occasions: "Post-MI reperfusion arrhythmias often take the form of a regular, wide-QRS complex dysrhythmia with a rate of 90-120. The rhythm is often mistaken for VT. Treatment with “standard” VT medications is well-known to induce asystole. ...
Congenital Anomalies Involving the Coronary
... of blood from the coronary sinus, the blood being carried into the developing pulmonary venous system. Later, as the involved pulmonary vein became incorporated into the left atrium, the resulting gross picture was that of a venous channel running between the left atrium and the coronary sinus. The ...
... of blood from the coronary sinus, the blood being carried into the developing pulmonary venous system. Later, as the involved pulmonary vein became incorporated into the left atrium, the resulting gross picture was that of a venous channel running between the left atrium and the coronary sinus. The ...
Regional Distribution of the Molecular Forms of Acetylcholinesterase
... membrane-bound globular forms of AChE. For this analysis, tissue samples from six animals were examined. Figure 1 illustrates the activity profiles typically obtained after sedimentation analysis of tissue extracts of the selected heart regions. Gradients from all areas contained three major peaks o ...
... membrane-bound globular forms of AChE. For this analysis, tissue samples from six animals were examined. Figure 1 illustrates the activity profiles typically obtained after sedimentation analysis of tissue extracts of the selected heart regions. Gradients from all areas contained three major peaks o ...
Cardiac Rhythm Management Devices (Part II)
... malfunction because of undersensing.3 For example, reversion to an asynchronous pacing mode during continuous interference is necessary to protect the patient against inappropriate output inhibition. Other examples are triggered pacing modes with fusion or pseudofusion beats. With both, pacing artif ...
... malfunction because of undersensing.3 For example, reversion to an asynchronous pacing mode during continuous interference is necessary to protect the patient against inappropriate output inhibition. Other examples are triggered pacing modes with fusion or pseudofusion beats. With both, pacing artif ...
Water and sodium regulation in chronic heart failure: the role of
... and sodium retentive actions are provided by the renin– angiotensin–aldosterone system, the sympathetic nervous system, vasopressin, thromboxane and endothelin [2–5]. Initially, in patients with heart failure, these act as important compensatory mechanisms maintaining blood pressure and adequate tis ...
... and sodium retentive actions are provided by the renin– angiotensin–aldosterone system, the sympathetic nervous system, vasopressin, thromboxane and endothelin [2–5]. Initially, in patients with heart failure, these act as important compensatory mechanisms maintaining blood pressure and adequate tis ...
The importance of exercise echocardiography for clinical decision
... few studies exist about exercise-induced changes in primary mitral regurgitation. Stoddard et al.18 showed that 32% of patients with mitral valve prolapse without mitral regurgitation developed mitral regurgitation during exercise. More recently and in line with these data, Magne et al.19 found an i ...
... few studies exist about exercise-induced changes in primary mitral regurgitation. Stoddard et al.18 showed that 32% of patients with mitral valve prolapse without mitral regurgitation developed mitral regurgitation during exercise. More recently and in line with these data, Magne et al.19 found an i ...
General Information About Dilated Cardiomyopathy in Doberman
... 1. What is dilated cardiomyopathy (DCM)? Dilated cardiomyopathy is an acquired disease that is characterized by a markedly enlarged and weakened heart muscle. In the Doberman it affects mainly the left ventricle and left atrium. It results in electrical abnormalities (irregular or abnormal or premat ...
... 1. What is dilated cardiomyopathy (DCM)? Dilated cardiomyopathy is an acquired disease that is characterized by a markedly enlarged and weakened heart muscle. In the Doberman it affects mainly the left ventricle and left atrium. It results in electrical abnormalities (irregular or abnormal or premat ...
Role of trans-thoracic impedance and current for a successful
... Abstract The thesis examines the effect of transthoracic impedance (TTI) on the success rate of synchronized cardioversion, using retrospective analysis on clinical data and numerical model. Synchronized electrical cardioversion is a treatment that applies an electrical pulse to the cardiac tissue ...
... Abstract The thesis examines the effect of transthoracic impedance (TTI) on the success rate of synchronized cardioversion, using retrospective analysis on clinical data and numerical model. Synchronized electrical cardioversion is a treatment that applies an electrical pulse to the cardiac tissue ...
Chapter 96 - Extras Springer
... ventricular activity during tachycardia has been considered a hallmark of VT. As pointed out previously, however,4 some form of ventriculoatrial conduction is frequently present during VT. Identification of atrial activity during VT can be difficult or impossible on the 12-lead ECG. Recognition of t ...
... ventricular activity during tachycardia has been considered a hallmark of VT. As pointed out previously, however,4 some form of ventriculoatrial conduction is frequently present during VT. Identification of atrial activity during VT can be difficult or impossible on the 12-lead ECG. Recognition of t ...
150 Practice ECGs: Interpretation and Review
... have you reading ECGs as quickly as possible. The introductory chapters are shorter than those found in the usual beginner’s manual, but there is plenty there to get you started. Where you want additional depth, refer to an encyclopedic text in the library. The practice ECGs include clinical data an ...
... have you reading ECGs as quickly as possible. The introductory chapters are shorter than those found in the usual beginner’s manual, but there is plenty there to get you started. Where you want additional depth, refer to an encyclopedic text in the library. The practice ECGs include clinical data an ...
Chapter 4 Atrial Mechanisms
... similar in shape to those of the underlying rhythm unless the PAC is abnormally conducted ...
... similar in shape to those of the underlying rhythm unless the PAC is abnormally conducted ...
MEANS ECG Physicians` Manual
... The diagnostic logic operates on the parameters and produces both a rhythm classification and a contour or morphology classification. The criteria used by the computer may differ from the criteria used in the ECG textbooks. The basic reason is that a human observer is inaccurate but flexible and cre ...
... The diagnostic logic operates on the parameters and produces both a rhythm classification and a contour or morphology classification. The criteria used by the computer may differ from the criteria used in the ECG textbooks. The basic reason is that a human observer is inaccurate but flexible and cre ...
Atrio-Ventricular Conduction with and without AV Nodal Delay: Two
... occurring 43ms after stimulation) and also spread retrogradely across the IAS. In the SHE trace, the His electrogram morphology changed to a slow-His morphology with a smaller amplitude during SP pacing (compare SHE morphology in panels B and D), and returned to its original morphology after the ram ...
... occurring 43ms after stimulation) and also spread retrogradely across the IAS. In the SHE trace, the His electrogram morphology changed to a slow-His morphology with a smaller amplitude during SP pacing (compare SHE morphology in panels B and D), and returned to its original morphology after the ram ...
Syncope - Brain 101
... Class I indication for pacing using dualchamber system wherever adequate atrial rhythm is available Ventricular pacing in atrial fibrillation with slow ventricular response ...
... Class I indication for pacing using dualchamber system wherever adequate atrial rhythm is available Ventricular pacing in atrial fibrillation with slow ventricular response ...
PDF Article
... ceptor-related mechanisms responsible for suppressing arginine vasopressin secretion in congestive heart failure, both in the basally increased state and after additional osmotic stimulation . Head-down tilt as a stimulus . Head-down tilt is a nonspecific baroreceptor loading maneuver . We have docu ...
... ceptor-related mechanisms responsible for suppressing arginine vasopressin secretion in congestive heart failure, both in the basally increased state and after additional osmotic stimulation . Head-down tilt as a stimulus . Head-down tilt is a nonspecific baroreceptor loading maneuver . We have docu ...
An Analysis of Pacemaker Activity in the Canine Right Atrium
... origin of the mammalian heartbeat was not as well defined. The early attempts addressing this question generally involved the use of crude methods and subjective observations. Nevertheless, these initial observations provided the foundation for subsequent, more systematic investigations. One of the ...
... origin of the mammalian heartbeat was not as well defined. The early attempts addressing this question generally involved the use of crude methods and subjective observations. Nevertheless, these initial observations provided the foundation for subsequent, more systematic investigations. One of the ...
An ECG Primer
... lead views offer a more comprehensive electrical picture of the heart. For tasks such as ischemia monitoring, multiple lead views increase the likelihood that ischemic episodes are detected. For dysrhythmia monitoring, the case for multiple lead views is well established. To combine the old standard ...
... lead views offer a more comprehensive electrical picture of the heart. For tasks such as ischemia monitoring, multiple lead views increase the likelihood that ischemic episodes are detected. For dysrhythmia monitoring, the case for multiple lead views is well established. To combine the old standard ...
ECGprimer
... lead views offer a more comprehensive electrical picture of the heart. For tasks such as ischemia monitoring, multiple lead views increase the likelihood that ischemic episodes are detected. For dysrhythmia monitoring, the case for multiple lead views is well established. To combine the old standard ...
... lead views offer a more comprehensive electrical picture of the heart. For tasks such as ischemia monitoring, multiple lead views increase the likelihood that ischemic episodes are detected. For dysrhythmia monitoring, the case for multiple lead views is well established. To combine the old standard ...
Mapping and Investigation of Atrial Electrogram Fractionation in
... Electrogram Fractionation in Patients with Persistent Atrial Fibrillation Tiago Paggi de Almeida Abstract Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia found in clinical practice, and it is a leading cause of stroke. It has been shown that triggers in the pulmonary veins ( ...
... Electrogram Fractionation in Patients with Persistent Atrial Fibrillation Tiago Paggi de Almeida Abstract Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia found in clinical practice, and it is a leading cause of stroke. It has been shown that triggers in the pulmonary veins ( ...
Print - Circulation Research
... The degree of sympathetic stimulation is an important regulator of AV nodal function. ,B-Adrenergic stimulation, via direct activation of the sympathetic innervation of the heart26-28 or by the exogenous administration of adrenergic agonists,8'29,30 accelerates AV nodal conduction. Changes in sympat ...
... The degree of sympathetic stimulation is an important regulator of AV nodal function. ,B-Adrenergic stimulation, via direct activation of the sympathetic innervation of the heart26-28 or by the exogenous administration of adrenergic agonists,8'29,30 accelerates AV nodal conduction. Changes in sympat ...
images/Long term effects of RV pacing.pps
... The findings of the PAVE study suggest that, in order to avoid the adverse effects of cardiac dyssynchrony generated by RV pacing, a biventricular pacing should be considered for patients who require AV node ablation for management of atrial fibrillation and who have a left ventricular ejection frac ...
... The findings of the PAVE study suggest that, in order to avoid the adverse effects of cardiac dyssynchrony generated by RV pacing, a biventricular pacing should be considered for patients who require AV node ablation for management of atrial fibrillation and who have a left ventricular ejection frac ...
All About Your ICD
... some of the information that the U.S. Food and Drug Administration wants you to know about your device. Throughout the booklet, we have sometimes used medical terms. These terms can be long and confusing, but it is important for you to know the correct medical words for certain procedures and condit ...
... some of the information that the U.S. Food and Drug Administration wants you to know about your device. Throughout the booklet, we have sometimes used medical terms. These terms can be long and confusing, but it is important for you to know the correct medical words for certain procedures and condit ...
Effectiveness of systematic screening for the detection of atrial
... Atrial fibrillation is a common cardiac arrhythmia that makes the heart beat rapidly and irregularly. This can occur for brief episodes or may be continuous. Symptoms of the disease include heart palpitations, chest pain, shortness of breath, light-headedness and fatigue. The condition is rare in th ...
... Atrial fibrillation is a common cardiac arrhythmia that makes the heart beat rapidly and irregularly. This can occur for brief episodes or may be continuous. Symptoms of the disease include heart palpitations, chest pain, shortness of breath, light-headedness and fatigue. The condition is rare in th ...
After reading this chapter you will be able to
... Mosby items and derived items © 2010 by Mosby, Inc., an affiliate of Elsevier Inc. ...
... Mosby items and derived items © 2010 by Mosby, Inc., an affiliate of Elsevier Inc. ...
Atrial fibrillation
Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm characterized by rapid and irregular beating. Often it starts as brief periods of abnormal beating which become longer and possibly constant over time. Most episodes have no symptoms. Occasionally there may be heart palpitations, fainting, shortness of breath, or chest pain. The disease increases the risk of heart failure, dementia, and stroke.Hypertension and valvular heart disease are the most common alterable risk factors for AF. Other heart-related risk factors include heart failure, coronary artery disease, cardiomyopathy, and congenital heart disease. In the developing world valvular heart disease often occurs as a result of rheumatic fever. Lung-related risk factors include COPD, obesity, and sleep apnea. Other factors include excess alcohol intake, diabetes mellitus, and thyrotoxicosis. However, half of cases are not associated with one of these risks. A diagnosis is made by feeling the pulse and may be confirmed using an electrocardiogram (ECG). The typical ECG shows no P waves and an irregular ventricular rate.AF is often treated with medications to slow the heart rate to a near normal range (known as rate control) or to convert the rhythm to normal sinus rhythm (known as rhythm control). Electrical cardioversion can also be used to convert AF to a normal sinus rhythm and is often used emergently if the person is unstable. Ablation may prevent recurrence in some people. Depending on the risk of stroke either aspirin or anti-clotting medications such as warfarin or a novel oral anticoagulant may be recommended. While these medications reduce this risk, they increase rates of major bleeding.Atrial fibrillation is the most common serious abnormal heart rhythm. In Europe and North America, as of 2014, it affects about 2% to 3% of the population. This is an increase from 0.4 to 1% of the population around 2005. In the developing world about 0.6% of males and 0.4% of females are affected. The percentage of people with AF increases with age with 0.14% under 50 years old, 4% between 60 and 70 years old, and 14% over 80 years old being affected. A-fib and atrial flutter resulted in 112,000 deaths in 2013, up from 29,000 in 1990. The first known report of an irregular pulse was by John Baptist Senac in 1749. This was first documented by ECG in 1909 by Thomas Lewis.