08_Cardiac arrhythmyas
... rhythm and conductivity of heart • I. Violations of formation of impulse • Sinus tachycardia (more than 90 complexes are for a minute) • Sinus bradycardia (less than 60 complexes are for a minute ) • Sinus arrhythmia • Stop (refuse) of sinus node • Migration of supraventricular driver of rhythm ...
... rhythm and conductivity of heart • I. Violations of formation of impulse • Sinus tachycardia (more than 90 complexes are for a minute) • Sinus bradycardia (less than 60 complexes are for a minute ) • Sinus arrhythmia • Stop (refuse) of sinus node • Migration of supraventricular driver of rhythm ...
ECG - Wsimg.com
... ST-segment monitoring software has been developed to analyze all 12 leads and to sound an alarm for ST-segment changes. Therefore, if lead II is being displayed but the patient has a transient ischemic event involving lead V5, an ST alarm would be triggered. ...
... ST-segment monitoring software has been developed to analyze all 12 leads and to sound an alarm for ST-segment changes. Therefore, if lead II is being displayed but the patient has a transient ischemic event involving lead V5, an ST alarm would be triggered. ...
Idiopathic Enlargement of the Right Atrium
... From the uniformity of clinical and laboratory findings cited above, it is believed that the diagnosis of idiopathic right atrial enlargement can be made on clinical grounds alone. Further, it is concluded that this disease represents a specific clinical entity. The cause of such an abnormality, how ...
... From the uniformity of clinical and laboratory findings cited above, it is believed that the diagnosis of idiopathic right atrial enlargement can be made on clinical grounds alone. Further, it is concluded that this disease represents a specific clinical entity. The cause of such an abnormality, how ...
Surgery for Atrial Fibrillation: Selecting the Procedure for the
... However, in 2002, Saltman had already developed a method for performing epicardial ablation of AF endoscopically in the beating heart, without cardiopulmonary bypass or median sternotomy.27 This method used microwave energy and became known as the microwave minimaze (or micromaze) procedure. Not lon ...
... However, in 2002, Saltman had already developed a method for performing epicardial ablation of AF endoscopically in the beating heart, without cardiopulmonary bypass or median sternotomy.27 This method used microwave energy and became known as the microwave minimaze (or micromaze) procedure. Not lon ...
Palpitations - Australian Doctor
... — signs of valvular heart disease (murmurs). — signs of heart failure ...
... — signs of valvular heart disease (murmurs). — signs of heart failure ...
Diagnosis and ablation of atypical atrial tachycardia and flutter
... successfully ablated with a single application of radiofrequency energy. In a series of 116 macroreentrant atrial tachycardias that started several days to weeks after circumferential pulmonary vein ablation for paroxysmal or persistent atrial fibrillation, the most common type was a perimitral tach ...
... successfully ablated with a single application of radiofrequency energy. In a series of 116 macroreentrant atrial tachycardias that started several days to weeks after circumferential pulmonary vein ablation for paroxysmal or persistent atrial fibrillation, the most common type was a perimitral tach ...
Atrial Fibrillation and Heart Failure: A Review of the
... atrial flutter, and in this patient population the incidence of tachycardia-induced myopathy appears to be around 25-50%.26-29 The first experimental model for this condition was presented by Whipple et al,30 who demonstrated that chronic rapid atrial pacing led to lowoutput heart failure. The mecha ...
... atrial flutter, and in this patient population the incidence of tachycardia-induced myopathy appears to be around 25-50%.26-29 The first experimental model for this condition was presented by Whipple et al,30 who demonstrated that chronic rapid atrial pacing led to lowoutput heart failure. The mecha ...
The Long Journey to Interatrial Block Discovery
... pattern may appear suddenly and may be transient, b) the pattern may exist without associated enlargement of involved chambers. In fact, the term “left atrial abnormality” was coined and widely used to encompass both “atrial enlargement” and “interatrial block” [9, 10] and c) the ECG pattern may be ...
... pattern may appear suddenly and may be transient, b) the pattern may exist without associated enlargement of involved chambers. In fact, the term “left atrial abnormality” was coined and widely used to encompass both “atrial enlargement” and “interatrial block” [9, 10] and c) the ECG pattern may be ...
Prognostic Impact of New-Onset Atrial Fibrillation in - J
... Background: The prognostic impact of new-onset atrial fibrillation (AF) is not fully elucidated. Methods and Results: We examined 4,818 consecutive stage C/D chronic heart failure (CHF) patients in the Chronic Heart Failure Analysis and Registry in the Tohoku District-2 (CHART-2) Study (n=10,219). ...
... Background: The prognostic impact of new-onset atrial fibrillation (AF) is not fully elucidated. Methods and Results: We examined 4,818 consecutive stage C/D chronic heart failure (CHF) patients in the Chronic Heart Failure Analysis and Registry in the Tohoku District-2 (CHART-2) Study (n=10,219). ...
Clinical Trials in Cardiac Rhythm Management
... 3 Kristensen L, Nielsen JC, Pedersen AK, Mortensen PT, Andersen HR. AV block and changes in pacing mode during long-term follow-up of 399 consecutive patients with sick sinus syndrome treated with an AAI/AAIR pacemaker.PACE 2001;24(3):358-365. 4 Andersen HR, Nielsen JC, Thomsen PE, et al. Long-term ...
... 3 Kristensen L, Nielsen JC, Pedersen AK, Mortensen PT, Andersen HR. AV block and changes in pacing mode during long-term follow-up of 399 consecutive patients with sick sinus syndrome treated with an AAI/AAIR pacemaker.PACE 2001;24(3):358-365. 4 Andersen HR, Nielsen JC, Thomsen PE, et al. Long-term ...
Catheter Ablation for Atrial Fibrillation
... center. Patients followed outside of France were excluded (n ⫽ 64), as were those with prior ablation (n ⫽ 256), ⬍1 h of AF per week on average (n ⫽ 98), and a history of AF ⬍6 months (n ⫽ 34). The study cohort consists of the remaining 100 patients, 86% men, age 55.7 ⫾ 9.6 years. Baseline character ...
... center. Patients followed outside of France were excluded (n ⫽ 64), as were those with prior ablation (n ⫽ 256), ⬍1 h of AF per week on average (n ⫽ 98), and a history of AF ⬍6 months (n ⫽ 34). The study cohort consists of the remaining 100 patients, 86% men, age 55.7 ⫾ 9.6 years. Baseline character ...
The right ventricle in patients with chronic heart failure and atrial
... patients with chronic RV failure, not only of ischemic etiology [2, 42–44]. In pulmonary hypertension the RV is exposed to pressure overload. Hemodynamic and clinical stabilization depends mainly on its function. In patients with chronic pulmonary hypertension persistent AF is associated with signif ...
... patients with chronic RV failure, not only of ischemic etiology [2, 42–44]. In pulmonary hypertension the RV is exposed to pressure overload. Hemodynamic and clinical stabilization depends mainly on its function. In patients with chronic pulmonary hypertension persistent AF is associated with signif ...
Electrocardiography in horses – part 2
... occur occasionally, but the performance is affected only when they cause an excessive heart rate during exercise or predispose to paroxysmal atrial fibrillation (Young and van Loon, 2008). When, in the absence of systemic disease, APCs occur frequently, e.g. 1 to 5 per minute, it is more likely that ...
... occur occasionally, but the performance is affected only when they cause an excessive heart rate during exercise or predispose to paroxysmal atrial fibrillation (Young and van Loon, 2008). When, in the absence of systemic disease, APCs occur frequently, e.g. 1 to 5 per minute, it is more likely that ...
Clinical Trial Protocol and Ethics Application
... ventricular pacing if AV conduction fails), (ii) APP (three atrial preferential pacing algorithms to prevent atrial tachyarrhythmias, and (iii) terminating atrial tachyarrhythmias by overdrive atrial pacing delivered at arrhythmia ...
... ventricular pacing if AV conduction fails), (ii) APP (three atrial preferential pacing algorithms to prevent atrial tachyarrhythmias, and (iii) terminating atrial tachyarrhythmias by overdrive atrial pacing delivered at arrhythmia ...
Optimal ventricular rate slowing during atrial fibrillation - AJP
... rapid right atrial pacing. After the hemodynamics stabilized for at least 15 min, data were recorded during AF for at least 500 cardiac cycles. Third, while maintaining the AF, we initiated the feedback program to deliver the AVN-VS and to slow the VR. Four target levels were preprogrammed that were ...
... rapid right atrial pacing. After the hemodynamics stabilized for at least 15 min, data were recorded during AF for at least 500 cardiac cycles. Third, while maintaining the AF, we initiated the feedback program to deliver the AVN-VS and to slow the VR. Four target levels were preprogrammed that were ...
Electrocardiography Heart Anatomy
... Balance of chemicals creates membrane potential Disruption of chemical balance leads to stimulation Ionotropic effect – speed up ...
... Balance of chemicals creates membrane potential Disruption of chemical balance leads to stimulation Ionotropic effect – speed up ...
FETAL ARRYTHMIAS FETAL CARDIOLOGY ABSTRACT
... tachycardia. The reentry circuit in this type of supraventricular tachycardia conducts antegradely through atrioventricular node and retrogradely through an accessory pathway. The rate of this tachycardia is usually 220 to 240 beats per minute with little beat-to-beat variability (figures1,3).There ...
... tachycardia. The reentry circuit in this type of supraventricular tachycardia conducts antegradely through atrioventricular node and retrogradely through an accessory pathway. The rate of this tachycardia is usually 220 to 240 beats per minute with little beat-to-beat variability (figures1,3).There ...
Single and Dual Chamber Pacemaker Timing Module 6 1
... directly over the device. Additionally, for CRT ICDs and CRT IPGs, certain programming and device operations may not provide cardiac resynchronization. Also for CRT IPGs, Elective Replacement Indicator (ERI) results in the device switching to VVI pacing at 65 ppm. In this mode, patients may experien ...
... directly over the device. Additionally, for CRT ICDs and CRT IPGs, certain programming and device operations may not provide cardiac resynchronization. Also for CRT IPGs, Elective Replacement Indicator (ERI) results in the device switching to VVI pacing at 65 ppm. In this mode, patients may experien ...
The Heart Myotonic Dystrophy - Myotonic Dystrophy Support Group
... travelling through the ventricles or “increased QRS interval” occurs in 25% of patients. The true incidence of more severe heart rhythm problems is uncertain. ...
... travelling through the ventricles or “increased QRS interval” occurs in 25% of patients. The true incidence of more severe heart rhythm problems is uncertain. ...
Catheter ablation of typiCal atrial flutter
... the presence of lone AFL (rare) or in those patients that, despite AF documentation, are exclusively symptomatic for AFL. Typical AFL ablation is a fast, safe and effective procedure to eliminate the substrate for this arrhythmia. The presence of co-existing AF and its relationship to the patients’ ...
... the presence of lone AFL (rare) or in those patients that, despite AF documentation, are exclusively symptomatic for AFL. Typical AFL ablation is a fast, safe and effective procedure to eliminate the substrate for this arrhythmia. The presence of co-existing AF and its relationship to the patients’ ...
insight review articles
... pulses per minute in the absence of drug therapy. In normal individuals, a brief period of AF may cause palpitations, chest discomfort and light-headedness. Sustained AF with an uncontrolled ventricular response rate can, by itself, cause severe CHF after several weeks to months, but this is reversi ...
... pulses per minute in the absence of drug therapy. In normal individuals, a brief period of AF may cause palpitations, chest discomfort and light-headedness. Sustained AF with an uncontrolled ventricular response rate can, by itself, cause severe CHF after several weeks to months, but this is reversi ...
Cardio6Activity5A.pdf
... In this activity, you will learn about something called an electrocardiogram or EKG (sometimes called ECG). An electrocardiogram records the electrical activity of the heart. Doctors use EKGs to detect and diagnose heart problems. In the last activity, you learned about the structure of the heart. Y ...
... In this activity, you will learn about something called an electrocardiogram or EKG (sometimes called ECG). An electrocardiogram records the electrical activity of the heart. Doctors use EKGs to detect and diagnose heart problems. In the last activity, you learned about the structure of the heart. Y ...
AMERICAN HEART ASSOCIATION Moderator: Anastasia Pargulski
... And we know that the nonvitamin K antagonist relative to warfarin from data and a large (met) analysis also suggest that the (know act) agents provide superior safety and efficacy relative to warfarin when we look at all of the aggregate evidence or perhaps the most important part of that beneficial ...
... And we know that the nonvitamin K antagonist relative to warfarin from data and a large (met) analysis also suggest that the (know act) agents provide superior safety and efficacy relative to warfarin when we look at all of the aggregate evidence or perhaps the most important part of that beneficial ...
Canine electrocardiography
... While the ECG can be a useful screening tool for serious heart disease, it is important to remember that it does not detect all heart problems. Although the ECG is very good at detecting disturbances in heart rhythm, it is relatively insensitive at detecting how well the heart is pumping and more sp ...
... While the ECG can be a useful screening tool for serious heart disease, it is important to remember that it does not detect all heart problems. Although the ECG is very good at detecting disturbances in heart rhythm, it is relatively insensitive at detecting how well the heart is pumping and more sp ...
Review Article Frequency Analysis Of Atrial Fibrillation
... exhibits large inter-individual variability. The reason is, that the same frequency difference results in larger cycle length differences for low frequencies compared to high frequencies. Method Validation and Reproducibility A direct comparison between endocardially recorded electrograms and body s ...
... exhibits large inter-individual variability. The reason is, that the same frequency difference results in larger cycle length differences for low frequencies compared to high frequencies. Method Validation and Reproducibility A direct comparison between endocardially recorded electrograms and body s ...
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.