Simplified Method for Vagal Effect Evaluation in Cardiac Ablation
... denervation at any time during the ablation procedure without autonomic residual effect. BACKGROUND Parasympathetic denervation has been increasingly applied in ablation procedures such as in vagalrelated atrial fibrillation and cardioneuroablation. This method proposes an easy way to study the vagal ...
... denervation at any time during the ablation procedure without autonomic residual effect. BACKGROUND Parasympathetic denervation has been increasingly applied in ablation procedures such as in vagalrelated atrial fibrillation and cardioneuroablation. This method proposes an easy way to study the vagal ...
Screening for undiagnosed atrial fibrillation in the community
... Illustration of the yield for AF detection with a single-lead ECG tracing performed twice per day or when symptoms were experienced, in 403 ambulatory patients with at least two CHADS2 risk factors but no prior history of AF. The vertical axis represents the number of patients still to be detected, ...
... Illustration of the yield for AF detection with a single-lead ECG tracing performed twice per day or when symptoms were experienced, in 403 ambulatory patients with at least two CHADS2 risk factors but no prior history of AF. The vertical axis represents the number of patients still to be detected, ...
Paroxysmal Supraventricular Tachycardia with QRS Duration
... Mechanical (pulsus) alternans and electrical alternans are both associated with myocardial ischemia and are not an uncommon phenomenon during PSVT. 6-8 However, QRS duration alternans is a rare condition during PSVT, and is frequently associated with a cycle length alternans. 9,10 Interestingly, the ...
... Mechanical (pulsus) alternans and electrical alternans are both associated with myocardial ischemia and are not an uncommon phenomenon during PSVT. 6-8 However, QRS duration alternans is a rare condition during PSVT, and is frequently associated with a cycle length alternans. 9,10 Interestingly, the ...
Techniques for Ventricular Repolarization Instability Assessment
... from the surface ECG can be considered as an approximation to the study of such phenomenon, and it will be explored in Section III-C2. Section III-D1 will examine T-wave alternans (TWAs), which have been shown to be proarrhythmic in different investigations [23]. TWA is considered a manifestation of ...
... from the surface ECG can be considered as an approximation to the study of such phenomenon, and it will be explored in Section III-C2. Section III-D1 will examine T-wave alternans (TWAs), which have been shown to be proarrhythmic in different investigations [23]. TWA is considered a manifestation of ...
Slow Conduction in Cardiac Tissue, II
... under control conditions (HBSS, control [K1]o55.8 mmol/L). Subsequently, the preparation was superfused for at least 5 min with HBSS containing elevated [K1]o (14.8 mmol/L), and a second recording was performed at the same sites. At the end of each experiment, absence of significant phototoxic effec ...
... under control conditions (HBSS, control [K1]o55.8 mmol/L). Subsequently, the preparation was superfused for at least 5 min with HBSS containing elevated [K1]o (14.8 mmol/L), and a second recording was performed at the same sites. At the end of each experiment, absence of significant phototoxic effec ...
Community AED Toolkit Public Access to Defibrillation
... the upper chambers or atria contract. As they do, the blood inside them is squeezed out into the lower chambers of the heart – the ventricles. Meanwhile the electrical signal that made the atria contract has reached the AV (atrioventricular) node, in the lower part of the right atrium. The AV node i ...
... the upper chambers or atria contract. As they do, the blood inside them is squeezed out into the lower chambers of the heart – the ventricles. Meanwhile the electrical signal that made the atria contract has reached the AV (atrioventricular) node, in the lower part of the right atrium. The AV node i ...
Results and conclusions: The perceived exertion differed
... Emphasis is going to be put on complex systems such as people or a person’s heart. Complex systems such as people and hearts have multiple emergent levels. It is worth noting that each level generates phenomena that are more than the sum of the parts and is not reducible to the parts [62]. Overall i ...
... Emphasis is going to be put on complex systems such as people or a person’s heart. Complex systems such as people and hearts have multiple emergent levels. It is worth noting that each level generates phenomena that are more than the sum of the parts and is not reducible to the parts [62]. Overall i ...
Effects of Drugs on Isolated Mammalian Heart
... following subjects: The histological structure of the major tissues of the body, such as epithelia, endothelia and smooth muscle The composition of blood and the cell types it contains, and the principles of ...
... following subjects: The histological structure of the major tissues of the body, such as epithelia, endothelia and smooth muscle The composition of blood and the cell types it contains, and the principles of ...
View
... Syncope is defined as a transient loss of consciousness with loss of postural tone, due to global cerebral ischaemia, usually associated with spontaneous, rapid and complete recovery. It is a relatively common symptom and has been estimated as being the primary complaint in 1.7% of presentations to ...
... Syncope is defined as a transient loss of consciousness with loss of postural tone, due to global cerebral ischaemia, usually associated with spontaneous, rapid and complete recovery. It is a relatively common symptom and has been estimated as being the primary complaint in 1.7% of presentations to ...
False Arrhythmia Alarm Suppression Using ECG, ABP, and
... issued by bedside monitors are false, with some categories of alarm being as high as 90% [1]. These false arrhythmia alarms are often triggered by noise and other artifacts in the monitored ECG waveform, and can be suppressed in the presence of other data which indicate that there are no critical ab ...
... issued by bedside monitors are false, with some categories of alarm being as high as 90% [1]. These false arrhythmia alarms are often triggered by noise and other artifacts in the monitored ECG waveform, and can be suppressed in the presence of other data which indicate that there are no critical ab ...
Task Force Report Guidelines for the diagnosis and treatment of chronic
... Task Force Report of systemic veins[36,37]. Clinical signs of heart failure should be assessed in a careful clinical examination including observing, palpating and auscultating the patient. Unfortunately, clinical examination is often replaced by laboratory investigations which reduce the experienc ...
... Task Force Report of systemic veins[36,37]. Clinical signs of heart failure should be assessed in a careful clinical examination including observing, palpating and auscultating the patient. Unfortunately, clinical examination is often replaced by laboratory investigations which reduce the experienc ...
150 Practice ECGs: Interpretation and Review
... the number of large squares to the next R wave. It is a crude but fast way to measure rate, but it does not work when the rhythm is grossly irregular. In most cases, it allows you to determine quickly whether the patient has a normal rate, bradycardia (less than 60 beats/min), or tachycardia (more t ...
... the number of large squares to the next R wave. It is a crude but fast way to measure rate, but it does not work when the rhythm is grossly irregular. In most cases, it allows you to determine quickly whether the patient has a normal rate, bradycardia (less than 60 beats/min), or tachycardia (more t ...
Vilniaus Universitetas
... Conduction system of the human heart is a specialized myogenic tissue that generates and transmits bioelectrical impulse. This impulse produces synchronical excitation and contraction of the distinct part of the myocardium. Components of the conduction system are found in all parts of the human hear ...
... Conduction system of the human heart is a specialized myogenic tissue that generates and transmits bioelectrical impulse. This impulse produces synchronical excitation and contraction of the distinct part of the myocardium. Components of the conduction system are found in all parts of the human hear ...
Heart Children - Heart Kids NZ
... fist. It weighs less than a pound and lies in the centre of the chest slightly to the left side between the lungs. It is made of muscle enclosed in a protective membrane called the pericardium. The heart has four chambers. Two collecting chambers (the right and left atria) and two pumping chambers ( ...
... fist. It weighs less than a pound and lies in the centre of the chest slightly to the left side between the lungs. It is made of muscle enclosed in a protective membrane called the pericardium. The heart has four chambers. Two collecting chambers (the right and left atria) and two pumping chambers ( ...
Principles of Multi-slice Cardiac CT Imaging
... In all modern multi-slice CT scanners, the halfscan reconstruction technique is the method of choice for image reconstruction in cardiac applications. In clinical applications, the heart should be sufficiently centered within the scan field of view in order to maintain a consistent and stable tempor ...
... In all modern multi-slice CT scanners, the halfscan reconstruction technique is the method of choice for image reconstruction in cardiac applications. In clinical applications, the heart should be sufficiently centered within the scan field of view in order to maintain a consistent and stable tempor ...
Endocardial mapping of atrial fibrillation in the human right atrium
... Our definitions differed from that of Konings et al. in that data were acquired from the entire right atrium and we stipulated that a set number of wave fronts should be present for >50% of the time period analysed, rather than for the entire period. Thus, in this study, larger areas of the right atr ...
... Our definitions differed from that of Konings et al. in that data were acquired from the entire right atrium and we stipulated that a set number of wave fronts should be present for >50% of the time period analysed, rather than for the entire period. Thus, in this study, larger areas of the right atr ...
MEANS ECG Physicians` Manual
... This part deals with the analysis of the various waveforms. First of all, the QRS complexes must be detected. No other waves or artifacts should be labeled as such. The intervals between QRS complexes are measured and stored. After all QRS complexes have been detected, they are typified, i.e., a com ...
... This part deals with the analysis of the various waveforms. First of all, the QRS complexes must be detected. No other waves or artifacts should be labeled as such. The intervals between QRS complexes are measured and stored. After all QRS complexes have been detected, they are typified, i.e., a com ...
Mechanical Interactions between Four Heart Chambers with and
... atrium and the ventricle, (2) the right ventricle and left ventricles, (3) the atrium and one ventricle vs. the other ventricle, and finally (4) the left and right atrium and the right ventricle vs. the left ventricle. For these purposes, we inserted compliant balloons into the four heart chambers w ...
... atrium and the ventricle, (2) the right ventricle and left ventricles, (3) the atrium and one ventricle vs. the other ventricle, and finally (4) the left and right atrium and the right ventricle vs. the left ventricle. For these purposes, we inserted compliant balloons into the four heart chambers w ...
Syncope
... Syncope when diagnosis cannot be made noninvasively; syncope with structural heart disease ...
... Syncope when diagnosis cannot be made noninvasively; syncope with structural heart disease ...
Relative expression of immunolocalized connexins 40 and
... gap-junctional proteins and human atrial conduction. BACKGROUND As a determinant of intercellular conductance, gap-junctional coupling is considered to influence myocardial conduction velocity. This study tested the hypothesis that the quantity of immunodetectable atrial gap-junctional proteins, con ...
... gap-junctional proteins and human atrial conduction. BACKGROUND As a determinant of intercellular conductance, gap-junctional coupling is considered to influence myocardial conduction velocity. This study tested the hypothesis that the quantity of immunodetectable atrial gap-junctional proteins, con ...
Distention of the Immature Left ... Fibroelastosis: An Animal Model of ...
... myocarditis [3], lysosomal storage diseases [4], idiopathic or genetic dilated cardiomyopathies ...
... myocarditis [3], lysosomal storage diseases [4], idiopathic or genetic dilated cardiomyopathies ...
Cardiac Pumping and the Function of Ventricular
... There is a considerable number of monographs in the history of heart physiology and cardiology [165] , as well as chapters in books on the general history of medicine devoted to these topics. But they do not cover development up to the present day. It is thus meaningful to provid ...
... There is a considerable number of monographs in the history of heart physiology and cardiology [165] , as well as chapters in books on the general history of medicine devoted to these topics. But they do not cover development up to the present day. It is thus meaningful to provid ...
Aberrant Intracellular Calcium Cycling in the Heart
... Heart disease is the biggest killer world-wide, causing a quarter of all deaths. During the past two decades, it has also risen above infectious diseases as the leading cause of years of life lost. Heart failure, characterized by weak pump function of the heart, and disturbances in heart rhythm (arr ...
... Heart disease is the biggest killer world-wide, causing a quarter of all deaths. During the past two decades, it has also risen above infectious diseases as the leading cause of years of life lost. Heart failure, characterized by weak pump function of the heart, and disturbances in heart rhythm (arr ...
Academic paper: Left atrial appendage closure: An emerging option
... complication rates remain significant, apixaban having lower rates of major bleeding than dabigatran and rivaroxaban. In a meta-analysis, Ruff et al21 concluded that the target-specific oral anticoagulants provide a favorable balance of risk and benefit. Compared with warfarin, these new drugs reduc ...
... complication rates remain significant, apixaban having lower rates of major bleeding than dabigatran and rivaroxaban. In a meta-analysis, Ruff et al21 concluded that the target-specific oral anticoagulants provide a favorable balance of risk and benefit. Compared with warfarin, these new drugs reduc ...
Venous Thromboembolism Increases the Risk of Atrial Fibrillation
... adjusted for potential confounders including sex, BMI, smoking status, diastolic blood pressure, cholesterol levels, selfreported CVD, and diabetes. In addition, subgroup analyses of PE and DVT as exposure variables for atrial fibrillation were performed. Since the incidence of both VTE and atrial fib ...
... adjusted for potential confounders including sex, BMI, smoking status, diastolic blood pressure, cholesterol levels, selfreported CVD, and diabetes. In addition, subgroup analyses of PE and DVT as exposure variables for atrial fibrillation were performed. Since the incidence of both VTE and atrial fib ...