Atrial Chamber-specific Expression of Sarcolipin Is Regulated
... expression was most abundant in the atria of the heart, less abundant in esophageal muscle, and least abundant in skeletal muscle and bladder (Fig. 1A). In murine myocardium, the expression of SLN mRNA was restricted to the atria and was not present in the ventricles. In skeletal muscle, the similar ...
... expression was most abundant in the atria of the heart, less abundant in esophageal muscle, and least abundant in skeletal muscle and bladder (Fig. 1A). In murine myocardium, the expression of SLN mRNA was restricted to the atria and was not present in the ventricles. In skeletal muscle, the similar ...
Syncope - OSU CCME account - The Ohio State University
... Due to Tachyarrhythmia • Atrial Tachyarrhythmias; 9 AVRT due to accessory pathway – ablate pathway 9 AVNRT – ablate AV nodal slow pathway 9 Atrial fib{– Pacing, linear / focal ablation, ICD selected pts 9 Atrial flutter – Ablation of reentrant circuit • Ventricular Tachyarrhythmias; 9 Ventricular ta ...
... Due to Tachyarrhythmia • Atrial Tachyarrhythmias; 9 AVRT due to accessory pathway – ablate pathway 9 AVNRT – ablate AV nodal slow pathway 9 Atrial fib{– Pacing, linear / focal ablation, ICD selected pts 9 Atrial flutter – Ablation of reentrant circuit • Ventricular Tachyarrhythmias; 9 Ventricular ta ...
Pathophysiological Mechanisms of Atrial Fibrillation: A Translational
... part by the increasing average age in the human population (85). AF patients usually seek medical attention because of AF-related symptoms. Treatment of these symptoms has been the main motivation for AF therapy in the past. In epidemiological and other observational studies, AF is associated with e ...
... part by the increasing average age in the human population (85). AF patients usually seek medical attention because of AF-related symptoms. Treatment of these symptoms has been the main motivation for AF therapy in the past. In epidemiological and other observational studies, AF is associated with e ...
Simplified Method for Vagal Effect Evaluation in Cardiac Ablation
... arch of the third rib; however, stimulations at lower levels caused significant and undesirable stimulation of the brachial plexus, which can be prevented by using the upper approach near the jugular foramen. In all but 2 patients, the bilateral VS was obtained. It was possible to place the catheter ...
... arch of the third rib; however, stimulations at lower levels caused significant and undesirable stimulation of the brachial plexus, which can be prevented by using the upper approach near the jugular foramen. In all but 2 patients, the bilateral VS was obtained. It was possible to place the catheter ...
The Role of Muscarinic K Channels in the Negative Chronotropic
... heart was quickly removed and immediately reperfused with oxygenated modified Tyrode’s solution (for composition, see below) at 37°C in the Langendorff apparatus in a retrograde manner. Recording Electrocardiogram from Isolated Rabbit Hearts. The isolated heart was hung over a glass funnel ⬃5 cm in ...
... heart was quickly removed and immediately reperfused with oxygenated modified Tyrode’s solution (for composition, see below) at 37°C in the Langendorff apparatus in a retrograde manner. Recording Electrocardiogram from Isolated Rabbit Hearts. The isolated heart was hung over a glass funnel ⬃5 cm in ...
Rate control in Atrial fibrillation Groenveld, Hessel Folkert
... Strokes associated with AF have a worse prognosis.8,9 In addition, AF can cause or deteriorate heart failure, and AF is independently associated with a worse prognosis in retrospective analyses of patients with heart failure.10-16 Patients with AF also have an increased bleeding risk due to the use ...
... Strokes associated with AF have a worse prognosis.8,9 In addition, AF can cause or deteriorate heart failure, and AF is independently associated with a worse prognosis in retrospective analyses of patients with heart failure.10-16 Patients with AF also have an increased bleeding risk due to the use ...
Chapter 05: Junctional Rhythms Test Bank TRUE/FALSE 1. The AV
... works by blocking acetylcholine at the endings of the vagus nerves. The vagus nerves innervate the heart at the SA and AV nodes. Thus, atropine is most effective for narrow-QRS bradycardia. By blocking the effects of acetylcholine, atropine allows more activity from the sympathetic division of the a ...
... works by blocking acetylcholine at the endings of the vagus nerves. The vagus nerves innervate the heart at the SA and AV nodes. Thus, atropine is most effective for narrow-QRS bradycardia. By blocking the effects of acetylcholine, atropine allows more activity from the sympathetic division of the a ...
Chapter 7 Body Systems
... In atrial flutter the normal P wave is absent and replaced by two or more regular sawtooth waves. The QRS complex is normal, and the ventricular rate may be regular or irregular. The atrial rate is usually constant, 250 to 350 bpm, whereas the ventricular rate is in the normal range. ...
... In atrial flutter the normal P wave is absent and replaced by two or more regular sawtooth waves. The QRS complex is normal, and the ventricular rate may be regular or irregular. The atrial rate is usually constant, 250 to 350 bpm, whereas the ventricular rate is in the normal range. ...
Analysis of intrinsic cardiac neuron activity in relation to
... recorded neurons reacted to episodes of atrial fibrillation by becoming more active. This hyperactivity of intrinsic cardiac neurons during atrial fibrillation suggested that controlling that activity might help preventing neurogenic atrial fibrillation. Since low-level vagus nerve stimulation obtun ...
... recorded neurons reacted to episodes of atrial fibrillation by becoming more active. This hyperactivity of intrinsic cardiac neurons during atrial fibrillation suggested that controlling that activity might help preventing neurogenic atrial fibrillation. Since low-level vagus nerve stimulation obtun ...
Each heartbeat arises as an electrical impulse from the SA node It
... • If it is the SA node, the rhythm remains normal but faster than 100 beats per minute • If it is an ectopic focus, any number of dysrhythmias may ensue – May cause a single, occasional early beat or it can produce a sustained abnormal rhythm • Sustained rhythms produced by an ectopic focus in the a ...
... • If it is the SA node, the rhythm remains normal but faster than 100 beats per minute • If it is an ectopic focus, any number of dysrhythmias may ensue – May cause a single, occasional early beat or it can produce a sustained abnormal rhythm • Sustained rhythms produced by an ectopic focus in the a ...
Heart Rate Variability for Clinicians
... Intrinsic Periodic Rhythms Respiratory sinus arrhythmia Baroreceptor reflex regulation ...
... Intrinsic Periodic Rhythms Respiratory sinus arrhythmia Baroreceptor reflex regulation ...
Medical treatment in Poland – analysis and models Cardiology
... in outpatient, emergency department and inpatient settings for the period 2009–2014. It should be underlined that analyses differentiated between the types of provided services, because it was necessary to identify the patients, from the set under examination, who could have been registered in the p ...
... in outpatient, emergency department and inpatient settings for the period 2009–2014. It should be underlined that analyses differentiated between the types of provided services, because it was necessary to identify the patients, from the set under examination, who could have been registered in the p ...
PEDMEANS Physicians Manual
... and creative, a computer precise and obedient but rigid in its operation. There are several specific reasons why ECG criteria in the program may differ from the conventional ones. First there is no uniformity of criteria in the literature. Then, criteria may be based on inaccurate measurement by eye ...
... and creative, a computer precise and obedient but rigid in its operation. There are several specific reasons why ECG criteria in the program may differ from the conventional ones. First there is no uniformity of criteria in the literature. Then, criteria may be based on inaccurate measurement by eye ...
Module 2: Abnormal ECGs
... opinion varies, a discussion section is included. However, it is not within the scope of 12-lead ECG to address the full spectrum of local variations. Variations can occur in several areas, including practices relating to types of equipment used, infection control processes, practice guidelines and ...
... opinion varies, a discussion section is included. However, it is not within the scope of 12-lead ECG to address the full spectrum of local variations. Variations can occur in several areas, including practices relating to types of equipment used, infection control processes, practice guidelines and ...
4 Jugular Venous Pulse
... Next we shall consider the jugular venous flow events as related to the jugular venous pulse contours. Although the jugular venous column is in direct continuity with the right atrium, the venous system is innervated by the sympathetic system, which can influence the tone of the smooth muscles in th ...
... Next we shall consider the jugular venous flow events as related to the jugular venous pulse contours. Although the jugular venous column is in direct continuity with the right atrium, the venous system is innervated by the sympathetic system, which can influence the tone of the smooth muscles in th ...
PACES/HRS Expert Consensus Statement on the Recognition and
... typically encountered in common forms of CHD.27 Atrial tachyarrhythmias may be mediated by accessory pathways, AV node reentry, twin AV nodes,28,29 macroreentrant circuits, automatic foci, or nonautomatic foci.30 Intra-atrial reentry is the most common tachyarrhythmia in adults with CHD,31–33 althou ...
... typically encountered in common forms of CHD.27 Atrial tachyarrhythmias may be mediated by accessory pathways, AV node reentry, twin AV nodes,28,29 macroreentrant circuits, automatic foci, or nonautomatic foci.30 Intra-atrial reentry is the most common tachyarrhythmia in adults with CHD,31–33 althou ...
PACES/HRS Expert Consensus Statement on the Recognition and
... typically encountered in common forms of CHD.27 Atrial tachyarrhythmias may be mediated by accessory pathways, AV node reentry, twin AV nodes,28,29 macroreentrant circuits, automatic foci, or nonautomatic foci.30 Intra-atrial reentry is the most common tachyarrhythmia in adults with CHD,31–33 althou ...
... typically encountered in common forms of CHD.27 Atrial tachyarrhythmias may be mediated by accessory pathways, AV node reentry, twin AV nodes,28,29 macroreentrant circuits, automatic foci, or nonautomatic foci.30 Intra-atrial reentry is the most common tachyarrhythmia in adults with CHD,31–33 althou ...
Heart rhythm analysis using ECG recorded with a novel
... analysis and could be used as input to diagnosis together with other clinical tests and medical history. ...
... analysis and could be used as input to diagnosis together with other clinical tests and medical history. ...
Contemporary Pacemakers - CCM, University of Pittsburgh
... dual-chamber pacing and sensing with inhibition and atrial tracking (DDD) pacing mode. Order of panels in electrograms: Top, Standard lead II electrocardiogram (ECG); Middle, Marker channel; Bottom, Ventricular electrogram (VEGM). A, Electrocardiogram illustrating atrial pacing (AP) with ventricular ...
... dual-chamber pacing and sensing with inhibition and atrial tracking (DDD) pacing mode. Order of panels in electrograms: Top, Standard lead II electrocardiogram (ECG); Middle, Marker channel; Bottom, Ventricular electrogram (VEGM). A, Electrocardiogram illustrating atrial pacing (AP) with ventricular ...
Paper
... from “keeping the patient alive” to “improving the quality of the patient’s life”. The addition of more safety and efficacy features has resulted in increased complexity, inevitably leading to more potential safety issues. From 1996-2006, the percentage of software-related causes in medical device r ...
... from “keeping the patient alive” to “improving the quality of the patient’s life”. The addition of more safety and efficacy features has resulted in increased complexity, inevitably leading to more potential safety issues. From 1996-2006, the percentage of software-related causes in medical device r ...
The effect of connexin40 deficiency on ventricular conduction
... those of the cardiovascular system. Some of these involve the normal function of the cardiac conduction system. Despite its morphology being well characterized down to the molecular level, a comprehensive quantitative study of conduction system function is not available. Extensive studies in the chi ...
... those of the cardiovascular system. Some of these involve the normal function of the cardiac conduction system. Despite its morphology being well characterized down to the molecular level, a comprehensive quantitative study of conduction system function is not available. Extensive studies in the chi ...
Relative expression of immunolocalized connexins 40 and
... family of proteins, which have a high degree of molecular homology but form gap-junctional channels with different functional properties (3– 6). In the human atrium, the predominant connexins are connexin43 (Cx43) and connexin40 (Cx40) (7). Connexin45 has also been shown to be present at low levels ...
... family of proteins, which have a high degree of molecular homology but form gap-junctional channels with different functional properties (3– 6). In the human atrium, the predominant connexins are connexin43 (Cx43) and connexin40 (Cx40) (7). Connexin45 has also been shown to be present at low levels ...
CardioNet, Inc. v. MedNet Healthcare
... processing system is capable of pictographically presenting, using a common time scale, information regarding the heart rate data during a defined time period and regarding duration of arrhythmia event activity, according to the identified arrhythmia events, during the defined time period such that ...
... processing system is capable of pictographically presenting, using a common time scale, information regarding the heart rate data during a defined time period and regarding duration of arrhythmia event activity, according to the identified arrhythmia events, during the defined time period such that ...
... for the management and treatment of patients with supraventricular arrhythmias (SVA). These include rhythms emanating from the sinus node, from atrial tissue (atrial flutter), and from junctional as well as reciprocating or accessory pathway-mediated tachycardia. This document does not include recom ...
ACC/AHA/ESC Guidelines for the Management of Patients
... for the management and treatment of patients with supraventricular arrhythmias (SVA). These include rhythms emanating from the sinus node, from atrial tissue (atrial flutter), and from junctional as well as reciprocating or accessory pathway-mediated tachycardia. This document does not include recom ...
... for the management and treatment of patients with supraventricular arrhythmias (SVA). These include rhythms emanating from the sinus node, from atrial tissue (atrial flutter), and from junctional as well as reciprocating or accessory pathway-mediated tachycardia. This document does not include recom ...
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.