patient teaching aid
... wires also may need to be replaced. Avoid Exposure to Certain Equipment A person with an artificial cardiac pacemaker should avoid close exposure to equipment that can affect its performance. A patient receiving a pacemaker should be given a list of devices to avoid, such as MRI machines, radiation ...
... wires also may need to be replaced. Avoid Exposure to Certain Equipment A person with an artificial cardiac pacemaker should avoid close exposure to equipment that can affect its performance. A patient receiving a pacemaker should be given a list of devices to avoid, such as MRI machines, radiation ...
Radiofrequency Ablation for Atrial Fibrillation
... stops the electrical signals that come from places other than the SA node. In RFA, thin wires are threaded into the heart through a vein in the arm or leg. One wire is used to find the problem areas in the heart’s electrical system. Then heat is sent through another wire. The heat destroys a small a ...
... stops the electrical signals that come from places other than the SA node. In RFA, thin wires are threaded into the heart through a vein in the arm or leg. One wire is used to find the problem areas in the heart’s electrical system. Then heat is sent through another wire. The heat destroys a small a ...
Echo-Doppler–derived indexes of ventricular stiffness and ventriculo
... (238 men; age 62 ± 15 years) with stable HF with normal sinus rhythm who had undergone echocardiography between January 2007 and December 2008 in our institution. Reduced left ventricular (LV) contractility was defined as either a reduced ejection fraction (EF) (EF < 40 %) or a borderline EF (40 % ≤ ...
... (238 men; age 62 ± 15 years) with stable HF with normal sinus rhythm who had undergone echocardiography between January 2007 and December 2008 in our institution. Reduced left ventricular (LV) contractility was defined as either a reduced ejection fraction (EF) (EF < 40 %) or a borderline EF (40 % ≤ ...
Full Text:PDF - The Turkish Journal of Pediatrics
... accessory pathway, amiodarone was prescribed to prevent further tachyarrhythmia attacks. WPW syndrome was revealed in another three infants (patient nos. 10, 15, 18) with atrial flutter and structurally normal heart. Two of them (nos. 10 and 15) had two types of paroxysms (orthodromic and atrial flu ...
... accessory pathway, amiodarone was prescribed to prevent further tachyarrhythmia attacks. WPW syndrome was revealed in another three infants (patient nos. 10, 15, 18) with atrial flutter and structurally normal heart. Two of them (nos. 10 and 15) had two types of paroxysms (orthodromic and atrial flu ...
Right Atrial Anatomical Remodeling Affects Early Outcomes of
... The study protocol was approved by the Institutional Review Board of Severance Cardiovascular Hospital, in Seoul, Korea and it complied with the Declaration of Helsinki. All patients provided written informed consent. A total of 63 patients (50 men, 57±10 years) who underwent RFA of nonvalvular AF w ...
... The study protocol was approved by the Institutional Review Board of Severance Cardiovascular Hospital, in Seoul, Korea and it complied with the Declaration of Helsinki. All patients provided written informed consent. A total of 63 patients (50 men, 57±10 years) who underwent RFA of nonvalvular AF w ...
Simplified 2D Bidomain Model of Whole Heart Electrical Activity and
... The aim of this study was the development of a geometrically simple and highly computationally-efficient two dimensional (2D) biophysical model of whole heart electrical activity, incorporating spontaneous activation of the sinoatrial node (SAN), the specialized conduction system, and realistic surf ...
... The aim of this study was the development of a geometrically simple and highly computationally-efficient two dimensional (2D) biophysical model of whole heart electrical activity, incorporating spontaneous activation of the sinoatrial node (SAN), the specialized conduction system, and realistic surf ...
ECG Interpretation for the Veterinary Technician
... Conduction begins with generation of an impulse at the sinoatrial node within the right atrium. The sinoatrial node (SA), the primary pacemaker of the heart, generates impulses from 160-240 bpm in the cat and 70 – 180 bpm in the dog (dependent on size and breed). The impulse spreads rapidly through ...
... Conduction begins with generation of an impulse at the sinoatrial node within the right atrium. The sinoatrial node (SA), the primary pacemaker of the heart, generates impulses from 160-240 bpm in the cat and 70 – 180 bpm in the dog (dependent on size and breed). The impulse spreads rapidly through ...
Left Atrial Enlargement
... carefully obtained from the aortic root at end diastole and left atrium at end systole, as shown in figure 1. Adjustments in gain were sometimes necessary to clarify left atrial wall motion or the farthest posterior echo was defined as left atrial wall. An average of five cardiac cycles was utilized ...
... carefully obtained from the aortic root at end diastole and left atrium at end systole, as shown in figure 1. Adjustments in gain were sometimes necessary to clarify left atrial wall motion or the farthest posterior echo was defined as left atrial wall. An average of five cardiac cycles was utilized ...
Epicardial Approach: Technique to Prevent Complications
... represent more than 2400 patients and nearly 6000 patient-years of follow-up. Results from the randomised clinical trials of PROTECT AF 3 and PREVAIL 4 have been previously reported, however to evaluate the benefit-risk profile for the totality of data, the PROTECT AF and PREVAIL datasets were combi ...
... represent more than 2400 patients and nearly 6000 patient-years of follow-up. Results from the randomised clinical trials of PROTECT AF 3 and PREVAIL 4 have been previously reported, however to evaluate the benefit-risk profile for the totality of data, the PROTECT AF and PREVAIL datasets were combi ...
Heart Valves
... • As long as the action potential is in its plateau and calcium is entering the myocytes, the myocytes contract. • These plateaus are more pronounced in the ventricles. • Cardiac muscle has an absolute refractory period of 250 msec, compared with 1–2 msec in skeletal muscle. • The cardiac muscle mus ...
... • As long as the action potential is in its plateau and calcium is entering the myocytes, the myocytes contract. • These plateaus are more pronounced in the ventricles. • Cardiac muscle has an absolute refractory period of 250 msec, compared with 1–2 msec in skeletal muscle. • The cardiac muscle mus ...
left atrial and pulmonary capillary venous pressures in - Heart
... From previous catheter studies in mitral stenosis carried out in this department, it has long been maintained that a proper P.C.V.P. tracing should be venous in form (Wood, 1952), and the evidence now presented shows clearly that these waves are derived from the left atrium (Fig. 4). In the presence ...
... From previous catheter studies in mitral stenosis carried out in this department, it has long been maintained that a proper P.C.V.P. tracing should be venous in form (Wood, 1952), and the evidence now presented shows clearly that these waves are derived from the left atrium (Fig. 4). In the presence ...
Chapter 18 PowerPoint B
... (c) Second-degree heart block. (d) Ventricular fibrillation. These chaotic, grossly irregular ECG Some P waves are not conducted deflections are seen in acute through the AV node; hence more heart attack and electrical shock. P than QRS waves are seen. In this tracing, the ratio of P waves to QRS wa ...
... (c) Second-degree heart block. (d) Ventricular fibrillation. These chaotic, grossly irregular ECG Some P waves are not conducted deflections are seen in acute through the AV node; hence more heart attack and electrical shock. P than QRS waves are seen. In this tracing, the ratio of P waves to QRS wa ...
View PDF - CiteSeerX
... and thus its depolarisation dominates the ECG wave. The QRS complex ends at the J point and from here starts the ST segment. The ST segment which lies between the J point and the onset of the T wave, represents the period between the end of ventricular depolarisation and repolarisation. The T wave i ...
... and thus its depolarisation dominates the ECG wave. The QRS complex ends at the J point and from here starts the ST segment. The ST segment which lies between the J point and the onset of the T wave, represents the period between the end of ventricular depolarisation and repolarisation. The T wave i ...
Spring 2016: Multimodal Management of Atrial Fibrillation
... physicians also have expertise in treating adult patients with congenital heart disease (ACHD) who develop afib, a subgroup of patients with afib who don’t have many experienced medical centers at which to ...
... physicians also have expertise in treating adult patients with congenital heart disease (ACHD) who develop afib, a subgroup of patients with afib who don’t have many experienced medical centers at which to ...
Are Diabetic Patients at Increased Risk of Arrhythmias?
... neuropathy, and these non-coronary atherosclerotic pathophysiological processes have the potential to increase the risk of sudden cardiac death. 29 The arrhythmological substrate in ischaemic heart disease includes myocardial re-entry due to scar formation, compensatory hypertrophy in non-infarcted ...
... neuropathy, and these non-coronary atherosclerotic pathophysiological processes have the potential to increase the risk of sudden cardiac death. 29 The arrhythmological substrate in ischaemic heart disease includes myocardial re-entry due to scar formation, compensatory hypertrophy in non-infarcted ...
International Journal of Cardiovascular Research
... worldwide due to associated high morbidity and mortality [1,2]. This stroke-related burden will be increasing in future decades due to aging population. Direct and indirect management of such disease is costly particularly in developing countries where health insurance is barely available [3,4]. Man ...
... worldwide due to associated high morbidity and mortality [1,2]. This stroke-related burden will be increasing in future decades due to aging population. Direct and indirect management of such disease is costly particularly in developing countries where health insurance is barely available [3,4]. Man ...
Left Atrial Fibrosis
... including alterations in gap junction protein expression,12-15 attendant changes in myocyte coupling, and the development of interstitial fibrosis and atrial scarring.11 Together, these factors conspire to reduce conduction velocity, generate regions of anisotropic conduction and lines of frank cond ...
... including alterations in gap junction protein expression,12-15 attendant changes in myocyte coupling, and the development of interstitial fibrosis and atrial scarring.11 Together, these factors conspire to reduce conduction velocity, generate regions of anisotropic conduction and lines of frank cond ...
Jatrogenic left ventricular- right atrial fistula following mitral
... Signs and symptoms of congestive heart failure persisted despite intensive antifailure treatment. Clinical examination revealed a hyperdynamic left and right precordium and a systolic murmur grade 3/6, best audible at the left sternal edge-aortic area, not radiating to the axilla. The chest radiogra ...
... Signs and symptoms of congestive heart failure persisted despite intensive antifailure treatment. Clinical examination revealed a hyperdynamic left and right precordium and a systolic murmur grade 3/6, best audible at the left sternal edge-aortic area, not radiating to the axilla. The chest radiogra ...
Lifestyle management to prevent and treat atrial fibrillation
... metabolic syndrome have also been associated with AF [7–10]. Further, the presence of increasing numbers of concomitant risk factors such as hypertension, diabetes mellitus, and cardiomyopathy in the same individual has been associated with a higher risk of developing AF as well as a more persistent ...
... metabolic syndrome have also been associated with AF [7–10]. Further, the presence of increasing numbers of concomitant risk factors such as hypertension, diabetes mellitus, and cardiomyopathy in the same individual has been associated with a higher risk of developing AF as well as a more persistent ...
Atrial Electrophysiological Remodeling and Fibrillation in Heart Failure
... by independent academic editor. Upon submission manuscript was subject to antiplagiarism scanning. Prior to publication all authors have given signed confirmation of agreement to article publication and compliance with all applicable ethical and legal requirements, including the accuracy of author a ...
... by independent academic editor. Upon submission manuscript was subject to antiplagiarism scanning. Prior to publication all authors have given signed confirmation of agreement to article publication and compliance with all applicable ethical and legal requirements, including the accuracy of author a ...
ACLS-ECG-Slides - UCSF Department of Anesthesia and
... sinus node at a rate appropriate to the age and state of activity of the individual, and then the propagation of that signal in an orderly manner through the atria, AV junction, ventricular specialized conducting system and the ventricular myocardium ...
... sinus node at a rate appropriate to the age and state of activity of the individual, and then the propagation of that signal in an orderly manner through the atria, AV junction, ventricular specialized conducting system and the ventricular myocardium ...
BRINAVESS, INN-vernakalant hydrochloride
... and III) 4-24 hours prior to vernakalant due to lack of data. BRINAVESS should not be administered in patients who received intravenous AADs (class I and III) within 4 hours prior to vernakalant (see section 4.3). BRINAVESS should be used with caution in patients on oral AADs (class I and III), due ...
... and III) 4-24 hours prior to vernakalant due to lack of data. BRINAVESS should not be administered in patients who received intravenous AADs (class I and III) within 4 hours prior to vernakalant (see section 4.3). BRINAVESS should be used with caution in patients on oral AADs (class I and III), due ...
Central region of SA node
... networks. Each cell has a single nucleus. At its end, where it touches another cell, there is a specialized intercellular junction called an "intercalated disc," which occurs only in cardiac tissue. Cardiac muscle is controlled involuntarily and, in fact, can continue to function without being stimu ...
... networks. Each cell has a single nucleus. At its end, where it touches another cell, there is a specialized intercellular junction called an "intercalated disc," which occurs only in cardiac tissue. Cardiac muscle is controlled involuntarily and, in fact, can continue to function without being stimu ...
New Insights into Mechanisms of Atrial Fibrillation
... structural remodeling is characterized by myocyte cell loss, and by changes in extracellular matrix composition, with both diffuse interstitial and patchy fibrosis. Similar alterations were also observed in the atrial tissue of patients with AF (Frustaci et al. 1997). Structural remodeling results i ...
... structural remodeling is characterized by myocyte cell loss, and by changes in extracellular matrix composition, with both diffuse interstitial and patchy fibrosis. Similar alterations were also observed in the atrial tissue of patients with AF (Frustaci et al. 1997). Structural remodeling results i ...
Surgery for Atrial Fibrillation - ANNALS Academy of Medicine
... continue anticoagulation for up to 1 year after surgery. No patient has had an embolic stroke during the follow-up period. In contrast, however, 1 patient succumbed to a haemorrhagic stroke 5 months after mechanical aortic valve replacement. He was in sinus rhythm. Anticoagulation in this patient wa ...
... continue anticoagulation for up to 1 year after surgery. No patient has had an embolic stroke during the follow-up period. In contrast, however, 1 patient succumbed to a haemorrhagic stroke 5 months after mechanical aortic valve replacement. He was in sinus rhythm. Anticoagulation in this patient wa ...
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.