![Non-invasive detection of conduction pathways](http://s1.studyres.com/store/data/016101753_1-18ffcc284b6476ab4cbfe049f18fe856-300x300.png)
Non-invasive detection of conduction pathways
... vulnerability to AF.12,17,18 Recently, three vectorcardiographic atrial wave patterns were related to distinct inter-atrial conduction pathways.9 Magnetocardiography (MCG) is a non-invasive method complementary to ECG to examine cardiac electromagnetic activity. Essential to electrical and magnetic ...
... vulnerability to AF.12,17,18 Recently, three vectorcardiographic atrial wave patterns were related to distinct inter-atrial conduction pathways.9 Magnetocardiography (MCG) is a non-invasive method complementary to ECG to examine cardiac electromagnetic activity. Essential to electrical and magnetic ...
Print - Circulation
... collateral branch that arises from the aortic arch is a ductus arteriosus or a systemic collateral artery.8-10 Third, debate exists on whether the collateral arterial supply should be considered functional or nutritive. These vessels are generally reported as a compensatory dilatation or hypertrophy ...
... collateral branch that arises from the aortic arch is a ductus arteriosus or a systemic collateral artery.8-10 Third, debate exists on whether the collateral arterial supply should be considered functional or nutritive. These vessels are generally reported as a compensatory dilatation or hypertrophy ...
SERIES ‘‘PULMONARY HYPERTENSION: BASIC CONCEPTS FOR PRACTICAL MANAGEMENT’’
... progressive increase in pulmonary vascular resistance, ultimately leading to right ventricular failure and death. The functional capacity of the right ventricle is a major prognostic determinant. Our understanding of right ventricle performance in pulmonary hypertension has been hindered by the lack ...
... progressive increase in pulmonary vascular resistance, ultimately leading to right ventricular failure and death. The functional capacity of the right ventricle is a major prognostic determinant. Our understanding of right ventricle performance in pulmonary hypertension has been hindered by the lack ...
Atrioventricular septal defect (AVSD)
... repair for AVSD in a long term follow-up. Methods: The patients had a surgical correction for AVSD at Rikshospitalet from January 1979 to December 1999. The follow-up was closed in January 2009. AVSD with additional defects and syndromes were included. Results: Forty-two patients died during the obs ...
... repair for AVSD in a long term follow-up. Methods: The patients had a surgical correction for AVSD at Rikshospitalet from January 1979 to December 1999. The follow-up was closed in January 2009. AVSD with additional defects and syndromes were included. Results: Forty-two patients died during the obs ...
Atrial Electrophysiological Remodeling and Fibrillation in Heart Failure
... human atrium.14 The most recent investigation was conducted by Workman et al.15, whose findings were again different from those of previous reports. In atrial cells isolated from patients in sinus rhythm (right atrial appendage) with a reduced LVEF (,45%), APD90 was shorter than in patients with hig ...
... human atrium.14 The most recent investigation was conducted by Workman et al.15, whose findings were again different from those of previous reports. In atrial cells isolated from patients in sinus rhythm (right atrial appendage) with a reduced LVEF (,45%), APD90 was shorter than in patients with hig ...
the relationship between electrical and mechanical - Heart
... in the brachial artery (B.A.) and the right atrium (R.A.), and electrocardiogram lead IT. P-Ats = 0 080 sec. Q-BAs = 0 160 sec. In this and all other records the distance between vertical lines is equal to 0 040 sec. was from 0-031 to 0-035 sec. Garten (quoted by Wiggers, 1923), using an electrical ...
... in the brachial artery (B.A.) and the right atrium (R.A.), and electrocardiogram lead IT. P-Ats = 0 080 sec. Q-BAs = 0 160 sec. In this and all other records the distance between vertical lines is equal to 0 040 sec. was from 0-031 to 0-035 sec. Garten (quoted by Wiggers, 1923), using an electrical ...
Correlation between Pulmonary Vascular Resistance and Some
... Background: The Pulmonary Vascular Resistance (PVR) index is an important hemodynamic variable in making determinations regarding cardiopulmonary diseases and can be measured echocardiographically. The objective of this report is to examine the relationship between echocardiographic parameters of ve ...
... Background: The Pulmonary Vascular Resistance (PVR) index is an important hemodynamic variable in making determinations regarding cardiopulmonary diseases and can be measured echocardiographically. The objective of this report is to examine the relationship between echocardiographic parameters of ve ...
Dextrocardia and asplenia in situs inversus totalis in a baby: a case
... Situs inversus is a rare congenital anomaly reported to occur in 1 in 8000 to 1 in 25,000 patients [3]. No racial predilection exists for situs inversus. The male-to-female incidence is 1:1. The arrangements of the position of the abdominal viscera in dextrocardia may be normal (situs solitus), reve ...
... Situs inversus is a rare congenital anomaly reported to occur in 1 in 8000 to 1 in 25,000 patients [3]. No racial predilection exists for situs inversus. The male-to-female incidence is 1:1. The arrangements of the position of the abdominal viscera in dextrocardia may be normal (situs solitus), reve ...
Atrial Autonomic Innervation
... recordings from the stellate ganglia and vagal nerves. Indeed, the atrial tachyarrhythmias in dogs with pacing-induced congestive heart failure were prevented by prophylactic ablation of the stellate ganglion and the T2 to T4 thoracic sympathetic ganglia (36). In the same model of pacinginduced cong ...
... recordings from the stellate ganglia and vagal nerves. Indeed, the atrial tachyarrhythmias in dogs with pacing-induced congestive heart failure were prevented by prophylactic ablation of the stellate ganglion and the T2 to T4 thoracic sympathetic ganglia (36). In the same model of pacinginduced cong ...
New Advances in the Diagnosis and Management of Cardioembolic
... There are three high-risk cardiac origins1,6,13 for cardioembolic strokes: atrium, valve and ventricle. Atrial fibrillation (AF), atrial flutter, sick sinus syndrome, left atrial thrombus, left atrial appendage thrombus and left atrial myxoma are atrial origins. Mitral stenosis, prosthetic valve and ...
... There are three high-risk cardiac origins1,6,13 for cardioembolic strokes: atrium, valve and ventricle. Atrial fibrillation (AF), atrial flutter, sick sinus syndrome, left atrial thrombus, left atrial appendage thrombus and left atrial myxoma are atrial origins. Mitral stenosis, prosthetic valve and ...
2.02.26 Percutaneous LeftAtrial Appendage Closure
... Stroke is the most serious complication of atrial fibrillation (AF). The estimated incidence of stroke in nontreated patients with AF is 5% per year. Stroke associated with AF is primarily embolic in nature, tends to be more severe than the typical ischemic stroke, and causes higher rates of mortali ...
... Stroke is the most serious complication of atrial fibrillation (AF). The estimated incidence of stroke in nontreated patients with AF is 5% per year. Stroke associated with AF is primarily embolic in nature, tends to be more severe than the typical ischemic stroke, and causes higher rates of mortali ...
Pulmonary Vascular Diseases
... procedure-related mortality of 0.055%.9 Right heart catheterization determines the presence or absence of pulmonary hypertension, may allow definition of the underlying cause, and allows prognostication. The most critical aspect to right heart catheterization is that it should be performed appropria ...
... procedure-related mortality of 0.055%.9 Right heart catheterization determines the presence or absence of pulmonary hypertension, may allow definition of the underlying cause, and allows prognostication. The most critical aspect to right heart catheterization is that it should be performed appropria ...
Hypertrophic cardiomyopathy (HCM) is a disease in which the heart
... Hypertrophic cardiomyopathy is usually caused by gene mutations. It's thought these mutations cause the heart muscle to grow abnormally thick. People with hypertrophic cardiomyopathy also have an abnormal arrangement of heart muscle fibers. The heart muscle cells become jumbled, known as myofiber di ...
... Hypertrophic cardiomyopathy is usually caused by gene mutations. It's thought these mutations cause the heart muscle to grow abnormally thick. People with hypertrophic cardiomyopathy also have an abnormal arrangement of heart muscle fibers. The heart muscle cells become jumbled, known as myofiber di ...
Atrial Fibrillation and Heart Failure
... MOND study, in which patients took dofetilide, showed that the mortality of heart failure patients in sinus rhythm was 40% lower than in those who remained in atrial fibrillation.28 Similar conclusions were reached in the CHF-STAT study, where the mortality of patients who converted to sinus rhythm ...
... MOND study, in which patients took dofetilide, showed that the mortality of heart failure patients in sinus rhythm was 40% lower than in those who remained in atrial fibrillation.28 Similar conclusions were reached in the CHF-STAT study, where the mortality of patients who converted to sinus rhythm ...
Venous Thromboembolism Increases the Risk of Atrial Fibrillation
... Table 1 presents the baseline characteristics for subjects with VTE and subsequent atrial fibrillation, those with VTE only, those with atrial fibrillation only, and for those with neither VTE nor atrial fibrillation during follow-up. Among those with atrial fibrillation only, 55.7% were men, while of t ...
... Table 1 presents the baseline characteristics for subjects with VTE and subsequent atrial fibrillation, those with VTE only, those with atrial fibrillation only, and for those with neither VTE nor atrial fibrillation during follow-up. Among those with atrial fibrillation only, 55.7% were men, while of t ...
Article 4, January - June 2008
... pulmonary hypertension caused by increased pulmonary blood flow. An RVPEP/ VTIRVOT value of 0.4 to 0.6 seconds/m identified patients with pulmonary vascular resistance between 3 to 7.5 Wood units with 91% accuracy, while a value of > 0.6 seconds/m selected patients with total pulmonary vascular resi ...
... pulmonary hypertension caused by increased pulmonary blood flow. An RVPEP/ VTIRVOT value of 0.4 to 0.6 seconds/m identified patients with pulmonary vascular resistance between 3 to 7.5 Wood units with 91% accuracy, while a value of > 0.6 seconds/m selected patients with total pulmonary vascular resi ...
Left atrial systolic and diastolic function accompanying chronic rapid
... signals for left ventricular (LV) and left atrial (LA) pressures and atrial dimensions were digitized through an analog-todigital board (Data Translation, Marlboro, MA) interfaced to an IBM AT computer with a 2-ms sampling frequency and were stored on floppy disk. Fluid-filled catheters were connect ...
... signals for left ventricular (LV) and left atrial (LA) pressures and atrial dimensions were digitized through an analog-todigital board (Data Translation, Marlboro, MA) interfaced to an IBM AT computer with a 2-ms sampling frequency and were stored on floppy disk. Fluid-filled catheters were connect ...
Interventional Cardiology
... The indications for catheter ablation of arrhythmias in the CHD population are similar to the non-CHD population including significant symptoms, syncope or hemodynamic instability particularly when there has been failure or intolerance of medical therapy. Antiarrhythmic medications, such as beta blo ...
... The indications for catheter ablation of arrhythmias in the CHD population are similar to the non-CHD population including significant symptoms, syncope or hemodynamic instability particularly when there has been failure or intolerance of medical therapy. Antiarrhythmic medications, such as beta blo ...
Pulmonary atresia with intact ventricular septum
... 1971, the French surgeons Fontan and Baudet (1971) described the atriopulmonary connection with the purpose of draining all the caval blood directly to the pulmonary circulation, without passing through the right ventricle. TCPC was described by de Leval et al. in 1988. The connection between the in ...
... 1971, the French surgeons Fontan and Baudet (1971) described the atriopulmonary connection with the purpose of draining all the caval blood directly to the pulmonary circulation, without passing through the right ventricle. TCPC was described by de Leval et al. in 1988. The connection between the in ...
Structural study of pulmonary circulation and of heart in total
... In 5 (mean age at death 55 days) pulmonary venous blood drained to a supradiaphragmatic site; in the remaining 4 (mean age 20 days) to an infradiaphragmatic site. Structural changes were present in the pulmonary circulation in all patients, even in the youngest, an 8-day-old child. In both types of ...
... In 5 (mean age at death 55 days) pulmonary venous blood drained to a supradiaphragmatic site; in the remaining 4 (mean age 20 days) to an infradiaphragmatic site. Structural changes were present in the pulmonary circulation in all patients, even in the youngest, an 8-day-old child. In both types of ...
Chronic Atrial Fibrillation - American Academy of Family Physicians
... In most cases of suspected atrial fibrillation, a 12-lead ECG is sufficient for diagnosis confirmation. However, if diagnostic uncertainty remains, such as in chronic permanent atrial fibrillation, the use of 24-hour (or even seven-day) Holter monitoring or an event recorder (e.g., Cardiomemo) may a ...
... In most cases of suspected atrial fibrillation, a 12-lead ECG is sufficient for diagnosis confirmation. However, if diagnostic uncertainty remains, such as in chronic permanent atrial fibrillation, the use of 24-hour (or even seven-day) Holter monitoring or an event recorder (e.g., Cardiomemo) may a ...
Guidelines and Standards for Performance of a Pediatric
... signs, including cyanosis, failure to thrive, exerciseinduced chest pain or syncope, respiratory distress, murmurs, congestive heart failure, abnormal arterial pulses, or cardiomegaly. These may suggest categories of structural congenital heart disease including intracardiac left-to-right or right-t ...
... signs, including cyanosis, failure to thrive, exerciseinduced chest pain or syncope, respiratory distress, murmurs, congestive heart failure, abnormal arterial pulses, or cardiomegaly. These may suggest categories of structural congenital heart disease including intracardiac left-to-right or right-t ...
Guidelines and Standards for Performance of a Pediatric
... signs, including cyanosis, failure to thrive, exerciseinduced chest pain or syncope, respiratory distress, murmurs, congestive heart failure, abnormal arterial pulses, or cardiomegaly. These may suggest categories of structural congenital heart disease including intracardiac left-to-right or right-t ...
... signs, including cyanosis, failure to thrive, exerciseinduced chest pain or syncope, respiratory distress, murmurs, congestive heart failure, abnormal arterial pulses, or cardiomegaly. These may suggest categories of structural congenital heart disease including intracardiac left-to-right or right-t ...
A Thotharam HIV related pulmonaryhypertension in
... Patients with PH initially experience exertional dyspnoea, lethargy, and fatigue ,which are a result of inability to increase cardiac output with exercise 30. Symptoms at rest are reported in advanced cases. As PH advances and right ventricular failure develops, exertional chest pain, exertional syn ...
... Patients with PH initially experience exertional dyspnoea, lethargy, and fatigue ,which are a result of inability to increase cardiac output with exercise 30. Symptoms at rest are reported in advanced cases. As PH advances and right ventricular failure develops, exertional chest pain, exertional syn ...
Atrial Fibrillation After Lung Transplantation
... Post-operative pericaridits has been linked to atrial fibrillation after cardiac surgery .14 Pericarditis may cause atrial epicardial inflammatory injury and serve as a substrate for atrial fibrillation. For example, epicardial implantable cardioverterdefibrillator (ICD) implantation results in sign ...
... Post-operative pericaridits has been linked to atrial fibrillation after cardiac surgery .14 Pericarditis may cause atrial epicardial inflammatory injury and serve as a substrate for atrial fibrillation. For example, epicardial implantable cardioverterdefibrillator (ICD) implantation results in sign ...
Atrial septal defect
![](https://commons.wikimedia.org/wiki/Special:FilePath/Asd-web.jpg?width=300)
Atrial septal defect (ASD) is a congenital heart defect in which blood flows between the atria (upper chambers) of the heart. Normally, the atria are separated by a dividing wall, the interatrial septum. If this septum is defective or absent, then oxygen-rich blood can flow directly from the left side of the heart to mix with the oxygen-poor blood in the right side of the heart, or vice versa. This can lead to lower-than-normal oxygen levels in the arterial blood that supplies the brain, organs, and tissues. However, an ASD may not produce noticeable signs or symptoms, especially if the defect is small.A ""shunt"" is the presence of a net flow of blood through the defect, either from left to right or right to left. The amount of shunting present, if any, determines the hemodynamic significance of the ASD. A ""right-to-left-shunt"" typically poses the more dangerous scenario.During development of the fetus, the interatrial septum develops to separate the left and right atria. However, a hole in the septum called the foramen ovale, allows blood from the right atrium to enter the left atrium during fetal development. This opening allows blood to bypass the nonfunctional fetal lungs while the fetus obtains its oxygen from the placenta. A layer of tissue called the septum primum acts as a valve over the foramen ovale during fetal development. After birth, the pressure in the right side of the heart drops as the lungs open and begin working, causing the foramen ovale to close entirely. In approximately 25% of adults, the foramen ovale does not entirely seal. In these cases, any elevation of the pressure in the pulmonary circulatory system (due to pulmonary hypertension, temporarily while coughing, etc.) can cause the foramen ovale to remain open. This is known as a patent foramen ovale (PFO), which is a type of atrial septal defect.