DOI: 10.1161/CIRCULATIONAHA.108.191098 published online Feb
... depression in leads whose positive pole is directed opposite to (ie, approximately 180° away from) the leads that show the ST-segment elevation and vice versa. If no body surface lead fulfills this condition, then only ST-segment elevation or depression will be displayed on the routine 12-lead ECG. ...
... depression in leads whose positive pole is directed opposite to (ie, approximately 180° away from) the leads that show the ST-segment elevation and vice versa. If no body surface lead fulfills this condition, then only ST-segment elevation or depression will be displayed on the routine 12-lead ECG. ...
2003 The European Society of Cardiology
... coronary occlusion well before necrosis.17 However, wall motion abnormalities are not specific for acute myocardial infarction and may be due to ischaemia or an old infarction. Two-dimensional echocardiography is of particular value for the diagnosis of other causes of chest pain such as acute aorti ...
... coronary occlusion well before necrosis.17 However, wall motion abnormalities are not specific for acute myocardial infarction and may be due to ischaemia or an old infarction. Two-dimensional echocardiography is of particular value for the diagnosis of other causes of chest pain such as acute aorti ...
On the Utility of T-Wave Amplitude: A Reply to Schwartz and Weiss
... about changes in TWA, the AVR lead is the only lead that is inconsistent with respect to polarity. Related to this confusion surrounding the generation of “opposite pictures of cardiac electrical events” is the statement that “if TWA attenuation occurs in AVR, TWA augmentation is likely to occur in ...
... about changes in TWA, the AVR lead is the only lead that is inconsistent with respect to polarity. Related to this confusion surrounding the generation of “opposite pictures of cardiac electrical events” is the statement that “if TWA attenuation occurs in AVR, TWA augmentation is likely to occur in ...
On the Utility of T-Wave Amplitude
... about changes in TWA, the AVR lead is the only lead that is inconsistent with respect to polarity. Related to this confusion surrounding the generation of “opposite pictures of cardiac electrical events” is the statement that “if TWA attenuation occurs in AVR, TWA augmentation is likely to occur in ...
... about changes in TWA, the AVR lead is the only lead that is inconsistent with respect to polarity. Related to this confusion surrounding the generation of “opposite pictures of cardiac electrical events” is the statement that “if TWA attenuation occurs in AVR, TWA augmentation is likely to occur in ...
Slideshow
... Contraction creates pressure, opening the pulmonary and aortic valves Blood from the right ventricle flows to the lungs Blood from the left ventricle flows through the aorta to the body ...
... Contraction creates pressure, opening the pulmonary and aortic valves Blood from the right ventricle flows to the lungs Blood from the left ventricle flows through the aorta to the body ...
ACC/AAP/AHA/ASE/HRS/SCAI/SCCT/SCMR/SOPE 2014
... In an effort to respond to the need for the rational use of services in the delivery of high quality care, the ACC has undertaken a process to determine the appropriate use of cardiovascular imaging and procedures for selected patient indications. AUC publications reflect an ongoing effort by the ACC ...
... In an effort to respond to the need for the rational use of services in the delivery of high quality care, the ACC has undertaken a process to determine the appropriate use of cardiovascular imaging and procedures for selected patient indications. AUC publications reflect an ongoing effort by the ACC ...
Impaired myocardial capillarogenesis and increased
... (Table 2), heart weight (data not shown) and relative left ventricular weight, that is, left ventricular weight/body weight ratio (Table 2) in all ANG IItreated groups compared to untreated animals of the same genotype (for comparison see Table 1). Figure 4 illustrates the increase in relative left ...
... (Table 2), heart weight (data not shown) and relative left ventricular weight, that is, left ventricular weight/body weight ratio (Table 2) in all ANG IItreated groups compared to untreated animals of the same genotype (for comparison see Table 1). Figure 4 illustrates the increase in relative left ...
Techniques for automated local activation time annotation and
... preferred when a precise or absolute local activation time is required for comparison with other quantities [69]. To overcome the challenges of local activation time annotation, a number of other algorithms have been proposed. These are detailed in the remainder of this section. ...
... preferred when a precise or absolute local activation time is required for comparison with other quantities [69]. To overcome the challenges of local activation time annotation, a number of other algorithms have been proposed. These are detailed in the remainder of this section. ...
Management of acute myocardial infarction in patients presenting
... a useful bedside technique in the triage of patients with acute chest pain. Regional wall motion abnormalities occur within seconds after coronary occlusion well before necrosis.17 However, wall motion abnormalities are not specific for acute myocardial infarction and may be due to ischaemia or an o ...
... a useful bedside technique in the triage of patients with acute chest pain. Regional wall motion abnormalities occur within seconds after coronary occlusion well before necrosis.17 However, wall motion abnormalities are not specific for acute myocardial infarction and may be due to ischaemia or an o ...
Aortic Stenosis In The Elderly
... ventricular hypertrophy is an adaptive mechanism responsible for normalization of wall stress in patients with aortic stenosis. However, increased left ventricular stiffness results, with a subsequent rise in left ventricular filling pressure, and pulmonary congestion develops, especially during exe ...
... ventricular hypertrophy is an adaptive mechanism responsible for normalization of wall stress in patients with aortic stenosis. However, increased left ventricular stiffness results, with a subsequent rise in left ventricular filling pressure, and pulmonary congestion develops, especially during exe ...
Increased Connective Tissue Growth Factor Relative
... pidemiological studies have established that 40% to 50% of patients with heart failure have normal or minimally impaired left ventricular (LV) ejection fraction, a clinical syndrome that is commonly referred to as diastolic heart failure (DHF). These patients typically have cardiac hypertrophy that ...
... pidemiological studies have established that 40% to 50% of patients with heart failure have normal or minimally impaired left ventricular (LV) ejection fraction, a clinical syndrome that is commonly referred to as diastolic heart failure (DHF). These patients typically have cardiac hypertrophy that ...
Diagnosis of Anomalous Coronary Arteries in 64-MDCT
... in angiography [1, 2, 6, 13], and in 0.3% of patients at autopsy [14, 15]. The ratio of coronar y ar ter y anomalies is 15% in our study. But when excluding myocardial bridging, the number decreases to 2.4%. Congenital coronary artery anomalies are the second most common cause of sudden death due to ...
... in angiography [1, 2, 6, 13], and in 0.3% of patients at autopsy [14, 15]. The ratio of coronar y ar ter y anomalies is 15% in our study. But when excluding myocardial bridging, the number decreases to 2.4%. Congenital coronary artery anomalies are the second most common cause of sudden death due to ...
ICD-10-CM
... inner serous pericardium and the outer fibrous pericardium. MIs are initially classified into two categories depending on the depth of necrosis of the tissue layers. A STEMI myocardial infarction occurs when there is a transmural infarction of the myocardium— which means that the entire thickness of ...
... inner serous pericardium and the outer fibrous pericardium. MIs are initially classified into two categories depending on the depth of necrosis of the tissue layers. A STEMI myocardial infarction occurs when there is a transmural infarction of the myocardium— which means that the entire thickness of ...
Tissue-specific effects of acetylcholine in the canine heart
... potential (AP) duration (APD) have also been observed (2). Vagal tone plays a crucial role in atrial fibrillation (AF), and increased activity of IK,ACh has been linked to AF in several animal models (5, 18, 29). Constitutively active IK,ACh has been demonstrated in patients with persistent AF, wher ...
... potential (AP) duration (APD) have also been observed (2). Vagal tone plays a crucial role in atrial fibrillation (AF), and increased activity of IK,ACh has been linked to AF in several animal models (5, 18, 29). Constitutively active IK,ACh has been demonstrated in patients with persistent AF, wher ...
Xanthine Derivatives in the Heart: Blessed or Cursed?
... slow inward current [11]. In contrast, there are studies indicating an inhibitory action of caffeine on ICa [12, 13]. In rat ventricular myocytes, Varro et al. [14] found that high concentration (20 mM) of caffeine reduced the amplitude of the inward rectifier potassium and inward calcium currents. ...
... slow inward current [11]. In contrast, there are studies indicating an inhibitory action of caffeine on ICa [12, 13]. In rat ventricular myocytes, Varro et al. [14] found that high concentration (20 mM) of caffeine reduced the amplitude of the inward rectifier potassium and inward calcium currents. ...
47 an analysis of control of the ventricle of the mollusc mercenaria
... increased when external Ca2+ was raised from 0 to 9mmol l21. Both the amplitude and frequency of beats were maximal at a Ca2+ concentration around 9mmol l21. Concentrations of extracellular Ca2+ greater than 18mmol l21 inhibited beating and caused a slight membrane depolarization. The membrane becam ...
... increased when external Ca2+ was raised from 0 to 9mmol l21. Both the amplitude and frequency of beats were maximal at a Ca2+ concentration around 9mmol l21. Concentrations of extracellular Ca2+ greater than 18mmol l21 inhibited beating and caused a slight membrane depolarization. The membrane becam ...
DIETARY FISH OIL AND EXPERIMENTAL ATHEROSCLEROSIS
... diet in humans. In the following overview on the effects .of n-3 PUFA's on plasmalipids we have included only studies with doses of about 2 g EPA/day or more. We define controlled studies as those in which the effects of a fish (oil) diet were compared to those of a control diet by the same or by a ...
... diet in humans. In the following overview on the effects .of n-3 PUFA's on plasmalipids we have included only studies with doses of about 2 g EPA/day or more. We define controlled studies as those in which the effects of a fish (oil) diet were compared to those of a control diet by the same or by a ...
Regulation of atrial natriuretic peptide
... Atrial natriuretic peptide (ANP) a powerful vasodilator, and a protein (28-amino acid peptide) hormone secreted by heart muscle cells. It is released in response to atrial distention, stretching of the vessel walls, sympathetic stimulation of β-adrenoceptors, raised sodium concentration, angiotensin ...
... Atrial natriuretic peptide (ANP) a powerful vasodilator, and a protein (28-amino acid peptide) hormone secreted by heart muscle cells. It is released in response to atrial distention, stretching of the vessel walls, sympathetic stimulation of β-adrenoceptors, raised sodium concentration, angiotensin ...
C:\Users\SSP\Documents\My Web Sites\CINC.ORG\html\2011
... CT and Ou Shan-xing*, Zhang Li and Qian Min Application of DSCT in The Assessment of The Pulmonary Arteries in Complex Congenital Heart Disease with Diminished Pulmonary Blood Flow Zhang Li*, Ou Shan-xing and Peng Guangming Does Reduced Radiation Dose Adversely Affect the Ability to Detect Abnormal ...
... CT and Ou Shan-xing*, Zhang Li and Qian Min Application of DSCT in The Assessment of The Pulmonary Arteries in Complex Congenital Heart Disease with Diminished Pulmonary Blood Flow Zhang Li*, Ou Shan-xing and Peng Guangming Does Reduced Radiation Dose Adversely Affect the Ability to Detect Abnormal ...
Molecular distinction between physiological and pathological
... from media reports of sudden death in young athletes, it has been questioned whether highly trained athletes develop pathological conditions. Notably, there is currently no evidence in the healthy population (excluding persons with underlying cardiovascular disease or genetic disorders) showing that ...
... from media reports of sudden death in young athletes, it has been questioned whether highly trained athletes develop pathological conditions. Notably, there is currently no evidence in the healthy population (excluding persons with underlying cardiovascular disease or genetic disorders) showing that ...
? FAQs Epipen®
... general anaesthesia with halogenated hydrocarbons or cyclopropane, and in patients where vasopressor drugs are contraindicated. Precautions: Patients with allergies to sulphites, cardiac dilation, ventricular fibrillation, myocardial infarction and other heart conditions, elderly, diabetes and other ...
... general anaesthesia with halogenated hydrocarbons or cyclopropane, and in patients where vasopressor drugs are contraindicated. Precautions: Patients with allergies to sulphites, cardiac dilation, ventricular fibrillation, myocardial infarction and other heart conditions, elderly, diabetes and other ...
New Insights into Mechanisms of Atrial Fibrillation
... segmental ostial ablation guided by pulmonary vein potentials or circumferential pulmonary vein ablation, and the creation of linear lesions. Currently, circumferential ablation in combination with linear lesions in both atria appears to be the most effective approach (Fig. 1). This complex procedur ...
... segmental ostial ablation guided by pulmonary vein potentials or circumferential pulmonary vein ablation, and the creation of linear lesions. Currently, circumferential ablation in combination with linear lesions in both atria appears to be the most effective approach (Fig. 1). This complex procedur ...
Standard transthoracic echocardiography and transesophageal
... which encourages leaflet apposition in combination with the apical force on commissural areas by the papillary muscles (8). The anterior part of the annulus is, however, relatively immobile compared to the posterior annulus. Hence, dynamic changes in the mitral annulus are likely due to movement of ...
... which encourages leaflet apposition in combination with the apical force on commissural areas by the papillary muscles (8). The anterior part of the annulus is, however, relatively immobile compared to the posterior annulus. Hence, dynamic changes in the mitral annulus are likely due to movement of ...
Atrial Fibrillation: New Horizons
... Interest has also been generated in the role of angiotensin converting enzyme (ACE) inhibition in reversing the electrical and structural remodeling. Reverting to the sinus rhythm seems to be the best way for reverse remodeling of atria during atrial fibrillation. Antiarrhythmic drugs (AADs) are onl ...
... Interest has also been generated in the role of angiotensin converting enzyme (ACE) inhibition in reversing the electrical and structural remodeling. Reverting to the sinus rhythm seems to be the best way for reverse remodeling of atria during atrial fibrillation. Antiarrhythmic drugs (AADs) are onl ...
PDF
... unknown molecular basis. In the majority of the cases the PPM of the left side is completely missing. Patients with such a condition are either asymptomatic or have non-specific chest pain, and are without need for treatment. In contrast, patients with partial absence of the PPMs are at risk for her ...
... unknown molecular basis. In the majority of the cases the PPM of the left side is completely missing. Patients with such a condition are either asymptomatic or have non-specific chest pain, and are without need for treatment. In contrast, patients with partial absence of the PPMs are at risk for her ...
Arrhythmogenic right ventricular dysplasia
Arrhythmogenic right ventricular dysplasia (ARVD), also called arrhythmogenic right ventricular cardiomyopathy (ARVC) or arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C), is an inherited heart disease.ARVD is caused by genetic defects of the parts of heart muscle (also called myocardium or cardiac muscle) known as desmosomes, areas on the surface of heart muscle cells which link the cells together. The desmosomes are composed of several proteins, and many of those proteins can have harmful mutations.The disease is a type of nonischemic cardiomyopathy that involves primarily the right ventricle. It is characterized by hypokinetic areas involving the free wall of the right ventricle, with fibrofatty replacement of the right ventricular myocardium, with associated arrhythmias originating in the right ventricle.ARVD can be found in association with diffuse palmoplantar keratoderma, and woolly hair, in a autosomal recessive condition called Naxos disease, because this genetic abnormality can affect also the integrity of the superficial layers of the skin most exposed to pressure stress.ARVC/D is an important cause of ventricular arrhythmias in children and young adults. It is seen predominantly in males, and 30-50% of cases have a familial distribution.