2014 Life threatening causes of syncope
... The majority of patients with syncope in whom there is concern regarding underlying structural heart disease will have evidence of coronary artery disease or non-ischemic dilated cardiomyopathy. This is typically evident in the clinical history, and is a clear sign of risk of sudden death attributed ...
... The majority of patients with syncope in whom there is concern regarding underlying structural heart disease will have evidence of coronary artery disease or non-ischemic dilated cardiomyopathy. This is typically evident in the clinical history, and is a clear sign of risk of sudden death attributed ...
Arrhythmia-Induced Cardiomyopathies
... postural orthostatic tachycardia syndrome (POTS), although the average heart rate can be >100 beats/ min. There is no specific heart rate cutoff at which AIC develops. The rate is not well defined, may be age dependent, and is likely lower than initially suspected. Little is known about patient factor ...
... postural orthostatic tachycardia syndrome (POTS), although the average heart rate can be >100 beats/ min. There is no specific heart rate cutoff at which AIC develops. The rate is not well defined, may be age dependent, and is likely lower than initially suspected. Little is known about patient factor ...
How to diagnose diastolic heart failure: a consensus statement on
... with sequential coronary angiograms, are required to investigate whether HFNEF is indeed a precursor stage to HFREF and to identify patient characteristics, such as female gender,50 regular aerobic exercise,51 chronic alcohol ingestion,52 genetic background,53 and comorbidities, such as diabetes,54, ...
... with sequential coronary angiograms, are required to investigate whether HFNEF is indeed a precursor stage to HFREF and to identify patient characteristics, such as female gender,50 regular aerobic exercise,51 chronic alcohol ingestion,52 genetic background,53 and comorbidities, such as diabetes,54, ...
biomarkers in acute myocardial infarction
... resulting from insufficient blood flow to the heart caused by the narrowing or blockage of one or more blood vessels to the heart; the conditions included in this group range from unstable angina to acute myocardial infarction (AMI) and are usually characterized by chest pain, upper body discomfort ...
... resulting from insufficient blood flow to the heart caused by the narrowing or blockage of one or more blood vessels to the heart; the conditions included in this group range from unstable angina to acute myocardial infarction (AMI) and are usually characterized by chest pain, upper body discomfort ...
Canadian Cardiovascular Society Consensus Conference
... failure – 2008 update: Best practices for the transition of care of heart failure patients, and the recognition, investigation and treatment of cardiomyopathies. Can J Cardiol 2008;24(1):21-40. Heart failure is a clinical syndrome that normally requires health care to be provided by both specialists ...
... failure – 2008 update: Best practices for the transition of care of heart failure patients, and the recognition, investigation and treatment of cardiomyopathies. Can J Cardiol 2008;24(1):21-40. Heart failure is a clinical syndrome that normally requires health care to be provided by both specialists ...
Assessment of systolic and diastolic ventricular properties - AJP
... is performed that acutely changes the loading conditions on the heart but has no effect on myocardial contractility1 (e.g., transient inferior vena caval occlusion to reduce preload, administration of phenylephrine to increase afterload, etc.) a family of loops is obtained (Fig. 1, B and C). The end ...
... is performed that acutely changes the loading conditions on the heart but has no effect on myocardial contractility1 (e.g., transient inferior vena caval occlusion to reduce preload, administration of phenylephrine to increase afterload, etc.) a family of loops is obtained (Fig. 1, B and C). The end ...
Titin isoform switching is a major cardiac adaptive response in
... time, chamber dilation and elevated end-diastolic pressures lead to congestive heart failure if no intervention is sought (23, 35). However, hibernating grizzly bears tolerate extremely low heart rates without ventricular chamber dilation (30). The mechanisms that circumvent chamber dilation are not ...
... time, chamber dilation and elevated end-diastolic pressures lead to congestive heart failure if no intervention is sought (23, 35). However, hibernating grizzly bears tolerate extremely low heart rates without ventricular chamber dilation (30). The mechanisms that circumvent chamber dilation are not ...
Giant left anterior descending artery aneurysm resulting in sudden
... likely induces alterations in blood flow and stasis of coronary blood flow, which may predispose patients to ischemic symptoms.11 If the CAA is large enough, it might compress adjacent structures with associated symptoms,3 as exemplified by a reported case of a giant CAA causing superior vena cava s ...
... likely induces alterations in blood flow and stasis of coronary blood flow, which may predispose patients to ischemic symptoms.11 If the CAA is large enough, it might compress adjacent structures with associated symptoms,3 as exemplified by a reported case of a giant CAA causing superior vena cava s ...
Prediction of left heart filling pressure and its - Heart
... myocardial infarction. In order to predict the filling pressure from the P wave of the electrocardiogram,flowdirected Swan-Ganz catheters were inserted in 40 acutely ill patients (36 with acute myocardial infarction or serious angina). An elementary electrocardiographic measurement, the P terminal f ...
... myocardial infarction. In order to predict the filling pressure from the P wave of the electrocardiogram,flowdirected Swan-Ganz catheters were inserted in 40 acutely ill patients (36 with acute myocardial infarction or serious angina). An elementary electrocardiographic measurement, the P terminal f ...
Electrocardiographic Characteristics and SCN5A Mutations in
... sodium current enhances ventricular fibrillation susceptibility. (Circ Arrhythm Electrophysiol. 2011;4:874-881.) Key Words: arrhythmia 䡲 sodium channel 䡲 electrophysiology 䡲 genetics 䡲 mutations ...
... sodium current enhances ventricular fibrillation susceptibility. (Circ Arrhythm Electrophysiol. 2011;4:874-881.) Key Words: arrhythmia 䡲 sodium channel 䡲 electrophysiology 䡲 genetics 䡲 mutations ...
5 Precordial Pulsations
... pressure. In the process, the closed mitral apparatus must exert an opposite pull on the individual papillary muscle groups. It is possible that the asymmetrical attachment of the mitral apparatus to the left ventricle may result in an asymmetrical pull on the papillary muscles with a stronger pull ...
... pressure. In the process, the closed mitral apparatus must exert an opposite pull on the individual papillary muscle groups. It is possible that the asymmetrical attachment of the mitral apparatus to the left ventricle may result in an asymmetrical pull on the papillary muscles with a stronger pull ...
Role of PET/ CT for the Identification of Cardiac Sarcoid Disease
... signify a moderate-to-large sized（4-5 segments）perfusion defect of the septum in the basal and mid-segment with some extension into the inferior wall likely to reflect severe fibrosis and/or scar tissue. Corresponding 18F-FDG-PET/CT images with predominant and pronounced 18 F-FDG uptake in the anter ...
... signify a moderate-to-large sized（4-5 segments）perfusion defect of the septum in the basal and mid-segment with some extension into the inferior wall likely to reflect severe fibrosis and/or scar tissue. Corresponding 18F-FDG-PET/CT images with predominant and pronounced 18 F-FDG uptake in the anter ...
Electrocardiographic Characteristics and SCN5A Mutations in
... sodium current enhances ventricular fibrillation susceptibility. (Circ Arrhythm Electrophysiol. 2011;4:874-881.) Key Words: arrhythmia 䡲 sodium channel 䡲 electrophysiology 䡲 genetics 䡲 mutations ...
... sodium current enhances ventricular fibrillation susceptibility. (Circ Arrhythm Electrophysiol. 2011;4:874-881.) Key Words: arrhythmia 䡲 sodium channel 䡲 electrophysiology 䡲 genetics 䡲 mutations ...
![Gross differenteriation [sic] of the heart in the bovine and human](http://s1.studyres.com/store/data/016006447_1-197182a097e67a09ff3cf9fad4b00d3f-300x300.png)
Gross differenteriation [sic] of the heart in the bovine and human
... number of chordae tendineae and papillary muscles associated with the mitral and tricuspid valves; thickness of the ventricular walls; dimensions of the moderator band; condition of the semilunar valves and position of the coronary arteries in association with the aortic semilunars; size and conditi ...
... number of chordae tendineae and papillary muscles associated with the mitral and tricuspid valves; thickness of the ventricular walls; dimensions of the moderator band; condition of the semilunar valves and position of the coronary arteries in association with the aortic semilunars; size and conditi ...
Heart Blocks and Pacemakers - Calgary Emergency Medicine
... ► If symptoms occur with dual chamber pacer then optimizing timing of ventricular pacing is key ► Beware: symptoms of pacemaker syndrome and pacemaker malfunction are the same! ...
... ► If symptoms occur with dual chamber pacer then optimizing timing of ventricular pacing is key ► Beware: symptoms of pacemaker syndrome and pacemaker malfunction are the same! ...
Update on myocarditis - Centre for Rare Cardiovascular Diseases
... Myocardits can occur at any age but young individuals are particularly prone to the disease. Cardiac symptoms are variable and include reduced functional capacity due to dyspnoe and/or fatigue, palpitations, precordial chest pain which result from associated pericarditis or coronary artery spasms. M ...
... Myocardits can occur at any age but young individuals are particularly prone to the disease. Cardiac symptoms are variable and include reduced functional capacity due to dyspnoe and/or fatigue, palpitations, precordial chest pain which result from associated pericarditis or coronary artery spasms. M ...
Minimally Invasive Aortic Valve Replacement 1
... such have been proven to slow that disease path life. Again, it's a progressive disease from sclerosis, or the beginning of thickening of the valve, to aortic stenosis. And as an underscore, we want to make sure that patients who have been diagnosed with aortic stenosis or early aortic stenosis know ...
... such have been proven to slow that disease path life. Again, it's a progressive disease from sclerosis, or the beginning of thickening of the valve, to aortic stenosis. And as an underscore, we want to make sure that patients who have been diagnosed with aortic stenosis or early aortic stenosis know ...
Floppy mitral valve/mitral valve prolapse/mitral valvular
... degree of MVR at rest and during physical activities, as well as its effect on left atrial and left ventricular structure and function, are necessary. Advances in colour flow Doppler, transoesophageal and three-dimensional echocardiography allow clinicians to better define and follow the progress of ...
... degree of MVR at rest and during physical activities, as well as its effect on left atrial and left ventricular structure and function, are necessary. Advances in colour flow Doppler, transoesophageal and three-dimensional echocardiography allow clinicians to better define and follow the progress of ...
Early Fetal Echocardiography at the Time of 11 –13 Weeks Scan
... Early Fetal Echocardiography (EFE) is generally defined as a fetal cardiac scan performed until 16 weeks of gestation. Fetal indications for EFE in the first trimester are in strong connection with ultrasound findings during routine nuchal scan: early diagnosed extracardiac malformations, abnormal d ...
... Early Fetal Echocardiography (EFE) is generally defined as a fetal cardiac scan performed until 16 weeks of gestation. Fetal indications for EFE in the first trimester are in strong connection with ultrasound findings during routine nuchal scan: early diagnosed extracardiac malformations, abnormal d ...
Diminished stroke volume during inspiration
... ABSTRACT In 12 conscious dogs, a three-dimensional array of pulse-transit ultrasonic transducers used to measure left ventricular anterior-posterior minor, septal-free wall minor, and basal-apical major diameters. Matched micromanometers measured left ventricular, right ventricular, and intrapleural ...
... ABSTRACT In 12 conscious dogs, a three-dimensional array of pulse-transit ultrasonic transducers used to measure left ventricular anterior-posterior minor, septal-free wall minor, and basal-apical major diameters. Matched micromanometers measured left ventricular, right ventricular, and intrapleural ...
Isorhythmic AV Dissociation
... was applied to the carotid sinuses. This resulted in a significant prolongation of the next R-R interval of 0.30 sec, but produced a lengthening of the corresponding P-P interval of only 0.04 sec. As a consequence, the P wave preceded the QRS by 0.20 sec (presumably sinus rhythm) during the last fou ...
... was applied to the carotid sinuses. This resulted in a significant prolongation of the next R-R interval of 0.30 sec, but produced a lengthening of the corresponding P-P interval of only 0.04 sec. As a consequence, the P wave preceded the QRS by 0.20 sec (presumably sinus rhythm) during the last fou ...
Complete valvular heart apparatus model from
... heart and the systemic and pulmonary circulations. Valvular Heart Disease (VHD) which affects 2.5% of the global population and requires yearly over 100,000 surgeries in the United States alone, is a representative instance for the growing public health problem provoked by cardiovascular diseases. H ...
... heart and the systemic and pulmonary circulations. Valvular Heart Disease (VHD) which affects 2.5% of the global population and requires yearly over 100,000 surgeries in the United States alone, is a representative instance for the growing public health problem provoked by cardiovascular diseases. H ...
The Monophasic Action Potential in Clinical Cardiology
... Department of Veterans Affairs Medical Center, Oklahoma City, Oklahoma, USA ...
... Department of Veterans Affairs Medical Center, Oklahoma City, Oklahoma, USA ...
Surgical Treatment of Ischemic Mitral Valve Regurgitation
... In cases of old myocardial infarction, the presence of mitral valve regurgitation is one of the predicting factors of long-term prognosis. The mechanism of ischemic mitral regurgitation consists of mitral annular dilatation, left ventricular (LV) dilatation followed by tethering of the mitral valve, ...
... In cases of old myocardial infarction, the presence of mitral valve regurgitation is one of the predicting factors of long-term prognosis. The mechanism of ischemic mitral regurgitation consists of mitral annular dilatation, left ventricular (LV) dilatation followed by tethering of the mitral valve, ...
Aortic Stenosis: Diagnosis and Treatment
... Aortic Stenosis: Diagnosis and Treatment Aortic stenosis is the most important cardiac valve disease in developed countries, affecting 3 percent of persons older than 65 years. Although the survival rate in asymptomatic patients with aortic stenosis is comparable to that in age- and sex-matched cont ...
... Aortic Stenosis: Diagnosis and Treatment Aortic stenosis is the most important cardiac valve disease in developed countries, affecting 3 percent of persons older than 65 years. Although the survival rate in asymptomatic patients with aortic stenosis is comparable to that in age- and sex-matched cont ...
Hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy (HCM) is a primary disease of the myocardium (the muscle of the heart) in which a portion of the myocardium is hypertrophied (thickened) without any obvious cause, creating functional impairment of the cardiac muscle. It is a leading cause of sudden cardiac death in young athletes.The occurrence of hypertrophic cardiomyopathy is a significant cause of sudden unexpected cardiac death in any age group and as a cause of disabling cardiac symptoms. Younger people are likely to have a more severe form of hypertrophic cardiomyopathy.HCM is frequently asymptomatic until sudden cardiac death, and for this reason some suggest routinely screening certain populations for this disease.A cardiomyopathy is a disease that affects the muscle of the heart. With HCM, the myocytes (cardiac contractile cells) in the heart increase in size, which results in the thickening of the heart muscle. In addition, the normal alignment of muscle cells is disrupted, a phenomenon known as myocardial disarray. HCM also causes disruptions of the electrical functions of the heart. HCM is most commonly due to a mutation in one of nine sarcomeric genes that results in a mutated protein in the sarcomere, the primary component of the myocyte (the muscle cell of the heart). These are predominantly single-point missense mutations in the genes for beta-myosin heavy chain (MHC), myosin-binding protein C, cardiac troponinT, or tropomyosin. These mutations cause myofibril and myocyte structural abnormalities and possible deficiencies in force generation. Not to be confused with dilated cardiomyopathy or any other cardiomyopathy.While most literature so far focuses on European, American, and Japanese populations, HCM appears in all ethnic groups. The prevalence of HCM is about 0.2% to 0.5% of the general population.