20-1 Anatomy of the Heart
... • 20-1 Describe the anatomy of the heart, including vascular supply and pericardium structure, and trace the flow of blood through the heart, identifying the major blood vessels, chambers, and heart valves. • 20-2 Explain the events of an action potential in cardiac muscle, indicate the importance o ...
... • 20-1 Describe the anatomy of the heart, including vascular supply and pericardium structure, and trace the flow of blood through the heart, identifying the major blood vessels, chambers, and heart valves. • 20-2 Explain the events of an action potential in cardiac muscle, indicate the importance o ...
Model versus non-model based left ventricular
... Magnetic resonance imaging, Three-dimensional echocardiography, Left ventricular function, Pediatrics, Quantitative evaluation ...
... Magnetic resonance imaging, Three-dimensional echocardiography, Left ventricular function, Pediatrics, Quantitative evaluation ...
The right ventricle: interaction with the pulmonary circulation
... circulatory shock whereas the afterload-reducing agent will not. Examples of afterload reduction include using continuous positive airway pressure to abolish the negative swings in ITP, narcotics as sympathetolitics, and pharmacologic vasodilators (e.g., nitroglycerine). Furthermore, most of the RV ...
... circulatory shock whereas the afterload-reducing agent will not. Examples of afterload reduction include using continuous positive airway pressure to abolish the negative swings in ITP, narcotics as sympathetolitics, and pharmacologic vasodilators (e.g., nitroglycerine). Furthermore, most of the RV ...
cardiac rhythm interpretation
... d. Size and Time Intervals of EKG Waves. The size of the deflection waves and particular time intervals are important when you are reading an electrocardiogram. For example, the duration of a normal "P" wave is between 0.06 and 0.1 seconds, the time it takes for depolarization current to pass throu ...
... d. Size and Time Intervals of EKG Waves. The size of the deflection waves and particular time intervals are important when you are reading an electrocardiogram. For example, the duration of a normal "P" wave is between 0.06 and 0.1 seconds, the time it takes for depolarization current to pass throu ...
Why is intracardiac echocardiography helpful? Benefits, costs, and how to learn REVIEW Imaging
... the best visualization of the peri-membranous portion of the interventricular septum.2 In parallel to device closure procedures of IAC, all procedural steps should be simultaneously monitored by fluoroscopy and ICE (Figure 7). Intracardiac echocardiography, more appropriately called intraluminal pha ...
... the best visualization of the peri-membranous portion of the interventricular septum.2 In parallel to device closure procedures of IAC, all procedural steps should be simultaneously monitored by fluoroscopy and ICE (Figure 7). Intracardiac echocardiography, more appropriately called intraluminal pha ...
Severe Obstructive Sleep Apnea Is Associated With Left Ventricular
... Following confirmation of significant OSA by polysomnography, echocardiography (System FIVE; GE Vingmed; Horten, Norway) was performed to assess the LV size with systolic function assessed by fractional shortening obtained from Mmode recordings of LV systolic and diastolic dimensions,21 as well as b ...
... Following confirmation of significant OSA by polysomnography, echocardiography (System FIVE; GE Vingmed; Horten, Norway) was performed to assess the LV size with systolic function assessed by fractional shortening obtained from Mmode recordings of LV systolic and diastolic dimensions,21 as well as b ...
Utility of Right Ventricular Strain Imaging in Predicting Pulmonary
... it is an essential component of the evaluation of orthotopic heart transplant recipients.8 Currently, this information is obtained only via invasive cardiac catheterization. An accurate noninvasive measurement ...
... it is an essential component of the evaluation of orthotopic heart transplant recipients.8 Currently, this information is obtained only via invasive cardiac catheterization. An accurate noninvasive measurement ...
Pregnancy Complicated by Valvular Heart Disease: An Update
... and postpartum The cardiovascular system of women with valvular heart disease is limited in its ability to accommodate the demands of pregnancy. These limitations become more evident during labor and delivery, where several changes in the circulatory system could result in hemodynamic decompensation ...
... and postpartum The cardiovascular system of women with valvular heart disease is limited in its ability to accommodate the demands of pregnancy. These limitations become more evident during labor and delivery, where several changes in the circulatory system could result in hemodynamic decompensation ...
AHA/ACC Scientific Statement
... The American Heart Association and the American College of Cardiology make every effort to avoid any actual or potential conflicts of interest that may arise as a result of an outside relationship or a personal, professional, or business interest of a member of the writing panel. Specifically, all m ...
... The American Heart Association and the American College of Cardiology make every effort to avoid any actual or potential conflicts of interest that may arise as a result of an outside relationship or a personal, professional, or business interest of a member of the writing panel. Specifically, all m ...
Steven Shea, Li Pan, David A. Bluemke and João A.C. Lima Thor
... without signs or symptoms of heart failure have been directly linked to the eventual development of symptomatic congestive heart failure in clinical and epidemiologic studies.1,2 These structural and functional alterations of the left ventricle are currently considered as subclinical manifestations ...
... without signs or symptoms of heart failure have been directly linked to the eventual development of symptomatic congestive heart failure in clinical and epidemiologic studies.1,2 These structural and functional alterations of the left ventricle are currently considered as subclinical manifestations ...
“Double Density” of left atrial enlargement When the LA enlarges, it
... to the RA overlap each other where the indentation between the ascending aorta and right heart border meet ...
... to the RA overlap each other where the indentation between the ascending aorta and right heart border meet ...
Coronary Artery Atherosclerosis Is Related to Reduced Regional
... without signs or symptoms of heart failure have been directly linked to the eventual development of symptomatic congestive heart failure in clinical and epidemiologic studies.1,2 These structural and functional alterations of the left ventricle are currently considered as subclinical manifestations ...
... without signs or symptoms of heart failure have been directly linked to the eventual development of symptomatic congestive heart failure in clinical and epidemiologic studies.1,2 These structural and functional alterations of the left ventricle are currently considered as subclinical manifestations ...
Surgical Ventricular Reconstruction for Ischemic or Idiopathic
... This vulnerable period for developing an expansion has been demonstrated to begin as early as 24 hours after myocardial infarction and continues before scar formation is completed (72). Structural changes as a result of expansion may lead to the formation of a left ventricular aneurysm which has bee ...
... This vulnerable period for developing an expansion has been demonstrated to begin as early as 24 hours after myocardial infarction and continues before scar formation is completed (72). Structural changes as a result of expansion may lead to the formation of a left ventricular aneurysm which has bee ...
Translating Novel Imaging Technologies Into Clinical Applications
... space. As a result of redistribution and renal excretion, the blood concentration of gadolinium falls and the contrast is washed out from the extracellular space into the blood pool. In the normal myocardium, contrast concentration in the extracellular space equilibrates rapidly with the blood pool. ...
... space. As a result of redistribution and renal excretion, the blood concentration of gadolinium falls and the contrast is washed out from the extracellular space into the blood pool. In the normal myocardium, contrast concentration in the extracellular space equilibrates rapidly with the blood pool. ...
ESC Guidelines for the management of grown
... The content of these European Society of Cardiology (ESC) Guidelines has been published for personal and educational use only. No commercial use is authorized. No part of the ESC Guidelines may be translated or reproduced in any form without written permission from the ESC. Permission can be obtaine ...
... The content of these European Society of Cardiology (ESC) Guidelines has been published for personal and educational use only. No commercial use is authorized. No part of the ESC Guidelines may be translated or reproduced in any form without written permission from the ESC. Permission can be obtaine ...
Left Ventricular Mass in Normal Children and its
... to weight, height and body surface area (BSA) in children and to determine the sex differences. We evaluated 208 children (143 males and 65 females), aged 1 day to 14 years who had no cardiovascular disease. The end-diastolic left ventricular internal dimension (LVIDd), end-diastolic left ventricula ...
... to weight, height and body surface area (BSA) in children and to determine the sex differences. We evaluated 208 children (143 males and 65 females), aged 1 day to 14 years who had no cardiovascular disease. The end-diastolic left ventricular internal dimension (LVIDd), end-diastolic left ventricula ...
Assessment of Atrial Septal Defect Area Changes During Cardiac
... motion or respiration artifacts. In addition, the intraoperative defect area was calculated assuming an ellipsoidal shape, because it was difficult to measure directly. Therefore, in agreement with other studies 7,8）, we assumed most ASDs were ellipsoidal shape and we used only directly measured maj ...
... motion or respiration artifacts. In addition, the intraoperative defect area was calculated assuming an ellipsoidal shape, because it was difficult to measure directly. Therefore, in agreement with other studies 7,8）, we assumed most ASDs were ellipsoidal shape and we used only directly measured maj ...
Provocation of Ventricular Ectopy by Cheyne-Stokes
... between Cheyne-Stokes respiration with central sleep apnea (CSR-CSA) and ventricular ectopy, but there has been relatively little evidence of a cause-effect relationship. The objective of this study was to determine whether CSR-CSA directly provokes ventricular ectopy and, if so, whether it is assoc ...
... between Cheyne-Stokes respiration with central sleep apnea (CSR-CSA) and ventricular ectopy, but there has been relatively little evidence of a cause-effect relationship. The objective of this study was to determine whether CSR-CSA directly provokes ventricular ectopy and, if so, whether it is assoc ...
Document
... muscles were either conical, mamillated, flat topped, grooved, stepped, wavy, arched, sloped or saucerized (12). Victor et al classified the single papillary muscles according to the shape as conical, mammillated, flat topped, grooved, stepped, wavy, arched, sloped or saucerized (13). In our study ...
... muscles were either conical, mamillated, flat topped, grooved, stepped, wavy, arched, sloped or saucerized (12). Victor et al classified the single papillary muscles according to the shape as conical, mammillated, flat topped, grooved, stepped, wavy, arched, sloped or saucerized (13). In our study ...
Heart valve macro- and microstructure
... Each heart valve is composed of different structures of which each one has its own histological profile. Although the aortic and the pulmonary valves as well as the mitral and the tricuspid valves show similarities in their architecture, they are individually designed to ensure optimal function with ...
... Each heart valve is composed of different structures of which each one has its own histological profile. Although the aortic and the pulmonary valves as well as the mitral and the tricuspid valves show similarities in their architecture, they are individually designed to ensure optimal function with ...
His Bundle Electrocardiography
... dowl. the posterior fascicle and persistent block in the anterior fascicle. In addition, the initiating QRS complex of the bidirectional tachycardia followed a pause in the normal rhythm and demonstrated right bundle block and left anterior hemiblock over 80% of the time. These observations are cons ...
... dowl. the posterior fascicle and persistent block in the anterior fascicle. In addition, the initiating QRS complex of the bidirectional tachycardia followed a pause in the normal rhythm and demonstrated right bundle block and left anterior hemiblock over 80% of the time. These observations are cons ...
Intravenous magnesium for cardiac arrhythmias: jack of all trades
... Effects of intravenous magnesium on different types of cardiac arrhythmia Due to its unique but diverse electrophysiological effects, intravenous magnesium has been reported to be effective in the prevention and treatment of a variety of cardiac arrhythmias (table 1). Intravenous magnesium is useful ...
... Effects of intravenous magnesium on different types of cardiac arrhythmia Due to its unique but diverse electrophysiological effects, intravenous magnesium has been reported to be effective in the prevention and treatment of a variety of cardiac arrhythmias (table 1). Intravenous magnesium is useful ...
Electrophysiology Pacemaker Worksheet
... 3. Seen on the ECG monitor is an absence of pacemaker spikes even though the patient’s intrinsic rate is less than that of the pacemaker and a return of the underlying rhythm for which the pacemaker was implanted is known as a. Failure to pace b. Failure to sense c. Oversensing 4. Complications of t ...
... 3. Seen on the ECG monitor is an absence of pacemaker spikes even though the patient’s intrinsic rate is less than that of the pacemaker and a return of the underlying rhythm for which the pacemaker was implanted is known as a. Failure to pace b. Failure to sense c. Oversensing 4. Complications of t ...
School of Health Sciences - University of Nottingham
... Loss of a QRS on ECG represents loss of ventricular contraction and, therefore, loss of output from the heart. In this example, ventricular contraction is lost every 4th beat. This represents a potential 25% loss of output from the heart. Because this rhythm usually occurs following an inferior MI, ...
... Loss of a QRS on ECG represents loss of ventricular contraction and, therefore, loss of output from the heart. In this example, ventricular contraction is lost every 4th beat. This represents a potential 25% loss of output from the heart. Because this rhythm usually occurs following an inferior MI, ...
Hybrid management of a large atrial septal defect and a patent
... of the available surgical and interventional strategies. Because the mid-muscular VSD was small with a high likelihood of spontaneous closure, it was left untouched. This proved to be the right decision, since the defect did close spontaneously after a year of follow-up. On the other hand, there was ...
... of the available surgical and interventional strategies. Because the mid-muscular VSD was small with a high likelihood of spontaneous closure, it was left untouched. This proved to be the right decision, since the defect did close spontaneously after a year of follow-up. On the other hand, there was ...
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.