6 The Coronary System and Associated Medical Devices
... Myocardial protection is another procedure requiring device interaction with the coronary veins. During open heart surgery, the coronary sinus can be catheterized, and the coronary venous network is perfused retrograde with cardioplegia solution that helps to protect the heart from myocardial ischem ...
... Myocardial protection is another procedure requiring device interaction with the coronary veins. During open heart surgery, the coronary sinus can be catheterized, and the coronary venous network is perfused retrograde with cardioplegia solution that helps to protect the heart from myocardial ischem ...
4528-Review
... intervention. To develop therapeutic procedures and/or drugs aimed at modulating infarct size, it is very important not only to measure the MI size but also to know the extent of perfusion defect zone after coronary occlusion, which is also known as the area at risk (AAR) of myocardium[1]. Since the ...
... intervention. To develop therapeutic procedures and/or drugs aimed at modulating infarct size, it is very important not only to measure the MI size but also to know the extent of perfusion defect zone after coronary occlusion, which is also known as the area at risk (AAR) of myocardium[1]. Since the ...
Coronary Reserve
... • Metabolic mediator of resistance artery control • Released from cardiac myocytes when the rate of ATP hydrolysis exceeds its synthesis during ischemia • Increase with myocardial metabolism • Extremely short half-life (<10 seconds) - rapid inactivation by adenosine deaminase • A2 receptors on vascu ...
... • Metabolic mediator of resistance artery control • Released from cardiac myocytes when the rate of ATP hydrolysis exceeds its synthesis during ischemia • Increase with myocardial metabolism • Extremely short half-life (<10 seconds) - rapid inactivation by adenosine deaminase • A2 receptors on vascu ...
Obesity/Metabolic Syndrome
... of these relations (bottom), before (left) and after (right) normalizing LV volumes to 100-g body weight in SHRs and WKY rats. Bottom left, *P⬍0.005, SHR control vs other groups. Bottom right, *P⬍0.005 for an interaction between the presence of hypertension (SHR vs WKY) and diet category. ...
... of these relations (bottom), before (left) and after (right) normalizing LV volumes to 100-g body weight in SHRs and WKY rats. Bottom left, *P⬍0.005, SHR control vs other groups. Bottom right, *P⬍0.005 for an interaction between the presence of hypertension (SHR vs WKY) and diet category. ...
Noninvasive Evaluation of Myocardial Ischemia and Left
... The general aim of this thesis was, following the path of the ischemic cascade, to evaluate the feasibility of some new non-invasive techniques for the detection of myocardial ischemia, the extent of infarcted myocardium, and for the quantification of systolic left ventricular function. Reduced long ...
... The general aim of this thesis was, following the path of the ischemic cascade, to evaluate the feasibility of some new non-invasive techniques for the detection of myocardial ischemia, the extent of infarcted myocardium, and for the quantification of systolic left ventricular function. Reduced long ...
TACLS Chapter 2 - Canadian Stroke Best Practice Recommendations
... during sleep) • Taking birth control pills or hormone replacement therapy Lifestyle • Unhealthy diet • High salt intake • Being overweight or obese • Physical inactivity ...
... during sleep) • Taking birth control pills or hormone replacement therapy Lifestyle • Unhealthy diet • High salt intake • Being overweight or obese • Physical inactivity ...
For Personal Use. Copyright HMP 2014
... In this single-center, non-randomized, observational study, we analyzed the levophase angiograms of 100 patients undergoing routine coronary angiography in the right anterior oblique (RAO) view, and classified these observations on the basis of predetermined parameters; a working classification was ...
... In this single-center, non-randomized, observational study, we analyzed the levophase angiograms of 100 patients undergoing routine coronary angiography in the right anterior oblique (RAO) view, and classified these observations on the basis of predetermined parameters; a working classification was ...
coronary flow in a perfused rainbow trout heart
... presumably relates to the higher blood pressure and cardiac output found in, for example, tuna compared to the sea raven (Farrell & Driedzic, 1981; D. R. Jones, personal communication; Farrell, 1985). These relationships among fishes imply that the high cardiac work associated with high levels of ac ...
... presumably relates to the higher blood pressure and cardiac output found in, for example, tuna compared to the sea raven (Farrell & Driedzic, 1981; D. R. Jones, personal communication; Farrell, 1985). These relationships among fishes imply that the high cardiac work associated with high levels of ac ...
QTc interval and survival in 75-year
... Aims The study concerns the relationship of the corrected QT (QTc) interval to 6.4 years of survival and to measures of cardiac function, such as echocardiographic variables and plasma levels of brain natriuretic peptide (BNP), in 75-year-old people. Methods and results QTc was measured in a 12-lead ...
... Aims The study concerns the relationship of the corrected QT (QTc) interval to 6.4 years of survival and to measures of cardiac function, such as echocardiographic variables and plasma levels of brain natriuretic peptide (BNP), in 75-year-old people. Methods and results QTc was measured in a 12-lead ...
ANATOMIC VARIATIONS AND ANOMALIES OF THE CORONARY
... better identified consensually with multi– detector row CT. Although coronary artery anomalies are far less common than acquired coronary artery disease, their impact on premature cardiac morbidity and mortality among young adults is not trivial. In a study by Eckart et al [2] of 126 nontraumatic su ...
... better identified consensually with multi– detector row CT. Although coronary artery anomalies are far less common than acquired coronary artery disease, their impact on premature cardiac morbidity and mortality among young adults is not trivial. In a study by Eckart et al [2] of 126 nontraumatic su ...
Effects of increased pressure inside or outside ventricles - AJP
... Because the heart was quiescent and the vessels were maximally dilated, increases in preloads decreased flows, often markedly. For fixed resistances, the upstream and downstream pressures will vary with flows, so we determined what would happen to arterial and venous pressures with changes in preloa ...
... Because the heart was quiescent and the vessels were maximally dilated, increases in preloads decreased flows, often markedly. For fixed resistances, the upstream and downstream pressures will vary with flows, so we determined what would happen to arterial and venous pressures with changes in preloa ...
Translational models of coronary artery disease, myocardial
... prolonged period of myocardial ischaemia leads to myocardial necrosis. Necrotic myocardium is replaced with scar tissue. Myocardial infarction results in various changes in cardiac structure and function over time that results in “adverse remodelling”. This remodelling may result in a progressive wo ...
... prolonged period of myocardial ischaemia leads to myocardial necrosis. Necrotic myocardium is replaced with scar tissue. Myocardial infarction results in various changes in cardiac structure and function over time that results in “adverse remodelling”. This remodelling may result in a progressive wo ...
Heart Rate Variability for Clinicians
... Intrinsic Periodic Rhythms Respiratory sinus arrhythmia Baroreceptor reflex regulation ...
... Intrinsic Periodic Rhythms Respiratory sinus arrhythmia Baroreceptor reflex regulation ...
Coronary Artery Manifestations of€Fibromuscular Dysplasia
... (e.g., coronary endothelial dysfunction, coronary artery spasm, coronary embolism, tachyarrhythmias/ bradyarrhythmias, anemia, respiratory failure, and hypotension). Recent data indicate that in the mostly female population presenting with SCAD and type ...
... (e.g., coronary endothelial dysfunction, coronary artery spasm, coronary embolism, tachyarrhythmias/ bradyarrhythmias, anemia, respiratory failure, and hypotension). Recent data indicate that in the mostly female population presenting with SCAD and type ...
Effect of adenosine on heart rate variability in
... heart rate modulation by the sympathetic nervous system. Because diastolic blood pressure did not fall significantly, arterial baroreflex unloading [23] is probably less important than the stimulation of adenosine-receptor sympathetic neural afferents in mediating these sympathoneural responses. In ...
... heart rate modulation by the sympathetic nervous system. Because diastolic blood pressure did not fall significantly, arterial baroreflex unloading [23] is probably less important than the stimulation of adenosine-receptor sympathetic neural afferents in mediating these sympathoneural responses. In ...
The Cardiovascular System: The Heart
... The ancient Greeks believed the heart was the seat of intelligence. Others thought it was the source of emotions. While these theories have proved false, we do know that emotions affect heart rate. When your heart pounds or occasionally skips a beat, you become acutely aware of how much you depend o ...
... The ancient Greeks believed the heart was the seat of intelligence. Others thought it was the source of emotions. While these theories have proved false, we do know that emotions affect heart rate. When your heart pounds or occasionally skips a beat, you become acutely aware of how much you depend o ...
Myocardial structure, function and ischaemic tolerance in a rodent
... potential to normalise myocardial tolerance to ischaemia/reperfusion in patients with the metabolic syndrome. ...
... potential to normalise myocardial tolerance to ischaemia/reperfusion in patients with the metabolic syndrome. ...
Coronary Sinus-Still a Potential Site for Research
... demonstrated a low incidence of major adverse events out to 30 days and no events were deemed to be device-related by independent safety and monitoring boards. There was clinical benefit in each trial, with a consistent 1-grade improvement in NYHA class and approximately 100 m 6 MWT increase seen in ...
... demonstrated a low incidence of major adverse events out to 30 days and no events were deemed to be device-related by independent safety and monitoring boards. There was clinical benefit in each trial, with a consistent 1-grade improvement in NYHA class and approximately 100 m 6 MWT increase seen in ...
right coronary artery in cercopithecus aethiops sabeus
... coronary arteries were predominantly epicardially located, with partial intramural segments, as found in sheep, dogs and cats; coronary arteries in type C of circulation, occupied the epicardial (epimural) position exclusively, as described in big mammals as horses and cows. Other authors could not ...
... coronary arteries were predominantly epicardially located, with partial intramural segments, as found in sheep, dogs and cats; coronary arteries in type C of circulation, occupied the epicardial (epimural) position exclusively, as described in big mammals as horses and cows. Other authors could not ...
the extracardiac anastomoses of the coronary arteries
... mediastinal arteries. Their importance was indicated by the fact that even when the parietal pericardium was cut away from the aorta, pulmonary artery and both venae cavae, an extensive mediastinal injection was obtained through these perivenous coronary anastomoses, while only a scant extracardiac ...
... mediastinal arteries. Their importance was indicated by the fact that even when the parietal pericardium was cut away from the aorta, pulmonary artery and both venae cavae, an extensive mediastinal injection was obtained through these perivenous coronary anastomoses, while only a scant extracardiac ...
2013 ESC guidelines on the management of stable coronary artery
... 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 ...
Developing computational methods for three
... acting on the coronary vessels throughout the cardiac cycle. Most previous studies on coronary flow and pressure using three-dimensional finite element simulations ignored the intramyocardial pressure, and prescribed, not predicted, coronary flow. Further, these studies generally used traction-free out ...
... acting on the coronary vessels throughout the cardiac cycle. Most previous studies on coronary flow and pressure using three-dimensional finite element simulations ignored the intramyocardial pressure, and prescribed, not predicted, coronary flow. Further, these studies generally used traction-free out ...
2013 ESC guidelines on the management of stable coronary artery
... 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 ...
2013 ESC guidelines on the management of stable
... 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 ...
Cardiovascular disease
Cardiovascular disease (CVD) is a class of diseases that involve the heart or blood vessels. Cardiovascular disease includes coronary artery diseases (CAD) such as angina and myocardial infarction (commonly known as a heart attack). Other CVDs are stroke, hypertensive heart disease, rheumatic heart disease, cardiomyopathy, atrial fibrillation, congenital heart disease, endocarditis, aortic aneurysms, peripheral artery disease and venous thrombosis.The underlying mechanisms vary depending on the disease in question. Coronary artery disease, stroke, and peripheral artery disease involve atherosclerosis. This may be caused by high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol consumption, among others. High blood pressure results in 13% of CVD deaths, while tobacco results in 9%, diabetes 6%, lack of exercise 6% and obesity 5%. Rheumatic heart disease may follow untreated strep throat.It is estimated that 90% of CVD is preventable. Prevention of atherosclerosis is by decreasing risk factors through: healthy eating, exercise, avoidance of tobacco smoke and limiting alcohol intake. Treating high blood pressure and diabetes is also beneficial. Treating people who have strep throat with antibiotics can decrease the risk of rheumatic heart disease. The effect of the use of aspirin in people who are otherwise healthy is of unclear benefit. The United States Preventive Services Task Force recommends against its use for prevention in women less than 55 and men less than 45 years old; however, in those who are older it is recommends in some individuals. Treatment of those who have CVD improves outcomes.Cardiovascular diseases are the leading cause of death globally. This is true in all areas of the world except Africa. Together they resulted in 17.3 million deaths (31.5%) in 2013 up from 12.3 million (25.8%) in 1990. Deaths, at a given age, from CVD are more common and have been increasing in much of the developing world, while rates have declined in most of the developed world since the 1970s. Coronary artery disease and stroke account for 80% of CVD deaths in males and 75% of CVD deaths in females. Most cardiovascular disease affects older adults. In the United States 11% of people between 20 and 40 have CVD, while 37% between 40 and 60, 71% of people between 60 and 80, and 85% of people over 80 have CVD. The average age of death from coronary artery disease in the developed world is around 80 while it is around 68 in the developing world. Disease onset is typically seven to ten years earlier in men as compared to women.