Bundle-branch block in the setting ofacute - Heart
... SUMMARY The anatomical substrate of bundle-branch block in the setting of acute anteroseptal infarction is as yet controversial. Some investigators have reported massive bundle-branch necrosis, while others have indicated that necrosis does not play a major role. The present study has correlated ele ...
... SUMMARY The anatomical substrate of bundle-branch block in the setting of acute anteroseptal infarction is as yet controversial. Some investigators have reported massive bundle-branch necrosis, while others have indicated that necrosis does not play a major role. The present study has correlated ele ...
Cardiac Auscultation The Ohio State University
... closure of the aortic and pulmonic valves. These sounds may be abnormal in certain conditions. For example, pericardial disease, pleural effusion, or myocardial failure from dilated cardiomyopathy can decrease the intensity of the first heart sound. Arrhythmias typically lead to variable intensity h ...
... closure of the aortic and pulmonic valves. These sounds may be abnormal in certain conditions. For example, pericardial disease, pleural effusion, or myocardial failure from dilated cardiomyopathy can decrease the intensity of the first heart sound. Arrhythmias typically lead to variable intensity h ...
Atrial Septal Defect Guideline
... o May be wide fixed splitting of S2 heart sound o May be a mid-diastolic murmur at the lower left sternal border Diagnostic studies o Required for both surgical and device closure o Delineate size, location, surrounding tissue, PVR, and direction of pulmonary/systemic shunt (QP:QS) if present Di ...
... o May be wide fixed splitting of S2 heart sound o May be a mid-diastolic murmur at the lower left sternal border Diagnostic studies o Required for both surgical and device closure o Delineate size, location, surrounding tissue, PVR, and direction of pulmonary/systemic shunt (QP:QS) if present Di ...
Diagnosis and Management of Diastolic Dysfunction and Heart Failure
... hree million Americans have congestive heart failure (CHF), and 500,000 new cases are diagnosed each year. The condition is the most common discharge diagnosis for patients older than 65 years1 and is the most expensive disease for Medicare.2 Systolic and diastolic dysfunction can cause CHF.3 All pa ...
... hree million Americans have congestive heart failure (CHF), and 500,000 new cases are diagnosed each year. The condition is the most common discharge diagnosis for patients older than 65 years1 and is the most expensive disease for Medicare.2 Systolic and diastolic dysfunction can cause CHF.3 All pa ...
EVENTS (PROGRAM 80812) - Texas Tech University Health
... without significant compromise because what will happen is your heart rate starts to run. So your heart is just beating and beating and beating and beating. Your cardiac output is falling and falling and falling and falling and your myocardial demand is increasing and increasing and increasing, so w ...
... without significant compromise because what will happen is your heart rate starts to run. So your heart is just beating and beating and beating and beating. Your cardiac output is falling and falling and falling and falling and your myocardial demand is increasing and increasing and increasing, so w ...
0474 ch 14(281-305).
... the chambers by a heart muscle contraction that begins in the thin-walled upper chambers, the atria, and is followed by a contraction of the thick muscle of the lower chambers, the ventricles. This active phase is called systole (SIS-tole), and in each case, it is followed by a resting period known ...
... the chambers by a heart muscle contraction that begins in the thin-walled upper chambers, the atria, and is followed by a contraction of the thick muscle of the lower chambers, the ventricles. This active phase is called systole (SIS-tole), and in each case, it is followed by a resting period known ...
Disordered Myocardial Ca2+ Homeostasis Results
... conditions that modify both Ca2+ handling and ion channel function (e.g. drugs, oxidative stress). Despite progressive current therapies both VF and AF remains a major health problem. Further understanding of the mechanisms and factors responsible for the onset and maintenance of these arrhythmias i ...
... conditions that modify both Ca2+ handling and ion channel function (e.g. drugs, oxidative stress). Despite progressive current therapies both VF and AF remains a major health problem. Further understanding of the mechanisms and factors responsible for the onset and maintenance of these arrhythmias i ...
The Heart: Part One
... The heart is two side-by-side pumps Right side = pulmonary circuit Vessels that carry blood to and from the lungs ...
... The heart is two side-by-side pumps Right side = pulmonary circuit Vessels that carry blood to and from the lungs ...
The Violin Heart
... Left ventricular myocardial bands—also called false tendons—are anomalous fibromuscular structures which traverse the left ventricular cavity.1 They originate in the interventricular septum and stretch across the left ventricular cavity, implanting in either the lateral wall or a papillary muscle.2 ...
... Left ventricular myocardial bands—also called false tendons—are anomalous fibromuscular structures which traverse the left ventricular cavity.1 They originate in the interventricular septum and stretch across the left ventricular cavity, implanting in either the lateral wall or a papillary muscle.2 ...
Presentation and evaluation of gated-SPECT
... A medical field in which radioactive isotope is used to diagnose or treat a disease is called nuclear medicine. One application is, where radioactive substances that are also called radiopharmaceuticals which are taken orally or intravenously, can be traced by external detectors like gamma cameras a ...
... A medical field in which radioactive isotope is used to diagnose or treat a disease is called nuclear medicine. One application is, where radioactive substances that are also called radiopharmaceuticals which are taken orally or intravenously, can be traced by external detectors like gamma cameras a ...
Filtering Poincaré plots - CMST | Computational Methods in Science
... involving data analysis enormously (see for example [7]), as will be clear from the examples. Very often only a line or two of code are required to solve a complex problem. Appendix A gives some basic information on the part of the matrix language used in the present paper. Appendix B describes the ...
... involving data analysis enormously (see for example [7]), as will be clear from the examples. Very often only a line or two of code are required to solve a complex problem. Appendix A gives some basic information on the part of the matrix language used in the present paper. Appendix B describes the ...
Heart - Dr Magrann
... signal is transmitted to both ventricles (atria are now relaxing) sends the action potential to all parts of the ventricles so they can contract. ...
... signal is transmitted to both ventricles (atria are now relaxing) sends the action potential to all parts of the ventricles so they can contract. ...
induction of a chronic myocardial infarction
... countries. Appropriate animal experimental models of chronic myocardial infarction is an essential first step in order to investigate and develop new therapeutic interventions. .Aim. The aim of this study was to find an optimal place for a coronary artery ligation to induce an optimal chronic myocardi ...
... countries. Appropriate animal experimental models of chronic myocardial infarction is an essential first step in order to investigate and develop new therapeutic interventions. .Aim. The aim of this study was to find an optimal place for a coronary artery ligation to induce an optimal chronic myocardi ...
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... The term acute means of sudden or recent onset. While there is no precise time period defined, in common practice acute means that the patient stops his or her usual activity to seek medical attention, typically within minutes to hours. Some studies of acute chest pain patients in the ED limit entry ...
... The term acute means of sudden or recent onset. While there is no precise time period defined, in common practice acute means that the patient stops his or her usual activity to seek medical attention, typically within minutes to hours. Some studies of acute chest pain patients in the ED limit entry ...
Chronic Total Occlusion of Left Main Coronary Artery
... patients with acute or subacute occlusion of the LMCA have a high mortality and survival depends on the size and dominance of the RCA and the formation of collateral supply to the left coronary system.4,8,9 The degree of collateral circulation likely influences the symptoms experienced by patient. I ...
... patients with acute or subacute occlusion of the LMCA have a high mortality and survival depends on the size and dominance of the RCA and the formation of collateral supply to the left coronary system.4,8,9 The degree of collateral circulation likely influences the symptoms experienced by patient. I ...
Cardiovascular Anatomy and Physiology
... The cardiac output is the volume of blood that is ejected from the left ventricle into the aorta over a given time period (L/min). At rest cardiac output is 4-8 L/min in an healthy adult. This can rise up to 25 litres/min during severe exercise. ...
... The cardiac output is the volume of blood that is ejected from the left ventricle into the aorta over a given time period (L/min). At rest cardiac output is 4-8 L/min in an healthy adult. This can rise up to 25 litres/min during severe exercise. ...
Morphologic demonstration of spontaneous and
... closed at age 5 years. At age 31 years, he was found to have severe mitral regurgitation and underwent mitral valve replacement with inadvertent left circumflex coronary artery injury, resulting in one-vessel coronary artery bypass grafting. He developed heart failure symptoms at age 47 and underwent ...
... closed at age 5 years. At age 31 years, he was found to have severe mitral regurgitation and underwent mitral valve replacement with inadvertent left circumflex coronary artery injury, resulting in one-vessel coronary artery bypass grafting. He developed heart failure symptoms at age 47 and underwent ...
Physiological Adaptation of the Cardiovascular System
... modeled to be determined by the matching of convective and diffusional oxygen transport systems at a lower maximal cardiac output. However, there has been recent suggestion that 10% to 25% of the loss in aerobic exercise capacity at high altitudes can be restored by specific pulmonary vasodilating i ...
... modeled to be determined by the matching of convective and diffusional oxygen transport systems at a lower maximal cardiac output. However, there has been recent suggestion that 10% to 25% of the loss in aerobic exercise capacity at high altitudes can be restored by specific pulmonary vasodilating i ...
Living With Your CRT-D
... the SA node for a fraction of a second before releasing it into the ventricle. The result is that the atrium beats first, pushing blood into the ventricle, and then the ventricle beats after it has been filled with the blood from the atrium. Figure 3 shows the location of the AV node. ...
... the SA node for a fraction of a second before releasing it into the ventricle. The result is that the atrium beats first, pushing blood into the ventricle, and then the ventricle beats after it has been filled with the blood from the atrium. Figure 3 shows the location of the AV node. ...
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 ...
ATPase may play a critical role in disturbance of energy metabolism
... increase of respiratory rate. Hu et al. [18] examined whether decreases of high-energy phosphates and mitochondrial F (1) F (0)-ATPase subunits typical of failing myocardium exist in border zone myocardium of compensated postinfarct remodeled hearts. They found that energetic insufficiency in the pe ...
... increase of respiratory rate. Hu et al. [18] examined whether decreases of high-energy phosphates and mitochondrial F (1) F (0)-ATPase subunits typical of failing myocardium exist in border zone myocardium of compensated postinfarct remodeled hearts. They found that energetic insufficiency in the pe ...
Role of miRNAs in cardiac fibrosis
... these promising therapies can be safely and successfully applied in patients. miRs have a broad spectrum of mRNA target and it is likely that modulation of a single miR lead to unintended adverse effects and pathological consequences through regulation of other, sometimes unknown mRNAs. Secondly, th ...
... these promising therapies can be safely and successfully applied in patients. miRs have a broad spectrum of mRNA target and it is likely that modulation of a single miR lead to unintended adverse effects and pathological consequences through regulation of other, sometimes unknown mRNAs. Secondly, th ...
Changes of natriuretic peptides concentration in early phase of
... INTRODUCTION Many changes of diagnostic tools and the treatment of myocardial infarction have been seen in last two decades. Invasive procedures, like stent implementation, were developed as a very successful early treatment of myocardial infarction (1). Mortality of myocardial infarction was decrea ...
... INTRODUCTION Many changes of diagnostic tools and the treatment of myocardial infarction have been seen in last two decades. Invasive procedures, like stent implementation, were developed as a very successful early treatment of myocardial infarction (1). Mortality of myocardial infarction was decrea ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.