3 Ventricular Function
... by the sodium pump lag mechanism to give rise to an increased cytosolic calcium, giving the increased force of contraction of the Bowditch or treppe phenomenon. An increased preload involves increased fiber stretch, which in turn causes length activation, thought to be explicable in part by sensitiz ...
... by the sodium pump lag mechanism to give rise to an increased cytosolic calcium, giving the increased force of contraction of the Bowditch or treppe phenomenon. An increased preload involves increased fiber stretch, which in turn causes length activation, thought to be explicable in part by sensitiz ...
influence of the size of aortic valve prostheses on
... mostly of patients with systemic arterial hypertension, have confirmed the adverse influence of L V H on life expectancy 9' 10; among patients with aortic valve prostheses implanted to redress aortic stenosis, those with echocardiographically detected L V H have a significantly higher postoperative ...
... mostly of patients with systemic arterial hypertension, have confirmed the adverse influence of L V H on life expectancy 9' 10; among patients with aortic valve prostheses implanted to redress aortic stenosis, those with echocardiographically detected L V H have a significantly higher postoperative ...
Practical stepwise approach to rhythm disturbances in congenital
... most likely occur at an advanced age. The prevalence of late-onset atrial flutter or atrial fibrillation in atrial septal defect (ASD) increases progressively with aging, more so in patients who underwent surgery after 11 years of age and patients over the age of 402-4). Rhythm disturbances in ASD h ...
... most likely occur at an advanced age. The prevalence of late-onset atrial flutter or atrial fibrillation in atrial septal defect (ASD) increases progressively with aging, more so in patients who underwent surgery after 11 years of age and patients over the age of 402-4). Rhythm disturbances in ASD h ...
ECG Assignment
... blood enter the ventricle are open for only a very short time, therefore the ventricle cant get a large enough preload to generate a forceful contraction. All these things mean that you are more likely to suffer a heart attack. Other items also occur and may be in your answer, these are just a few. ...
... blood enter the ventricle are open for only a very short time, therefore the ventricle cant get a large enough preload to generate a forceful contraction. All these things mean that you are more likely to suffer a heart attack. Other items also occur and may be in your answer, these are just a few. ...
A Systemic Mock Circulation for In-Vitro Testing of a Pneumatically
... Two processes occurring in parallel define the circulation behaviour during the diastole. The first phenomenon is the delivery of liquid stored in the systemic compliance to the periphery. Released liquid is collected in the peripheral compliance per_C having the peripheral inductance per_L(C), whil ...
... Two processes occurring in parallel define the circulation behaviour during the diastole. The first phenomenon is the delivery of liquid stored in the systemic compliance to the periphery. Released liquid is collected in the peripheral compliance per_C having the peripheral inductance per_L(C), whil ...
Biventricular Takotsubo Cardiomyopathy
... LV and hyperkinesis of the basal LV extending over more than one coronary artery region.8-11 Since then, this asynergy has been called takotsubo cardiomyopathy (TC), stress cardiomyopathy, ampulla syndrome, broken-heart syndrome, and neurogenic stunned myocardium.12-14 Takotsubo cardiomyopathy prese ...
... LV and hyperkinesis of the basal LV extending over more than one coronary artery region.8-11 Since then, this asynergy has been called takotsubo cardiomyopathy (TC), stress cardiomyopathy, ampulla syndrome, broken-heart syndrome, and neurogenic stunned myocardium.12-14 Takotsubo cardiomyopathy prese ...
The Non Invasive Assessment of Risk of Sudden Death
... (67). The SAECG may be used in conjunction with other information to determine which post MI patients may benefit from invasive evaluation, and may be used together with invasive evaluation to determine which post MI patients are at the highest risk for sudden death. We routinely obtain SAECGs in C ...
... (67). The SAECG may be used in conjunction with other information to determine which post MI patients may benefit from invasive evaluation, and may be used together with invasive evaluation to determine which post MI patients are at the highest risk for sudden death. We routinely obtain SAECGs in C ...
Advanced Systolic Function - Society of Cardiovascular
... global left ventricular ejection fraction can be estimated based on the presence of akinetic or dyskinetic regions outside of the imaging plane. For example, global left ventricular ejection fraction estimated from the transgastric mid-ventricular short axis image should be decreased by approximatel ...
... global left ventricular ejection fraction can be estimated based on the presence of akinetic or dyskinetic regions outside of the imaging plane. For example, global left ventricular ejection fraction estimated from the transgastric mid-ventricular short axis image should be decreased by approximatel ...
echocardiography in cardiac surgery
... the structure and function of the mitral annulus, leaflets, chordae, papillary muscles, LV size and function, LA size, and pulmonary hypertension (RVSP). The Wilkins echo score15 for rheumatic MS is based on four variables (leaflet mobility, leaflet thickening, subvalvular thickening, and calcificat ...
... the structure and function of the mitral annulus, leaflets, chordae, papillary muscles, LV size and function, LA size, and pulmonary hypertension (RVSP). The Wilkins echo score15 for rheumatic MS is based on four variables (leaflet mobility, leaflet thickening, subvalvular thickening, and calcificat ...
ТАШКЕНТСКАЯ МЕДИЦИНСКАЯ АКАДЕМИЯ
... Beats are definitely the most common heart rhythm disturbance. They are often recorded in healthy individuals. In carrying out daily monitoring of ECG statistical "norm" is about extrasystoles supraventricular premature beats to 200 and 200 ventricular extrasystoles per day. Beats can be single or i ...
... Beats are definitely the most common heart rhythm disturbance. They are often recorded in healthy individuals. In carrying out daily monitoring of ECG statistical "norm" is about extrasystoles supraventricular premature beats to 200 and 200 ventricular extrasystoles per day. Beats can be single or i ...
Auscultation of the Heart I - University of Edinburgh Open Journals
... sounds? Is it systolic or diastolic? If systolic does it occur in early, mid or late systole or is it pan-systolic? If diastolic is it early. i.e. immediately following the second heart sound, or mid, i.e. after an appreciable gap from the second sound. or late .. i.e. pre-systolic? As will become c ...
... sounds? Is it systolic or diastolic? If systolic does it occur in early, mid or late systole or is it pan-systolic? If diastolic is it early. i.e. immediately following the second heart sound, or mid, i.e. after an appreciable gap from the second sound. or late .. i.e. pre-systolic? As will become c ...
Fulltext: english,
... determinants of cardiac output are preload, contractility, afterload and heart rate. (1) Changes in cardiac output are the result of an increase in intrathoracic pressure, which causes a decrease in preload and afterload. (1,6) In cases where the cardiac output is dependent on venous return (hypovol ...
... determinants of cardiac output are preload, contractility, afterload and heart rate. (1) Changes in cardiac output are the result of an increase in intrathoracic pressure, which causes a decrease in preload and afterload. (1,6) In cases where the cardiac output is dependent on venous return (hypovol ...
Cardiopulmonary Physiology
... performance curve to shift to the right. As a result there will be a new equilibrium point and the final result is increased cardiac output, increased venous pressure and increased mean circulatory pressure. Increased vascular volume is also called hypervolemia. A decrease in blood volume, hypovolem ...
... performance curve to shift to the right. As a result there will be a new equilibrium point and the final result is increased cardiac output, increased venous pressure and increased mean circulatory pressure. Increased vascular volume is also called hypervolemia. A decrease in blood volume, hypovolem ...
Quantification of left ventricular function and mass in heart transplant
... parameters, slices from the base of the heart to the apex were analyzed. The base of the left ventricle was defined as the most basal slice surrounded by at least 50% myocardium in all cardiac phases [20] and the apex as the last slice with a visible lumen along the entire cardiac cycle. In each pat ...
... parameters, slices from the base of the heart to the apex were analyzed. The base of the left ventricle was defined as the most basal slice surrounded by at least 50% myocardium in all cardiac phases [20] and the apex as the last slice with a visible lumen along the entire cardiac cycle. In each pat ...
Heart rate variability / QT
... with electrical instability. Twenty-four hour acquisition of QTd from the Hoiter and the clrcadian variation of QTd were evaluated In 21 survivors of sudden cardiac death (SCD) (9F/12M, age =. 53 ± 12 y) and 21 healthy subjects (H) (10F/11M, age = 57 ± 13 y) Computer-assisted QT measurement was perf ...
... with electrical instability. Twenty-four hour acquisition of QTd from the Hoiter and the clrcadian variation of QTd were evaluated In 21 survivors of sudden cardiac death (SCD) (9F/12M, age =. 53 ± 12 y) and 21 healthy subjects (H) (10F/11M, age = 57 ± 13 y) Computer-assisted QT measurement was perf ...
Non-coronary sinus of Valsalva aneurysm diagnosed after a road
... and the ascending aorta and more extensive portions of the aortic root.2 In most cases, sinus of Valsalva aneurysms are diagnosed by transthoracic echocardiography because it enables the aortic root to be seen clearly. Doppler colour flow echocardiography is the best technique for the detection of c ...
... and the ascending aorta and more extensive portions of the aortic root.2 In most cases, sinus of Valsalva aneurysms are diagnosed by transthoracic echocardiography because it enables the aortic root to be seen clearly. Doppler colour flow echocardiography is the best technique for the detection of c ...
Mitral valve repair for heart failure
... What happens to the failing heart with MR? 1. Disease induces apical and lateral displacement of one or both papillary muscles. 2. Resultant pull on chordae and leaflets prevents their proper closure and causes mitral regurgitation. 3. This increases LV preload, volume and wall tension. 4. To compen ...
... What happens to the failing heart with MR? 1. Disease induces apical and lateral displacement of one or both papillary muscles. 2. Resultant pull on chordae and leaflets prevents their proper closure and causes mitral regurgitation. 3. This increases LV preload, volume and wall tension. 4. To compen ...
Author`s contributions - Journal of Cardiothoracic Surgery
... hindrance. Spontaneous recovery of rhythm occurred in all patients, and there was only one case of low cardiac output syndrome which required the intraoperative insertion of an IABP. Part of these positive outcomes may be attributed to the fact that the anterior wall of the LV is continuously perfus ...
... hindrance. Spontaneous recovery of rhythm occurred in all patients, and there was only one case of low cardiac output syndrome which required the intraoperative insertion of an IABP. Part of these positive outcomes may be attributed to the fact that the anterior wall of the LV is continuously perfus ...
lecture outline: the heart
... Continuous with anterior interventricular sulcus near apex Coronary sulcus Separates ventricles from atria; Contains coronary vessels and variable fat Coronary sinus Expanded vein in part of sulcus below left atrium Collects blood from cardiac veins. Empties into right atrium Great vessels: SVC & IV ...
... Continuous with anterior interventricular sulcus near apex Coronary sulcus Separates ventricles from atria; Contains coronary vessels and variable fat Coronary sinus Expanded vein in part of sulcus below left atrium Collects blood from cardiac veins. Empties into right atrium Great vessels: SVC & IV ...
Corporate Medical Policy External Defibrillators
... sudden cardiac death (history of premature HCM-related sudden death in 1 or more first-degree relatives younger than 50 years; left ventricular hypertrophy greater than 30 mm; 1 or more runs of nonsustained ventricular tachycardia at heart rates of 120 beats per minute or greater on 24-hour Holter m ...
... sudden cardiac death (history of premature HCM-related sudden death in 1 or more first-degree relatives younger than 50 years; left ventricular hypertrophy greater than 30 mm; 1 or more runs of nonsustained ventricular tachycardia at heart rates of 120 beats per minute or greater on 24-hour Holter m ...
Systemic Blood Pressure Response to Changes in Right Ventricular
... nerve endings which were seen are similar to sensory receptors in other areas of the body. Electroneurograms of the vagus nerves also have shown bursts of impulse activity with each ventricular systole.2'13 ...
... nerve endings which were seen are similar to sensory receptors in other areas of the body. Electroneurograms of the vagus nerves also have shown bursts of impulse activity with each ventricular systole.2'13 ...
Chest X-ray
... • Pericardial effusions may be associated with pain if they occur as part of an acute inflammatory process or may be painless, as is often the case with neoplastic or uremic effusion. • Dyspnea and cough are common, especially with tamponade. • Other symptoms may result from the primary disease. ...
... • Pericardial effusions may be associated with pain if they occur as part of an acute inflammatory process or may be painless, as is often the case with neoplastic or uremic effusion. • Dyspnea and cough are common, especially with tamponade. • Other symptoms may result from the primary disease. ...
Dilated cardiomyopathy after electrical injury: report of two cases
... the hospital because of progressive shortness of breath, chest pain, palpitations, and epigastric pain. At that time, the patient was afebrile; respirations were 20/min, and blood pressure, 140/110 mm Hg. An ECG revealed sinus tachycardia (101 beats per minute) with ST and T wave abnormalities sugge ...
... the hospital because of progressive shortness of breath, chest pain, palpitations, and epigastric pain. At that time, the patient was afebrile; respirations were 20/min, and blood pressure, 140/110 mm Hg. An ECG revealed sinus tachycardia (101 beats per minute) with ST and T wave abnormalities sugge ...
AHA Scientific Statement - CAMP-TUM
... For regional analysis of left ventricular function or myocardial perfusion, the left ventricle should be divided into equal thirds perpendicular to the long axis of the heart. This will generate 3 circular basal, mid-cavity, and apical short-axis slices of the left ventricle. For echocardiography, a ...
... For regional analysis of left ventricular function or myocardial perfusion, the left ventricle should be divided into equal thirds perpendicular to the long axis of the heart. This will generate 3 circular basal, mid-cavity, and apical short-axis slices of the left ventricle. For echocardiography, a ...
(AV) Block
... – Atrial rate is faster than Ventricular rate – Usually a wide QRS as ventricular rate is idioventricular (distal block) or narrow QRS if AV is pacemaker (proximal ...
... – Atrial rate is faster than Ventricular rate – Usually a wide QRS as ventricular rate is idioventricular (distal block) or narrow QRS if AV is pacemaker (proximal ...
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.