The Heart
... • Semilunar valves open as blood pushes against them • Blood travels out of the ventricles through pulmonary trunk and aorta • Atria are relaxed ...
... • Semilunar valves open as blood pushes against them • Blood travels out of the ventricles through pulmonary trunk and aorta • Atria are relaxed ...
Cardiac Development
... dramatically in length (four- to fivefold), and this process displaces atrial myocardium posteriorly and superiorly dorsal to the forming ventricular chambers (5,8,15). During the looping process, the inflow (venous) pole, atria, and atrioventricular region are added to, or accreted from, the poster ...
... dramatically in length (four- to fivefold), and this process displaces atrial myocardium posteriorly and superiorly dorsal to the forming ventricular chambers (5,8,15). During the looping process, the inflow (venous) pole, atria, and atrioventricular region are added to, or accreted from, the poster ...
Idiopathic hypertrophic subaortic stenosis
... apical systolic murmur which occurs in either early, mid, or late systole (Shelburne, Rubinstein, and Gorlin, I969). The mitral regurgitation present in this abnormality is due to interference with the normal function of the supporting structures of the mitral valve, rather than to an abnormality of ...
... apical systolic murmur which occurs in either early, mid, or late systole (Shelburne, Rubinstein, and Gorlin, I969). The mitral regurgitation present in this abnormality is due to interference with the normal function of the supporting structures of the mitral valve, rather than to an abnormality of ...
Female athlete's heart: Systolic and diastolic function related to circulatory dimensions
... abstinence. All participants underwent a maximal upright bicycle cardiopulmonary exercise test including a 6-min steady state workload of 100 W followed by a continuous increment in workload of 10 W each minute until exhaustion, using an electrically braked bicycle ergometer (eBike Basic, GE Medical ...
... abstinence. All participants underwent a maximal upright bicycle cardiopulmonary exercise test including a 6-min steady state workload of 100 W followed by a continuous increment in workload of 10 W each minute until exhaustion, using an electrically braked bicycle ergometer (eBike Basic, GE Medical ...
Understanding your child`s heart Large ventricular septal defect
... in the middle of the chest along the breast bone. For some older children with a VSD, it may be possible to close the VSD with keyhole treatment, but only a small number of cases are suitable for this. If your child is suitable for keyhole treatment, your cardiologist will discuss this with you. Wha ...
... in the middle of the chest along the breast bone. For some older children with a VSD, it may be possible to close the VSD with keyhole treatment, but only a small number of cases are suitable for this. If your child is suitable for keyhole treatment, your cardiologist will discuss this with you. Wha ...
ECG Identification of Scar-Related Ventricular Tachycardia With a
... ventricular arrhythmias (VA). Discrimination between idiopathic and scar-related LBBB pattern VA has important clinical implications. We hypothesized that the VA QRS morphology is influenced by the presence of ventricular scar, allowing ECG discrimination of VA arising from structurally normal versu ...
... ventricular arrhythmias (VA). Discrimination between idiopathic and scar-related LBBB pattern VA has important clinical implications. We hypothesized that the VA QRS morphology is influenced by the presence of ventricular scar, allowing ECG discrimination of VA arising from structurally normal versu ...
Formation of the Ventricles
... Knockout studies in mice have shown that several cardiac transcription factors are essential for appropriate looping morphogenesis and their loss of function tends also to be characterized by a single, common, hypoplastic ventricular chamber. In mouse embryos lacking the early cardiac homeobox gene ...
... Knockout studies in mice have shown that several cardiac transcription factors are essential for appropriate looping morphogenesis and their loss of function tends also to be characterized by a single, common, hypoplastic ventricular chamber. In mouse embryos lacking the early cardiac homeobox gene ...
Clinical significance of matrix metalloproteinases activity in acute
... infarction (MI) patients. Their activity is tightly controlled in normal myocardium by a family of closely related tissue inhibitors known as TIMP. An imbalance in their activity might contribute to post-MI remodeling. Plasma levels of MMP-1, TIMP-1 and MMP-1/TIMP-1 complex were measured, using rele ...
... infarction (MI) patients. Their activity is tightly controlled in normal myocardium by a family of closely related tissue inhibitors known as TIMP. An imbalance in their activity might contribute to post-MI remodeling. Plasma levels of MMP-1, TIMP-1 and MMP-1/TIMP-1 complex were measured, using rele ...
THE HEART IN THE PNEUMOCONIOSIS OF COALMINERS
... was occasionally present with the advanced pulmonary phase but was often a sign of right heart failure. Engorgement of the neck veins was present only when the heart failed; it has not been seen in this series as a result of the pulmonary disorder alone. Warm hands were noted when failure occurred b ...
... was occasionally present with the advanced pulmonary phase but was often a sign of right heart failure. Engorgement of the neck veins was present only when the heart failed; it has not been seen in this series as a result of the pulmonary disorder alone. Warm hands were noted when failure occurred b ...
Wide Complex Tachycardias - Texas Tech University Health
... One of the most common lethal errors made in arrhythmia diagnosis is to mistake VT for SVT and treat with verapamil, diltiazem, and adenosine, all of which can precipitate ventricular fibrillation in patients in VT, even if initially stable. Therefore, all wide-complex tachycardias should be assumed ...
... One of the most common lethal errors made in arrhythmia diagnosis is to mistake VT for SVT and treat with verapamil, diltiazem, and adenosine, all of which can precipitate ventricular fibrillation in patients in VT, even if initially stable. Therefore, all wide-complex tachycardias should be assumed ...
Cardiac Resynchronization Therapy
... intraventricular conduction delay is associated with increased morbidity and mortality. Prolonged QRS duration in these patients contributes to abnormal septal wall motion, reduced cardiac contractility, decreased diastolic filling time and extended mitral valve regurgitation. Biventricular pacing o ...
... intraventricular conduction delay is associated with increased morbidity and mortality. Prolonged QRS duration in these patients contributes to abnormal septal wall motion, reduced cardiac contractility, decreased diastolic filling time and extended mitral valve regurgitation. Biventricular pacing o ...
File
... • Runs in AV groove to end into rt end of CS • May open directly into rt atrium 4. Oblique Vein of Lt Atrium (of Marshall) • Runs in the post surface of Lt Atrium and drains into Lt end of Coronary sinus 5. Post Vein of Lt Ventricle • Runs on diaphragmatic surface of Lt ventricle and ends in middle ...
... • Runs in AV groove to end into rt end of CS • May open directly into rt atrium 4. Oblique Vein of Lt Atrium (of Marshall) • Runs in the post surface of Lt Atrium and drains into Lt end of Coronary sinus 5. Post Vein of Lt Ventricle • Runs on diaphragmatic surface of Lt ventricle and ends in middle ...
Marked first-degree atrioventricular block. A new indication for
... pacing study in LPRI patients are questionable, especially if the PR interval is very long and does not shorten on exercise. During a resting study it may not be possible to demonstrate symptomatic improvement, and the execution of exercise studies with temporary dual-chamber pacemaker in place is d ...
... pacing study in LPRI patients are questionable, especially if the PR interval is very long and does not shorten on exercise. During a resting study it may not be possible to demonstrate symptomatic improvement, and the execution of exercise studies with temporary dual-chamber pacemaker in place is d ...
The prolonged QT interval - Postgraduate Medical Journal
... Myocardial repolarization is complex, poorly understood and even more difficult to study than depolarization. It is also, possibly because of its slower time course, more obviously affected by disease, drugs, and biochemical abnormalities. It is normally a well coordinated but non-uniform process, a ...
... Myocardial repolarization is complex, poorly understood and even more difficult to study than depolarization. It is also, possibly because of its slower time course, more obviously affected by disease, drugs, and biochemical abnormalities. It is normally a well coordinated but non-uniform process, a ...
File
... • Runs in AV groove to end into rt end of CS • May open directly into rt atrium 4. Oblique Vein of Lt Atrium (of Marshall) • Runs in the post surface of Lt Atrium and drains into Lt end of Coronary sinus 5. Post Vein of Lt Ventricle • Runs on diaphragmatic surface of Lt ventricle and ends in middle ...
... • Runs in AV groove to end into rt end of CS • May open directly into rt atrium 4. Oblique Vein of Lt Atrium (of Marshall) • Runs in the post surface of Lt Atrium and drains into Lt end of Coronary sinus 5. Post Vein of Lt Ventricle • Runs on diaphragmatic surface of Lt ventricle and ends in middle ...
CELLULAR RESPONSES OF THE MYOSIN
... have included agents with direct (β-adrenergic agonists; isoproterenol, ISO) or indirect (phosphodiesterase inhibition, PDE) effects on the calcium transient. A novel approach to improving cardiac contractility is to directly activate cardiac myosin. We now report on CK-0689705, a small molecule tha ...
... have included agents with direct (β-adrenergic agonists; isoproterenol, ISO) or indirect (phosphodiesterase inhibition, PDE) effects on the calcium transient. A novel approach to improving cardiac contractility is to directly activate cardiac myosin. We now report on CK-0689705, a small molecule tha ...
Non-Classical Indications for Cardiac Resynchronization Therapy
... Some of the major CRT trials have included a few patients with NYHA class II heart failure.4,46,47 These studies demonstrated an effect of CRT on echocardiographic measures of cardiac remodeling, but a very limited clinical effect on heart failure symptoms. In contrast, the MIRACLE ICD II trial show ...
... Some of the major CRT trials have included a few patients with NYHA class II heart failure.4,46,47 These studies demonstrated an effect of CRT on echocardiographic measures of cardiac remodeling, but a very limited clinical effect on heart failure symptoms. In contrast, the MIRACLE ICD II trial show ...
Echocardiographic assessment of pulmonary
... careful examination of the apex should be performed to exclude thrombus or an apical mass [7]. Diastolic opening of the tricuspid leaflets, which can also be assessed in this view, becomes less vigorous as PH progresses. The tricuspid valve leaflet adjacent to the free wall may be either the anterio ...
... careful examination of the apex should be performed to exclude thrombus or an apical mass [7]. Diastolic opening of the tricuspid leaflets, which can also be assessed in this view, becomes less vigorous as PH progresses. The tricuspid valve leaflet adjacent to the free wall may be either the anterio ...
- White Rose Research Online
... Multivariable analysis revealed %RVP, (but not complete heart block at baseline), serum creatinine and previous myocardial infarction to be independently related to the presence of LVSD. A model combining %RVP and previous myocardial infarction has a c-statistic of 0.74 for predicting LVSD. After a ...
... Multivariable analysis revealed %RVP, (but not complete heart block at baseline), serum creatinine and previous myocardial infarction to be independently related to the presence of LVSD. A model combining %RVP and previous myocardial infarction has a c-statistic of 0.74 for predicting LVSD. After a ...
A Case Report of Papillary Fibroelastoma Attached to Chorda
... discovered in an echocardiography within detailed examination of ischemic heart disease accidentally. We diagnosed him as ischemic heart disease and doubt of heart tumor. We thought about the danger of future embolism, surgical treatment was decided. We dissected the tumor together with one chorda t ...
... discovered in an echocardiography within detailed examination of ischemic heart disease accidentally. We diagnosed him as ischemic heart disease and doubt of heart tumor. We thought about the danger of future embolism, surgical treatment was decided. We dissected the tumor together with one chorda t ...
Inherited cardiac arrhythmia syndromes: What have they taught us
... infarction or in the context of dilated or hypertrophic cardiomyopathy) but for nearly 50 years it has also been recognised that some people will develop lethal cardiac arrhythmias despite having structurally normal hearts. It has also been known for over 40 years that these rare instances of “unexp ...
... infarction or in the context of dilated or hypertrophic cardiomyopathy) but for nearly 50 years it has also been recognised that some people will develop lethal cardiac arrhythmias despite having structurally normal hearts. It has also been known for over 40 years that these rare instances of “unexp ...
Tissue inhibitor
... infarction [12]. In patients with established or suspected coronary artery disease, TIMP-1 levels were independently predictive of all-cause mortality, cardiac mortality, and myocardial infarction risk [13,14]. TIMP-1 was associated with severity of diastolic compromise [15] and left ventricular mas ...
... infarction [12]. In patients with established or suspected coronary artery disease, TIMP-1 levels were independently predictive of all-cause mortality, cardiac mortality, and myocardial infarction risk [13,14]. TIMP-1 was associated with severity of diastolic compromise [15] and left ventricular mas ...
Heart Murmurs in Cats - Kingsbrook Animal Hospital
... extracardiac problem may have some sort of symptoms or clinical signs that can be attributed to the disease. However, the clinical signs may be subtle and inapparent until the disease becomes advanced. The most common symptoms that are observed with a cat that has a clinically significant heart murm ...
... extracardiac problem may have some sort of symptoms or clinical signs that can be attributed to the disease. However, the clinical signs may be subtle and inapparent until the disease becomes advanced. The most common symptoms that are observed with a cat that has a clinically significant heart murm ...
Development of Z-scores for fetal cardiac dimensions
... established in postnatal life, but have yet to be developed for fetal cardiac dimensions. These would be of real advantage to the clinician in accurately quantifying size and growth of cardiac dimensions and to the researcher by allowing mathematical comparison of growth in differing subgroups of a ...
... established in postnatal life, but have yet to be developed for fetal cardiac dimensions. These would be of real advantage to the clinician in accurately quantifying size and growth of cardiac dimensions and to the researcher by allowing mathematical comparison of growth in differing subgroups of a ...
Diastology: What the Radiologist Needs to Know. Objectives LV
... of typical symptoms and signs of HF in a patient who is shown to have a normal left ventricular ejection fraction and no valvular abnormalities on echocardiography. ...
... of typical symptoms and signs of HF in a patient who is shown to have a normal left ventricular ejection fraction and no valvular abnormalities on echocardiography. ...
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.