Cardiomyopathies
... • Restrictive cardiomyopathy refers to a group of disorders in which the heart chambers are unable to fill with blood properly because of stiffness of the heart. • In restrictive cardiomyopathy, the heart is normal in size or only slightly enlarged, but it cannot relax normally during diastole (that ...
... • Restrictive cardiomyopathy refers to a group of disorders in which the heart chambers are unable to fill with blood properly because of stiffness of the heart. • In restrictive cardiomyopathy, the heart is normal in size or only slightly enlarged, but it cannot relax normally during diastole (that ...
THE HEART
... muscles, contractions resulting from rapid repetitive stimulation can summate to provide sustained contraction. This can not happen in cardiac muscle because the long refractory period cancels any stimulus that occurs before the heart has a chance to relax. ...
... muscles, contractions resulting from rapid repetitive stimulation can summate to provide sustained contraction. This can not happen in cardiac muscle because the long refractory period cancels any stimulus that occurs before the heart has a chance to relax. ...
Heart rate variability in the course of ST
... in men than in women, although in the age subgroups (<65 years and ≥65 years) analysis the significant difference concerned only SDNNI in patients aged at least 65 years (41.5 ± 14.7 ms in male patients vs 35.3 ± 13.5 ms in female patients, p=0.023). No gender difference regarding EF in the whole st ...
... in men than in women, although in the age subgroups (<65 years and ≥65 years) analysis the significant difference concerned only SDNNI in patients aged at least 65 years (41.5 ± 14.7 ms in male patients vs 35.3 ± 13.5 ms in female patients, p=0.023). No gender difference regarding EF in the whole st ...
Cardiovascular System Prof. Dr. Malak A. Al
... Cardiac progenitor cells lie in the epiblast, lateral to the primitive streak. From there they migrate through the streak. Cells destined to form cranial segments of the heart( the outflow tract) migrate first, and cells forming more caudal portions( right ventricle, left ventricle, and sinus venosu ...
... Cardiac progenitor cells lie in the epiblast, lateral to the primitive streak. From there they migrate through the streak. Cells destined to form cranial segments of the heart( the outflow tract) migrate first, and cells forming more caudal portions( right ventricle, left ventricle, and sinus venosu ...
ATRIAL FIBRILLATION (AF). PERI
... hypotension, rate related myocardial ischaemia, heart failure and pulmonary oedema. Normal atrial activity accounts for at least 10% of ventricular filling, which can increase up to 40% at higher heart rates. The elderly population are more dependent on atrial filling owing to reduced elasticity of ...
... hypotension, rate related myocardial ischaemia, heart failure and pulmonary oedema. Normal atrial activity accounts for at least 10% of ventricular filling, which can increase up to 40% at higher heart rates. The elderly population are more dependent on atrial filling owing to reduced elasticity of ...
Atrial Fibrilation (AF).
... hypotension, rate related myocardial ischaemia, heart failure and pulmonary oedema. Normal atrial activity accounts for at least 10% of ventricular filling, which can increase up to 40% at higher heart rates. The elderly population are more dependent on atrial filling owing to reduced elasticity of ...
... hypotension, rate related myocardial ischaemia, heart failure and pulmonary oedema. Normal atrial activity accounts for at least 10% of ventricular filling, which can increase up to 40% at higher heart rates. The elderly population are more dependent on atrial filling owing to reduced elasticity of ...
Cardiac Conditions in Athletes - American College of Emergency
... American Heart Association council on nutrition, physical activity, and metabolism. Endorsed by the American College of Cardiology Foundation. Circulation 2007;115:1643-1655. ...
... American Heart Association council on nutrition, physical activity, and metabolism. Endorsed by the American College of Cardiology Foundation. Circulation 2007;115:1643-1655. ...
a PDF of this SUDDEN CARDIAC ARREST information
... you more likely to have arrhythmias is long QT syndrome (LQTS). LQTS is a disorder of the heart's electrical activity. Problems ...
... you more likely to have arrhythmias is long QT syndrome (LQTS). LQTS is a disorder of the heart's electrical activity. Problems ...
MP 2.02.16 Non-Invasive Measurement of Left Ventricular End
... failure, and its measurement may be useful in the management of patients with heart failure. However, to date, measurement of LVEDP has only been performed in the inpatient setting, since its measurement requires cardiac catheterization, either by direct measurement by placing a catheter in the left ...
... failure, and its measurement may be useful in the management of patients with heart failure. However, to date, measurement of LVEDP has only been performed in the inpatient setting, since its measurement requires cardiac catheterization, either by direct measurement by placing a catheter in the left ...
Welcome to the Cardiac Rehabilitation Department
... the heart, this blocks the blood flow to the area of heart muscle supplied by that artery. This portion of the heart muscle, deprived of oxygen, is then damaged. The amount of permanent damage to the heart muscle depends on a number of factors: the size of the clot; the location of the clot; how lon ...
... the heart, this blocks the blood flow to the area of heart muscle supplied by that artery. This portion of the heart muscle, deprived of oxygen, is then damaged. The amount of permanent damage to the heart muscle depends on a number of factors: the size of the clot; the location of the clot; how lon ...
Echocardiographic Assessment of Pulmonary Artery Systolic
... transplantation, previous or scheduled ventricular assist device implantation, known cardiac infiltrative disease, stage D HF requiring continuous inotropic support on an outpatient basis, pulmonary hypertension from causes other than leftsided heart disease (non-Group-2 pulmonary hypertension), or o ...
... transplantation, previous or scheduled ventricular assist device implantation, known cardiac infiltrative disease, stage D HF requiring continuous inotropic support on an outpatient basis, pulmonary hypertension from causes other than leftsided heart disease (non-Group-2 pulmonary hypertension), or o ...
Novel Bio-markers in heart failure: differences in regional circulatory
... our findings and plasma concentrations in samples that would be obtained in routine practice. We did not specifically cannulate and obtain samples from the renal or splanchnic veins that might have demonstrated more pronounced changes. This population was heterogeneous with only five patients having ...
... our findings and plasma concentrations in samples that would be obtained in routine practice. We did not specifically cannulate and obtain samples from the renal or splanchnic veins that might have demonstrated more pronounced changes. This population was heterogeneous with only five patients having ...
Yew can be really poisonous to You
... extract of yew plants can result in life threatening symptoms. Decontamination with gastroscopy and administration of activated charcoal can be useful after several hours. In the case of cardiac dysrhythmias lidocain can be given. Resuscitation should be practiced longer than usually. ...
... extract of yew plants can result in life threatening symptoms. Decontamination with gastroscopy and administration of activated charcoal can be useful after several hours. In the case of cardiac dysrhythmias lidocain can be given. Resuscitation should be practiced longer than usually. ...
2 nd degree AV Block, TYPE II
... Intermittent and sudden loss of conduction between atria and the ventricles Found below the bundle of his Can proceed to complete heart block Ventricular rate tends to be slower and cardiac output diminishes ...
... Intermittent and sudden loss of conduction between atria and the ventricles Found below the bundle of his Can proceed to complete heart block Ventricular rate tends to be slower and cardiac output diminishes ...
Left Ventricle: Ischemia and Function Small Group Discussion
... comparison to 2D. 3D echocardiography has been demonstrated to be useful in the assessment of global and regional left ventricular wall motion and quantification of systolic dyssynchrony. A systolic dyssynchrony index (SDI) may be calculated which is the standard deviation of regional ejection times ...
... comparison to 2D. 3D echocardiography has been demonstrated to be useful in the assessment of global and regional left ventricular wall motion and quantification of systolic dyssynchrony. A systolic dyssynchrony index (SDI) may be calculated which is the standard deviation of regional ejection times ...
Impact of surgical correction of pectus excavatum - diss.fu
... index, the maximum lateral distances of the left and right cardiac borders are measured from the midline (sterno-spinal line). CLLSH (%) was calculated using the formula described by Saleh et al. [15]. Cardiac morphology was quantified following the recently published society of cardiovascular magne ...
... index, the maximum lateral distances of the left and right cardiac borders are measured from the midline (sterno-spinal line). CLLSH (%) was calculated using the formula described by Saleh et al. [15]. Cardiac morphology was quantified following the recently published society of cardiovascular magne ...
Transcatheter Aortic Valve Implantation After Heart Transplantation
... The patient, a 67-year-old Caucasian man was admitted in March 2010 to our emergency room with acute pulmonary edema 9 years after orthotopic heart transplantation. He suffered from chronic hepatitis C. The patient had undergone aortic and mitral valve replacement for rheumatic valve disease in 1977 ...
... The patient, a 67-year-old Caucasian man was admitted in March 2010 to our emergency room with acute pulmonary edema 9 years after orthotopic heart transplantation. He suffered from chronic hepatitis C. The patient had undergone aortic and mitral valve replacement for rheumatic valve disease in 1977 ...
1551962 Targeting Toll-Like Receptor 4 (TLR4) Protects Against
... infiltration. TLR4-ko mice sustained significantly smaller infarctions compared with control mice given similar areas at risk. Cardiac function of TLR4-ko mice was not affected by LPS and demonstrated reduced suppression by MI compared to WT. Chimeras deficient in myocardial TLR4 were resistant to s ...
... infiltration. TLR4-ko mice sustained significantly smaller infarctions compared with control mice given similar areas at risk. Cardiac function of TLR4-ko mice was not affected by LPS and demonstrated reduced suppression by MI compared to WT. Chimeras deficient in myocardial TLR4 were resistant to s ...
ATRIAL SYSTOLE
... (green); the semilunar valves open, blood exits the ventricles, and the volume in the ventricles decreases rapidly (white). As more blood enters the arteries, pressure there builds until the flow of blood reaches a peak. The "c" wave of atrial pressure is not normally discernible in the jugular veno ...
... (green); the semilunar valves open, blood exits the ventricles, and the volume in the ventricles decreases rapidly (white). As more blood enters the arteries, pressure there builds until the flow of blood reaches a peak. The "c" wave of atrial pressure is not normally discernible in the jugular veno ...
Effects of Exercise Training
... Heart Transplantation Recommendations for Exercise Testing Exercise testing for heart transplant recipients can be done with either a treadmill or a stationary cycle ergometer and should follow a conservative exercise testing protocol that has relatively small increases in work rate per stage - e.g. ...
... Heart Transplantation Recommendations for Exercise Testing Exercise testing for heart transplant recipients can be done with either a treadmill or a stationary cycle ergometer and should follow a conservative exercise testing protocol that has relatively small increases in work rate per stage - e.g. ...
Cardiac cycle
... • To understand the volume, pressure and electrical changes during the cardiac cycle • To emphasize the inter-relationship between all these changes • To know the event that leads to the heart sounds • Recognize the relation ship of heart sounds with events of cardiac cycle ...
... • To understand the volume, pressure and electrical changes during the cardiac cycle • To emphasize the inter-relationship between all these changes • To know the event that leads to the heart sounds • Recognize the relation ship of heart sounds with events of cardiac cycle ...
Contraction Mechanisms in Cardiac Muscle
... strong inhibition at pH 6.5 and maximal release at pH 7.4. ...
... strong inhibition at pH 6.5 and maximal release at pH 7.4. ...
Cardiac contractility modulation
.jpg?width=300)
Cardiac contractility modulation (CCM) is a treatment for patients with moderate to severe left ventricular systolic heart failure (NYHA class II–IV). The short- and long-term use of this therapy enhances both the strength of ventricular contraction and the heart’s pumping capacity. The CCM mechanism is based on stimulation of the cardiac muscle by non-excitatory electrical signals (NES). CCM treatment is delivered by a pacemaker-like device that applies the NES, adjusted to and synchronized with the electrical action in the cardiac cycle.In CCM therapy, electrical stimulation is applied to the cardiac muscle during the absolute refractory period. In this phase of the cardiac cycle, electrical signals cannot trigger new cardiac muscle contractions, hence this type of stimulation is known as a non-excitatory stimulation. However, the electrical CCM signals increase the influx of calcium ions into the cardiac muscle cells (cardiomyocytes). In contrast to other electrical stimulation treatments for heart failure, such as pacemaker therapy or implantable cardioverter defibrillators (ICD), CCM does not affect the cardiac rhythm directly. Rather, the aim is to enhance the heart’s natural contraction (the native cardiac contractility) sustainably over long periods of time. Furthermore, unlike most interventions that increase cardiac contractility, CCM is not associated with an unfavorable increase in oxygen demand by the heart (measured in terms of Myocardial Oxygen Consumption or MVO2). This may be explained by the beneficial effect CCM has in improving cardiac efficiency. A meta-analysis in 2014 and an overview of device-based treatment options in heart failure in 2013 concluded that CCM treatment is safe, that it is generally beneficial to patients and that CCM treatment increases the exercise tolerance (ET) and quality of life (QoL) of patients. Furthermore, preliminary long-term survival data shows that CCM is associated with lower long-term mortality in heart failure patients when compared with expected rates among similar patients not treated with CCM.