Species-specific differences of myosin content in the developing
... primitive vertebrates, i.e., cartilaginous fishes, both the embryonic and the adult heart show a segmental subdivision similar to that of the embryonic mammalian heart. Early morphogenetic events during cardiac development in the dogfish are long-lasting, providing a suitable model to study changes ...
... primitive vertebrates, i.e., cartilaginous fishes, both the embryonic and the adult heart show a segmental subdivision similar to that of the embryonic mammalian heart. Early morphogenetic events during cardiac development in the dogfish are long-lasting, providing a suitable model to study changes ...
A Comparison of Mathematical Models of Left Ventricular
... assumption of a “fixed” aortic diameter has demonstrated that the EDM provides a useful approximation of both SV and subsequent CO [4, 5]. In addition, this information can be provided to the clinician on a near-instantaneous basis. Furthermore, although the EDM cannot measure EDV, both the velocity ...
... assumption of a “fixed” aortic diameter has demonstrated that the EDM provides a useful approximation of both SV and subsequent CO [4, 5]. In addition, this information can be provided to the clinician on a near-instantaneous basis. Furthermore, although the EDM cannot measure EDV, both the velocity ...
Protocol for measuring myocardial blood flow by PET/CT in cats
... resolution distortion) were corrected as previously reported [11, 13, 22] using the method developed [23] and validated [24] by Hutchins et al. MPR was calculated as the ratio of hyperaemic to resting MBF values [10, 13, 22]. Under normal conditions, myocardial oxygen consumption is linearly related ...
... resolution distortion) were corrected as previously reported [11, 13, 22] using the method developed [23] and validated [24] by Hutchins et al. MPR was calculated as the ratio of hyperaemic to resting MBF values [10, 13, 22]. Under normal conditions, myocardial oxygen consumption is linearly related ...
Transcatheter Aortic Valve Replacement
... 1. Severe native valve aortic stenosis or failure defined by ≥ 1 of the following: a. Mean aortic valve gradient ≥ 40mmHg b. Peak jet velocity ≥ 4.0 m/s c. Aortic valve area (AVA) < 0.8 cm2 d. AVA Index < 0.6 cm2/m2 2. Presence of New York Heart Association (NYHA) symptoms ≥ class II 3. Inoperable o ...
... 1. Severe native valve aortic stenosis or failure defined by ≥ 1 of the following: a. Mean aortic valve gradient ≥ 40mmHg b. Peak jet velocity ≥ 4.0 m/s c. Aortic valve area (AVA) < 0.8 cm2 d. AVA Index < 0.6 cm2/m2 2. Presence of New York Heart Association (NYHA) symptoms ≥ class II 3. Inoperable o ...
Materials and Methods
... ortic valve insufficiency results from leakage and backflow of blood that is ejected from the left ventricle (LV) into the ascending aorta back into the left ventricle. Many mechanisms contribute to aortic valve insufficiency. These include abnormalities of the aortic valve leaflets and pathologies ...
... ortic valve insufficiency results from leakage and backflow of blood that is ejected from the left ventricle (LV) into the ascending aorta back into the left ventricle. Many mechanisms contribute to aortic valve insufficiency. These include abnormalities of the aortic valve leaflets and pathologies ...
Prof. Saeed Abuel Makarem Dr. Jamila El Medany
... interventricular septum: Division of the primordial ventricle is first indicated by a median muscular ridge, the primordial interventricular septum. • It is a thick crescen/c fold ...
... interventricular septum: Division of the primordial ventricle is first indicated by a median muscular ridge, the primordial interventricular septum. • It is a thick crescen/c fold ...
Percussion pacing*an almost forgotten procedure for
... the ulnar side of the fist fall from a height of approximately 20–30 cm above the chest, on left lower sternal edge. Because of its larger force, precordial thumps intended to terminate tachyarrhythmias are applied to the mid sternum, whereas for percussion pacing the lower left sternal edge is reco ...
... the ulnar side of the fist fall from a height of approximately 20–30 cm above the chest, on left lower sternal edge. Because of its larger force, precordial thumps intended to terminate tachyarrhythmias are applied to the mid sternum, whereas for percussion pacing the lower left sternal edge is reco ...
ADVANCE Study
... the Heart Team were included. Endpoints were a composite of major adverse cardiovascular and cerebrovascular events and results (MACCE; all-cause mortality, myocardial infarction, stroke, or reintervention) and mortality at 30 days and 1 year. Endpoint-related events were independently adjudicated b ...
... the Heart Team were included. Endpoints were a composite of major adverse cardiovascular and cerebrovascular events and results (MACCE; all-cause mortality, myocardial infarction, stroke, or reintervention) and mortality at 30 days and 1 year. Endpoint-related events were independently adjudicated b ...
Mitral and Tricuspid Annular Velocities in Constrictive Pericarditis
... values of RE=/SE= between patients with RCM and those in normal controls. According to the ROC curve analysis, LE=/SE= could efficiently differentiate CP from the other groups with a cutoff value of 1.13 (sensitivity 86%, specificity 83%, area under the curve 0.914, 95% confidence interval [CI]: 0.8 ...
... values of RE=/SE= between patients with RCM and those in normal controls. According to the ROC curve analysis, LE=/SE= could efficiently differentiate CP from the other groups with a cutoff value of 1.13 (sensitivity 86%, specificity 83%, area under the curve 0.914, 95% confidence interval [CI]: 0.8 ...
Review Article Heart failure with preserved ejection fraction
... the mitral inflow and LV outflow simultaneously by continuous waved Doppler. When the LV pressure falls below the left atrial (LA) pressure, the mitral valve opens and the early rapid filling phase begins. The peak early filling velocity is termed “E wave”, which is recorded with the deceleration ti ...
... the mitral inflow and LV outflow simultaneously by continuous waved Doppler. When the LV pressure falls below the left atrial (LA) pressure, the mitral valve opens and the early rapid filling phase begins. The peak early filling velocity is termed “E wave”, which is recorded with the deceleration ti ...
Left Ventricular Filling and Diastolic Pressure
... film; the framing rate was 60/sec. The developed films were projected so that the image on the screen was 1.5 times the size it would have been on the input phosphor of the image amplifier. The screws chosen for the analysis were those which consistently marked the cavity as shown by an angiogram. S ...
... film; the framing rate was 60/sec. The developed films were projected so that the image on the screen was 1.5 times the size it would have been on the input phosphor of the image amplifier. The screws chosen for the analysis were those which consistently marked the cavity as shown by an angiogram. S ...
KlInIčnI prImer/CASe reporT
... to 6.9 cm in diameter, compared to an aneurysm of 4.0 to 4.9 cm in diameter. They also observed a more than twofold annual growth rate (0.16 cm) in aneurysms with a diameter greater than 8 cm compared to those with the diameter of less than 4 cm. According to the recent guidelines from the American ...
... to 6.9 cm in diameter, compared to an aneurysm of 4.0 to 4.9 cm in diameter. They also observed a more than twofold annual growth rate (0.16 cm) in aneurysms with a diameter greater than 8 cm compared to those with the diameter of less than 4 cm. According to the recent guidelines from the American ...
Tasers -Circulation-2012-Zipes-2417-22
... increased rate plus sympathetic effects can shorten ventricular refractoriness to permit further ECD-induced rate acceleration that eventually causes VF from the rapid rate or R on T. Because a sharp blood pressure reduction results from the rapid rate, repeated shocks or those exceeding the recomme ...
... increased rate plus sympathetic effects can shorten ventricular refractoriness to permit further ECD-induced rate acceleration that eventually causes VF from the rapid rate or R on T. Because a sharp blood pressure reduction results from the rapid rate, repeated shocks or those exceeding the recomme ...
AED Frequently Asked Questions (FAQ`s)
... rhythm is restored, death will follow within a matter of minutes. The cause of sudden cardiac arrest is not well understood. Many victims have no history of heart disease, or if heart disease is present, it has not functionally impaired them. Unlike a heart attack, which is the death of muscle tissu ...
... rhythm is restored, death will follow within a matter of minutes. The cause of sudden cardiac arrest is not well understood. Many victims have no history of heart disease, or if heart disease is present, it has not functionally impaired them. Unlike a heart attack, which is the death of muscle tissu ...
Development of cardiac conduction system in mammals with a focus
... modulation, the intrinsic rhythm of the adult mammalian heart is determined within the tissues of the cardiac pacemaker — the sinuatrial (SA) node. The SA node is situated at the inflow port of the cardiac pump, or more formally, at the boundary of the superior caval vein and the right atrium. Follo ...
... modulation, the intrinsic rhythm of the adult mammalian heart is determined within the tissues of the cardiac pacemaker — the sinuatrial (SA) node. The SA node is situated at the inflow port of the cardiac pump, or more formally, at the boundary of the superior caval vein and the right atrium. Follo ...
Management of tricuspid valve regurgitation
... but should be followed more closely. Clinical detection of TR is simple and accurate.6 13 Raised jugular venous pressure, hepatomegaly, pulsatile liver and hepato-jugular reflux are followed by ankle swelling and, later, by ascites and generalised oedema. The characteristic systolic wave is both vis ...
... but should be followed more closely. Clinical detection of TR is simple and accurate.6 13 Raised jugular venous pressure, hepatomegaly, pulsatile liver and hepato-jugular reflux are followed by ankle swelling and, later, by ascites and generalised oedema. The characteristic systolic wave is both vis ...
Pericardial diseases
... Thirty-one to 57% of pericardial effusion have a neoplastic etiology in the dog.7,9 Therefore, a meticulous examination of the heart for the presence of any suspicious mass by echocardiography is mandatory when evaluating a dog with pericardial effusion. 20 The most common tumors include hemangiosar ...
... Thirty-one to 57% of pericardial effusion have a neoplastic etiology in the dog.7,9 Therefore, a meticulous examination of the heart for the presence of any suspicious mass by echocardiography is mandatory when evaluating a dog with pericardial effusion. 20 The most common tumors include hemangiosar ...
Effects of exercise training on left ventricular structure and function in
... size. Increased peak V02 and reduced abdominal fat, BP, and IR were associated with improved LV diastolic function. R-values ranged from 0.20-0.32 (P≥0.05). Conclusions: When examined by group assignment, exercise had no effect on cardiac size or LV diastolic function. When examining individual vari ...
... size. Increased peak V02 and reduced abdominal fat, BP, and IR were associated with improved LV diastolic function. R-values ranged from 0.20-0.32 (P≥0.05). Conclusions: When examined by group assignment, exercise had no effect on cardiac size or LV diastolic function. When examining individual vari ...
The effect of myocardial fibrosis on left ventricular torsion
... Background: Left ventricular (LV) rotation, twist, and torsion are important aspects of the cardiac performance. Myocardial fibrosis can be identified as the late gadolinium enhancement (LGE) in cardiac magnetic resonance (CMR). In this study, we investigated the association between myocardial fibro ...
... Background: Left ventricular (LV) rotation, twist, and torsion are important aspects of the cardiac performance. Myocardial fibrosis can be identified as the late gadolinium enhancement (LGE) in cardiac magnetic resonance (CMR). In this study, we investigated the association between myocardial fibro ...
Strain Rate Acceleration Yields a Better Index for Evaluating Left
... recoil, and passive filling events in the region of interest including those caused by tethering from adjacent segments and it is affected by translational artifacts, whereas SR is calculated along the echocardiography beam direction as the velocity difference between 2 points on the muscle divided ...
... recoil, and passive filling events in the region of interest including those caused by tethering from adjacent segments and it is affected by translational artifacts, whereas SR is calculated along the echocardiography beam direction as the velocity difference between 2 points on the muscle divided ...
Print - Circulation
... has been postulated to provide a stimulus for further left ventricular (LV) structural and functional derangement. We tested the hypothesis that chronic administration of the angiotensin converting enzyme (ACE) inhibitor enalapril prevents or reverses LV dilatation and systolic dysfunction among pat ...
... has been postulated to provide a stimulus for further left ventricular (LV) structural and functional derangement. We tested the hypothesis that chronic administration of the angiotensin converting enzyme (ACE) inhibitor enalapril prevents or reverses LV dilatation and systolic dysfunction among pat ...
Tetralogy of fallot - The department of cardiology, Calicut medical
... RA & ASD • The right atrium is enlarged and hypertrophied. ...
... RA & ASD • The right atrium is enlarged and hypertrophied. ...
Transcatheter Closure of Atrial Septal Defect in Ebstein`s Anomaly
... heart disease is associated with two major complications: systemic embolization and desaturation. The cerebral events are mostly in the presence of a right-to-left shunting through the atrial septum. Percutaneous closure of patent foramen ovale is considered at least as effective as medical treatmen ...
... heart disease is associated with two major complications: systemic embolization and desaturation. The cerebral events are mostly in the presence of a right-to-left shunting through the atrial septum. Percutaneous closure of patent foramen ovale is considered at least as effective as medical treatmen ...
Prosthesis–patient mismatch after aortic valve replacement
... ventricular mass regression after aortic valve replacement remains controversial. Data on whether the clinical effect of prosthesis–patient mismatch depends on left ventricular function at the time of aortic valve replacement are lacking. This study examined the long-term clinical and echocardiograp ...
... ventricular mass regression after aortic valve replacement remains controversial. Data on whether the clinical effect of prosthesis–patient mismatch depends on left ventricular function at the time of aortic valve replacement are lacking. This study examined the long-term clinical and echocardiograp ...
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.