The thick left ventricular wall of the giraffe heart normalises wall
... End-diastolic and end-systolic volumes were 521±61 ml and 228±42 ml, respectively, yielding an ejection fraction of 56±4% and a stroke volume of 0.59 ml kg−1. Left ventricular circumferential wall stress was 7.83±1.76 kPa. We conclude that, relative to body mass, a small left ventricular cavity and ...
... End-diastolic and end-systolic volumes were 521±61 ml and 228±42 ml, respectively, yielding an ejection fraction of 56±4% and a stroke volume of 0.59 ml kg−1. Left ventricular circumferential wall stress was 7.83±1.76 kPa. We conclude that, relative to body mass, a small left ventricular cavity and ...
THE ROLE OF AUTONOMIC AND MYOCARDIAL FACTORS I.N
... into the left ventricle for pressure recordings. The animal was then suspended horizontally between two cinefluorographic units so that right and left anterior oblique views of the heart were simultaneously recorded. Breathing was controlled throughout the period of suspension by a Thompson pump res ...
... into the left ventricle for pressure recordings. The animal was then suspended horizontally between two cinefluorographic units so that right and left anterior oblique views of the heart were simultaneously recorded. Breathing was controlled throughout the period of suspension by a Thompson pump res ...
RHEUMATIC HEART DISEASE
... Symptoms tend to develop subtly, progressively worsen over 1 to 2 months, and spontaneously resolve gradually after 3 to 6 months. Residual waxing and waning of symptoms may occur for a year or more, and 20% of patients have ...
... Symptoms tend to develop subtly, progressively worsen over 1 to 2 months, and spontaneously resolve gradually after 3 to 6 months. Residual waxing and waning of symptoms may occur for a year or more, and 20% of patients have ...
Case Report Contained Left Ventricular Free Wall Rupture
... Rupture of the free wall of the left ventricle occurs in approximately 4% of patients with myocardial infarction (MI) and accounts for approximately 20% of mortality of these patients [1, 2]. Premortem diagnosis of rupture is made in approximately 15% of in-hospital deaths from acute MI in a coronar ...
... Rupture of the free wall of the left ventricle occurs in approximately 4% of patients with myocardial infarction (MI) and accounts for approximately 20% of mortality of these patients [1, 2]. Premortem diagnosis of rupture is made in approximately 15% of in-hospital deaths from acute MI in a coronar ...
Cardiac Perforation and Multiple Emboli After Percutaneous
... asymptomatic, with fewer than 1% presenting with dyspnea,1 and require only observation without treatment. However, for symptomatic cases or patients with a central embolism, standard treatment guidelines for pulmonary thromboembolism, such as anticoagulation, should be followed.6 For patients with ...
... asymptomatic, with fewer than 1% presenting with dyspnea,1 and require only observation without treatment. However, for symptomatic cases or patients with a central embolism, standard treatment guidelines for pulmonary thromboembolism, such as anticoagulation, should be followed.6 For patients with ...
DORV DR KSHITIJ
... The systolic murmur may be diminished or absent The second sound is very loud and single. A decrescendo diastolic murmur of pulmonary valve insufficiency may be present. ...
... The systolic murmur may be diminished or absent The second sound is very loud and single. A decrescendo diastolic murmur of pulmonary valve insufficiency may be present. ...
Introduction to fetal echo
... coming from the left hepatic vein (and ductus) and the desaturated blood from the rest of the inferior vena cava. The oxygenated blood enters the foramen ovale, while the desaturated blood goes through the tricuspid valve2. The foramen ovale is bordered on its inferior edge by the septum primum that ...
... coming from the left hepatic vein (and ductus) and the desaturated blood from the rest of the inferior vena cava. The oxygenated blood enters the foramen ovale, while the desaturated blood goes through the tricuspid valve2. The foramen ovale is bordered on its inferior edge by the septum primum that ...
Multiple inheritance problem in semantic spreading
... Abstract. Semantic networks inspired by semantic information processing by the brain frequently do not improve the results of text classification. This counterintuitive fact is explained here by the multiple inheritance problem, which corrupts real-world knowledge representation attempts. After a re ...
... Abstract. Semantic networks inspired by semantic information processing by the brain frequently do not improve the results of text classification. This counterintuitive fact is explained here by the multiple inheritance problem, which corrupts real-world knowledge representation attempts. After a re ...
The small giraffe heart normalises ventricular wall tension, but
... high intraventricular blood pressure by having a lower left ventricular radius and a thicker ventricular wall (Mitchell and Skinner, 2009). This can be achieved by a typical mammalian heart mass relative to body mass, but must entail a lower stroke volume (SV) per unit of cardiac mass than in simila ...
... high intraventricular blood pressure by having a lower left ventricular radius and a thicker ventricular wall (Mitchell and Skinner, 2009). This can be achieved by a typical mammalian heart mass relative to body mass, but must entail a lower stroke volume (SV) per unit of cardiac mass than in simila ...
Lecture 14 - CV Pump physiology
... – Blood comes in from Venous Return – Despite lots of flow, there is little change in pressure – Thus, the Venous return is from a capacitant system and provides preload to the heart ...
... – Blood comes in from Venous Return – Despite lots of flow, there is little change in pressure – Thus, the Venous return is from a capacitant system and provides preload to the heart ...
- American Association for Thoracic Surgery
... blood units per patient, compared with the control group (0.39 units vs. 1.12 units, respectively). The mean hemoglobin level on postoperative day 4 in the HRE group was slightly over 10 g/dL, compared with 9 g/dL in the control group, also a significant difference, said Dr. Weltert. “Our new, simpl ...
... blood units per patient, compared with the control group (0.39 units vs. 1.12 units, respectively). The mean hemoglobin level on postoperative day 4 in the HRE group was slightly over 10 g/dL, compared with 9 g/dL in the control group, also a significant difference, said Dr. Weltert. “Our new, simpl ...
Reference values for variables of fetal cardiocirculatory
... systolic velocity − velocity during atrial contaction)/timeaveraged maximum velocity. All the Doppler recordings were performed during fetal quiescence over 4–6 cardiac cycles. For all the parameters assessed, an average of three separate measurements was used for statistical analysis. All the parti ...
... systolic velocity − velocity during atrial contaction)/timeaveraged maximum velocity. All the Doppler recordings were performed during fetal quiescence over 4–6 cardiac cycles. For all the parameters assessed, an average of three separate measurements was used for statistical analysis. All the parti ...
Arrhythmogenic right ventricular cardiomyopathy
... of the thin RV wall. Moreover, progressive and extensive fibro-fatty myocardial degeneration may compromise effectiveness of ICD interventions. Although antiarrhythmic medications (sotalol, amiodarone), and radiofrequency (RF) ablation can decrease the number of ventricular arrhythmias, these method ...
... of the thin RV wall. Moreover, progressive and extensive fibro-fatty myocardial degeneration may compromise effectiveness of ICD interventions. Although antiarrhythmic medications (sotalol, amiodarone), and radiofrequency (RF) ablation can decrease the number of ventricular arrhythmias, these method ...
Left ventricular wall rupture following non penetrating trauma to the
... are prevented from externally applied blunt force trauma due to chest wall structure composed of the rigid rib cage, sternum, scapulae and clavicles, approximately 25% deaths are caused by chest or thoracic trauma.1,2 Injuries to the chest may be divided into two groups: 1. Penetrating or ‘open’ che ...
... are prevented from externally applied blunt force trauma due to chest wall structure composed of the rigid rib cage, sternum, scapulae and clavicles, approximately 25% deaths are caused by chest or thoracic trauma.1,2 Injuries to the chest may be divided into two groups: 1. Penetrating or ‘open’ che ...
LUHS Handbook Approval
... Initiated with a premature complex (PAC / PVC) and can be divided into one of two varieties: 1) typical AVNRT (antegrade conduction down slow pathand retrograde up fast path): 80-90% of cases and 2) atypical AVNRT (antegrade down fast path and retrograde up slow path): 10-20% of cases. Rhythm is rap ...
... Initiated with a premature complex (PAC / PVC) and can be divided into one of two varieties: 1) typical AVNRT (antegrade conduction down slow pathand retrograde up fast path): 80-90% of cases and 2) atypical AVNRT (antegrade down fast path and retrograde up slow path): 10-20% of cases. Rhythm is rap ...
Practical stepwise approach to rhythm disturbances in congenital
... Step 4, for the rapid conduction component: Left ventricle is normal in volume and function, but right ventricle is dilated with severe pulmonary regurgitation and surgical scar. Step 5, for risk stratification: He has several risk factors, such as older age at initial repair, prolonged QRS duration ...
... Step 4, for the rapid conduction component: Left ventricle is normal in volume and function, but right ventricle is dilated with severe pulmonary regurgitation and surgical scar. Step 5, for risk stratification: He has several risk factors, such as older age at initial repair, prolonged QRS duration ...
Student-Athlete Cardiac Assessment Professional Development
... presence of possible ischemia in the hypertrophied muscle, induced by increased heart rate and blood pressure during exercise, as well as the intense sympathe?c discharge. ...
... presence of possible ischemia in the hypertrophied muscle, induced by increased heart rate and blood pressure during exercise, as well as the intense sympathe?c discharge. ...
CO = HR x SV SV = EDV - ESV Cardiac Output Cardiac output can
... If you have two cardiac cycles…one with a standard preload and standard ejection, and one with high aortic pressure and the same preload….you will not get the same ejection. It takes longer to open the valve and it doesn’t stay open as long. So, ejection goes down, ESV goes up, but EDV stays the sam ...
... If you have two cardiac cycles…one with a standard preload and standard ejection, and one with high aortic pressure and the same preload….you will not get the same ejection. It takes longer to open the valve and it doesn’t stay open as long. So, ejection goes down, ESV goes up, but EDV stays the sam ...
Mechanisms Underlying Isovolumic Contraction and
... Changing the orientation of the rib by 15 affected the peak amplitudes in the SCG as well as the morphologies (Fig. 2(c)), signals represented by dashed lines). Unlike in the experiment (see Fig. 1), the morphology of the simulated seismo- cardiographic signal does not change significantly during r ...
... Changing the orientation of the rib by 15 affected the peak amplitudes in the SCG as well as the morphologies (Fig. 2(c)), signals represented by dashed lines). Unlike in the experiment (see Fig. 1), the morphology of the simulated seismo- cardiographic signal does not change significantly during r ...
Figure 1 - Cardiac Mechanics Research Group
... ventricular arrhythmias recorded by ECG and optical mapping. These hearts showed disturbed activation wavefront propagation, quantified by a greater negative wavefront curvature. Volume loading of the wild-type ventricle to 30 mmHg resulted in decreased conduction velocity by approximately 10%. The ...
... ventricular arrhythmias recorded by ECG and optical mapping. These hearts showed disturbed activation wavefront propagation, quantified by a greater negative wavefront curvature. Volume loading of the wild-type ventricle to 30 mmHg resulted in decreased conduction velocity by approximately 10%. The ...
Strain Rate Imaging in Normal and Reduced Diastolic
... Figure 2 Strain rate imaging from a healthy subject, illustrating the color mapping of strain rate and the principle of the longitudinal M-mode technique. A, Still frames from systole (left) and early filling (right), showing negative strain rate (systolic shortening) as yellow to red colors and pos ...
... Figure 2 Strain rate imaging from a healthy subject, illustrating the color mapping of strain rate and the principle of the longitudinal M-mode technique. A, Still frames from systole (left) and early filling (right), showing negative strain rate (systolic shortening) as yellow to red colors and pos ...
Task force I: Congenital heart disease
... combinations of malformations of the cardiovascular system now identifiable by noninvasive or invasive means. It is impractical to attempt to define limits for patients with each of these defects, but for this conference several common defects have been considered. These defects include ob• structiv ...
... combinations of malformations of the cardiovascular system now identifiable by noninvasive or invasive means. It is impractical to attempt to define limits for patients with each of these defects, but for this conference several common defects have been considered. These defects include ob• structiv ...
Impact of New-Onset Persistent Left Bundle Branch Block on Late
... NOP-LBBB are shown in Table 1. Patients who had NOPLBBB were younger (p ¼ 0.006), had a higher prevalence of hypertension (p ¼ 0.040) and diabetes mellitus (p ¼ 0.005), and more frequently underwent the TAVI procedure through transapical approach (p ¼ 0.005) and received a 29mm valve (p ¼ 0.041). Tr ...
... NOP-LBBB are shown in Table 1. Patients who had NOPLBBB were younger (p ¼ 0.006), had a higher prevalence of hypertension (p ¼ 0.040) and diabetes mellitus (p ¼ 0.005), and more frequently underwent the TAVI procedure through transapical approach (p ¼ 0.005) and received a 29mm valve (p ¼ 0.041). Tr ...
a PDF of this article. - Journal of Invasive Cardiology
... QRS axis shift was thought to be associated with edema and the implanted valve’s proximity to the left conduction system. In our study, mean HV intervals were 47.3 ± 7.8 ms and 55.9 ± 11.5 ms (P<.001) before and after the procedure, respectively. HV interval was significantly prolonged after the pro ...
... QRS axis shift was thought to be associated with edema and the implanted valve’s proximity to the left conduction system. In our study, mean HV intervals were 47.3 ± 7.8 ms and 55.9 ± 11.5 ms (P<.001) before and after the procedure, respectively. HV interval was significantly prolonged after the pro ...
Mitral insufficiency
Mitral insufficiency (MI), mitral regurgitation or mitral incompetence is a disorder of the heart in which the mitral valve does not close properly when the heart pumps out blood. It is the abnormal leaking of blood backwards from the left ventricle, through the mitral valve, into the left atrium, when the left ventricle contracts, i.e. there is regurgitation of blood back into the left atrium. MI is the most common form of valvular heart disease.