fcfcomment_s9s3 Part..
... apparatus is to keep the valves from prolapsing into the atria when they close. The subvalvular apparatus have no effect on the opening and closure of the valves, however. This is caused entirely by the pressure gradient across the valve. The closure of the AV valves is heard as the first heart soun ...
... apparatus is to keep the valves from prolapsing into the atria when they close. The subvalvular apparatus have no effect on the opening and closure of the valves, however. This is caused entirely by the pressure gradient across the valve. The closure of the AV valves is heard as the first heart soun ...
Relation Between Left Ventricular Diastolic Pressure and Myocardial
... The instrument was set so that the studs on each of the 2 levers just rested on the heart's surface and a record of myocardial segment length was taken together with a record of left ventricular pressure (control). Next, the potentiometer assembly was vertically displaced, and the operator then atte ...
... The instrument was set so that the studs on each of the 2 levers just rested on the heart's surface and a record of myocardial segment length was taken together with a record of left ventricular pressure (control). Next, the potentiometer assembly was vertically displaced, and the operator then atte ...
Recommendations for Cardiac Chamber Quantification by
... mild, moderate, and severe abnormalities on the basis of SDs above or below the reference limit derived from a group of healthy people. The advantage of this method is that these data readily exist for most echocardiographic parameters. However, this approach is fundamentally flawed. First, not all ...
... mild, moderate, and severe abnormalities on the basis of SDs above or below the reference limit derived from a group of healthy people. The advantage of this method is that these data readily exist for most echocardiographic parameters. However, this approach is fundamentally flawed. First, not all ...
Four-Chamber Heart Modeling and Automatic
... and automatic detection. Important landmarks such as valves and cusp points on the interventricular septum are explicitly represented in our model. These landmarks can be detected reliably to guide the automatic model fitting process. We also propose two mechanisms, the rotation-axis based and paral ...
... and automatic detection. Important landmarks such as valves and cusp points on the interventricular septum are explicitly represented in our model. These landmarks can be detected reliably to guide the automatic model fitting process. We also propose two mechanisms, the rotation-axis based and paral ...
Ventricular Assist Devices and Total Artificial Hearts
... It is critical that the list of information below is submitted for review to determine if the policy criteria are met. If any of these items are not submitted, it could impact our review and decision outcome: ...
... It is critical that the list of information below is submitted for review to determine if the policy criteria are met. If any of these items are not submitted, it could impact our review and decision outcome: ...
The Anatomic Basis for High-Frequency Components in
... our own work involving over 2,000 dissections and several autopsy studies reported by Saphir.19 The right ventricular upper limit of normal was assumed to be 50 g, while the left ventricle and septum were considered enlarged if they exceeded 180 g. The all-male groups represented in the bar graph (f ...
... our own work involving over 2,000 dissections and several autopsy studies reported by Saphir.19 The right ventricular upper limit of normal was assumed to be 50 g, while the left ventricle and septum were considered enlarged if they exceeded 180 g. The all-male groups represented in the bar graph (f ...
Systematization and clinical study of `dextroversion, mirror
... suprahepatic segment of the inferior vena cava, and the visceral situs. (2) The direction of the apex: this indicates the heart position in a specific situs, determined by x-rays. Dextroversion is the malposition in situs solitus, as laevoversion is in situs inversus; dextrocardia is the normal posi ...
... suprahepatic segment of the inferior vena cava, and the visceral situs. (2) The direction of the apex: this indicates the heart position in a specific situs, determined by x-rays. Dextroversion is the malposition in situs solitus, as laevoversion is in situs inversus; dextrocardia is the normal posi ...
TotaI Excitation of the IsoIated Human Heart
... perfusion of the heart influenced the excitation of the ventricle. Five mongrel dogs, weighing 18 to 24 kg, were anesthetized with Na-pentobarbital (30 mg/kg). A midstemal thoracotomy was performed, and the heart was exposed. Multielectrode needIes were inserted into the ventricular wall, in one or ...
... perfusion of the heart influenced the excitation of the ventricle. Five mongrel dogs, weighing 18 to 24 kg, were anesthetized with Na-pentobarbital (30 mg/kg). A midstemal thoracotomy was performed, and the heart was exposed. Multielectrode needIes were inserted into the ventricular wall, in one or ...
The Cardiovascular System: The Heart
... blood is carried by the pulmonary veins back to the left side of the heart. Notice how unique this circulation is. Elsewhere in the body, veins carry relatively oxygen-poor blood to the heart, and arteries transport oxygen-rich blood from the heart. Exactly the opposite oxygenation conditions exist ...
... blood is carried by the pulmonary veins back to the left side of the heart. Notice how unique this circulation is. Elsewhere in the body, veins carry relatively oxygen-poor blood to the heart, and arteries transport oxygen-rich blood from the heart. Exactly the opposite oxygenation conditions exist ...
Cardiac Biomechanics
... by all but the most sophisticated thick-wall shell theories [1]. Ventricular geometry has been studied in most quantitative detail in the dog heart [2,3]. Geometric models have been very useful in the analysis, especially the use of confocal and nonconfocal ellipses of revolution to describe the epi ...
... by all but the most sophisticated thick-wall shell theories [1]. Ventricular geometry has been studied in most quantitative detail in the dog heart [2,3]. Geometric models have been very useful in the analysis, especially the use of confocal and nonconfocal ellipses of revolution to describe the epi ...
THE TOTAL CAVOPULMONARY CONNECTION RESISTANCE: A
... muscular dynamics and the vasodilation that occurs to aid the increase in cardiac output43. Studies have shown a drop of almost 50% in SVR. This is accomplished in the model by decreasing the SVRI progressively from 18.5 WU as measured from catheterization data to 11 WU for both the normal and the S ...
... muscular dynamics and the vasodilation that occurs to aid the increase in cardiac output43. Studies have shown a drop of almost 50% in SVR. This is accomplished in the model by decreasing the SVRI progressively from 18.5 WU as measured from catheterization data to 11 WU for both the normal and the S ...
Normal age-related changes in left ventricular function: Role of
... of the data presented and their discussed interpretation. ...
... of the data presented and their discussed interpretation. ...
health conditions
... The heart has four valves. The valves act like oneway doors. One set of valves opens to allow blood to flow into the heart's lower chambers (ventricles). Another set of valves opens to allow blood to be pumped out of the ventricles. Valves need to open fully to allow all of the available blood to en ...
... The heart has four valves. The valves act like oneway doors. One set of valves opens to allow blood to flow into the heart's lower chambers (ventricles). Another set of valves opens to allow blood to be pumped out of the ventricles. Valves need to open fully to allow all of the available blood to en ...
Echocardiographic recognition and implications of
... Hypertrophy of the ventricular trabeculations was defined qualitatively, since there are no data available for the range of normal trabecular size. In this evaluation deviations from the normal trabecular pattern in the left ventricle and right ventricle were considered.'3 For this study a trabecula ...
... Hypertrophy of the ventricular trabeculations was defined qualitatively, since there are no data available for the range of normal trabecular size. In this evaluation deviations from the normal trabecular pattern in the left ventricle and right ventricle were considered.'3 For this study a trabecula ...
Atrioventricular septal defect (AVSD)
... degrees of left-to-right shunting between atria, ventricles and AV valve incompetence (14, ...
... degrees of left-to-right shunting between atria, ventricles and AV valve incompetence (14, ...
MRI as a Lifesaving Tool in Hypertrophic Cardiomyopathy
... Kim R, E Chen, J Lima, et al. Myocardial Gd-DTPA kinetics determine MRI contrast enhancement and reflect the extent and severity of myocardial injury after acute reperfused infarction. Circulation. 1996; 94: 3318-3326 McKenna WJ, P Spirito, M Desnos, et al. Experience from clinical genetics in hyper ...
... Kim R, E Chen, J Lima, et al. Myocardial Gd-DTPA kinetics determine MRI contrast enhancement and reflect the extent and severity of myocardial injury after acute reperfused infarction. Circulation. 1996; 94: 3318-3326 McKenna WJ, P Spirito, M Desnos, et al. Experience from clinical genetics in hyper ...
Left Atrial Remodeling and Response to Valsartan in the Prevention
... 54.4% of patients had AFr. LAVmax was unchanged by rhythm, time or randomized treatment. Higher baseline LAVmax and lower LA emptying fraction (LAEF) were linearly related to increasing AFr duration during follow-up. ConclusionsĘGISSI-AF patients in sinus rhythm and history of AF showed severely inc ...
... 54.4% of patients had AFr. LAVmax was unchanged by rhythm, time or randomized treatment. Higher baseline LAVmax and lower LA emptying fraction (LAEF) were linearly related to increasing AFr duration during follow-up. ConclusionsĘGISSI-AF patients in sinus rhythm and history of AF showed severely inc ...
Prenatal diagnosis of major aortopulmonary collateral arteries
... In our study group, we noticed specific findings: more than one collateral visualised in foetal echocardiography can be associated with a poor postnatal prognosis (anatomical type II and III of PA). In our referral centre (Foetal Cardiology type C in Poland) we also had several foetuses without pren ...
... In our study group, we noticed specific findings: more than one collateral visualised in foetal echocardiography can be associated with a poor postnatal prognosis (anatomical type II and III of PA). In our referral centre (Foetal Cardiology type C in Poland) we also had several foetuses without pren ...
A mathematical model of left ventricular contraction and
... It is important to note that, although the causes differ, the clinical features and neurohumoral changes are indistinguishable between HFpEF and HFrEF, suggesting a mechanistic association. The processes involved on heart failure have been investigated for many decades but despite this the underlyin ...
... It is important to note that, although the causes differ, the clinical features and neurohumoral changes are indistinguishable between HFpEF and HFrEF, suggesting a mechanistic association. The processes involved on heart failure have been investigated for many decades but despite this the underlyin ...
Effect of Plethora and Hemorrhage on Left Ventricular Volume and
... valve. Their location was judged by the form of pressure tracings obtained with a Statham strain gage, and were verified at autopsy. Use of a fluoroscope was not found necessary. The EDV, ESV, and stroke volume of the left ventricle were determined as previously described. Approximately 1.5 ml. of 4 ...
... valve. Their location was judged by the form of pressure tracings obtained with a Statham strain gage, and were verified at autopsy. Use of a fluoroscope was not found necessary. The EDV, ESV, and stroke volume of the left ventricle were determined as previously described. Approximately 1.5 ml. of 4 ...
Cardiovascular Ultrasound
... and aldosterone (Canis Aldosterone Elisa Kit, Nanjing Jiancheng Bioengineering Institute) concentrations were both measured using ELISA. Plasma norepinephrine (NE) concentrations were measured using high-performance liquid chromatography [25,26]. ...
... and aldosterone (Canis Aldosterone Elisa Kit, Nanjing Jiancheng Bioengineering Institute) concentrations were both measured using ELISA. Plasma norepinephrine (NE) concentrations were measured using high-performance liquid chromatography [25,26]. ...
Left Atrial Appendage: Useless or Priceless?
... The LAA has several important physiological functions[1-3]: ...
... The LAA has several important physiological functions[1-3]: ...
hypertension pulmonary ventricular function in monocrotaline
... apelin acts as one of the most potent positive inotropic substances identified to date, both in normal (1, 3, 10, 35) and in heart failure (3, 10, 12) rats, including right ventricular (RV) failure secondary to hypoxia-induced pulmonary hypertension (PH). In normal hearts, these effects depend on ph ...
... apelin acts as one of the most potent positive inotropic substances identified to date, both in normal (1, 3, 10, 35) and in heart failure (3, 10, 12) rats, including right ventricular (RV) failure secondary to hypoxia-induced pulmonary hypertension (PH). In normal hearts, these effects depend on ph ...
Persistent Atrial Fibrillation And Atrial Flutter Complicated By
... The term tachycardiomyopathy refers to a specific form of tachycardia-related cardiomyopathy caused by supraventricular or ventricular tachyarrhytmias that are both associated with ventricular rates higher than 120 bpm. The arrhythmias which are most frequently associated with these forms of heart d ...
... The term tachycardiomyopathy refers to a specific form of tachycardia-related cardiomyopathy caused by supraventricular or ventricular tachyarrhytmias that are both associated with ventricular rates higher than 120 bpm. The arrhythmias which are most frequently associated with these forms of heart d ...
Bidirectional Ventricular Septal Defect Shunt: Quantification
... size of the defect and the degree of the pulmonary vascular resistance. Non-significant VSDs tend to have left to right shunts. Left-to-right gradient is maintained so long as the peak right ventricular systolic pressure is <70 mm Hg and the left-to-right gradient is 15-30 mm Hg. From that moment, a ...
... size of the defect and the degree of the pulmonary vascular resistance. Non-significant VSDs tend to have left to right shunts. Left-to-right gradient is maintained so long as the peak right ventricular systolic pressure is <70 mm Hg and the left-to-right gradient is 15-30 mm Hg. From that moment, a ...
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.