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 ...
Arrhythmias in ECGs - Auckland Heart Group
... • Your practice nurse obtains an ECG • The tachycardia then spontaneously stops • A further ECG is normal • She has a history of hypertension and recently had a TIA with a normal Carotid Doppler Her CHA2DS2VASc score is: ...
... • Your practice nurse obtains an ECG • The tachycardia then spontaneously stops • A further ECG is normal • She has a history of hypertension and recently had a TIA with a normal Carotid Doppler Her CHA2DS2VASc score is: ...
Left Atrial Ejection Force (LAEF)
... patients with congestive heart failure (CHF) or paroxysmal atrial fibrillation (PAF) were also studied. Principle: According to Newton’s law of motion, LAEF is calculated as LA ejection volume ´ acceleration of flow. LA ejection volume = mitral valve area (MVA) ´ time velocity integral of mitral flo ...
... patients with congestive heart failure (CHF) or paroxysmal atrial fibrillation (PAF) were also studied. Principle: According to Newton’s law of motion, LAEF is calculated as LA ejection volume ´ acceleration of flow. LA ejection volume = mitral valve area (MVA) ´ time velocity integral of mitral flo ...
Transcatheter Aortic-Valve Implantation for Aortic
... candidates. Approximately 30% of patients presenting with severe aortic stenosis do not undergo open surgery due to factors such as advanced age, advanced left ventricular dysfunction, or multiple medical comorbidities. (5) For patients who are not surgical candidates, medical therapy can partially ...
... candidates. Approximately 30% of patients presenting with severe aortic stenosis do not undergo open surgery due to factors such as advanced age, advanced left ventricular dysfunction, or multiple medical comorbidities. (5) For patients who are not surgical candidates, medical therapy can partially ...
Double Outlet Right Ventricle With Pulmonary Stenosis - Heart
... ventricular septal defect which lies near to the pulmonary artery and is relatively remote from the aortic orifice. Flow from the right ventricle is mainly into the aorta, and these patients are cyanotic from birth. Type 2b. Here there is a large supracristal ventricular septal defect related to bot ...
... ventricular septal defect which lies near to the pulmonary artery and is relatively remote from the aortic orifice. Flow from the right ventricle is mainly into the aorta, and these patients are cyanotic from birth. Type 2b. Here there is a large supracristal ventricular septal defect related to bot ...
Multimodality Imaging Strategies for the Assessment of Aortic Stenosis
... LF-LG AS has the worst prognosis and those with NF-LG AS has the best prognosis.4,7,14 Furthermore, AVR improves outcomes in both patients with HG AS and those with paradoxical LF-LG AS. In patients with NF-LG AS, previous studies have yielded conflicting results on the effect of AVR on outcomes. Th ...
... LF-LG AS has the worst prognosis and those with NF-LG AS has the best prognosis.4,7,14 Furthermore, AVR improves outcomes in both patients with HG AS and those with paradoxical LF-LG AS. In patients with NF-LG AS, previous studies have yielded conflicting results on the effect of AVR on outcomes. Th ...
Print - Circulation Research
... line of thinking prevails, since variables derived from studies on isolated muscle are determined for the whole heart to establish its performance (Mason et al., 1970). The task of the heart is to transport arterial blood to the various organs and venous blood to the lungs. It does this by ejecting ...
... line of thinking prevails, since variables derived from studies on isolated muscle are determined for the whole heart to establish its performance (Mason et al., 1970). The task of the heart is to transport arterial blood to the various organs and venous blood to the lungs. It does this by ejecting ...
Case Report Leiomyosarcoma of Pulmonary Vein Presenting as Left
... Treatment is essentially palliative complete surgical excision. We outline the principles of management with the case of a 39-yearold man with leiomyosarcoma of the left pulmonary veins extending into the left atrium. Extensive investigation to achieve early diagnosis and determine extent of disease ...
... Treatment is essentially palliative complete surgical excision. We outline the principles of management with the case of a 39-yearold man with leiomyosarcoma of the left pulmonary veins extending into the left atrium. Extensive investigation to achieve early diagnosis and determine extent of disease ...
bYTEBoss Ventricular arrhythmias EP overview Medtronic
... resulting ECG should be identical to the ECG taken during tachycardia • Delivering RF energy to this site usually eliminates ventricular tachycardia ...
... resulting ECG should be identical to the ECG taken during tachycardia • Delivering RF energy to this site usually eliminates ventricular tachycardia ...
Emergency stenting of vertical vein in a neonate with obstructed
... pulmonary vasoconstriction. These will cause an increase in pulmonary artery and right ventricular pressures. As the right ventricular compliance decreases there will be more shunting across the atrial septal defect from right to left, causing severe cyanosis and hypoxaemia. This leads to acidosis, ...
... pulmonary vasoconstriction. These will cause an increase in pulmonary artery and right ventricular pressures. As the right ventricular compliance decreases there will be more shunting across the atrial septal defect from right to left, causing severe cyanosis and hypoxaemia. This leads to acidosis, ...
Print this article
... is created and then a tunnel fashioned that directs blood from the aorta to the left coronary ostiumetc. However in ALADPA, there are not much of modalities reported.10-13 Ligation of the anomalous artery or connecting it to the aorta has been recommended.14 Early surgical intervention has been foun ...
... is created and then a tunnel fashioned that directs blood from the aorta to the left coronary ostiumetc. However in ALADPA, there are not much of modalities reported.10-13 Ligation of the anomalous artery or connecting it to the aorta has been recommended.14 Early surgical intervention has been foun ...
Unfavourable Effects of Continuous, Atrial
... possibly add valuable adjunctive diagnostic and prognostic information in VP patients, since elevations of BNP have been associated with increased LV filling pressures. It has been suggested that BNP values of 25-62 pg/mL might be used to rule out isolated diastolic abnormalities seen on echocardiog ...
... possibly add valuable adjunctive diagnostic and prognostic information in VP patients, since elevations of BNP have been associated with increased LV filling pressures. It has been suggested that BNP values of 25-62 pg/mL might be used to rule out isolated diastolic abnormalities seen on echocardiog ...
The Effect of Liver Cirrhosis Severity on Left Ventricular Systolic and
... in the development of certain arrhythmias, especially in the genesis of atrial fibrillation [7] . Since cardiac function is nearly normal at rest, the diagnosis of this disorder is not easy. In most cases this condition is well tolerated and may be asymptomatic for a long period of time, and it is o ...
... in the development of certain arrhythmias, especially in the genesis of atrial fibrillation [7] . Since cardiac function is nearly normal at rest, the diagnosis of this disorder is not easy. In most cases this condition is well tolerated and may be asymptomatic for a long period of time, and it is o ...
Truncus Arteriosus Associated with Interrupted Aortic Arch in 50
... the standardization and comprehensiveness of submitted echocardiographic reports, we adapted an echocardiographic measurement protocol for TA associated with IAA from our previously described protocol for patients with left heart obstructive lesions [17]. Initial (before any important intervention) ...
... the standardization and comprehensiveness of submitted echocardiographic reports, we adapted an echocardiographic measurement protocol for TA associated with IAA from our previously described protocol for patients with left heart obstructive lesions [17]. Initial (before any important intervention) ...
Bicuspid Aortic Valve Disease Beyond the Aortic Root
... of the aortic diameter. Thus, for a given Eh, a larger vessel diameter would be expected to result in a lower PWV. However, in the study by Tzemos et al. (15), subjects with dilated aortas had a higher PWV than the other 2 groups, who had smaller aortic root diameters. This finding indicates that th ...
... of the aortic diameter. Thus, for a given Eh, a larger vessel diameter would be expected to result in a lower PWV. However, in the study by Tzemos et al. (15), subjects with dilated aortas had a higher PWV than the other 2 groups, who had smaller aortic root diameters. This finding indicates that th ...
The Cardiovascular System
... atrioventricular bundle, also called the bundle of His. The bundle of His divides into left and right bundle branches and causes the ventricles to contract, forcing blood away from the heart during systole. At the end of these branches are the Purkinje fibers, specialized fibers that conduct the cha ...
... atrioventricular bundle, also called the bundle of His. The bundle of His divides into left and right bundle branches and causes the ventricles to contract, forcing blood away from the heart during systole. At the end of these branches are the Purkinje fibers, specialized fibers that conduct the cha ...
Hydraulic forces contribute to left ventricular diastolic filling
... in a physical model (Fig. 1 and Supplemental Video S1), and the hydraulic force magnitude was found to be an important component of the total force responsible for left ventricular filling. These findings bring new insights into the physiological mechanisms governing diastolic function. The size of ...
... in a physical model (Fig. 1 and Supplemental Video S1), and the hydraulic force magnitude was found to be an important component of the total force responsible for left ventricular filling. These findings bring new insights into the physiological mechanisms governing diastolic function. The size of ...
Diastolic Dysfunction Cardiovascular Aging and the
... The pathophysiology of diastolic heart failure is characterized by a low cardiac output state resulting from a stiff, thickened ventricle with a small cavity. Relaxation is slow in early diastole and offers greater resistance to filling in late diastole, so that diastolic pressures are elevated. Ele ...
... The pathophysiology of diastolic heart failure is characterized by a low cardiac output state resulting from a stiff, thickened ventricle with a small cavity. Relaxation is slow in early diastole and offers greater resistance to filling in late diastole, so that diastolic pressures are elevated. Ele ...
Occurring During Cardiac Catheterization
... esophageal and other leads were recorded. The most frequent mechanism was retrograde conduction to the atria with varying degrees of V-A (ventriculo-atrial) block which occurred in 26 of the 38 patients. Runs of ventricular tachycardia with one-toone V-A conduction occurred in 13 patients. Runs with ...
... esophageal and other leads were recorded. The most frequent mechanism was retrograde conduction to the atria with varying degrees of V-A (ventriculo-atrial) block which occurred in 26 of the 38 patients. Runs of ventricular tachycardia with one-toone V-A conduction occurred in 13 patients. Runs with ...
Atrial Fibrillation Management: 2005
... • Isolation of pulmonary veins (triggers) and modification of substrate both important (wavelet mechanism) • New technique: left atrial ablation, wide area circumferential ablation, circumferential left atrial pulmonary vein ablation (Pappone, Morady, and others) • Increased success by isolating/enc ...
... • Isolation of pulmonary veins (triggers) and modification of substrate both important (wavelet mechanism) • New technique: left atrial ablation, wide area circumferential ablation, circumferential left atrial pulmonary vein ablation (Pappone, Morady, and others) • Increased success by isolating/enc ...
Elasticity-based determination of isovolumetric
... Background/Motivation: To directly determine isovolumetric cardiac time intervals by magnetic resonance elastography (MRE) using the magnitude of the complex signal for deducing morphological information combined with the phase of the complex signal for tension-relaxation measurements. Methods: Thir ...
... Background/Motivation: To directly determine isovolumetric cardiac time intervals by magnetic resonance elastography (MRE) using the magnitude of the complex signal for deducing morphological information combined with the phase of the complex signal for tension-relaxation measurements. Methods: Thir ...
Elasticity-based determination of isovolumetric phases in the human
... Background/Motivation: To directly determine isovolumetric cardiac time intervals by magnetic resonance elastography (MRE) using the magnitude of the complex signal for deducing morphological information combined with the phase of the complex signal for tension-relaxation measurements. Methods: Thir ...
... Background/Motivation: To directly determine isovolumetric cardiac time intervals by magnetic resonance elastography (MRE) using the magnitude of the complex signal for deducing morphological information combined with the phase of the complex signal for tension-relaxation measurements. Methods: Thir ...
King Saud University College of Pharmacy Pharmacology
... or ECG where each heart beat is displayed as a series of electrical waves characterized by peaks and valleys. An ECG gives two major kinds of information. First, by measuring time intervals on the ECG the duration of the electrical wave crossing the heart can be determined and consequently we can de ...
... or ECG where each heart beat is displayed as a series of electrical waves characterized by peaks and valleys. An ECG gives two major kinds of information. First, by measuring time intervals on the ECG the duration of the electrical wave crossing the heart can be determined and consequently we can de ...
The Heart_ Pressure-Propulsion Pump or Organ of Impedance?
... the basic tenets of circulation, such as the curious phenomenon of increase in cardiac output during aortic cross-clamp by up to 25% in a controlled experimental setting13 and, in some patients, during aortic surgery.14 The Fontan repair used for surgical correction of various hypoplastic right and ...
... the basic tenets of circulation, such as the curious phenomenon of increase in cardiac output during aortic cross-clamp by up to 25% in a controlled experimental setting13 and, in some patients, during aortic surgery.14 The Fontan repair used for surgical correction of various hypoplastic right and ...
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.