The Heart
... From the right atrium, blood flows into the right ventricle of the heart. From there it is pumped through the pulmonary arteries {pulmo, lung} to the lungs, where it is oxygenated. Note the color change from blue to red in Figure 14.1, indicating higher oxygen content after the blood leaves the lung ...
... From the right atrium, blood flows into the right ventricle of the heart. From there it is pumped through the pulmonary arteries {pulmo, lung} to the lungs, where it is oxygenated. Note the color change from blue to red in Figure 14.1, indicating higher oxygen content after the blood leaves the lung ...
Circulation Research AUGUST
... Myocardial oxygen consumption (MVo2) during drug-induced cardiac depression was measured in 8 anesthetized, open chest dogs in which myocardial wall tension was controlled. The right side of the heart was bypassed and myocardial contractility was reduced with procaine HC1, propranolol, or pronethalo ...
... Myocardial oxygen consumption (MVo2) during drug-induced cardiac depression was measured in 8 anesthetized, open chest dogs in which myocardial wall tension was controlled. The right side of the heart was bypassed and myocardial contractility was reduced with procaine HC1, propranolol, or pronethalo ...
Utility of Right Ventricular Strain Imaging in Predicting Pulmonary
... The primary abnormality in pulmonary hypertension is the increased afterload on the right ventricle due to elevated pulmonary vascular resistance (PVR) caused by the remodeling of the resistance pulmonary arteries. A large number of studies have clearly demonstrated that it is cardiac function that ...
... The primary abnormality in pulmonary hypertension is the increased afterload on the right ventricle due to elevated pulmonary vascular resistance (PVR) caused by the remodeling of the resistance pulmonary arteries. A large number of studies have clearly demonstrated that it is cardiac function that ...
Noninvasive Assessment of Myocardial Composition
... conditions is an important compensatory mechanism that tends to minimize abnormalities in myocardial stress related to the inciting load.4 However, recent See p 925 studies have indicated that hypertrophied muscle differs from normal muscle in many respects, including its structure, mechanical prope ...
... conditions is an important compensatory mechanism that tends to minimize abnormalities in myocardial stress related to the inciting load.4 However, recent See p 925 studies have indicated that hypertrophied muscle differs from normal muscle in many respects, including its structure, mechanical prope ...
Independence of Myocardial Oxygen Consumption from Pressure
... by the environment on the ventricle during diastole. The net external mechanical work output is therefore equal to the external mechanical work performed during systole, minus the mechanical work paid back from outside to the ventricle during diastole. This net work is represented by the area within ...
... by the environment on the ventricle during diastole. The net external mechanical work output is therefore equal to the external mechanical work performed during systole, minus the mechanical work paid back from outside to the ventricle during diastole. This net work is represented by the area within ...
Role of the Posterior Left Atrium and Pulmonary Veins
... Conclusions—Total electrical isolation of the PVR controlled AF with excellent clinical outcome and appeared necessary for success. The isolated PVR can sustain spontaneous or induced AF, whereas the considerably larger RAR does not. These data provide a sound rationale for PVR in eliminating AF. (C ...
... Conclusions—Total electrical isolation of the PVR controlled AF with excellent clinical outcome and appeared necessary for success. The isolated PVR can sustain spontaneous or induced AF, whereas the considerably larger RAR does not. These data provide a sound rationale for PVR in eliminating AF. (C ...
Ventricular arrhythmias
... puncture, Heparin to ACT of 280-350 12 F Stearable sheath (FlexCath) Stearable over the wire double lumen balloon catheter (Arctiv Front: 23-28 mm) Occlusion of each PV, freezing for 300 sec x 2. (temperature -40 to -60 C) Pacing w high output in SVC to capture phrenic nerve while freezing on the ri ...
... puncture, Heparin to ACT of 280-350 12 F Stearable sheath (FlexCath) Stearable over the wire double lumen balloon catheter (Arctiv Front: 23-28 mm) Occlusion of each PV, freezing for 300 sec x 2. (temperature -40 to -60 C) Pacing w high output in SVC to capture phrenic nerve while freezing on the ri ...
Cardiogenic Shock
... papillary muscle function is vital in ensuring that the two mitral valve leaflets close completely to prevent leakage or regurgitation of blood backwards into the left atrium. Papillary muscle rupture is a term used somewhat erroneously; rupture and avulsion of the entire papillary muscle usually re ...
... papillary muscle function is vital in ensuring that the two mitral valve leaflets close completely to prevent leakage or regurgitation of blood backwards into the left atrium. Papillary muscle rupture is a term used somewhat erroneously; rupture and avulsion of the entire papillary muscle usually re ...
Targeting Reactive Oxygen Species Production To Prevent Left
... Mechanisms of left ventricular dysfunction in cardiac volume overload (VO) are not well understood and currently, no medical therapy exists to treat this condition. Cardiac VO is marked by eccentric remodeling and contractile dysfunction ultimately resulting in cardiac failure. Oxidative stress is i ...
... Mechanisms of left ventricular dysfunction in cardiac volume overload (VO) are not well understood and currently, no medical therapy exists to treat this condition. Cardiac VO is marked by eccentric remodeling and contractile dysfunction ultimately resulting in cardiac failure. Oxidative stress is i ...
Correlation of the Tei Index With Left Ventricular Dilatation - J
... lower whereas ICT was significantly longer in patients with myocardial infarction compared with healthy individuals. In accordance with these results, the Tei index and both systolic and diastolic left ventricular diameters were higher in patients with myocardial infarction compared with the healthy ...
... lower whereas ICT was significantly longer in patients with myocardial infarction compared with healthy individuals. In accordance with these results, the Tei index and both systolic and diastolic left ventricular diameters were higher in patients with myocardial infarction compared with the healthy ...
Transcatheter Aortic Valve Replacement: A Review Article Juan A
... valve, CoreValve could be delivered via the transfemoral or transaortic routes; to do so, it utilizes the AccuTrak delivery catheter (Medtronic). However, unlike the SAPIEN valve, CoreValve could be transported via the subclavian artery in case of extensive peripheral artery diseases that affect fem ...
... valve, CoreValve could be delivered via the transfemoral or transaortic routes; to do so, it utilizes the AccuTrak delivery catheter (Medtronic). However, unlike the SAPIEN valve, CoreValve could be transported via the subclavian artery in case of extensive peripheral artery diseases that affect fem ...
the Transcript - UPMC Physician Resources
... The other thing I want to point out to you is if you work in the emergency room you think everybody with sickle cell is always coming in pain and always using narcotics and suffering and 70% of sickle patients hardly ever come to the hospital. They’re managing their pain at home, they’re coming to t ...
... The other thing I want to point out to you is if you work in the emergency room you think everybody with sickle cell is always coming in pain and always using narcotics and suffering and 70% of sickle patients hardly ever come to the hospital. They’re managing their pain at home, they’re coming to t ...
Single Ventricle Palliation: Stage One Reconstruction
... – MBTS: afterload reduction, vasopressors for DBP, manipulation of ventilation – RVPAS: maintain RVEF for PBF, inotrope, volume, HR control Migliavacca F et al. Modeling of the Norwood circulation: effectsof shunt size, vascular resistances and heart rate. Am J Physiol Heart Circ Physiol. ...
... – MBTS: afterload reduction, vasopressors for DBP, manipulation of ventilation – RVPAS: maintain RVEF for PBF, inotrope, volume, HR control Migliavacca F et al. Modeling of the Norwood circulation: effectsof shunt size, vascular resistances and heart rate. Am J Physiol Heart Circ Physiol. ...
Constrictive Pericarditis Presenting as Unexplained Dyspnea With
... spectively analyzed 30 patients who presented with constrictive pericarditis, and found that 60% (18 patients) had pleural effusion. Bilateral and symmetrical effusions were found in 12 patients, and the remaining 6 had unilateral pleural fluid: 3 had right-side effusion and 3 had left-side effusion ...
... spectively analyzed 30 patients who presented with constrictive pericarditis, and found that 60% (18 patients) had pleural effusion. Bilateral and symmetrical effusions were found in 12 patients, and the remaining 6 had unilateral pleural fluid: 3 had right-side effusion and 3 had left-side effusion ...
Timely Pulmonary Valve Replacement May Allow Preservation of
... The right ventricle (RV) in patients with Tetralogy of Fallot (TOF) is at risk for progressive dilation secondary to pulmonary regurgitation. This may lead to an impairment of left ventricular (LV) mechanics, especially to a reduction in LV circumferential and radial strain, even in asymptomatic chi ...
... The right ventricle (RV) in patients with Tetralogy of Fallot (TOF) is at risk for progressive dilation secondary to pulmonary regurgitation. This may lead to an impairment of left ventricular (LV) mechanics, especially to a reduction in LV circumferential and radial strain, even in asymptomatic chi ...
Recent Studies in the Pre-Excitation Syndrome
... third and second RA electrograms having a shorter cycle length than that between the first two RA electrograms. Premature atrial beats are normally conducted with an increased conduction time through the A-V node. If the conduction time over the accessory pathway does not increase, or increases less ...
... third and second RA electrograms having a shorter cycle length than that between the first two RA electrograms. Premature atrial beats are normally conducted with an increased conduction time through the A-V node. If the conduction time over the accessory pathway does not increase, or increases less ...
The Mechanics of Left Ventricular Contraction in Acute
... some of the findings have been presented in preliminary form (5). The present studies were undertaken to examine in detail the effects of acute, drug-induced cardiac failure on the pattern of left ventricular contraction during normal (auxotonic) and isovolumic beats and to define the influence on s ...
... some of the findings have been presented in preliminary form (5). The present studies were undertaken to examine in detail the effects of acute, drug-induced cardiac failure on the pattern of left ventricular contraction during normal (auxotonic) and isovolumic beats and to define the influence on s ...
Jugular Venous Pulse: Window into the Right Heart
... angles of positioning, the average distance varied between 8 and 10 cm.23 Therefore, adding 5 cm H20 to the vertical distance measured on physical examination may be an accurate estimation of jugular venous pressure for patients in the supine position; however, when the head is elevated, this method ...
... angles of positioning, the average distance varied between 8 and 10 cm.23 Therefore, adding 5 cm H20 to the vertical distance measured on physical examination may be an accurate estimation of jugular venous pressure for patients in the supine position; however, when the head is elevated, this method ...
PDF - SAS Publishers
... flow through its fenestration (ostium secundum) from the right atrium to the left atrium. Foramen ovale is a slit like opening in the atrial septum at the site of foramen secundum of the septum primum. The septum secundum surrounds the foramen secundum in a crescentic shape and leaves a slit-like op ...
... flow through its fenestration (ostium secundum) from the right atrium to the left atrium. Foramen ovale is a slit like opening in the atrial septum at the site of foramen secundum of the septum primum. The septum secundum surrounds the foramen secundum in a crescentic shape and leaves a slit-like op ...
Dobutamine stress echo-induced apical ballooning (Takotsubo
... series, it commonly affects post-menopausal women, with an average age range of 62–75 years, although it has been reported in individuals aged 10–91 years.8 It commonly presents with chest pain (68%), although it may present with shortness of breath (20%), cardiogenic shock (4%), or ventricular arrh ...
... series, it commonly affects post-menopausal women, with an average age range of 62–75 years, although it has been reported in individuals aged 10–91 years.8 It commonly presents with chest pain (68%), although it may present with shortness of breath (20%), cardiogenic shock (4%), or ventricular arrh ...
Ventricular stroke work and efficiency both remain nearly optimal
... of maximal external work, whereas the opposite appears the case in normal hearts (1, 19). Therapeutic interventions such as vasodilator therapy can thus be viewed with respect to their capacity to improve efficiency (9, 14, 15). This notion is appealing, particularly if energy delivery to the heart ...
... of maximal external work, whereas the opposite appears the case in normal hearts (1, 19). Therapeutic interventions such as vasodilator therapy can thus be viewed with respect to their capacity to improve efficiency (9, 14, 15). This notion is appealing, particularly if energy delivery to the heart ...
abnormal curves in terms of the pathological conditions with which
... in each heart beat during normal complete respiratory cycles, and the results averaged. Mean pressures were determined by planimetric integration. The data from arterial pressure records include average maximum (systolic), average minimum (diastolic), and mean pressures. For the auricle, only mean p ...
... in each heart beat during normal complete respiratory cycles, and the results averaged. Mean pressures were determined by planimetric integration. The data from arterial pressure records include average maximum (systolic), average minimum (diastolic), and mean pressures. For the auricle, only mean p ...
The use of isovolumic contraction velocity to determine right
... ventricular filling pressures Isovolumic contraction velocity measured from base and mid cavity level correlated significantly with right ventricular end diastolic pressure (r Z ÿ0.47 and r Z ÿ0.49, p ! 0.05, for both, Fig. 4). We also found a relation between right atrial mean pressure and isovolum ...
... ventricular filling pressures Isovolumic contraction velocity measured from base and mid cavity level correlated significantly with right ventricular end diastolic pressure (r Z ÿ0.47 and r Z ÿ0.49, p ! 0.05, for both, Fig. 4). We also found a relation between right atrial mean pressure and isovolum ...
Arrythmia_2014 - University of Washington
... heart failure Acute or chronic Are they sleeping? Do they have sleep apnea? Not everyone with bradycardia, even complete heart ...
... heart failure Acute or chronic Are they sleeping? Do they have sleep apnea? Not everyone with bradycardia, even complete heart ...
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.