Right Ventricular Failure in Idiopathic Pulmonary Arterial - VU-dare
... Background—In idiopathic pulmonary arterial hypertension (IPAH), increased right ventricular (RV) power is required to maintain cardiac output. For this, RV O2 consumption (MVO2) must increase by augmentation of O2 supply and/or improvement of mechanical efficiency–ratio of power output to MVO2. In ...
... Background—In idiopathic pulmonary arterial hypertension (IPAH), increased right ventricular (RV) power is required to maintain cardiac output. For this, RV O2 consumption (MVO2) must increase by augmentation of O2 supply and/or improvement of mechanical efficiency–ratio of power output to MVO2. In ...
Length-Circumference Relations of the Left Ventricle
... recorded by variable resistance gages consisting of delicate rubber tubing (0.016* I.D. and 0.030* O.D.) filled with mercury and sealed at each end with insulated wires. These gages are similar to those employed by Whitney for plethysmography.8 Lengthening of the gage reduces the cross-sectional are ...
... recorded by variable resistance gages consisting of delicate rubber tubing (0.016* I.D. and 0.030* O.D.) filled with mercury and sealed at each end with insulated wires. These gages are similar to those employed by Whitney for plethysmography.8 Lengthening of the gage reduces the cross-sectional are ...
Electrophysiology Circulation: Arrhythmia &
... Low atrial fibrillatory rate is associated with poor outcome in patients with mild to moderate ...
... Low atrial fibrillatory rate is associated with poor outcome in patients with mild to moderate ...
Pulmonary Hypertension, Right Ventricular Function, and Clinical
... http://dx.doi.org/10.1016/j.cardfail.2013.08.007 ...
... http://dx.doi.org/10.1016/j.cardfail.2013.08.007 ...
effects of acute ischaemia induced by atrial pacing on coronary
... sumption was increased by two manoeuvres. Firstly atrial pacing was perfomed using a bipolar electrode placed on the left atrial appendage and connected to a pacemaker capable of increasing the heart rate at increments of 30 beats between 210 and 300 beats per minute. Secondly an isoprenaline infusi ...
... sumption was increased by two manoeuvres. Firstly atrial pacing was perfomed using a bipolar electrode placed on the left atrial appendage and connected to a pacemaker capable of increasing the heart rate at increments of 30 beats between 210 and 300 beats per minute. Secondly an isoprenaline infusi ...
Department of Cardiothoracic Surgery
... were treated with a success rate of 3% (European benchmark of 4.5% and complexity matching mean European Aristotle complexity. Complication rate for children was 21%). Particularly encouraging are results for neonatal surgery – mortality of 8.2% comparing favourably to European (10.3 %), mostly beca ...
... were treated with a success rate of 3% (European benchmark of 4.5% and complexity matching mean European Aristotle complexity. Complication rate for children was 21%). Particularly encouraging are results for neonatal surgery – mortality of 8.2% comparing favourably to European (10.3 %), mostly beca ...
Formation of the Cardiac Loop
... Common Congenital Anomalies Etiologic factors: 1. Disorders of chromosome numbers eg. trisomy 21, 18 or 13 2. Familial disorders ...
... Common Congenital Anomalies Etiologic factors: 1. Disorders of chromosome numbers eg. trisomy 21, 18 or 13 2. Familial disorders ...
ASD, Ostium secundum
... There is medial hypertrophy and marked intimal hyperplasia of this muscular pulmonary artery. These changes are the morphologic response to increased pulmonary vascular pressures, such as may be seen in patients with chronic obstructive lung disease, pulmonary thromboembolism, or left-sided heart d ...
... There is medial hypertrophy and marked intimal hyperplasia of this muscular pulmonary artery. These changes are the morphologic response to increased pulmonary vascular pressures, such as may be seen in patients with chronic obstructive lung disease, pulmonary thromboembolism, or left-sided heart d ...
Battery Status Information for Boston Scientific Pacemakers and
... Read the product labeling thoroughly before implanting the pulse generator to avoid damage to the system. For single patient use only. Do not reuse, reprocess, or resterilize. Program the pulse generator Tachy Mode to Off during implant, explant or postmortem procedures. Always have external defibri ...
... Read the product labeling thoroughly before implanting the pulse generator to avoid damage to the system. For single patient use only. Do not reuse, reprocess, or resterilize. Program the pulse generator Tachy Mode to Off during implant, explant or postmortem procedures. Always have external defibri ...
Cardiomyopathies and Myocarditides
... • A presumptive diagnosis of myocarditis may be made on the basis of the clinical and laboratory presentations • This presumption may be strengthened if an echocardiogram is characteristic and does not reveal evidence of other forms of heart disease • A number of other tests have been used in selec ...
... • A presumptive diagnosis of myocarditis may be made on the basis of the clinical and laboratory presentations • This presumption may be strengthened if an echocardiogram is characteristic and does not reveal evidence of other forms of heart disease • A number of other tests have been used in selec ...
VeriCor, left ventricular end diastolic pressure
... were followed up for the occurrence of death or worsening heart failure requiring hospitalization or emergent care. During the study, 59 patients experienced 104 episodes of decompensated heart failure: 16 deaths, 78 hospitalizations, and 10 emergency visits. A composite score of 3 ICG parameters wa ...
... were followed up for the occurrence of death or worsening heart failure requiring hospitalization or emergent care. During the study, 59 patients experienced 104 episodes of decompensated heart failure: 16 deaths, 78 hospitalizations, and 10 emergency visits. A composite score of 3 ICG parameters wa ...
The atrioventricular node: origin, development and - UvA-DARE
... conduction axis, which consists of the AV node, AV bundle and bundle branches, and is connected to the Purkinje fiber network of the ventricles. Its function is to transmit the electrical impulse from the atria to the ventricles. An important property of the AV node is slow propagation of the impuls ...
... conduction axis, which consists of the AV node, AV bundle and bundle branches, and is connected to the Purkinje fiber network of the ventricles. Its function is to transmit the electrical impulse from the atria to the ventricles. An important property of the AV node is slow propagation of the impuls ...
Alcoholic Cardiomyopathy: Clinical and Molecular Findings
... changes. These changes fall into the following categories: myocyte loss, intracellular organelle dysfunction, contractile proteins, and calcium homeostasis. These changes can alter several aspects of myocyte function and therefore may lead to myocyte dysfunction. This may represent the primary injur ...
... changes. These changes fall into the following categories: myocyte loss, intracellular organelle dysfunction, contractile proteins, and calcium homeostasis. These changes can alter several aspects of myocyte function and therefore may lead to myocyte dysfunction. This may represent the primary injur ...
Pressure overload alters stress-strain properties of the developing
... Green-Lagrangian strain tensor (Eij) (32). With z as the long axis of the tissue section, x as the width, and y as the height, the surface strains were Ezz, Exx, and Ezx. Principal strains were also calculated. The calculated strain is homogeneous within the triangle. The remaining data analysis was ...
... Green-Lagrangian strain tensor (Eij) (32). With z as the long axis of the tissue section, x as the width, and y as the height, the surface strains were Ezz, Exx, and Ezx. Principal strains were also calculated. The calculated strain is homogeneous within the triangle. The remaining data analysis was ...
Special At*tide Some Controversial Cardiovascular Reflexes
... triad of cardiac slowing or arrest, hypotension, and apnea. The effects are entirely reflex in nature, arising from t^e lungs (for the apnea) and heart (for the circulatory depression). The exact location of the cardiac receptors is still uncertain, but they definitely are accessible by means of the ...
... triad of cardiac slowing or arrest, hypotension, and apnea. The effects are entirely reflex in nature, arising from t^e lungs (for the apnea) and heart (for the circulatory depression). The exact location of the cardiac receptors is still uncertain, but they definitely are accessible by means of the ...
Comprehensive T Wave Morphology Assessment
... subjects between 18 and 35 years old, weighing between 50 and 85 kg and without a family history of cardiovascular disease or unexplained sudden cardiac death were eligible for participation in the study. In addition, the subjects had to have fewer than 12 ventricular ectopic beats during a 3-hour c ...
... subjects between 18 and 35 years old, weighing between 50 and 85 kg and without a family history of cardiovascular disease or unexplained sudden cardiac death were eligible for participation in the study. In addition, the subjects had to have fewer than 12 ventricular ectopic beats during a 3-hour c ...
Full Text - Res Cardiovasc Med
... by anchoring a patch using either a continuous or an interrupted suture. During this maneuver, traction and tension are needed in order to obtain good surgical exposure. The conduction system, specifically the bundle of His and its branches, is usually closely related to some part of the border of t ...
... by anchoring a patch using either a continuous or an interrupted suture. During this maneuver, traction and tension are needed in order to obtain good surgical exposure. The conduction system, specifically the bundle of His and its branches, is usually closely related to some part of the border of t ...
BME lecture 6 - pv loops (Sept 14, 2004)
... Figure 6-2. Illustration of key landmarks for the left ventricular pressure-volume relationship. The PV loops are generated by performing a vena cava occlusion to reduce pre-load to the heart. The slope of the line tangent to the PV loop at end-systole is called the End-Systolic Pressure Volume Rela ...
... Figure 6-2. Illustration of key landmarks for the left ventricular pressure-volume relationship. The PV loops are generated by performing a vena cava occlusion to reduce pre-load to the heart. The slope of the line tangent to the PV loop at end-systole is called the End-Systolic Pressure Volume Rela ...
Cardiac Magnetic Resonance Imaging and Computed Tomography
... biomarkers, and risk-scoring systems help to predict which of these patients require urgent coronary angiography. In patients with acute coronary syndromes not indicated for emergent angiography, and those patients with progressive luminal narrowing, non-invasive imaging techniques are important too ...
... biomarkers, and risk-scoring systems help to predict which of these patients require urgent coronary angiography. In patients with acute coronary syndromes not indicated for emergent angiography, and those patients with progressive luminal narrowing, non-invasive imaging techniques are important too ...
GOALS: HYPERTENSION Rx
... Combinationsingle tablet to BP: Benazepril/Amlodipine vs. Benazepril/hydrochlorothiazide. Benazepril/Amlodipine reported to reduce CV morbidity and mortality 20% in comparison. Note contrast to ALLHAT results. Is such a combination just marketing? *American College of Cardiology, Mar. 2008. ...
... Combinationsingle tablet to BP: Benazepril/Amlodipine vs. Benazepril/hydrochlorothiazide. Benazepril/Amlodipine reported to reduce CV morbidity and mortality 20% in comparison. Note contrast to ALLHAT results. Is such a combination just marketing? *American College of Cardiology, Mar. 2008. ...
Diastolic Heart Failure - American Academy of Family Physicians
... of patients with systolic heart failure. These observations emphasize diastolic heart failure as an important contributor to morbidity, mortality, and health care costs, and highlight the need for further research and clinical trials examining this condition. Pathophysiology Diastole is the process ...
... of patients with systolic heart failure. These observations emphasize diastolic heart failure as an important contributor to morbidity, mortality, and health care costs, and highlight the need for further research and clinical trials examining this condition. Pathophysiology Diastole is the process ...
Non-invasive detection of conduction pathways
... of atrial complex, representing early RA activation, was mostly leftward down, with a mean angle of 438 (CSD 288). Over the time interval of 40–70 ms from the onset of the atrial complex, the mean angle was 398 (CSD 308). Over the time interval of last 50% of atrial complex, the mean angle was 38 (C ...
... of atrial complex, representing early RA activation, was mostly leftward down, with a mean angle of 438 (CSD 288). Over the time interval of 40–70 ms from the onset of the atrial complex, the mean angle was 398 (CSD 308). Over the time interval of last 50% of atrial complex, the mean angle was 38 (C ...
Cardiac Channelopathies and Sudden Death: Recent Clinical and
... pattern (with baseline type II or III pattern) in at least one right precordial lead (V1 or V2) should be considered sufficient for a definitive diagnosis of BrS [27]. This pattern may be spontaneous or induced by a pharmacological test using Class I antiarrhythmic drugs (AAD) [22]. Types II and III ...
... pattern (with baseline type II or III pattern) in at least one right precordial lead (V1 or V2) should be considered sufficient for a definitive diagnosis of BrS [27]. This pattern may be spontaneous or induced by a pharmacological test using Class I antiarrhythmic drugs (AAD) [22]. Types II and III ...
Noninvasive epicardial and endocardial mapping of premature
... dia (VT). All patients underwent pre-procedural computed tomography or magnetic resonance imaging of the heart and torso. Radiographic data were semi-automatically processed by the NEEES to reconstruct a realistic 3D model of the heart and torso. In the electrophysiology laboratory, body-surface ele ...
... dia (VT). All patients underwent pre-procedural computed tomography or magnetic resonance imaging of the heart and torso. Radiographic data were semi-automatically processed by the NEEES to reconstruct a realistic 3D model of the heart and torso. In the electrophysiology laboratory, body-surface ele ...
A Case of Mirror Image Dextrocardia with Ostium Secundum Atrial
... (44%), and discordant ventriculo-atrial (VA) connection ...
... (44%), and discordant ventriculo-atrial (VA) connection ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.