The Influence of Cardiac Trabeculae on Ventricular
... the ventricular wall. The myocardium is composed for about the 70% of its volume by parallel cardiac muscle cells, or myocytes, having a diameter which varies between 10 and 20 μm and a length that ranges between 80 and 100 μm. The fundamental contractile unit in the cardiomyocytes is the sarcomere, ...
... the ventricular wall. The myocardium is composed for about the 70% of its volume by parallel cardiac muscle cells, or myocytes, having a diameter which varies between 10 and 20 μm and a length that ranges between 80 and 100 μm. The fundamental contractile unit in the cardiomyocytes is the sarcomere, ...
Artifacts in ECG-Synchronized MDCT Coronary Angiography
... stenoses. Hence, it is important that observers reporting these investigations are aware of the potential presence of image artifacts and that these artifacts are recognized. CONCLUSION. The article explores the technical causes for various artifacts in MDCT coronary angiography imaging and clinical ...
... stenoses. Hence, it is important that observers reporting these investigations are aware of the potential presence of image artifacts and that these artifacts are recognized. CONCLUSION. The article explores the technical causes for various artifacts in MDCT coronary angiography imaging and clinical ...
Rate control in Atrial fibrillation Groenveld, Hessel Folkert
... Strict rate control is a challenging treatment strategy since it is difficult to achieve. The strict rate control approach used in AFFIRM was attained in about two thirds of the patients. Perhaps the assumed equality between lenient and strict rate control strategies regarding outcome is caused by t ...
... Strict rate control is a challenging treatment strategy since it is difficult to achieve. The strict rate control approach used in AFFIRM was attained in about two thirds of the patients. Perhaps the assumed equality between lenient and strict rate control strategies regarding outcome is caused by t ...
60 Years of Making Hearts Beat - Institut de Cardiologie de Montréal
... a year of well-deserved celebrations, the MHI held a gala in December 2013 that was attended by an unprecedented 1,300 staff members. This event was an amazing demonstration of the commitment of MHI doctors and employees to this institution they have helped grow and of the Quebec community’s dedicat ...
... a year of well-deserved celebrations, the MHI held a gala in December 2013 that was attended by an unprecedented 1,300 staff members. This event was an amazing demonstration of the commitment of MHI doctors and employees to this institution they have helped grow and of the Quebec community’s dedicat ...
Chapter 35 - Extras Springer
... RWMA does not establish the diagnosis of acute ischemia. However, the presence of an aneurysm and myocardial thinning suggests a previous ischemic event. For diagnosing acute coronary ischemia, echocardiography has a high sensitivity but a low specificity.29,30 In a large study,29 1017 patients with ...
... RWMA does not establish the diagnosis of acute ischemia. However, the presence of an aneurysm and myocardial thinning suggests a previous ischemic event. For diagnosing acute coronary ischemia, echocardiography has a high sensitivity but a low specificity.29,30 In a large study,29 1017 patients with ...
Pericardial Disease: Etiology, Pathophysiology
... by the European Society of Cardiology (ESC)1 and reports of large series from centers to which many patients with pericardial disease are referred. Pericardial heart disease is much less common than heart disease, originating with primary disorders of the coronary arteries, the myocardium, or the ca ...
... by the European Society of Cardiology (ESC)1 and reports of large series from centers to which many patients with pericardial disease are referred. Pericardial heart disease is much less common than heart disease, originating with primary disorders of the coronary arteries, the myocardium, or the ca ...
Tbx1 regulates fibroblast growth factors in the anterior heart field
... Fig. 2. Cardiovascular and thymic defects in Tbx1 hypomorphic mutant neonates. Frontal views of heart and vessels in Tbx1 hypomorphic heterozygous (Tbx1neo/+) neonates (B-D), and in Tbx1 hypomorphic homozygous (Tbx1neo/neo) neonates (E-H). (A) Wild-type neonate with thymus removed to illustrate norm ...
... Fig. 2. Cardiovascular and thymic defects in Tbx1 hypomorphic mutant neonates. Frontal views of heart and vessels in Tbx1 hypomorphic heterozygous (Tbx1neo/+) neonates (B-D), and in Tbx1 hypomorphic homozygous (Tbx1neo/neo) neonates (E-H). (A) Wild-type neonate with thymus removed to illustrate norm ...
Simvastatin Modulates Remodeling of Kv4.3 Expression in Rat
... © Ivyspring International Publisher. This is an open-access article distributed under the terms of the Creative Commons License (http://creativecommons.org/ licenses/by-nc-nd/3.0/). Reproduction is permitted for personal, noncommercial use, provided that the article is in whole, unmodified, and prop ...
... © Ivyspring International Publisher. This is an open-access article distributed under the terms of the Creative Commons License (http://creativecommons.org/ licenses/by-nc-nd/3.0/). Reproduction is permitted for personal, noncommercial use, provided that the article is in whole, unmodified, and prop ...
Surgical removal of a large mobile left ventricular thrombus via left
... function[6], and should be avoided in cases of poor LV function if possible. Furthermore, if once the left ventriculotomy was performed, future placement of the ventricular assist device in case of further deterioration of the LV function would be more complicated. Another possible approach is throm ...
... function[6], and should be avoided in cases of poor LV function if possible. Furthermore, if once the left ventriculotomy was performed, future placement of the ventricular assist device in case of further deterioration of the LV function would be more complicated. Another possible approach is throm ...
Quantification of 3-D regional myocardial
... matrix representing the confidence in the original shapetracking-derived nodal displacements Ue (where available), and U is the nodal displacement vector field, which we are trying to estimate. This equation is solved to find the displacement field U, which can then be differentiated to compute stra ...
... matrix representing the confidence in the original shapetracking-derived nodal displacements Ue (where available), and U is the nodal displacement vector field, which we are trying to estimate. This equation is solved to find the displacement field U, which can then be differentiated to compute stra ...
Pertussis Toxin-Insensitive Phosphoinositide Hydrolysis, Membrane
... constant current pulses through the tissue. This experimental setup and its limitations have been described in a report from this laboratory.l9 Assuming that internal longitudinal resistance is constant, the change in electronic potential produced by a drug in response to a constant current pulse yi ...
... constant current pulses through the tissue. This experimental setup and its limitations have been described in a report from this laboratory.l9 Assuming that internal longitudinal resistance is constant, the change in electronic potential produced by a drug in response to a constant current pulse yi ...
Impaired myocardial capillarogenesis and increased
... with a random start. Three slices of the left ventricle were selected by area-weighted sampling and processed according to the orientator method.31,32 Stereological analysis was performed on 12 random samples of differently orientated sections of the left ventricular myocardium including the inter v ...
... with a random start. Three slices of the left ventricle were selected by area-weighted sampling and processed according to the orientator method.31,32 Stereological analysis was performed on 12 random samples of differently orientated sections of the left ventricular myocardium including the inter v ...
2014 ESC Guidelines on diagnosis and management
... Disclaimer: The ESC Guidelines represent the views of the ESC and were produced after careful consideration of the scientific and medical knowledge and the evidence available at the time of their dating. The ESC is not responsible in the event of any contradiction, discrepancy and/or ambiguity betwe ...
... Disclaimer: The ESC Guidelines represent the views of the ESC and were produced after careful consideration of the scientific and medical knowledge and the evidence available at the time of their dating. The ESC is not responsible in the event of any contradiction, discrepancy and/or ambiguity betwe ...
Doppler Tissue Imaging for the Assessment of Left Ventricular
... The assessment of LV filling pressures such as left atrial pressure (LAP) and its surrogate, pulmonary capillary wedge pressure (PCWP), is of great importance to the clinician. If filling pressures are high, this may be an indication that dyspnea may be caused in part by pulmonary congestion. If fil ...
... The assessment of LV filling pressures such as left atrial pressure (LAP) and its surrogate, pulmonary capillary wedge pressure (PCWP), is of great importance to the clinician. If filling pressures are high, this may be an indication that dyspnea may be caused in part by pulmonary congestion. If fil ...
National Medical Policy
... necessary, on an exceptional case by case basis, for surgical treatment planning of a complex surgical cardiac procedure, when the information produced from the 3D echocardiogram cannot be provided by a traditional 2D echocardiogram, or other testing (e.g. magnetic resonance imaging of the heart, Do ...
... necessary, on an exceptional case by case basis, for surgical treatment planning of a complex surgical cardiac procedure, when the information produced from the 3D echocardiogram cannot be provided by a traditional 2D echocardiogram, or other testing (e.g. magnetic resonance imaging of the heart, Do ...
Heart Disease - John Appleton
... a heart attack or stroke at any moment. And that’s understandable. After all, it’s your heart we’re talking about—you can’t live without it. The statistics certainly aren’t going to help your outlook, either. You may have heard that cardiovascular disease (CVD) is the number one killer of both men a ...
... a heart attack or stroke at any moment. And that’s understandable. After all, it’s your heart we’re talking about—you can’t live without it. The statistics certainly aren’t going to help your outlook, either. You may have heard that cardiovascular disease (CVD) is the number one killer of both men a ...
Andropoulos Chapter
... Although inhaled anesthetics can be safely used for many patients undergoing PDA ligation, neonates are prone to hemodynamic instability with exposure to inhaled anesthetics and benefit from an intravenous anesthetic technique using opioids such as fentanyl and possibly a benzodiazepine along with m ...
... Although inhaled anesthetics can be safely used for many patients undergoing PDA ligation, neonates are prone to hemodynamic instability with exposure to inhaled anesthetics and benefit from an intravenous anesthetic technique using opioids such as fentanyl and possibly a benzodiazepine along with m ...
Mechanical Interactions between Four Heart Chambers with and
... from leaking from the pericardial space. One cannula was connected to a pressure transducer and the other to the infusion pump. Eleven hearts thus were successfully prepared. ...
... from leaking from the pericardial space. One cannula was connected to a pressure transducer and the other to the infusion pump. Eleven hearts thus were successfully prepared. ...
Frequently Asked Questions About AEDs
... fibrillation and fast ventricular tachycardia. The electric current is delivered through the victim's chest wall through adhesive electrode pads. 4. Why are AEDs important? AEDs are important because they strengthen the Chain of Survival. They can restore a normal heart rhythm in victims of sudden c ...
... fibrillation and fast ventricular tachycardia. The electric current is delivered through the victim's chest wall through adhesive electrode pads. 4. Why are AEDs important? AEDs are important because they strengthen the Chain of Survival. They can restore a normal heart rhythm in victims of sudden c ...
Two components of delayed rectifier K+ current in heart: molecular
... (KCNQ1), and a function-altering β subunit, minK (KCNE1)[29,30]. An N-terminal truncated isoform of the KvLQT1 gene product (isoform 2) has been identified in the human adult ventricle (with an amount of 28 % of total KvLQT1 expression)[31]. The isoform 2 exerts a pronounced dominant negative effect ...
... (KCNQ1), and a function-altering β subunit, minK (KCNE1)[29,30]. An N-terminal truncated isoform of the KvLQT1 gene product (isoform 2) has been identified in the human adult ventricle (with an amount of 28 % of total KvLQT1 expression)[31]. The isoform 2 exerts a pronounced dominant negative effect ...
The protective effects of a phosphodiesterase 5 inhibitor
... perfused with Ringer’s solution in situ for 45 minutes before baseline measurements were taken, and a constant flow was maintained (2.5 μl/min) using a microdialysis pump (CMA106; Microdialysis AB) [14] (Figure 2). The dialysate was collected by using a dialysate collector (CMA142; Microdialysis ...
... perfused with Ringer’s solution in situ for 45 minutes before baseline measurements were taken, and a constant flow was maintained (2.5 μl/min) using a microdialysis pump (CMA106; Microdialysis AB) [14] (Figure 2). The dialysate was collected by using a dialysate collector (CMA142; Microdialysis ...
Anderson 2014 Cochrane Overview
... Many definitions of cardiac rehabilitation (CR) have been proposed. The following definition encompasses the key concepts of CR: “The coordinated sum of activities required to influence favourably the underlying cause of cardiovascular disease, as well as to provide the best possible physical, menta ...
... Many definitions of cardiac rehabilitation (CR) have been proposed. The following definition encompasses the key concepts of CR: “The coordinated sum of activities required to influence favourably the underlying cause of cardiovascular disease, as well as to provide the best possible physical, menta ...
Heart Sounds Detecting and Analyzing Heart Murmurs
... • B) a saturation of 89% in an otherwise asymptomatic child with no murmurs • C) poor pulses and mottled skin in a distressed infant with no murmurs Which is least likely to have hemodynamically significant cardiac disease? ...
... • B) a saturation of 89% in an otherwise asymptomatic child with no murmurs • C) poor pulses and mottled skin in a distressed infant with no murmurs Which is least likely to have hemodynamically significant cardiac disease? ...
Cardiac rehabilitation for people with heart disease
... Many definitions of cardiac rehabilitation (CR) have been proposed. The following definition encompasses the key concepts of CR: “The coordinated sum of activities required to influence favourably the underlying cause of cardiovascular disease, as well as to provide the best possible physical, menta ...
... Many definitions of cardiac rehabilitation (CR) have been proposed. The following definition encompasses the key concepts of CR: “The coordinated sum of activities required to influence favourably the underlying cause of cardiovascular disease, as well as to provide the best possible physical, menta ...
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.