Reduced inotropic heart response in selenium-deficient - AJP
... could be a direct interaction between NO and catecholamines because Klatt et al. (26) have presented evidence that NO can cause an oxidative inactivation and degradation of Iso in adipocyte cultures (26). However, there is no conclusive evidence that this process plays any role in vivo (26). In pion ...
... could be a direct interaction between NO and catecholamines because Klatt et al. (26) have presented evidence that NO can cause an oxidative inactivation and degradation of Iso in adipocyte cultures (26). However, there is no conclusive evidence that this process plays any role in vivo (26). In pion ...
Posterior Pericardial Ascending-to-Descending Aortic
... septal myectomy, mitral valve replacement, aortoplasty, subaortic stenosis resection, ventricular septal defect closure, and ascending aorta replacement in 1 patient each. All patients survived the operation and were alive with patent CoA bypass at a mean follow-up of 45 months. No graft-related com ...
... septal myectomy, mitral valve replacement, aortoplasty, subaortic stenosis resection, ventricular septal defect closure, and ascending aorta replacement in 1 patient each. All patients survived the operation and were alive with patent CoA bypass at a mean follow-up of 45 months. No graft-related com ...
Asymmetrical Dimethylarginine in Idiopathic Pulmonary Arterial
... important role in regulation of NOS activity.24 A relevant role of ADMA in the pathogenesis of IPAH could derive from reduced activity of DDAH with increasing severity of the disease, eventually as a result of increased oxidant stress as well as hypoxia.9 This assumption is corroborated by findings ...
... important role in regulation of NOS activity.24 A relevant role of ADMA in the pathogenesis of IPAH could derive from reduced activity of DDAH with increasing severity of the disease, eventually as a result of increased oxidant stress as well as hypoxia.9 This assumption is corroborated by findings ...
Heart Rate Monitoring and PQRST Detection Based on
... broad at lower frequencies, which leads to an optimal timefrequency resolution in all frequency ranges. [13] Difference Operation Method (DOM) is used for detecting the QRS complex of an electrocardiogram signal, this technique includes two processes, one is the difference operation process (DOP) an ...
... broad at lower frequencies, which leads to an optimal timefrequency resolution in all frequency ranges. [13] Difference Operation Method (DOM) is used for detecting the QRS complex of an electrocardiogram signal, this technique includes two processes, one is the difference operation process (DOP) an ...
Heart to Heart
... The heart is a fist-sized organ which lies in the centre of the chest. The right and left sides of the heart each have an upper chamber (atrium), which collects blood and lower chamber (ventricle), which ejects blood. To ensure that blood flows in only one direction, each ventricle has an inlet and ...
... The heart is a fist-sized organ which lies in the centre of the chest. The right and left sides of the heart each have an upper chamber (atrium), which collects blood and lower chamber (ventricle), which ejects blood. To ensure that blood flows in only one direction, each ventricle has an inlet and ...
Anatomical and radiographic appearance of the capuchin monkey
... were used from the Centro de Triagem de Animais Silvestres (Cetas) (Wild Animal Screening Center) located in São Luis, Maranhão state, Brazil. The animals were grouped according to their arrival at CETAS, so they were divided into two groups, consisting of six males and four females, with age rangin ...
... were used from the Centro de Triagem de Animais Silvestres (Cetas) (Wild Animal Screening Center) located in São Luis, Maranhão state, Brazil. The animals were grouped according to their arrival at CETAS, so they were divided into two groups, consisting of six males and four females, with age rangin ...
Targeted ablation of cardiac sympathetic neurons - AJP
... stain. TTC staining differentiates viable tissue by reacting with myocardial dehydrogenase enzymes to form a red brick stain. Necrotic tissue, which has lost its dehydrogenase enzymes, does not form a red stain and shows up as pale yellow. This stain has been shown to be a reliable indicator of myoc ...
... stain. TTC staining differentiates viable tissue by reacting with myocardial dehydrogenase enzymes to form a red brick stain. Necrotic tissue, which has lost its dehydrogenase enzymes, does not form a red stain and shows up as pale yellow. This stain has been shown to be a reliable indicator of myoc ...
Task Force Report Task Force on Sudden Cardiac Death of the
... deaths that occur unwitnessed, such as being found dead in bed. Most authors have erred in favour of classifying such events as SCDs, even though it is often impossible to define when the patient was last alive or for what duration he suffered any symptoms prior to death. This document will propose r ...
... deaths that occur unwitnessed, such as being found dead in bed. Most authors have erred in favour of classifying such events as SCDs, even though it is often impossible to define when the patient was last alive or for what duration he suffered any symptoms prior to death. This document will propose r ...
Perioperative right ventricular dysfunction
... right ventricular dysfunction has not been systematically addressed in patients undergoing cardiac or noncardiac surgery. Similar to pulmonary hypertension, there are only retrospective studies and small prospective studies documenting the association between preoperative right ventricular dysfuncti ...
... right ventricular dysfunction has not been systematically addressed in patients undergoing cardiac or noncardiac surgery. Similar to pulmonary hypertension, there are only retrospective studies and small prospective studies documenting the association between preoperative right ventricular dysfuncti ...
ABC of clinical electrocardiography Junctional tachycardias
... common in young people but may come and go through life. Patients may first present when they are old. When rapid arrhythmias occur in association with atrial fibrillation, patients may present with heart failure or hypotension. Drugs that block the atrioventricular node—for example, digoxin, verapa ...
... common in young people but may come and go through life. Patients may first present when they are old. When rapid arrhythmias occur in association with atrial fibrillation, patients may present with heart failure or hypotension. Drugs that block the atrioventricular node—for example, digoxin, verapa ...
2012 focused update of the ESC Guidelines for the management of
... and a three-fold incidence of congestive heart failure, and higher mortality. Hospitalization of patients with AF is also very common. This arrhythmia is a major cardiovascular challenge in modern society and its medical, social and economic aspects are all set to worsen over the coming decades. For ...
... and a three-fold incidence of congestive heart failure, and higher mortality. Hospitalization of patients with AF is also very common. This arrhythmia is a major cardiovascular challenge in modern society and its medical, social and economic aspects are all set to worsen over the coming decades. For ...
Catheter Ablation for Cardiac Arrhythmias
... [CI], 0.51 to 0.76). In the 2 unpublished RCTs, the absolute reduction in VT recurrence was reported to be 26% and 13%, although statistical testing for these differences was not reported. Combined analysis of complications concluded the following rates of adverse events: death (1%), stroke (1%), ca ...
... [CI], 0.51 to 0.76). In the 2 unpublished RCTs, the absolute reduction in VT recurrence was reported to be 26% and 13%, although statistical testing for these differences was not reported. Combined analysis of complications concluded the following rates of adverse events: death (1%), stroke (1%), ca ...
Pulmonary Vascular Resistance as Assessed by Bicycle Stress
... Background—Volume overload of the pulmonary circulation in patients with atrial septal defect (ASD)-type secundum causes pulmonary vascular disease over a long period of time. This study aimed at (1) evaluating pulmonary vascular resistance (PVR) and (2) investigating the relation between PVR and ex ...
... Background—Volume overload of the pulmonary circulation in patients with atrial septal defect (ASD)-type secundum causes pulmonary vascular disease over a long period of time. This study aimed at (1) evaluating pulmonary vascular resistance (PVR) and (2) investigating the relation between PVR and ex ...
Importance of Atrial Compliance in Cardiac Performance
... • The physiological significance of atrial compliance is not well understood, but some indirect evidence does suggest that it is important in hemodynamics. Brighton et al. (1) and Peters et al. (4th Annual Meeting of the Biomedical Engineering Society, 1973) have observed that the addition of a flex ...
... • The physiological significance of atrial compliance is not well understood, but some indirect evidence does suggest that it is important in hemodynamics. Brighton et al. (1) and Peters et al. (4th Annual Meeting of the Biomedical Engineering Society, 1973) have observed that the addition of a flex ...
New Classification Of Haemodynamics Of Vasovagal Syncope
... vasovagal reaction may provide adjunctive diagnostic information. A group of 101 consecutive patients affected by syncope of uncertain origin underwent passive tilt testing for 45 min at 60 followed, if negative, by oral (sublingual) trinitroglycerin (TNG) 0·4 g with continuation of the test for 20 ...
... vasovagal reaction may provide adjunctive diagnostic information. A group of 101 consecutive patients affected by syncope of uncertain origin underwent passive tilt testing for 45 min at 60 followed, if negative, by oral (sublingual) trinitroglycerin (TNG) 0·4 g with continuation of the test for 20 ...
Jugular Venous Pulse: Window into the Right Heart
... Severe right ventricular hypertrophy Sinus tachycardia Cardiac tamponade ...
... Severe right ventricular hypertrophy Sinus tachycardia Cardiac tamponade ...
CMR Imaging of Edema in Myocardial Infarction Using Cine
... reperfused AMI would have important implications: 1) increased efficiency of cardiac examinations; and 2) coregistration of cardiac function and tissue characterization for clinical use. The aim of this study was to investigate whether bSSFP imaging can be used to visualize the presence of edema in ...
... reperfused AMI would have important implications: 1) increased efficiency of cardiac examinations; and 2) coregistration of cardiac function and tissue characterization for clinical use. The aim of this study was to investigate whether bSSFP imaging can be used to visualize the presence of edema in ...
Clinical Pathology Conference “62 year old woman with weakness
... Finsterer J, et al. Noncompaction and neuromuscular disease with positive troponin-T in a nonagenerian. Clin Cardiol. 2007 Oct;(10):527-8. Dodd JD, et al. Quantification of left ventricular noncompaction and trabecular delayed hyperenhancement with cardiac MRI: correlation with clinical severity. AJ ...
... Finsterer J, et al. Noncompaction and neuromuscular disease with positive troponin-T in a nonagenerian. Clin Cardiol. 2007 Oct;(10):527-8. Dodd JD, et al. Quantification of left ventricular noncompaction and trabecular delayed hyperenhancement with cardiac MRI: correlation with clinical severity. AJ ...
Evaluation of Cardiothoracic Ratio of Normal Subjects
... of this study is to estimate the CTR among healthy population in order to establish a constant range or value which could be useful to detect enlargement of the heart. The CTR is usually estimated from chest radiographs which taken from posteroanterior(PA) views which shows the shadows of the heart, ...
... of this study is to estimate the CTR among healthy population in order to establish a constant range or value which could be useful to detect enlargement of the heart. The CTR is usually estimated from chest radiographs which taken from posteroanterior(PA) views which shows the shadows of the heart, ...
Aerobic exercise training promotes physiological cardiac
... regulators, which have been shown to play a key role in a myriad of cellular processes, including growth, fibrosis, apoptosis, angiogenesis, and cardiac function under physiological and pathological conditions. miRNAs are considered promising therapeutic targets for CVD (4, 15, 71, 74, 85, 90). We h ...
... regulators, which have been shown to play a key role in a myriad of cellular processes, including growth, fibrosis, apoptosis, angiogenesis, and cardiac function under physiological and pathological conditions. miRNAs are considered promising therapeutic targets for CVD (4, 15, 71, 74, 85, 90). We h ...
atrial fibrillation
... born with, can be caused by an infection (such as rheumatic fever), or it can be caused by hardening and/or damage to the valves caused by aging. CARDIOMYOPATHIES are diseases of the heart muscle that can lead to congestive heart failure (when the heart can’t pump blood well enough to meet the body’ ...
... born with, can be caused by an infection (such as rheumatic fever), or it can be caused by hardening and/or damage to the valves caused by aging. CARDIOMYOPATHIES are diseases of the heart muscle that can lead to congestive heart failure (when the heart can’t pump blood well enough to meet the body’ ...
Executive Summary - Society for Cardiovascular Angiography and
... increased dramatically over the last decade. The Certificate of Need (CON) regulatory programs have had little impact on this expansion. Whether quality and outcomes are similar to hospitals with onsite cardiovascular surgery remains uncertain. The actual number of laboratories without surgical back ...
... increased dramatically over the last decade. The Certificate of Need (CON) regulatory programs have had little impact on this expansion. Whether quality and outcomes are similar to hospitals with onsite cardiovascular surgery remains uncertain. The actual number of laboratories without surgical back ...
Understanding Atrial Fibrillation
... born with, can be caused by an infection (such as rheumatic fever), or it can be caused by hardening and/or damage to the valves caused by aging. CARDIOMYOPATHIES are diseases of the heart muscle that can lead to congestive heart failure (when the heart can’t pump blood well enough to meet the body’ ...
... born with, can be caused by an infection (such as rheumatic fever), or it can be caused by hardening and/or damage to the valves caused by aging. CARDIOMYOPATHIES are diseases of the heart muscle that can lead to congestive heart failure (when the heart can’t pump blood well enough to meet the body’ ...
cardiology1
... 1- Water hammer pulse: pulse felt against soft tissue. 2- Wide pulse pressure > 60 mm Hg, with diastolic < 60 3- Digital pulsations: When pressing finger tips against each other, you will find red part moving out & in with systolic and ...
... 1- Water hammer pulse: pulse felt against soft tissue. 2- Wide pulse pressure > 60 mm Hg, with diastolic < 60 3- Digital pulsations: When pressing finger tips against each other, you will find red part moving out & in with systolic and ...
Cardiac contractility modulation
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Cardiac contractility modulation (CCM) is a treatment for patients with moderate to severe left ventricular systolic heart failure (NYHA class II–IV). The short- and long-term use of this therapy enhances both the strength of ventricular contraction and the heart’s pumping capacity. The CCM mechanism is based on stimulation of the cardiac muscle by non-excitatory electrical signals (NES). CCM treatment is delivered by a pacemaker-like device that applies the NES, adjusted to and synchronized with the electrical action in the cardiac cycle.In CCM therapy, electrical stimulation is applied to the cardiac muscle during the absolute refractory period. In this phase of the cardiac cycle, electrical signals cannot trigger new cardiac muscle contractions, hence this type of stimulation is known as a non-excitatory stimulation. However, the electrical CCM signals increase the influx of calcium ions into the cardiac muscle cells (cardiomyocytes). In contrast to other electrical stimulation treatments for heart failure, such as pacemaker therapy or implantable cardioverter defibrillators (ICD), CCM does not affect the cardiac rhythm directly. Rather, the aim is to enhance the heart’s natural contraction (the native cardiac contractility) sustainably over long periods of time. Furthermore, unlike most interventions that increase cardiac contractility, CCM is not associated with an unfavorable increase in oxygen demand by the heart (measured in terms of Myocardial Oxygen Consumption or MVO2). This may be explained by the beneficial effect CCM has in improving cardiac efficiency. A meta-analysis in 2014 and an overview of device-based treatment options in heart failure in 2013 concluded that CCM treatment is safe, that it is generally beneficial to patients and that CCM treatment increases the exercise tolerance (ET) and quality of life (QoL) of patients. Furthermore, preliminary long-term survival data shows that CCM is associated with lower long-term mortality in heart failure patients when compared with expected rates among similar patients not treated with CCM.