Evaluation of the CO2 Rebreathing Cardiac Output
... of cardiac output have been attempted such as impedance cardiography, echocardiography, and ballistocardiography.-1 Methods such as these have first had to establish the soundness of the principles involved in measuring cardiac output, and then to demonstrate that results obtained from the given tec ...
... of cardiac output have been attempted such as impedance cardiography, echocardiography, and ballistocardiography.-1 Methods such as these have first had to establish the soundness of the principles involved in measuring cardiac output, and then to demonstrate that results obtained from the given tec ...
Effect of healthy aging on left ventricular relaxation and - AJP
... history, clinical exam, and selected diagnostic tests as previously described (43). To enrich the total sample, subjects were additionally recruited from a random sample of ⬇20,000 employees at Texas Health Resources, the third largest employer in the Dallas-Fort Worth metroplex and a diverse health ...
... history, clinical exam, and selected diagnostic tests as previously described (43). To enrich the total sample, subjects were additionally recruited from a random sample of ⬇20,000 employees at Texas Health Resources, the third largest employer in the Dallas-Fort Worth metroplex and a diverse health ...
table of contents
... heart has already been doing extra work before birth. Symptoms of early heart failure may include fast breathing, difficulty with feeding, fast heart rate and low blood pressure. ...
... heart has already been doing extra work before birth. Symptoms of early heart failure may include fast breathing, difficulty with feeding, fast heart rate and low blood pressure. ...
Occlusion of aortopulmonary collateral arteries with
... Patients with PA + IVC may have multiple and large collateral arteries without any obstruction, as in this case, producing an excessive amount of blood to the lungs and predisposing to heart failure. Therefore, it is necessary to intervene in order to suppress this circulation. The traditional metho ...
... Patients with PA + IVC may have multiple and large collateral arteries without any obstruction, as in this case, producing an excessive amount of blood to the lungs and predisposing to heart failure. Therefore, it is necessary to intervene in order to suppress this circulation. The traditional metho ...
Echocardiographic Diagnosis of Idiopathic
... ranged from 26 to 64 years with a mean age of 44 years. Four patients presented with chest pain as their leading symptom. Five patients had dyspnea on exertion; two were referred because of an abnormal electrocardiogram, suggesting old myocardial infarction in one and left ventricular hypertrophy in ...
... ranged from 26 to 64 years with a mean age of 44 years. Four patients presented with chest pain as their leading symptom. Five patients had dyspnea on exertion; two were referred because of an abnormal electrocardiogram, suggesting old myocardial infarction in one and left ventricular hypertrophy in ...
Thirst response to acute hypovolaemia in syncope Linköping University Post Print
... presyncope during the protocol (n = 2). The participants had declared themselves to be non-smokers and free from cardiopulmonary disease, and were not taking medications that affect the cardiovascular system. The volunteers were selected from two different cohorts; those who had a history of VVS (VV ...
... presyncope during the protocol (n = 2). The participants had declared themselves to be non-smokers and free from cardiopulmonary disease, and were not taking medications that affect the cardiovascular system. The volunteers were selected from two different cohorts; those who had a history of VVS (VV ...
Cold acclimation increases cardiac myofilament function and
... Cold acclimation of trout also affects transcript levels of troponin I (Alderman et al., 2012), troponin C (Genge et al., 2013) and sarcoplasmic reticulum Ca2+-ATPase (SERCA) (Korajoki and Vornanen, 2012), all of which are key proteins involved in contraction. Korajoki and Vornanen (Korajoki and Vor ...
... Cold acclimation of trout also affects transcript levels of troponin I (Alderman et al., 2012), troponin C (Genge et al., 2013) and sarcoplasmic reticulum Ca2+-ATPase (SERCA) (Korajoki and Vornanen, 2012), all of which are key proteins involved in contraction. Korajoki and Vornanen (Korajoki and Vor ...
PDF Article - ScienceDirect
... laris. For example, when looking down into the right ven• tricle from the opened right atrium, one sees the anterior leaflet of the tricuspid valve which normally covers and hides the entire crista supraventricularis. If one looks into the right ventricle through a standard autopsy incision up throu ...
... laris. For example, when looking down into the right ven• tricle from the opened right atrium, one sees the anterior leaflet of the tricuspid valve which normally covers and hides the entire crista supraventricularis. If one looks into the right ventricle through a standard autopsy incision up throu ...
Electrocardiographic changes associated with serum electrolyte
... monophas ic ac tion potent ia l, it sho,\;!s tha t the Ql?.S complex coincides with the sudden depolarization of the fiber and the T-wave coincides 'lrJith the end of the repolarization process. 3 deHello and Hoffman,4using the technique of intracellular micro-electrodes, studied the effects of pota ...
... monophas ic ac tion potent ia l, it sho,\;!s tha t the Ql?.S complex coincides with the sudden depolarization of the fiber and the T-wave coincides 'lrJith the end of the repolarization process. 3 deHello and Hoffman,4using the technique of intracellular micro-electrodes, studied the effects of pota ...
Anesthesia and Pulmonary Hypertension
... risk that takes into consideration the type of surgery, patient's functional status, severity of disease including right ventricular function, and the patient's comorbidities. In addition, patients without a history who are at high risk for PH (e.g. scleroderma spectrum of diseases, obesity and obst ...
... risk that takes into consideration the type of surgery, patient's functional status, severity of disease including right ventricular function, and the patient's comorbidities. In addition, patients without a history who are at high risk for PH (e.g. scleroderma spectrum of diseases, obesity and obst ...
Recent Advances in Hypertension
... The consensus of meta-analyses and several reviews is that structured aerobic exercise training programs or increased physical activity of moderate intensity and adequate volume result in an independent reduction of ≈4 to 10 mm Hg in systolic and 3 to 8 mm Hg in diastolic BP for individuals with sta ...
... The consensus of meta-analyses and several reviews is that structured aerobic exercise training programs or increased physical activity of moderate intensity and adequate volume result in an independent reduction of ≈4 to 10 mm Hg in systolic and 3 to 8 mm Hg in diastolic BP for individuals with sta ...
reviews
... Box 1 | Mutations in the cardiac RyR2 linked to exercise-induced sudden cardiac death Sudden cardiac death is associated with common cardiac diseases and conditions, most notably heart failure (roughly 50% of heart failure patients die from fatal ventricular arrhythmias). However, fatal arrhythmias ...
... Box 1 | Mutations in the cardiac RyR2 linked to exercise-induced sudden cardiac death Sudden cardiac death is associated with common cardiac diseases and conditions, most notably heart failure (roughly 50% of heart failure patients die from fatal ventricular arrhythmias). However, fatal arrhythmias ...
Arrhythmogenic right ventricular cardiomyopathy Is it right?
... Clinical and non-invasive follow-up of fifteen patients with ARVC during a mean period of 8 years disclosed that progression of the disease is not uniform but generally "slow" in well controlled patients. However individual variation may occur. The determination of RV volume on magnetic resonance im ...
... Clinical and non-invasive follow-up of fifteen patients with ARVC during a mean period of 8 years disclosed that progression of the disease is not uniform but generally "slow" in well controlled patients. However individual variation may occur. The determination of RV volume on magnetic resonance im ...
Pericardial diseases
... In cases of severe mitral regurgitation, the jet lesions of the left atrial wall could lead to a tear and acute severe bleeding into the pericardium.17-19 Echocardiography reveals pericardial effusion with tamponade, a dilated left atrium and the presence of a mitral regurgitation jet (usually later ...
... In cases of severe mitral regurgitation, the jet lesions of the left atrial wall could lead to a tear and acute severe bleeding into the pericardium.17-19 Echocardiography reveals pericardial effusion with tamponade, a dilated left atrium and the presence of a mitral regurgitation jet (usually later ...
Print this article - PAGEPress Publications
... ICA even in the presence of complete CCA occlusion.4 Therefore flow dynamics to cerebral hemispheres supplied by a normal CoW may be more physiological even in the presence of CCA occlusion than in cases of ICA occlusion. However patients with anatomical variants in CoW anatomy may still be symptoma ...
... ICA even in the presence of complete CCA occlusion.4 Therefore flow dynamics to cerebral hemispheres supplied by a normal CoW may be more physiological even in the presence of CCA occlusion than in cases of ICA occlusion. However patients with anatomical variants in CoW anatomy may still be symptoma ...
Glucocorticoid receptor alters isovolumetric contraction and restrains
... for life after birth. Hearts of foetal SMGRKO mice, which lack GR in cardiomyocytes and VSM, showed evidence of functional, structural and biochemical immaturity (RogZielinska et al. 2013). Consistent with this, glucocorticoid treatment of primary murine foetal cardiomyocytes, improved contractility ...
... for life after birth. Hearts of foetal SMGRKO mice, which lack GR in cardiomyocytes and VSM, showed evidence of functional, structural and biochemical immaturity (RogZielinska et al. 2013). Consistent with this, glucocorticoid treatment of primary murine foetal cardiomyocytes, improved contractility ...
Contrast Media Selection in Interventional Cardiology
... undergoing PTCA that have been performed und published during the recent decade is shown in Table 3: a total of 6249 patients were enrolled. However, there were no significant differences observed in the incidence of emergent bypass surgery (non-ionic vs ionic, 1.3 % vs. 1.1 %), myocardial infarctio ...
... undergoing PTCA that have been performed und published during the recent decade is shown in Table 3: a total of 6249 patients were enrolled. However, there were no significant differences observed in the incidence of emergent bypass surgery (non-ionic vs ionic, 1.3 % vs. 1.1 %), myocardial infarctio ...
Corticosteroid-Associated Congestive Heart Failure in 12 Cats
... Vertebral-heart size on thoracic radiographs was increased. Mean interventricular septum thickness in diastole, mean left ventricular posterior wall thickness in diastole, and mean left atrial dimension at end-systole were above the reference range. Five cats died or were euthanized because of CHF. ...
... Vertebral-heart size on thoracic radiographs was increased. Mean interventricular septum thickness in diastole, mean left ventricular posterior wall thickness in diastole, and mean left atrial dimension at end-systole were above the reference range. Five cats died or were euthanized because of CHF. ...
Clinical Medicine Insights: Cardiology Arrhythmogenic Right
... arrhythmia is sustained or nonsustained monomorphic VT that originates in the RV and therefore has a left bundle branch block (LBBB) morphology. Alternatively, in some cases where the LV is involved, VT could present with a right bundle branch block (RBBB) morphology. These symptoms are usually exer ...
... arrhythmia is sustained or nonsustained monomorphic VT that originates in the RV and therefore has a left bundle branch block (LBBB) morphology. Alternatively, in some cases where the LV is involved, VT could present with a right bundle branch block (RBBB) morphology. These symptoms are usually exer ...
Circulation Research SEPTEMBER
... previously published (8). It indicated that thyroxine treatment produces a significant increase in cardiac function over that of the normal animals and that of normal animals paced at a rapid ventricular rate. The animal preparation and technique for measuring pressures in these studies have been de ...
... previously published (8). It indicated that thyroxine treatment produces a significant increase in cardiac function over that of the normal animals and that of normal animals paced at a rapid ventricular rate. The animal preparation and technique for measuring pressures in these studies have been de ...
Comparative Ultrastructural Morphometry Of The Relationship
... of myofibrillar surface by free SR (FSR) in ventricular myocytes of the bat add to the structural features that would facilitate reabsorption of calcium from the environs of myofibrils to induce relaxation after the contractile process. That this is likely an adaptation is supported by the work of ...
... of myofibrillar surface by free SR (FSR) in ventricular myocytes of the bat add to the structural features that would facilitate reabsorption of calcium from the environs of myofibrils to induce relaxation after the contractile process. That this is likely an adaptation is supported by the work of ...
Taurine depletion caused by knocking out the taurine transporter
... taurine in heart has not been clarified, taurine exerts several actions that could potentially benefit the diseased heart. First, it modulates ion transport and regulates intracellular calcium levels [12–14]. Maintenance of Ca2+ homeostasis is of paramount importance in the heart because either redu ...
... taurine in heart has not been clarified, taurine exerts several actions that could potentially benefit the diseased heart. First, it modulates ion transport and regulates intracellular calcium levels [12–14]. Maintenance of Ca2+ homeostasis is of paramount importance in the heart because either redu ...
Electrocardiographic changes in 1000 highly trained junior elite
... significantly more common in athletes, it was also present in 23% of non-athletes, indicating that it is probably a poor indicator of LVH in the young. Factors such as chest wall shape and size are also important determinants of the magnitude of voltage complexes on the surface ECG and were probably ...
... significantly more common in athletes, it was also present in 23% of non-athletes, indicating that it is probably a poor indicator of LVH in the young. Factors such as chest wall shape and size are also important determinants of the magnitude of voltage complexes on the surface ECG and were probably ...
Myocardial infarction
Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, occurs when blood flow stops to a part of the heart causing damage to the heart muscle. The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Often it is in the center or left side of the chest and lasts for more than a few minutes. The discomfort may occasionally feel like heartburn. Other symptoms may include shortness of breath, nausea, feeling faint, a cold sweat, or feeling tired. About 30% of people have atypical symptoms, with women more likely than men to present atypically. Among those over 75 years old, about 5% have had an MI with little or no history of symptoms. An MI may cause heart failure, an irregular heartbeat, or cardiac arrest.Most MIs occur due to coronary artery disease. Risk factors include high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol intake, among others. The mechanism of an MI often involves the rupture of an atherosclerotic plaque, leading to complete blockage of a coronary artery. MIs are less commonly caused by coronary artery spasms, which may be due to cocaine, significant emotional stress, and extreme cold, among others. A number of tests are useful to help with diagnosis, including electrocardiograms (ECGs), blood tests, and coronary angiography. An ECG may confirm an ST elevation MI if ST elevation is present. Commonly used blood tests include troponin and less often creatine kinase MB.Aspirin is an appropriate immediate treatment for a suspected MI. Nitroglycerin or opioids may be used to help with chest pain; however, they do not improve overall outcomes. Supplemental oxygen should be used in those with low oxygen levels or shortness of breath. In ST elevation MIs treatments which attempt to restore blood flow to the heart are typically recommended and include angioplasty, where the arteries are pushed open, or thrombolysis, where the blockage is removed using medications. People who have a non-ST elevation myocardial infarction (NSTEMI) are often managed with the blood thinner heparin, with the additional use angioplasty in those at high risk. In people with blockages of multiple coronary arteries and diabetes, bypass surgery (CABG) may be recommended rather than angioplasty. After an MI, lifestyle modifications, along with long term treatment with aspirin, beta blockers, and statins, are typically recommended.Worldwide, more than 3 million people have ST elevation MIs and 4 million have NSTEMIs each year. STEMIs occur about twice as often in men as women. About one million people have an MI each year in the United States. In the developed world the risk of death in those who have had an STEMI is about 10%. Rates of MI for a given age have decreased globally between 1990 and 2010.