Essentials of Anatomy and Physiology, 9e (Marieb)
... 14) Which one of the following represents the correct path for the transmission of an impulse in the intrinsic conduction system of the heart: A) atrioventricular (AV) node, sinoatrial (SA) node, atrioventricular (AV) bundle, right and left bundle branches, Purkinje fibers B) atrioventricular (AV) n ...
... 14) Which one of the following represents the correct path for the transmission of an impulse in the intrinsic conduction system of the heart: A) atrioventricular (AV) node, sinoatrial (SA) node, atrioventricular (AV) bundle, right and left bundle branches, Purkinje fibers B) atrioventricular (AV) n ...
Sympathetic Activity in Patients With Panic Disorder at Rest, Under
... patients with primary cardiac arrhythmias can be misdiagnosed as having panic disorder.27 Accordingly, all patients were clinically assessed by a cardiologist (M.D.E.) participating in the study. In each patient, mitral valve prolapse was excluded by echocardiography, and the electrocardiogram revea ...
... patients with primary cardiac arrhythmias can be misdiagnosed as having panic disorder.27 Accordingly, all patients were clinically assessed by a cardiologist (M.D.E.) participating in the study. In each patient, mitral valve prolapse was excluded by echocardiography, and the electrocardiogram revea ...
Role of Structural Barriers in the Mechanism of Alternans
... produced by a 10x2 mm epicardial laser-lesion. In controls, APD alternated in phase at all ventricular sites above a critical heart rate, i.e. concordant alternans. Also, above a faster critical heart rate threshold, APD alternated with opposite phase between sites, i.e. discordant alternans. In con ...
... produced by a 10x2 mm epicardial laser-lesion. In controls, APD alternated in phase at all ventricular sites above a critical heart rate, i.e. concordant alternans. Also, above a faster critical heart rate threshold, APD alternated with opposite phase between sites, i.e. discordant alternans. In con ...
Coroner - Courts Administration Authority
... 2.12. Dr Mahar was questioned about the possible connection between trauma and the deceased’s heart attack. In his experience, acute heart attacks occur where ‘it’s really always after massive trauma’ (T46). He believes that massive trauma was required to cause cardiac injury such that massive chest ...
... 2.12. Dr Mahar was questioned about the possible connection between trauma and the deceased’s heart attack. In his experience, acute heart attacks occur where ‘it’s really always after massive trauma’ (T46). He believes that massive trauma was required to cause cardiac injury such that massive chest ...
Using the Surface Electrocardiogram to Localize the Origin of
... analysis of the QRS morphologic patterns and vectors can discern the site of activation of myocardium. There have been described numerous reports about ECG features of idiopathic left- and right-ventricular VT. In this review, we summarized typical ECG characteristics according to the VT sites of or ...
... analysis of the QRS morphologic patterns and vectors can discern the site of activation of myocardium. There have been described numerous reports about ECG features of idiopathic left- and right-ventricular VT. In this review, we summarized typical ECG characteristics according to the VT sites of or ...
Perfusion vector - a new method to quantify myocardial perfusion
... Results: For simulated anterior defects, the stress perfusion vector component on the y-axis (anterior-inferior direction) increased in proportion to the defect size. For the simulated lateral defects, the stress perfusion vector component on the x-axis (septal-lateral direction) decreased in propor ...
... Results: For simulated anterior defects, the stress perfusion vector component on the y-axis (anterior-inferior direction) increased in proportion to the defect size. For the simulated lateral defects, the stress perfusion vector component on the x-axis (septal-lateral direction) decreased in propor ...
Four Out of Five Doctors
... Researchers at Harvard Medical School concluded a six-year study by saying that healthy men over age 50 can cut their heart attack risk in half by taking a single aspirin, every other day. But don’t head for the medicine cabinet just yet. Head to the doctor, if you think you might benefit. And even ...
... Researchers at Harvard Medical School concluded a six-year study by saying that healthy men over age 50 can cut their heart attack risk in half by taking a single aspirin, every other day. But don’t head for the medicine cabinet just yet. Head to the doctor, if you think you might benefit. And even ...
- Wiley Online Library
... Effective management of HF depends on an accurate and rapid diagnosis. Currently, this requires assessment of symptoms and physical signs in combination with advanced and expensive imaging of cardiac structure and function. Symptom-based diagnostic challenges occur as co-morbidities of HF have simil ...
... Effective management of HF depends on an accurate and rapid diagnosis. Currently, this requires assessment of symptoms and physical signs in combination with advanced and expensive imaging of cardiac structure and function. Symptom-based diagnostic challenges occur as co-morbidities of HF have simil ...
CPR Course
... Stroke & TIA Ischemic Stroke Ischemic stroke is a life-threatening event in which part of the brain does not receive enough oxygen, usually due to a blood clot lodged in a cerebral artery. ...
... Stroke & TIA Ischemic Stroke Ischemic stroke is a life-threatening event in which part of the brain does not receive enough oxygen, usually due to a blood clot lodged in a cerebral artery. ...
Examination of the Heart
... Palpation Usually inspection and palpation are discussed together because there is an intimate relationship between these two processes in the heart examination. Palpation not only confirms the results in inspection, but also discovers diagnostic signs. ...
... Palpation Usually inspection and palpation are discussed together because there is an intimate relationship between these two processes in the heart examination. Palpation not only confirms the results in inspection, but also discovers diagnostic signs. ...
Right ventricular cardiac myxoma. Histopathology diagnosis in
... out of the 12 endocardial abnormalities that were used to detect vimentin, CD31, CD34, alpha-smooth muscle actin, S100 protein, thrombomodulin, calretinin and c-kit (CD117), and a tyrosine kinase growth factor receptor for stem cell factor usually expressed by embryonic/fetal endothelium. They found ...
... out of the 12 endocardial abnormalities that were used to detect vimentin, CD31, CD34, alpha-smooth muscle actin, S100 protein, thrombomodulin, calretinin and c-kit (CD117), and a tyrosine kinase growth factor receptor for stem cell factor usually expressed by embryonic/fetal endothelium. They found ...
Large Pericardial Effusion : A Clinical Dilemma!
... the heart, or the kidneys may be the sole or the principally affected site.Transthyretin is the most common amyloidogenic protein in familial disease. In senile systemic amyloidosis, wild-type transthyretin forms amyloid deposits predominantly in the heart. Here senile amyloidosis is ruled out becau ...
... the heart, or the kidneys may be the sole or the principally affected site.Transthyretin is the most common amyloidogenic protein in familial disease. In senile systemic amyloidosis, wild-type transthyretin forms amyloid deposits predominantly in the heart. Here senile amyloidosis is ruled out becau ...
BAYLOR HEART AND VASCULAR SERVICES AT DALLAS
... However, it was in the face of these challenges that our team showed their true character. Guided by our founding principles of compassion, honesty, transparency, and patient-centered care, our board of managers, leadership team and staff came together as one to achieve some of the biggest milestone ...
... However, it was in the face of these challenges that our team showed their true character. Guided by our founding principles of compassion, honesty, transparency, and patient-centered care, our board of managers, leadership team and staff came together as one to achieve some of the biggest milestone ...
The Fontan Circulation: The Known, the Unknown and
... capacity in Fontan patients, as well as safety and tolerability, remains unknown [16]. An additional way of increasing cardiac output was shown by Shafer et al. [17••]. In a normal biventricular circulation cardiac output is achieved by an increase in heart rate and a balanced increase in biventricu ...
... capacity in Fontan patients, as well as safety and tolerability, remains unknown [16]. An additional way of increasing cardiac output was shown by Shafer et al. [17••]. In a normal biventricular circulation cardiac output is achieved by an increase in heart rate and a balanced increase in biventricu ...
Atrioventricular Pressure Half-Time
... 1 are shown in figure 1, and during exercise in figure 2. The left atrial mean pressure increased 37%, from 27 mm Hg at rest to 37 mm Hg during exercise. Cardiac output increased 58%, from 3.8 to 5.7 L per minute, and the heart rate increased 60%, from 50 to 80 beats per minute, indicating a decreas ...
... 1 are shown in figure 1, and during exercise in figure 2. The left atrial mean pressure increased 37%, from 27 mm Hg at rest to 37 mm Hg during exercise. Cardiac output increased 58%, from 3.8 to 5.7 L per minute, and the heart rate increased 60%, from 50 to 80 beats per minute, indicating a decreas ...
Cardiac Surgery: Aortic Aneurysms
... called an aortic dissection (see Figure 3). The inner tear causes bleeding into the other layers of the vessel. As the bleeding increases, the layers of tissue separate and weaken the aortic wall. This can lead to an aneurysm which can rupture. The tear can start anywhere along the aorta from the be ...
... called an aortic dissection (see Figure 3). The inner tear causes bleeding into the other layers of the vessel. As the bleeding increases, the layers of tissue separate and weaken the aortic wall. This can lead to an aneurysm which can rupture. The tear can start anywhere along the aorta from the be ...
fulltext - DiVA Portal
... Advanced heart failure (AdHF) is a malignant disease by nature [1]. It is characterised by a debilitating late course, with increasingly frequent hospitalisations and considerable morbidity besides the obvious mortality [2]. Heart failure affects quality of life (QoL) more profoundly than many other ...
... Advanced heart failure (AdHF) is a malignant disease by nature [1]. It is characterised by a debilitating late course, with increasingly frequent hospitalisations and considerable morbidity besides the obvious mortality [2]. Heart failure affects quality of life (QoL) more profoundly than many other ...
ECG Notes
... myocardial ischaemia / cardiomyopathy vi. arrhythmias - post-tachycardia syndrome - cardiac arrest of any aetiology - chronic idioventricular rhythms (inc. pacing) reduced QT interval ...
... myocardial ischaemia / cardiomyopathy vi. arrhythmias - post-tachycardia syndrome - cardiac arrest of any aetiology - chronic idioventricular rhythms (inc. pacing) reduced QT interval ...
Fasting In Vivo Delays Myocardial Cell Damage After Brief Periods
... ,umol/g dry/hr) with simultaneous increased lactate utilization (from +278 to -976 ,umol/g dry/hr). In hearts from fasted animals, no change in glucose utilization was seen. The lactate utilization was less and the glucose utilization significantly greater than in hearts from fed animals (Table 2). ...
... ,umol/g dry/hr) with simultaneous increased lactate utilization (from +278 to -976 ,umol/g dry/hr). In hearts from fasted animals, no change in glucose utilization was seen. The lactate utilization was less and the glucose utilization significantly greater than in hearts from fed animals (Table 2). ...
Dilated cardiomyopathy in mice deficient for the lysosomal cysteine
... left ventricular dimensions was observed in 1-year-old mice (Fig. 4). Again, four of the 14 ctsl⫺/⫺ mice investigated by echocardiography exhibited a severe enlargement of the left ventricle with a 2- to 3-fold increase in the volumes of the left ventricle at the end of systole and diastole, which w ...
... left ventricular dimensions was observed in 1-year-old mice (Fig. 4). Again, four of the 14 ctsl⫺/⫺ mice investigated by echocardiography exhibited a severe enlargement of the left ventricle with a 2- to 3-fold increase in the volumes of the left ventricle at the end of systole and diastole, which w ...
Electrical cardioversion for atrial fibrillation and flutter
... Current management of sustained atrial fibrillation usually includes drugs to limit the ventricular rate e.g. digoxin ('rate control' strategy) and either anticoagulants or antithrombotic drugs to reduce the risk of embolic complications. One problem with this approach is that although 'rate control ...
... Current management of sustained atrial fibrillation usually includes drugs to limit the ventricular rate e.g. digoxin ('rate control' strategy) and either anticoagulants or antithrombotic drugs to reduce the risk of embolic complications. One problem with this approach is that although 'rate control ...
Progressive Dystrophic Pathology in Diaphragm and Impairment of
... FKRP mutations are the most common causes of the dystroglycanopathies. Almost all of the FKRP mutations are missense point mutations with the C826A mutation being the most common. While no specific correlation between mutation site and disease phenotype has been established, the C826A homozygotes ar ...
... FKRP mutations are the most common causes of the dystroglycanopathies. Almost all of the FKRP mutations are missense point mutations with the C826A mutation being the most common. While no specific correlation between mutation site and disease phenotype has been established, the C826A homozygotes ar ...
Opening and Closing Characteristics of the Aortic Valve
... Background—The surgical approach to aortic root aneurysm and/or dissection remains controversial. The use of valve-sparing operations, which are thought to have many advantages, is increasing. We hypothesized that the particular technique and type of surgery could influence valve motion characterist ...
... Background—The surgical approach to aortic root aneurysm and/or dissection remains controversial. The use of valve-sparing operations, which are thought to have many advantages, is increasing. We hypothesized that the particular technique and type of surgery could influence valve motion characterist ...
Coronary artery disease
Coronary artery disease (CAD), also known as ischemic heart disease (IHD), atherosclerotic heart disease, atherosclerotic cardiovascular disease, and coronary heart disease, is a group of diseases that includes: stable angina, unstable angina, myocardial infarction, and sudden coronary death. It is within the group of cardiovascular diseases of which it is the most common type. A common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Occasionally it may feel like heartburn. Usually symptoms occur with exercise or emotional stress, last less than a few minutes, and gets better with rest. Shortness of breath may also occur and sometimes no symptoms are present. The first sign is occasionally a heart attack. Other complications include heart failure or an irregular heartbeat.Risk factors include: high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol, among others. Other risks include depression. The underlying mechanism involves atherosclerosis of the arteries of the heart. A number of tests may help with diagnoses including: electrocardiogram, cardiac stress testing, coronary computed tomographic angiography, and coronary angiogram, among others.Prevention is by eating a healthy diet, regular exercise, maintaining a healthy weight and not smoking. Sometimes medication for diabetes, high cholesterol, or high blood pressure are also used. There is limited evidence for screening people who are at low risk and do not have symptoms. Treatment involves the same measures as prevention. Additional medications such as antiplatelets including aspirin, beta blockers, or nitroglycerin may be recommended. Procedures such as percutaneous coronary intervention (PCI) or coronary artery bypass surgery (CABG) may be used in severe disease. In those with stable CAD it is unclear if PCI or CABG in addition to the other treatments improve life expectancy or decreases heart attack risk.In 2013 CAD was the most common cause of death globally, resulting in 8.14 million deaths (16.8%) up from 5.74 million deaths (12%) in 1990. The risk of death from CAD for a given age has decreased between 1980 and 2010 especially in the developed world. The number of cases of CAD for a given age has also decreased between 1990 and 2010. In the United States in 2010 about 20% of those over 65 had CAD, while it was present in 7% of those 45 to 64, and 1.3% of those 18 to 45. Rates are higher among men than women of a given age.