Ventricular stroke work and efficiency both remain nearly optimal
... have been extensively studied (6, 12, 14, 2528), simultaneous metabolic data are scant (5, 20, 26). The data that exist do not clearly define conditions for which efficiency is maximal, or even whether there is an optimum (20). Thus prior interpretations of clinical ventricular-vascular data have pr ...
... have been extensively studied (6, 12, 14, 2528), simultaneous metabolic data are scant (5, 20, 26). The data that exist do not clearly define conditions for which efficiency is maximal, or even whether there is an optimum (20). Thus prior interpretations of clinical ventricular-vascular data have pr ...
SSPAH Template
... ● At the completion of this educational activity, participants should be able to: ...
... ● At the completion of this educational activity, participants should be able to: ...
ppt
... the presence of atrial-biventricular (RV + LV) pacing will provide early stimulation to an otherwise late segment of electrical activation in the LV. This should translate into an increase in the EF, decrease of the LV dimension, improvement in the QOL and NYHA class. This may translate into an decr ...
... the presence of atrial-biventricular (RV + LV) pacing will provide early stimulation to an otherwise late segment of electrical activation in the LV. This should translate into an increase in the EF, decrease of the LV dimension, improvement in the QOL and NYHA class. This may translate into an decr ...
Misdiagnosis of Dextrocardia and Situs Inversus in a two Year Old
... the atria that is right atrium on the right side and left atrium on the left side. Dextrocardia associated with situs solitus is called dextroversion, which is the second most common type of dextrocardia characterized by D-loop ventricles, normal great arteries and the apex of heart pointing towards ...
... the atria that is right atrium on the right side and left atrium on the left side. Dextrocardia associated with situs solitus is called dextroversion, which is the second most common type of dextrocardia characterized by D-loop ventricles, normal great arteries and the apex of heart pointing towards ...
2005 American Heart Association Guidelines for CPR and ECC
... the treatment of asystole or pulseless electrical activity. Since then, multiple studies have failed to show significant differences in outcome between arrest patients treated initially with either 1 mg of epinephrine or 40 units of vasopressin. As a result, the 2005 Guidelines state that one dose o ...
... the treatment of asystole or pulseless electrical activity. Since then, multiple studies have failed to show significant differences in outcome between arrest patients treated initially with either 1 mg of epinephrine or 40 units of vasopressin. As a result, the 2005 Guidelines state that one dose o ...
Evaluation and Management of Patients with Heart Failure and
... have preserved left ventricular ejection fraction (LVEF), variably defined as an LVEF O40%, O45%, or O50%.1,2 When these patients have invasive or non-invasive evidence of abnormal diastolic function (either abnormal relaxation, filling or stiffness) they are said to have ‘‘diastolic HF’’.3 Although ...
... have preserved left ventricular ejection fraction (LVEF), variably defined as an LVEF O40%, O45%, or O50%.1,2 When these patients have invasive or non-invasive evidence of abnormal diastolic function (either abnormal relaxation, filling or stiffness) they are said to have ‘‘diastolic HF’’.3 Although ...
Atrial fibrillation
... • Hypertension (high blood pressure) • Pulmonary embolism Less common causes: • Hyperthyroidism • Pericarditis • Viral infection In at least 10 percent of the cases, no underlying heart disease is found. In these cases, atrial fibrillation may be related to alcohol or excessive caffeine use, stress, ...
... • Hypertension (high blood pressure) • Pulmonary embolism Less common causes: • Hyperthyroidism • Pericarditis • Viral infection In at least 10 percent of the cases, no underlying heart disease is found. In these cases, atrial fibrillation may be related to alcohol or excessive caffeine use, stress, ...
Cardiac Interpretation of Pediatric Chest X-Ray
... structures. Instead the heart appears as a silhouette of overlapping cardiovascular chambers and vessels. Chest X-ray obtained in two perpendicular views, specifically anteroposterior (AP) and lateral, makes it possible to construct a mental threedimensional image of the heart. The size and shape of ...
... structures. Instead the heart appears as a silhouette of overlapping cardiovascular chambers and vessels. Chest X-ray obtained in two perpendicular views, specifically anteroposterior (AP) and lateral, makes it possible to construct a mental threedimensional image of the heart. The size and shape of ...
PM2.5 and Cardiovascular Diseases in the Elderly: An
... heart rate variability [35]. Heart rate variability (HRV) refers to the cyclical changes of sinus rhythm, and it is an important index of tonicity and sympathetic-parasympathetic balance. Some research finds that exposure of PM2.5 is linked with HRV change in the elderly. Compared with exposure to c ...
... heart rate variability [35]. Heart rate variability (HRV) refers to the cyclical changes of sinus rhythm, and it is an important index of tonicity and sympathetic-parasympathetic balance. Some research finds that exposure of PM2.5 is linked with HRV change in the elderly. Compared with exposure to c ...
Optimal Training Intensity: Making Sense of Assessment Methods
... thermodynamics, and circulating levels of catecholamines. For example, the physiological response to a FTP of 250W after two hours of riding is very different than the physiological response to 250W after 20 minutes of riding. However, sub‐threshold metabolic fitness (substrate oxidatio ...
... thermodynamics, and circulating levels of catecholamines. For example, the physiological response to a FTP of 250W after two hours of riding is very different than the physiological response to 250W after 20 minutes of riding. However, sub‐threshold metabolic fitness (substrate oxidatio ...
Air Pollution and Cardiovascular Disease in the Multi
... cardiovascular disease (CVD). Many studies have shown associations between short-term exposures to elevated levels of air pollutants and CVD events, and several cohort studies suggest effects of long-term exposure on cardiovascular mortality, coronary heart disease events, and stroke. The biologic m ...
... cardiovascular disease (CVD). Many studies have shown associations between short-term exposures to elevated levels of air pollutants and CVD events, and several cohort studies suggest effects of long-term exposure on cardiovascular mortality, coronary heart disease events, and stroke. The biologic m ...
The Acute Effects of Therapeutic Activities on Heart Rate and Blood
... system to exercises in individuals whose primary problem is orthopedic. ^ Isokinetic dynamometers are devices which resist applied forces and control the speed of exercise at a predetermined rate. This type of apparatus is designed for the measurement of maximum voluntary muscle activity and is comm ...
... system to exercises in individuals whose primary problem is orthopedic. ^ Isokinetic dynamometers are devices which resist applied forces and control the speed of exercise at a predetermined rate. This type of apparatus is designed for the measurement of maximum voluntary muscle activity and is comm ...
1 Gender and Posture Differences in Cardiovascular Responses to
... showed similar blood pressure responses between genders. It was noted that the average systolic blood pressures were lower in women at rest and during sustained isometric contraction, but these differences were not significant. Ettinger et al. (7) did show attenuated increases in blood pressure in f ...
... showed similar blood pressure responses between genders. It was noted that the average systolic blood pressures were lower in women at rest and during sustained isometric contraction, but these differences were not significant. Ettinger et al. (7) did show attenuated increases in blood pressure in f ...
Physical Activity in the Prevention and Management of High Blood
... will produce the maximum health benefits at a relative low risk for injury. In this regard, low-to-moderate intensity exercise (approximately 60% to 85% of age-predicted maximum heart rate) is more effective in lowering BP when compared to higher intensities.35 In studies designed to compare the eff ...
... will produce the maximum health benefits at a relative low risk for injury. In this regard, low-to-moderate intensity exercise (approximately 60% to 85% of age-predicted maximum heart rate) is more effective in lowering BP when compared to higher intensities.35 In studies designed to compare the eff ...
A Case Report of Papillary Fibroelastoma Attached to Chorda
... discovered in an echocardiography within detailed examination of ischemic heart disease accidentally. We diagnosed him as ischemic heart disease and doubt of heart tumor. We thought about the danger of future embolism, surgical treatment was decided. We dissected the tumor together with one chorda t ...
... discovered in an echocardiography within detailed examination of ischemic heart disease accidentally. We diagnosed him as ischemic heart disease and doubt of heart tumor. We thought about the danger of future embolism, surgical treatment was decided. We dissected the tumor together with one chorda t ...
International - Congenital Cardiology Today
... An earlier Granelli study published in 2007 looked at 10,000 normal Swedish infants along with 9 confirmed with CCHD. Another parameter, the perfusion index (PI), was described. The PI is the infrared component of the pulse oximetry signal. In neonates, they established reference values for PI using ...
... An earlier Granelli study published in 2007 looked at 10,000 normal Swedish infants along with 9 confirmed with CCHD. Another parameter, the perfusion index (PI), was described. The PI is the infrared component of the pulse oximetry signal. In neonates, they established reference values for PI using ...
- ScienceCentral
... positive correlation between IVRT and the Em/Am ratio. IVCT did not show any relationship with Sm or FS. Based on these results, it may be concluded that these time variables have no clinical significance. However, the variables were not estimated with hemodynamic monitoring, so further study is nec ...
... positive correlation between IVRT and the Em/Am ratio. IVCT did not show any relationship with Sm or FS. Based on these results, it may be concluded that these time variables have no clinical significance. However, the variables were not estimated with hemodynamic monitoring, so further study is nec ...
Research Article Impact of Transcendental Meditation on Left
... includes introductory and preparatory sessions to outline the benefits and mechanics of the TM technique, a brief personal interview, a session of personal instruction, and three followup group sessions taking place over three consecutive days [31]. In the present study, after personal instruction, ...
... includes introductory and preparatory sessions to outline the benefits and mechanics of the TM technique, a brief personal interview, a session of personal instruction, and three followup group sessions taking place over three consecutive days [31]. In the present study, after personal instruction, ...
Truncal Inversion withBiventricular Pulmonary Trunk and Aorta from
... ventricle of the Taussig-Bing type) vas thereby developed. It xvas suggested that the Tanssig-Bing heart be considered anianatoml-ic entity, in which the aorta arises from the right ventricle and is not related to the dlefect. while the puliimonary trunk arises fromii the right or 1)oth ventricles a ...
... ventricle of the Taussig-Bing type) vas thereby developed. It xvas suggested that the Tanssig-Bing heart be considered anianatoml-ic entity, in which the aorta arises from the right ventricle and is not related to the dlefect. while the puliimonary trunk arises fromii the right or 1)oth ventricles a ...
Effects of Flecainide and Propafenone on Systolic
... and supraventricular their efficacy, like is often limited proarrhythmic as demonstrated ...
... and supraventricular their efficacy, like is often limited proarrhythmic as demonstrated ...
Anatomic and Electrocardiographic Position of the Heart
... degrees. Those hearts having an angle between 25 and 40.9 degrees were considered to have backward rotation of the apex; those having angles between 41 and 57 degrees were considered to have forward rotation of the apex. Twenty-seven of the 34 cases studied had electrocardiograms showing forward or ...
... degrees. Those hearts having an angle between 25 and 40.9 degrees were considered to have backward rotation of the apex; those having angles between 41 and 57 degrees were considered to have forward rotation of the apex. Twenty-seven of the 34 cases studied had electrocardiograms showing forward or ...
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.