2011 Cardio - Arlington High School
... Congestive heart failure – when the pumping efficiency of the heart is depressed so that circulation is inadequate to meet tissue needs. A progressive condition that may be caused by coronary atherosclerosis (blockage of coronary vessels with fatty buildup), persistent high blood pressure or mul ...
... Congestive heart failure – when the pumping efficiency of the heart is depressed so that circulation is inadequate to meet tissue needs. A progressive condition that may be caused by coronary atherosclerosis (blockage of coronary vessels with fatty buildup), persistent high blood pressure or mul ...
the current role of echocardiography in cardiac resynchronization
... factors including location and extent of lower response rate to CRT and less favoramyocardial scar, LV lead position, right ble clinical outcomes [14-16]. This imporventricular function and in addition to lack tant observation that patients with signifiof baseline dyssynchrony [17-22]. The cant dyss ...
... factors including location and extent of lower response rate to CRT and less favoramyocardial scar, LV lead position, right ble clinical outcomes [14-16]. This imporventricular function and in addition to lack tant observation that patients with signifiof baseline dyssynchrony [17-22]. The cant dyss ...
Lecture 7_CV_2016
... When blood flow to the vasomotor center in the lower brain stem becomes decreased severely enough to cause nutritional deficiency/cerebral ischemia, the vasoconstrictor and cardioaccelerator neurons in the vasomotor center respond directly to the ischemia and become strongly excited. When this excit ...
... When blood flow to the vasomotor center in the lower brain stem becomes decreased severely enough to cause nutritional deficiency/cerebral ischemia, the vasoconstrictor and cardioaccelerator neurons in the vasomotor center respond directly to the ischemia and become strongly excited. When this excit ...
Electrophysiology and Anatomy of Embryonic Rabbit - AJP
... chick (7). In pre-septation chick embryo hearts, ventricular activation occurred in a “base-to-apex” fashion, whereas completion of ventricular septation was coincident with the emergence of an “apex-to-base” pattern of conduction. It was inferred from this apparent switch that the completion of ven ...
... chick (7). In pre-septation chick embryo hearts, ventricular activation occurred in a “base-to-apex” fashion, whereas completion of ventricular septation was coincident with the emergence of an “apex-to-base” pattern of conduction. It was inferred from this apparent switch that the completion of ven ...
pub1196_02.06 - manha.indd - Portal de Revistas em Veterinária e
... demonstrating transient arrhythmias, that allows continuous recording of cardiac electrical activity while the patient is engaged in normal daily activities. This study was undertaken to define 24-h AECG parameters, including variations in heart rate, and the types and incidence of arrhythmias in cl ...
... demonstrating transient arrhythmias, that allows continuous recording of cardiac electrical activity while the patient is engaged in normal daily activities. This study was undertaken to define 24-h AECG parameters, including variations in heart rate, and the types and incidence of arrhythmias in cl ...
personal identification and authentication by using “the way
... Research by Putte and Keuning [4] that tested several fingerprint sensors to check whether they accept an artificially created (dummy) finger instead of a real finger, provides proof of just how crucial liveness testing is but also just how ineffective these liveness mechanisms currently is. The aut ...
... Research by Putte and Keuning [4] that tested several fingerprint sensors to check whether they accept an artificially created (dummy) finger instead of a real finger, provides proof of just how crucial liveness testing is but also just how ineffective these liveness mechanisms currently is. The aut ...
The Abdominojugular Reflux Sign
... vation with inspiration) is seen in 33% of patients with pure constrictive pericarditis (13,14) and, 33% to 100% of patients with right ventricular infarction (9). To the extent that Kussmaul’s sign is due to a similar physiology, abdominojugular reflux may have similar predictive ability. The value ...
... vation with inspiration) is seen in 33% of patients with pure constrictive pericarditis (13,14) and, 33% to 100% of patients with right ventricular infarction (9). To the extent that Kussmaul’s sign is due to a similar physiology, abdominojugular reflux may have similar predictive ability. The value ...
Elderly humans exposed to concentrated air pollution particles have R.B. Devlin
... daily concentrations of air pollution particles with a 50% cutoff aerodynamic diameter of 10 mm (PM10) and increased mortality and morbidity attributable to respiratory and cardiovascular causes [1–3]. A recent analysis of w90 USA cities reported that a 10 mg?m-3 increase in PM10 resulted in an aver ...
... daily concentrations of air pollution particles with a 50% cutoff aerodynamic diameter of 10 mm (PM10) and increased mortality and morbidity attributable to respiratory and cardiovascular causes [1–3]. A recent analysis of w90 USA cities reported that a 10 mg?m-3 increase in PM10 resulted in an aver ...
The Cardiovascular System
... Systemic venous pressure is much lower than arterial pressure. Although venous pressure ultimately depends on left ventricular contraction, much of this force is dissipated as blood flows through the arterial tree and the capillary bed. Walls of veins contain less smooth muscle than walls of arterie ...
... Systemic venous pressure is much lower than arterial pressure. Although venous pressure ultimately depends on left ventricular contraction, much of this force is dissipated as blood flows through the arterial tree and the capillary bed. Walls of veins contain less smooth muscle than walls of arterie ...
Inotrope c - University of Michigan
... failure annually. Each year, 750,000 patients with heart failure are hospitalized and 250,000 die. Overall, nearly 50% of patients die within five years of the onset of symptoms. The incidence of heart failure increases with age. Heart failure is the most common cause of hospitalization in the elder ...
... failure annually. Each year, 750,000 patients with heart failure are hospitalized and 250,000 die. Overall, nearly 50% of patients die within five years of the onset of symptoms. The incidence of heart failure increases with age. Heart failure is the most common cause of hospitalization in the elder ...
Cardiopulmonary Resuscitation: Current Status
... ETIOLOGY AND EPIDEMIOLOGY OF CARDIAC ARREST Cardiac arrest is usually the result of a cardiac dysrhythmia. Approximately 80% to 90% of adults with sudden nontraumatic cardiac arrest are found to be in ventricular fibrillation (VF) when an initial electrocardiogram is obtained.1 – 4 When VF-associate ...
... ETIOLOGY AND EPIDEMIOLOGY OF CARDIAC ARREST Cardiac arrest is usually the result of a cardiac dysrhythmia. Approximately 80% to 90% of adults with sudden nontraumatic cardiac arrest are found to be in ventricular fibrillation (VF) when an initial electrocardiogram is obtained.1 – 4 When VF-associate ...
Takayasu Arteritis Associated with Hyperlipidemia presented with
... Assessing response to treatment in takayasu arteritis is challenging. Prior studies have shown that clinical signs and symptoms of disease and elevated acute phase reactants are poorl y correlated with disease activit y. In the presence of hardware or clips from aneurismal repair, non -invasive stud ...
... Assessing response to treatment in takayasu arteritis is challenging. Prior studies have shown that clinical signs and symptoms of disease and elevated acute phase reactants are poorl y correlated with disease activit y. In the presence of hardware or clips from aneurismal repair, non -invasive stud ...
PDF
... Fourier Transform (FT) provides good description of the frequencies in a waveform, but not their time of occurrence. Complex exponentials representing frequency information of the signal stretch out to infinity in time. FT analyze the signal globally, not locally. To overcome the limitation of FT th ...
... Fourier Transform (FT) provides good description of the frequencies in a waveform, but not their time of occurrence. Complex exponentials representing frequency information of the signal stretch out to infinity in time. FT analyze the signal globally, not locally. To overcome the limitation of FT th ...
The Cardiovascular System: The Heart: Part A
... Pathway of Blood Through the Heart • Equal volumes of blood pumped to pulmonary and systemic circuits • Pulmonary circuit short, low-pressure circulation • Systemic circuit long, high-friction circulation • Anatomy of ventricles reflects differences – Left ventricle walls 3X thicker than right • Pu ...
... Pathway of Blood Through the Heart • Equal volumes of blood pumped to pulmonary and systemic circuits • Pulmonary circuit short, low-pressure circulation • Systemic circuit long, high-friction circulation • Anatomy of ventricles reflects differences – Left ventricle walls 3X thicker than right • Pu ...
Dysfunction: systolic vs. diastolic
... The end-diastolic pressure is 16-26 mm Hg (normal EDP is < 12 mm Hg) The atrial pressures that are needed to complete filling are even higher ...
... The end-diastolic pressure is 16-26 mm Hg (normal EDP is < 12 mm Hg) The atrial pressures that are needed to complete filling are even higher ...
Bicuspid pulmonary valve without associated cardiac anomalies: a
... that does not have some fairly gross abnormality of septa or origin of great vessels may well be unique’; as put forward by Enticknap (1956). A series of necropsy studies at the Guy’s Hospital has revealed that pulmonary malformations are associated predominantly with the Fallot’s tetralogy and one ...
... that does not have some fairly gross abnormality of septa or origin of great vessels may well be unique’; as put forward by Enticknap (1956). A series of necropsy studies at the Guy’s Hospital has revealed that pulmonary malformations are associated predominantly with the Fallot’s tetralogy and one ...
English
... ventricle (tricuspid valve) is abnormally formed and placed lower than normal in the right ventricle. However, in most patients, WPW is not related to any other heart abnormality. It can occur at any age, is often first noted in childhood, but may not be diagnosed until adulthood in some patients. S ...
... ventricle (tricuspid valve) is abnormally formed and placed lower than normal in the right ventricle. However, in most patients, WPW is not related to any other heart abnormality. It can occur at any age, is often first noted in childhood, but may not be diagnosed until adulthood in some patients. S ...
Circulation and the design of cardiovascular (CV
... system (heart, vessels, blood pressure, control, hemostasis). This first lecture will introduce the cardiovascular (CV) topic and discuss the heart as a pump. ! The sections for this lecture are:! Introduction to the CV system ...
... system (heart, vessels, blood pressure, control, hemostasis). This first lecture will introduce the cardiovascular (CV) topic and discuss the heart as a pump. ! The sections for this lecture are:! Introduction to the CV system ...
Dysfunction: systolic vs. diastolic
... The end-diastolic pressure is 16-26 mm Hg (normal EDP is < 12 mm Hg) The atrial pressures that are needed to complete filling are even higher ...
... The end-diastolic pressure is 16-26 mm Hg (normal EDP is < 12 mm Hg) The atrial pressures that are needed to complete filling are even higher ...
Cardiac toxoplasmosis after heart transplantation diagnosed by
... treatment. A negative T. gondii PCR in the serum has a good negative predictive value, but it cannot rule out the diagnosis of toxoplasmosis, as cases of toxoplasmosis proven on organ tissue PCR and immunohistochemistry have also been reported with negative PCR results from serum (8, 9). In addition ...
... treatment. A negative T. gondii PCR in the serum has a good negative predictive value, but it cannot rule out the diagnosis of toxoplasmosis, as cases of toxoplasmosis proven on organ tissue PCR and immunohistochemistry have also been reported with negative PCR results from serum (8, 9). In addition ...
Cardiac resynchronization therapy: could a numerical simulator be a
... the reduction of: (1) the regional wall stress, (2) the myocardial oxygen consumption, (3) the sympathetic tone, (4) the progression of mitral regurgitation4,5. Biventricular stimulation through the CRT is applied to patients affected by left ventricular failure with an intra-ventricular conduction ...
... the reduction of: (1) the regional wall stress, (2) the myocardial oxygen consumption, (3) the sympathetic tone, (4) the progression of mitral regurgitation4,5. Biventricular stimulation through the CRT is applied to patients affected by left ventricular failure with an intra-ventricular conduction ...
increase
... The cardiac muscle work as syncytium - Atrial syncytium - Ventricular syncytium This achieved by Intercalated discs which connects cardiac muscle cells together to work as one unit (syncytium) Intercalated discs - Desmosomes make strong mechanical attachments between the cells and transmit the force ...
... The cardiac muscle work as syncytium - Atrial syncytium - Ventricular syncytium This achieved by Intercalated discs which connects cardiac muscle cells together to work as one unit (syncytium) Intercalated discs - Desmosomes make strong mechanical attachments between the cells and transmit the force ...
Revascularization for Unprotected Left Main Stem Coronary Artery
... angiographic assessment of restenosis (only 1 study reassesses all patients [20]), short duration of follow-up (mean of 11 months), and lack of a control group in 4 studies (thereby inviting interpretive biases). Furthermore, with the exception of the Bologna registry (24), for studies of BMS there ...
... angiographic assessment of restenosis (only 1 study reassesses all patients [20]), short duration of follow-up (mean of 11 months), and lack of a control group in 4 studies (thereby inviting interpretive biases). Furthermore, with the exception of the Bologna registry (24), for studies of BMS there ...
Diesel Exhaust Inhalation Increases Cardiac
... of the RR interval (SDNN), square root of the mean of squared differences of adjacent RR intervals (RMSSD), triangular index, and percent of adjacent normal RR intervals differing by ≥ 15 ms (pNN15). pNN15 is a measure of parasympathetic tone. SDNN and triangular index represent overall HRV, whereas ...
... of the RR interval (SDNN), square root of the mean of squared differences of adjacent RR intervals (RMSSD), triangular index, and percent of adjacent normal RR intervals differing by ≥ 15 ms (pNN15). pNN15 is a measure of parasympathetic tone. SDNN and triangular index represent overall HRV, whereas ...
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.