Application of first-pass contrast bolus tracking sequence for the
... congenital pulmonary and great vessel anomalies helps clinicians to determine the appropriate management strategy for the patient. In the preoperative period, evaluation of the anomalous vascular anatomy guides the surgeon during the planning of the operation. Echocardiography has been used as the p ...
... congenital pulmonary and great vessel anomalies helps clinicians to determine the appropriate management strategy for the patient. In the preoperative period, evaluation of the anomalous vascular anatomy guides the surgeon during the planning of the operation. Echocardiography has been used as the p ...
Volume Changes in Painful and Painless Myocardial
... Stimulation of left ventricular stretch receptors has been proposed as a possible mechanism for the occurrence of cardiac pain. Changes in left ventricular volume were continuously assessed in 12 patients during 11 spontaneous (two painful) and 12 ergometrine-induced (nine painful) ischemic attacks ...
... Stimulation of left ventricular stretch receptors has been proposed as a possible mechanism for the occurrence of cardiac pain. Changes in left ventricular volume were continuously assessed in 12 patients during 11 spontaneous (two painful) and 12 ergometrine-induced (nine painful) ischemic attacks ...
A Breijo Pattern Associated to a Wolff-Parkinson-White
... According to some clinical studies, the “intermittency” of the delta wave in the ECG tracing, presupposes a major probability that an individual with such “intermittency” can remain asymptomatic throughout life. Individuals with Wolff-ParkinsonWhite pattern in which delta waves disappear with increa ...
... According to some clinical studies, the “intermittency” of the delta wave in the ECG tracing, presupposes a major probability that an individual with such “intermittency” can remain asymptomatic throughout life. Individuals with Wolff-ParkinsonWhite pattern in which delta waves disappear with increa ...
Determinants of Hemodynamic Compromise
... 16 patients with hypotension and low cardiac output responded to initial treatment with fluids, atropine, and temporary pacing (Figure 1). Ten other patients manifested hypotension and low cardiac output refractory to these initial therapeutic measures; they required support with positive inotropic ...
... 16 patients with hypotension and low cardiac output responded to initial treatment with fluids, atropine, and temporary pacing (Figure 1). Ten other patients manifested hypotension and low cardiac output refractory to these initial therapeutic measures; they required support with positive inotropic ...
The Cardiovascular System: The Heart
... – Tachycardia: abnormally fast heart rate – Ectopic pacemaker: • Abnormal cells • Generate high rate of action potentials • Bypass conducting system ...
... – Tachycardia: abnormally fast heart rate – Ectopic pacemaker: • Abnormal cells • Generate high rate of action potentials • Bypass conducting system ...
Perspectives and future trends in cellular electrophysiology
... The development of transient Q waves, which may occur during acute ischemia (27.28). can be explained by the inexcitability of the cells within the ischemic zone. This occurs when the ionic and metabolic changes depolarize the resting membrane to levels that prevent a propagated depolarization from ...
... The development of transient Q waves, which may occur during acute ischemia (27.28). can be explained by the inexcitability of the cells within the ischemic zone. This occurs when the ionic and metabolic changes depolarize the resting membrane to levels that prevent a propagated depolarization from ...
Sinus Rhythms
... • Occasional block with constant PR interval in preceding beats. • Normal P wave at expected time, but no QRS follows. • Usually due to a block within the His Bundle, may be associated with bundle ...
... • Occasional block with constant PR interval in preceding beats. • Normal P wave at expected time, but no QRS follows. • Usually due to a block within the His Bundle, may be associated with bundle ...
DIRECT CORONARY ARTERY PERFUSION FROM THE LEFT
... flow increased. Indeed, there was a roughly linear relationship between regional function and mean coronary flow as seen in Figs 3, C (typical example) and 4, B (results from all studies). As a result, regional function, which was reduced to approximately 50% of baseline with PStarling = 0, was rest ...
... flow increased. Indeed, there was a roughly linear relationship between regional function and mean coronary flow as seen in Figs 3, C (typical example) and 4, B (results from all studies). As a result, regional function, which was reduced to approximately 50% of baseline with PStarling = 0, was rest ...
Thrombogenicity and cardiovascular effects of
... (odds ratio 2.92).65 The increased risk was somewhat greater in cyclists (odds ratio 3.94) than is automobile users (odds ratio 2.60), suggesting an adverse interaction between physical activity and traffic-related air pollution. In a case-crossover study a 25 μg/mm3 PM2.5 rise within the two hours ...
... (odds ratio 2.92).65 The increased risk was somewhat greater in cyclists (odds ratio 3.94) than is automobile users (odds ratio 2.60), suggesting an adverse interaction between physical activity and traffic-related air pollution. In a case-crossover study a 25 μg/mm3 PM2.5 rise within the two hours ...
PDF
... In this exercise, echocardiography substudy, measurements were carried out in a subgroup of patients after 4–8 weeks following an acute HF exacerbation. All patients enrolled in Rennes were invited to participate in the submaximal exercise echo study. After ensuring, they were haemodynamically stabl ...
... In this exercise, echocardiography substudy, measurements were carried out in a subgroup of patients after 4–8 weeks following an acute HF exacerbation. All patients enrolled in Rennes were invited to participate in the submaximal exercise echo study. After ensuring, they were haemodynamically stabl ...
Methodology of monitoring cardiovascular regulation
... BP includes both baroreflex and random influences; if baroreflex – mediated effects on HP are present, they should appear as such when averaging over ramps is performed 41. In addition, this technique included 49.8 r 4.1% of all the recorded beats in BRS index calculation. Calculation also included ...
... BP includes both baroreflex and random influences; if baroreflex – mediated effects on HP are present, they should appear as such when averaging over ramps is performed 41. In addition, this technique included 49.8 r 4.1% of all the recorded beats in BRS index calculation. Calculation also included ...
sanger - Carolinas HealthCare System
... Sanger is actively participating in a host of PCI research initiatives. Among these is the industrysponsored ABSORB trial, evaluating the use of a bio-absorbable stent in place of a traditional stent. This trial is designed to examine whether a drug-eluting stent absorbed by the body over one to two ...
... Sanger is actively participating in a host of PCI research initiatives. Among these is the industrysponsored ABSORB trial, evaluating the use of a bio-absorbable stent in place of a traditional stent. This trial is designed to examine whether a drug-eluting stent absorbed by the body over one to two ...
Cardiac Arrhythmias and Stroke
... could be a marker of mitral valve calcification or left atrial enlargement, which in turn could cause increased thrombus formation and embolism.26 In has been shown that frequent or complex ventricular arrhythmias are common among older individuals both with and without evidence of atherosclerotic d ...
... could be a marker of mitral valve calcification or left atrial enlargement, which in turn could cause increased thrombus formation and embolism.26 In has been shown that frequent or complex ventricular arrhythmias are common among older individuals both with and without evidence of atherosclerotic d ...
Imaging Human Atherosclerosis with ""To
... balloon angioplasty and thrombolytic therapy 34 have allowed tissue salvage in many patients with advanced atherosclerosis, prevention or arrest of the disease before critical stenosis develops would be preferable.58 Furthermore, identification of patients at high risk for acute complications from a ...
... balloon angioplasty and thrombolytic therapy 34 have allowed tissue salvage in many patients with advanced atherosclerosis, prevention or arrest of the disease before critical stenosis develops would be preferable.58 Furthermore, identification of patients at high risk for acute complications from a ...
Continuing evolution of therapy for coronary artery disease. Initial results... coronary angioplasty.
... to medicine in these patients, but the number of PTCA patients in this subgroup was low. Conclusions In this first large-scale, prospective observational treatment comparison of PTCA, CABG, and medicine, we confirmed the previously reported survival advantages for CABG over medical therapy for three ...
... to medicine in these patients, but the number of PTCA patients in this subgroup was low. Conclusions In this first large-scale, prospective observational treatment comparison of PTCA, CABG, and medicine, we confirmed the previously reported survival advantages for CABG over medical therapy for three ...
ORIGINAL ARTICLE
... Comparisons between the patients with hypertension and the controls were performed using Students “unpaired t test”. The Pearson correlation analysis was used to test for significant association between the vagal tests (resting heart rate, E: I ratio and resting heart rate variability) and total leu ...
... Comparisons between the patients with hypertension and the controls were performed using Students “unpaired t test”. The Pearson correlation analysis was used to test for significant association between the vagal tests (resting heart rate, E: I ratio and resting heart rate variability) and total leu ...
Diastolic Dysfunction Cardiovascular Aging and the
... diastole and offers greater resistance to filling in late diastole, so that diastolic pressures are elevated. Elevated left atrial pressure is transmitted backward through the valveless pulmonary veins to the pulmonary capillary bed. Under normal resting conditions, the patient may be asymptomatic. ...
... diastole and offers greater resistance to filling in late diastole, so that diastolic pressures are elevated. Elevated left atrial pressure is transmitted backward through the valveless pulmonary veins to the pulmonary capillary bed. Under normal resting conditions, the patient may be asymptomatic. ...
Cor Pulmonale - CHEST Publications
... The venous pressure may be elevated in emphysema in the absence of failurb, or may be normal at rest and rise on exercise. This increase in venous pressure in the absence of cardiac failure has usually been ascribed to an increase in intra-pleural pressure. The x-ray and electrocardiogram are of gre ...
... The venous pressure may be elevated in emphysema in the absence of failurb, or may be normal at rest and rise on exercise. This increase in venous pressure in the absence of cardiac failure has usually been ascribed to an increase in intra-pleural pressure. The x-ray and electrocardiogram are of gre ...
A persistent left superior vena cava
... There are two types of PLSVC reported in the literature. PLSVC connecting to the right atrium via coronary sinus forms 90% of the anomalies of the superior vena cava. In the other 10%, PLSVC connects to the left atrium.(1,2) PLSVC connecting to the roof of the left atrium is very rare, and in this c ...
... There are two types of PLSVC reported in the literature. PLSVC connecting to the right atrium via coronary sinus forms 90% of the anomalies of the superior vena cava. In the other 10%, PLSVC connects to the left atrium.(1,2) PLSVC connecting to the roof of the left atrium is very rare, and in this c ...
Increased cardiac work provides a link between systemic
... length compared with WKY (SHR 27.4 1.0 mgmm 1, WKY 16.5 0.5 mgmm 1, P < 0.001). SHRs exhibited LV dilatation at 21 month as demonstrated by the significantly greater EDV compared with control. The ratio of LV mass to EDV has previously been used as an index of concentric hypertrophy (Fonseca e ...
... length compared with WKY (SHR 27.4 1.0 mgmm 1, WKY 16.5 0.5 mgmm 1, P < 0.001). SHRs exhibited LV dilatation at 21 month as demonstrated by the significantly greater EDV compared with control. The ratio of LV mass to EDV has previously been used as an index of concentric hypertrophy (Fonseca e ...
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.