2011 Supraventricular tachycardia causing heart failure
... PSVT being more common in younger patients and atrial fibrillation and flutter being more common in older patients. Although no absolute heart rate cutoff exists, many consider persistent rates greater than 100 beats/min are necessary to develop relatively early-onset left ventricular dysfunction; h ...
... PSVT being more common in younger patients and atrial fibrillation and flutter being more common in older patients. Although no absolute heart rate cutoff exists, many consider persistent rates greater than 100 beats/min are necessary to develop relatively early-onset left ventricular dysfunction; h ...
Evaluation of heart function with impedance cardiography in acute
... Acute myocardial infarction (AMI) is one of important problems threatening the health of subjects in developed countries and the incidence of AMI is also increasing in developing countries over year. AMI refers to the ischemiainduced myocardial necrosis due to coronary thrombosis. At the early stage ...
... Acute myocardial infarction (AMI) is one of important problems threatening the health of subjects in developed countries and the incidence of AMI is also increasing in developing countries over year. AMI refers to the ischemiainduced myocardial necrosis due to coronary thrombosis. At the early stage ...
Ampulla Cardiomyopathy (Takotsubo Cardiomyopathy)-- - A Review
... fact, we think the syndrome is probably under- ...
... fact, we think the syndrome is probably under- ...
Assessment of Left Ventricular Dyssynchrony by Real
... Cardiac resynchronization therapy (CRT) has been demonstrated to improve clinical outcomes and left ventricular (LV) performance in advanced heart failure patients.1,2 However, there is still a significant percentage of patients who do not show any clinical or echocardiographic response to CRT.1,3,4 ...
... Cardiac resynchronization therapy (CRT) has been demonstrated to improve clinical outcomes and left ventricular (LV) performance in advanced heart failure patients.1,2 However, there is still a significant percentage of patients who do not show any clinical or echocardiographic response to CRT.1,3,4 ...
Common Congenital Heart Disorders in Adults
... In general, patients with simple CHD require a modest level of clinical care aimed at prevention of complications (eg, endocarditis). Those with medium or high-risk CHD may require extensive evaluation and management of cardiac function, arrhythmias, surgical revisions, genetic counseling, and pregn ...
... In general, patients with simple CHD require a modest level of clinical care aimed at prevention of complications (eg, endocarditis). Those with medium or high-risk CHD may require extensive evaluation and management of cardiac function, arrhythmias, surgical revisions, genetic counseling, and pregn ...
Cardiology - What`s New in Medicine
... Reprinted with permission from CONSENSUS Trial Study Group. N Engl J Med. 1987;316:1429-1435; SOLVD Investigators. N Engl J Med. 1991;325:293-302. ...
... Reprinted with permission from CONSENSUS Trial Study Group. N Engl J Med. 1987;316:1429-1435; SOLVD Investigators. N Engl J Med. 1991;325:293-302. ...
- Gemini Graphic Design
... At the beginning of the cardiac cycle before ventricular contraction, the arterial pressure is at the diastolic level. This pressure is determined by the elastic state and vascular resistance of the arterial tree. As the ventricle contracts, its pressure quickly exceeds the arterial pressure. This p ...
... At the beginning of the cardiac cycle before ventricular contraction, the arterial pressure is at the diastolic level. This pressure is determined by the elastic state and vascular resistance of the arterial tree. As the ventricle contracts, its pressure quickly exceeds the arterial pressure. This p ...
Effect of Cardiac Resynchronization Therapy on Left Atrial Reverse
... left bundle branch block pattern. On echocardiographic examination, all patients had ejection fraction <35%, left ventricular end-diastolic diameter >56 mm and asynchronous left ventricular contraction. Functional capacity was NYHA III in 13 cases and NYHA IV in 7 cases. Exclusion criteria were age ...
... left bundle branch block pattern. On echocardiographic examination, all patients had ejection fraction <35%, left ventricular end-diastolic diameter >56 mm and asynchronous left ventricular contraction. Functional capacity was NYHA III in 13 cases and NYHA IV in 7 cases. Exclusion criteria were age ...
The efficacy and safety of Crataegus extract WS® 1442 in patients
... (heart rate × systolic blood pressure × 10− 2), or exercise tolerance as the primary outcome measure for efficacy, and their protocols restricted concomitant cardiac medication. Typically, patients with more severe forms of congestive heart failure, who suffer from a marked impairment of left ventri ...
... (heart rate × systolic blood pressure × 10− 2), or exercise tolerance as the primary outcome measure for efficacy, and their protocols restricted concomitant cardiac medication. Typically, patients with more severe forms of congestive heart failure, who suffer from a marked impairment of left ventri ...
Physiology of congenital heart disease
... tion of these. Oxygenated blood flows from the ventricular failure, or arrhythmias in adult life left to the right heart, thence to the lungs and is which can occur when a shunt of more than returned to the left atrium. The magnitude of the about 2:1 is sustained through childhood shunt is governed ...
... tion of these. Oxygenated blood flows from the ventricular failure, or arrhythmias in adult life left to the right heart, thence to the lungs and is which can occur when a shunt of more than returned to the left atrium. The magnitude of the about 2:1 is sustained through childhood shunt is governed ...
... postdelivery atrial septectomy can be performed safely and rapidly. The use of prenatal screening improves the prenatal condition of the child but may not translate into an improved outcome (at least in cases of transposition of the great arteries or HLHS).26,27 After delivery, the infant should und ...
Biventricular heart failure secondary to calcified
... tis. Surgical intervention can provide complete relief of symptoms,4 however, a wide resection of both pericardial layers has to be made, and though it can be of great benefit for the affected patients, the mortality risk during the procedure is high, reaching 6-12% according to different reports. M ...
... tis. Surgical intervention can provide complete relief of symptoms,4 however, a wide resection of both pericardial layers has to be made, and though it can be of great benefit for the affected patients, the mortality risk during the procedure is high, reaching 6-12% according to different reports. M ...
Magnetic resonance imaging of cardiac sarcoidosis: an evaluation
... This study has several limitations. First, it involved a relatively small number of patients. Second, although we pathologically confirmed the diagnosis of CS in two cases, we could not in the other cases. In this study, myocardial biopsy was performed in 7 cases, and 2 patients demonstrated positiv ...
... This study has several limitations. First, it involved a relatively small number of patients. Second, although we pathologically confirmed the diagnosis of CS in two cases, we could not in the other cases. In this study, myocardial biopsy was performed in 7 cases, and 2 patients demonstrated positiv ...
2-D Diagnosis of Effusion - NT Cardiovascular Center
... may be mistaken for normal cardiac chamber ...
... may be mistaken for normal cardiac chamber ...
Intensity of Heart Sounds in the Evaluation of Patients following
... that blood pressure is not the primary hemodynamic determinant ...
... that blood pressure is not the primary hemodynamic determinant ...
Effects of digitalis on the normal and the failing heart
... that the drug exerts this clinical effect primarily by slowing the heart rate. It was also thought that the extracardiac vascular actions of digitalis might be responsible for its therapeutic effect. It has now been established that cardiac glycosidescause arteriolar and venous constriction in a var ...
... that the drug exerts this clinical effect primarily by slowing the heart rate. It was also thought that the extracardiac vascular actions of digitalis might be responsible for its therapeutic effect. It has now been established that cardiac glycosidescause arteriolar and venous constriction in a var ...
Prevalence of sudden cardiac death during competitive sports
... artery disease (19 –21). Indeed, such relatively low overall risk associated with competitive athletics is reassuring and suggests that the high visibility provided these events, largely by the news media (1,22–26), is perhaps disproportionate to their impact on society in numerical terms. Implicati ...
... artery disease (19 –21). Indeed, such relatively low overall risk associated with competitive athletics is reassuring and suggests that the high visibility provided these events, largely by the news media (1,22–26), is perhaps disproportionate to their impact on society in numerical terms. Implicati ...
ecg-arryhthmias
... P wave & P-R interval • The P wave represents the wave of depolarization that spreads from the SA node throughout the atria, and is usually 0.08 to 0.1 seconds (80-100 ms) in duration. The brief isoelectric (zero voltage) period after the P wave represents the time in which the impulse is travelin ...
... P wave & P-R interval • The P wave represents the wave of depolarization that spreads from the SA node throughout the atria, and is usually 0.08 to 0.1 seconds (80-100 ms) in duration. The brief isoelectric (zero voltage) period after the P wave represents the time in which the impulse is travelin ...
Aortopulmonary window- A rare presentation in
... the coronary arteries (8%); tetralogy of fallot (5%); subaortic stenosis (3%); bicuspid aortic valve (3%) [6]. Development of the coronary arteries also occurs during the separation of the great vessels, which explains anomalous position of the coronary arteries. The associated cardiovascular condit ...
... the coronary arteries (8%); tetralogy of fallot (5%); subaortic stenosis (3%); bicuspid aortic valve (3%) [6]. Development of the coronary arteries also occurs during the separation of the great vessels, which explains anomalous position of the coronary arteries. The associated cardiovascular condit ...
The examination of the normal fetal heart using two
... Ultrasound techniques used in fetal cardiology are numerous. They include different approaches such as two-dimensional examination by the transabdominal or transvaginal route (in early pregnancy), the M-mode examination, and the different methods based on Doppler (e.g. pulsed Doppler, color Doppler, ...
... Ultrasound techniques used in fetal cardiology are numerous. They include different approaches such as two-dimensional examination by the transabdominal or transvaginal route (in early pregnancy), the M-mode examination, and the different methods based on Doppler (e.g. pulsed Doppler, color Doppler, ...
pericardial effusions by echocardiography - Heart
... to the aortic root and left atrium (Fig. 2A). Only a narrow echo-free space, wider in systole than in diastole, is visualised between the ventricular posterior wall and parietal pericardium at mid left ventricular level. This echo-free space widens considerably (to about 1-5 cm) behind the basal lef ...
... to the aortic root and left atrium (Fig. 2A). Only a narrow echo-free space, wider in systole than in diastole, is visualised between the ventricular posterior wall and parietal pericardium at mid left ventricular level. This echo-free space widens considerably (to about 1-5 cm) behind the basal lef ...
Contemporary Reviews in Cardiovascular Medicine
... the coronary sinus through right-sided heart catheterization. As oxygen dissolved in blood is negligible and hemoglobin concentrations in arterial and venous blood are similar, arteriovenous oxygen content difference can be obtained by determination of the differences in oxygen saturation levels bet ...
... the coronary sinus through right-sided heart catheterization. As oxygen dissolved in blood is negligible and hemoglobin concentrations in arterial and venous blood are similar, arteriovenous oxygen content difference can be obtained by determination of the differences in oxygen saturation levels bet ...
Partial atrioventricular canal defect: Long-term follow-up
... Reoperation. There were five reoperations (Table 1): three for mitral valve replacement (Patients 5, 7 and 24), one for coronary artery bypass grafting (Patient 6) and one for tricuspid valve replacement (Patient 3). All three patients requiring reoperation for mitral valve replacement had previous ...
... Reoperation. There were five reoperations (Table 1): three for mitral valve replacement (Patients 5, 7 and 24), one for coronary artery bypass grafting (Patient 6) and one for tricuspid valve replacement (Patient 3). All three patients requiring reoperation for mitral valve replacement had previous ...
Arrhythmogenic right ventricular cardiomyopathy/dysplasia
... Arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) is a heart muscle disease clinically characterized by life-threatening ventricular arrhythmias. Its prevalence has been estimated to vary from 1:2,500 to 1:5,000. ARVC/D is a major cause of sudden death in the young and athletes. The ...
... Arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) is a heart muscle disease clinically characterized by life-threatening ventricular arrhythmias. Its prevalence has been estimated to vary from 1:2,500 to 1:5,000. ARVC/D is a major cause of sudden death in the young and athletes. The ...
Prosthesis patient mismatch in aortic valve replacement: possible
... are also more likely to have severe coronary artery disease and poorer cardiac function and are therefore already at a higher risk from surgery. Accordingly, PPM could almost be considered as a ‘surrogate’ variable for other risk factors and as such even multivariate analysis can only partially, at ...
... are also more likely to have severe coronary artery disease and poorer cardiac function and are therefore already at a higher risk from surgery. Accordingly, PPM could almost be considered as a ‘surrogate’ variable for other risk factors and as such even multivariate analysis can only partially, at ...
Hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy (HCM) is a primary disease of the myocardium (the muscle of the heart) in which a portion of the myocardium is hypertrophied (thickened) without any obvious cause, creating functional impairment of the cardiac muscle. It is a leading cause of sudden cardiac death in young athletes.The occurrence of hypertrophic cardiomyopathy is a significant cause of sudden unexpected cardiac death in any age group and as a cause of disabling cardiac symptoms. Younger people are likely to have a more severe form of hypertrophic cardiomyopathy.HCM is frequently asymptomatic until sudden cardiac death, and for this reason some suggest routinely screening certain populations for this disease.A cardiomyopathy is a disease that affects the muscle of the heart. With HCM, the myocytes (cardiac contractile cells) in the heart increase in size, which results in the thickening of the heart muscle. In addition, the normal alignment of muscle cells is disrupted, a phenomenon known as myocardial disarray. HCM also causes disruptions of the electrical functions of the heart. HCM is most commonly due to a mutation in one of nine sarcomeric genes that results in a mutated protein in the sarcomere, the primary component of the myocyte (the muscle cell of the heart). These are predominantly single-point missense mutations in the genes for beta-myosin heavy chain (MHC), myosin-binding protein C, cardiac troponinT, or tropomyosin. These mutations cause myofibril and myocyte structural abnormalities and possible deficiencies in force generation. Not to be confused with dilated cardiomyopathy or any other cardiomyopathy.While most literature so far focuses on European, American, and Japanese populations, HCM appears in all ethnic groups. The prevalence of HCM is about 0.2% to 0.5% of the general population.