Acta Radiologica Short Reports
... Survival rates in TOF with pulmonary atresia without surgical repair reported in the literature are as low as 50% at 1 year of age and 8% at 10 years (6). Our case shows an adult survivor of uncorrected TOF with pulmonary atresia, the oldest survivor ever reported in the literature being 59 years ol ...
... Survival rates in TOF with pulmonary atresia without surgical repair reported in the literature are as low as 50% at 1 year of age and 8% at 10 years (6). Our case shows an adult survivor of uncorrected TOF with pulmonary atresia, the oldest survivor ever reported in the literature being 59 years ol ...
Three-dimensional alignment of the aggregated myocytes in the
... implantation of the pump, the mice were anesthetized with pentobarbital sodium (50 mg/kg ip), and minipumps were placed subcutaneously in the intrascapular area to deliver angiotensin II at a dose of 300 g/day. The control group, also of seven mice, was given saline through the minipump. Prior to b ...
... implantation of the pump, the mice were anesthetized with pentobarbital sodium (50 mg/kg ip), and minipumps were placed subcutaneously in the intrascapular area to deliver angiotensin II at a dose of 300 g/day. The control group, also of seven mice, was given saline through the minipump. Prior to b ...
Mechanisms for increasing stroke volume during static exercise with
... first in the rate-responsive dual-chamber sensing and pacing mode (DDD), which tracked the intrinsic atrial rate and, after an appropriate atrioventricular delay (150–200 ms), paced the ventricle. Therefore, the observed HR increase simulates the normal physiological chronotropic response to static ...
... first in the rate-responsive dual-chamber sensing and pacing mode (DDD), which tracked the intrinsic atrial rate and, after an appropriate atrioventricular delay (150–200 ms), paced the ventricle. Therefore, the observed HR increase simulates the normal physiological chronotropic response to static ...
Accelerated idioventricular rhythm associated
... structural heart disease [3]. When AIVR presents in individuals with no structural heart disease, the mechanism involved is usually an increased vagal tone and decreased sympathetic tone [4]. AIVR is a benign ventricular arrhythmia, does not cause acute or progressive disorder, requires no specific ...
... structural heart disease [3]. When AIVR presents in individuals with no structural heart disease, the mechanism involved is usually an increased vagal tone and decreased sympathetic tone [4]. AIVR is a benign ventricular arrhythmia, does not cause acute or progressive disorder, requires no specific ...
Blood pressure determinants of left ventricular wall thickness and
... mass28 and impaired LV diastolic function.29 It is likely that salt plays a part in maintaining a raised SVR in susceptible hypertensives.30 Secondly, inappropriate aldosterone activity as represented by a raised aldosterone-to-renin ratio is a determinant of ExSBP in hypertension.31 This is relevan ...
... mass28 and impaired LV diastolic function.29 It is likely that salt plays a part in maintaining a raised SVR in susceptible hypertensives.30 Secondly, inappropriate aldosterone activity as represented by a raised aldosterone-to-renin ratio is a determinant of ExSBP in hypertension.31 This is relevan ...
Recent Studies in the Pre-Excitation Syndrome
... Therefore, an even earlier premature atrial beat than in figure 3 may result in complete normalization of the QRS complex if conduction over the accessory pathway fails , since, in this case the ventricles are normally activated only through the normal A-V conduction system and ventricular fusion is ...
... Therefore, an even earlier premature atrial beat than in figure 3 may result in complete normalization of the QRS complex if conduction over the accessory pathway fails , since, in this case the ventricles are normally activated only through the normal A-V conduction system and ventricular fusion is ...
Study of the Myocardial Contraction and Relaxation Velocities
... the septal, anterior, lateral, and posterior left ventricle walls) were respectively, in cm/s, 7.35(1.64), 5.26(1.88), and 3.33(1.58) in systole and 10.56(2.34), 7.92(2.37), and 3.98(1.64) in diastole. The mean time in which systolic peak velocity was recorded was 131.59ms (±19.12ms), and diastolic ...
... the septal, anterior, lateral, and posterior left ventricle walls) were respectively, in cm/s, 7.35(1.64), 5.26(1.88), and 3.33(1.58) in systole and 10.56(2.34), 7.92(2.37), and 3.98(1.64) in diastole. The mean time in which systolic peak velocity was recorded was 131.59ms (±19.12ms), and diastolic ...
Cardiopulmonary Exercise Testing Variables
... of left ventricular filling pressure, appears to be particularly valuable. Given the established value of echocardiography with TDI in those with HF-NEF, determination of its relationship to CPX, a well-established clinical assessment technique in its own right, is warranted. Initial research indica ...
... of left ventricular filling pressure, appears to be particularly valuable. Given the established value of echocardiography with TDI in those with HF-NEF, determination of its relationship to CPX, a well-established clinical assessment technique in its own right, is warranted. Initial research indica ...
Arterial switch operation for transposition of great arteries: late
... Positron emission tomography (PET) with N-13 ammonia analysis in asymptomatic children showed an increase of myocardial blood flow (MBF) at rest and, consequently, a significant impairment of coronary flow reserve (CFR) when compared to healthy controls. Visual analysis of the PET images revealed ad ...
... Positron emission tomography (PET) with N-13 ammonia analysis in asymptomatic children showed an increase of myocardial blood flow (MBF) at rest and, consequently, a significant impairment of coronary flow reserve (CFR) when compared to healthy controls. Visual analysis of the PET images revealed ad ...
Patient Education Guide: Severe Aortic Stenosis
... because they do not have appropriate access through their leg artery. A Heart Team will conduct a comprehensive evaluation to determine whether the TAVR procedure is an appropriate therapeutic option. In certain cases, TAVR may not be an option because of co-existing medical conditions or disease pr ...
... because they do not have appropriate access through their leg artery. A Heart Team will conduct a comprehensive evaluation to determine whether the TAVR procedure is an appropriate therapeutic option. In certain cases, TAVR may not be an option because of co-existing medical conditions or disease pr ...
Aubrey Leatham and the introduction of cardiac pacing to the UK
... infection would often lead to the abandonment of pacing and the almost inevitable death of the patient. The problem with infection was finally resolved when it became possible to implant a pacemaker below the skin. Elmqvist and Senning,5 working in Stockholm, first used such a device in 1958 and rep ...
... infection would often lead to the abandonment of pacing and the almost inevitable death of the patient. The problem with infection was finally resolved when it became possible to implant a pacemaker below the skin. Elmqvist and Senning,5 working in Stockholm, first used such a device in 1958 and rep ...
Early origins of cardiac hypertrophy: Does cardiomyocyte attrition
... Cardiac hypertrophy is recognized as an important predictor of cardiovascular morbidity and mortality, but the developmental origins of this condition are not well understood. 2. In the heart, a switch from hyperplastic to hypertrophic cellular growth occurs during late prenatal or early postnatal l ...
... Cardiac hypertrophy is recognized as an important predictor of cardiovascular morbidity and mortality, but the developmental origins of this condition are not well understood. 2. In the heart, a switch from hyperplastic to hypertrophic cellular growth occurs during late prenatal or early postnatal l ...
Supraventricular tachyarrhythmias (SVT)
... 1/ pharmacological: amiodarone, verapamil, propaphenon, used only in haemodynamically stable patients, when electric cardioversion cannot be performed ! 2/ electric cardioversion (synchronic discharge of 50-200 J) ! 3/ atrial cardiostimulation (overdriving) Long-term therapy: 1/ pharmacological 2/ c ...
... 1/ pharmacological: amiodarone, verapamil, propaphenon, used only in haemodynamically stable patients, when electric cardioversion cannot be performed ! 2/ electric cardioversion (synchronic discharge of 50-200 J) ! 3/ atrial cardiostimulation (overdriving) Long-term therapy: 1/ pharmacological 2/ c ...
Biventricular Pacemakers in Patients With Heart Failure
... with chronic heart failure may indicate ventricular dyssynchrony (the left and right ventricular contractions do not occur simultaneously and result in impaired ejection). Left bundle branch block is a common cause of QRS duration greater than 120 ms. In left bundle branch block, the left ventricle ...
... with chronic heart failure may indicate ventricular dyssynchrony (the left and right ventricular contractions do not occur simultaneously and result in impaired ejection). Left bundle branch block is a common cause of QRS duration greater than 120 ms. In left bundle branch block, the left ventricle ...
and Murray D. Esler Markus P. Schlaich, David
... This study comprehensively investigated the relation between regional sympathetic tone and hypertensive LV hypertrophy in humans. For the first time we demonstrate that hypertensive LV hypertrophy is correlated with increased sympathetic activity in the heart. Estimates of sympathetic tone in the ki ...
... This study comprehensively investigated the relation between regional sympathetic tone and hypertensive LV hypertrophy in humans. For the first time we demonstrate that hypertensive LV hypertrophy is correlated with increased sympathetic activity in the heart. Estimates of sympathetic tone in the ki ...
Brief Review - Hypertension
... by arterial pressure. Mitchell et al3,63 argue that “effective aortic diameter” measured indirectly using the water hammer equation is reduced in persons with isolated systolic hypertension. Such a view gains some support from Framingham data,24 which showed, after correction for age, that there is ...
... by arterial pressure. Mitchell et al3,63 argue that “effective aortic diameter” measured indirectly using the water hammer equation is reduced in persons with isolated systolic hypertension. Such a view gains some support from Framingham data,24 which showed, after correction for age, that there is ...
Device closure in adults with atrial septal defect in Shiraz
... use of this technique.2 Percutaneous device closure can be done safely in experienced hands with rare complications including device embolization, atrial arrhythmias, stroke, chamber perforation and thrombus formation in less than 1% of the patients.3 Successful defect closure improves functional cl ...
... use of this technique.2 Percutaneous device closure can be done safely in experienced hands with rare complications including device embolization, atrial arrhythmias, stroke, chamber perforation and thrombus formation in less than 1% of the patients.3 Successful defect closure improves functional cl ...
FREE Sample Here
... Typically results when the heart’s demand for oxygen exceeds its supply from the coronary circulation Specialized nerve tissue located in the internal carotid arteries and the aortic arch that detect changes in blood pressure The _____ septum separates the right and left atria. Electrolyte very impo ...
... Typically results when the heart’s demand for oxygen exceeds its supply from the coronary circulation Specialized nerve tissue located in the internal carotid arteries and the aortic arch that detect changes in blood pressure The _____ septum separates the right and left atria. Electrolyte very impo ...
Subacute cardiac perforations associated with active
... Figure 3 Surgical procedure in patient no. 1 (Table 3). The distal part of the lead is markedly protruding outside the right ventricle apex (white circle). The lead has been removed and an epicardial lead has been implanted. ...
... Figure 3 Surgical procedure in patient no. 1 (Table 3). The distal part of the lead is markedly protruding outside the right ventricle apex (white circle). The lead has been removed and an epicardial lead has been implanted. ...
Electrophysiology Testing and the Use of Devices in Heart Failure
... end-diastolic dimension O55 mm, as determined by echocardiography. Patients were required to be on optimal medical therapy, defined as ACE inhibitors and beta blockers, for 1 to 3 months before inclusion. Resynchronization improved symptoms, quality of life, and exercise capacity, while reducing LV ...
... end-diastolic dimension O55 mm, as determined by echocardiography. Patients were required to be on optimal medical therapy, defined as ACE inhibitors and beta blockers, for 1 to 3 months before inclusion. Resynchronization improved symptoms, quality of life, and exercise capacity, while reducing LV ...
ABLACION POR RADIOFRECUENCIA DE LA
... • Although the information comes from observational studies, those with AF + left ventricular dysfunction present an improvement in ejection fraction • Currently, studies on heart failure and ventricular impairment are being developed to assess this phenomenon. ...
... • Although the information comes from observational studies, those with AF + left ventricular dysfunction present an improvement in ejection fraction • Currently, studies on heart failure and ventricular impairment are being developed to assess this phenomenon. ...
The Cardiovascular System: The Heart Heart`s Place in the
... atrium and ventricle with the pulmonary circuit and left atrium and ventricle with the systemic circuit. The left ventricle s greater workload makes it more massive than the right, but the two pump equal amounts of blood. AV valves prevent backflow from the ventricles into the atria, and semilunar v ...
... atrium and ventricle with the pulmonary circuit and left atrium and ventricle with the systemic circuit. The left ventricle s greater workload makes it more massive than the right, but the two pump equal amounts of blood. AV valves prevent backflow from the ventricles into the atria, and semilunar v ...
Harms and benefits of screening young people to prevent sudden
... US study of 1339 students, 916 (68%) reported at least one positive response on a questionnaire with heart health questions. After review by a physician, 421/1339 (31.4%) had at least one relevant response that required additional cardiac evaluation.22 Electrocardiography will pick up only some of t ...
... US study of 1339 students, 916 (68%) reported at least one positive response on a questionnaire with heart health questions. After review by a physician, 421/1339 (31.4%) had at least one relevant response that required additional cardiac evaluation.22 Electrocardiography will pick up only some of t ...
Patients With Continuous-Flow Left Ventricular Assist
... physiological dogma that cardiovascular autonomic homeostasis requires pulsatile blood flow and pressure. We tested the hypothesis that continuous-flow LVADs impair baroreflex control of sympathetic nerve traffic, thus further exacerbating sympathetic excitation. We included 9 male heart failure pat ...
... physiological dogma that cardiovascular autonomic homeostasis requires pulsatile blood flow and pressure. We tested the hypothesis that continuous-flow LVADs impair baroreflex control of sympathetic nerve traffic, thus further exacerbating sympathetic excitation. We included 9 male heart failure pat ...
PERSISTENCE OF LEFT SUPERIOR VENA CAVA IN
... A 58-year-old patient, diagnosed with “idiopathic dilated cardiomyopathy” (IDC), total heart failure (HF) and left bundle branch block (LBBB). The condition was discovered 7 years ago, when first symptoms of HF appeared. An invasive diagnostics was performed in 2009 – selective coronary angiography ...
... A 58-year-old patient, diagnosed with “idiopathic dilated cardiomyopathy” (IDC), total heart failure (HF) and left bundle branch block (LBBB). The condition was discovered 7 years ago, when first symptoms of HF appeared. An invasive diagnostics was performed in 2009 – selective coronary angiography ...
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.