Guidelines and Standards for Performance of a Pediatric
... based on assessment of the trainee’s skills by the director of the pediatric echocardiography laboratory. Direct observation of the trainee during performance of echocardiograms provides information about imaging skills and understanding of the ultrasound instruments. The maintenance of a log of ech ...
... based on assessment of the trainee’s skills by the director of the pediatric echocardiography laboratory. Direct observation of the trainee during performance of echocardiograms provides information about imaging skills and understanding of the ultrasound instruments. The maintenance of a log of ech ...
Guidelines and Standards for Performance of a Pediatric
... based on assessment of the trainee’s skills by the director of the pediatric echocardiography laboratory. Direct observation of the trainee during performance of echocardiograms provides information about imaging skills and understanding of the ultrasound instruments. The maintenance of a log of ech ...
... based on assessment of the trainee’s skills by the director of the pediatric echocardiography laboratory. Direct observation of the trainee during performance of echocardiograms provides information about imaging skills and understanding of the ultrasound instruments. The maintenance of a log of ech ...
Is right ventricular outflow tract pacing superior to right ventricular
... but that there was no significant difference between the two groups. This conclusion correlated to that of the Protect-Pace study [11]. However, more sensitive parameters, such as Sm [13] and GLS, indicated that RVOT pacing had a protective effect on the LV systolic function though RVOT pacing did n ...
... but that there was no significant difference between the two groups. This conclusion correlated to that of the Protect-Pace study [11]. However, more sensitive parameters, such as Sm [13] and GLS, indicated that RVOT pacing had a protective effect on the LV systolic function though RVOT pacing did n ...
ENDOCARDIAL SCLEROSIS IN INFANTS AND CHILDREN* We
... inflammatory are complete or partial occlusion of the blood vessels, atrophy associated with hyaline or fatty degeneration of muscle fibers, fibroblastic proliferation, thickening of the endocardium, and cicatrization near the atretic valves7,28. Farber and Hubbard suggested that the gross valvular ...
... inflammatory are complete or partial occlusion of the blood vessels, atrophy associated with hyaline or fatty degeneration of muscle fibers, fibroblastic proliferation, thickening of the endocardium, and cicatrization near the atretic valves7,28. Farber and Hubbard suggested that the gross valvular ...
Cardioverter defibrillator therapy in the primary and secondary
... from ventricular fibrillation or who had experienced a symptomatic ventricular tachycardia. Notably, the index ventricular tachycardia had to be associated with either syncope or at least with hemodynamic instability and structural heart disease with a reduced left ventricular ejection fraction (LVE ...
... from ventricular fibrillation or who had experienced a symptomatic ventricular tachycardia. Notably, the index ventricular tachycardia had to be associated with either syncope or at least with hemodynamic instability and structural heart disease with a reduced left ventricular ejection fraction (LVE ...
Cardiac MR Imaging and MR Angiography for Assessment of Com
... results in ventricular septal defect, anterior displacement of the aortic valve, right ventricular outflow tract obstruction, and consequent right ventricular hypertrophy (1,2). Depending on the degree of obstruction of the right ventricular outflow tract, bronchial and aortopulmonary collateral ves ...
... results in ventricular septal defect, anterior displacement of the aortic valve, right ventricular outflow tract obstruction, and consequent right ventricular hypertrophy (1,2). Depending on the degree of obstruction of the right ventricular outflow tract, bronchial and aortopulmonary collateral ves ...
Pericardial Effusion in Cats
... may have been multifactorial. In dogs, PE is an uncommon finding secondary to CHF and occurs rarely with left atrial rupture.3,7,11,12 Thirty two (21.9%) of the cats in this study had neoplasia. Neoplasia was determined to be the sole cause of PE in 8 (5.5%) cats and may have been a contributing fac ...
... may have been multifactorial. In dogs, PE is an uncommon finding secondary to CHF and occurs rarely with left atrial rupture.3,7,11,12 Thirty two (21.9%) of the cats in this study had neoplasia. Neoplasia was determined to be the sole cause of PE in 8 (5.5%) cats and may have been a contributing fac ...
the rural traveler
... Revised Criteria: Acute/Evolving/ Recent MI Typical myocardial necrosis-associated rise & fall of ...
... Revised Criteria: Acute/Evolving/ Recent MI Typical myocardial necrosis-associated rise & fall of ...
Cardiac arrhythmias
... cardiothoracic surgery, cardiomyopathy, myocarditis or pulmonary disease. Patients with the arrhythmia but no organic heart disease are said to have ‘lone atrial fibrillation’. Atrial fibrillation may be paroxysmal and convert to sinus rhythm spontaneously or easily after medical or electrical treatme ...
... cardiothoracic surgery, cardiomyopathy, myocarditis or pulmonary disease. Patients with the arrhythmia but no organic heart disease are said to have ‘lone atrial fibrillation’. Atrial fibrillation may be paroxysmal and convert to sinus rhythm spontaneously or easily after medical or electrical treatme ...
causes of right ventricular failure
... influenced by the position of the IV septum, with the septum being concave toward the LV in normal loading conditions[11]. The RV is thin-walled, usually 1-3mm; hence RV mass is about 1/6th that of the LV in the mature child and adult. The RV volume is greater than that of the LV; the normal range o ...
... influenced by the position of the IV septum, with the septum being concave toward the LV in normal loading conditions[11]. The RV is thin-walled, usually 1-3mm; hence RV mass is about 1/6th that of the LV in the mature child and adult. The RV volume is greater than that of the LV; the normal range o ...
Gated SPECT myocardial perfusion imaging in
... Conclusions: An abnormal gated SPECT-MPI in this group of patients was not associated with the presence of cardiovascular risk factors. The changes on the ECG pattern were predictors of an abnormal perfusion and along with the electrocardiographical evidence of myocardial hypertrophy were also predi ...
... Conclusions: An abnormal gated SPECT-MPI in this group of patients was not associated with the presence of cardiovascular risk factors. The changes on the ECG pattern were predictors of an abnormal perfusion and along with the electrocardiographical evidence of myocardial hypertrophy were also predi ...
Guidelines for the report
... in a circular formation. In a healthy adult, these leaflets are usually only a few millimeters thick. With pulmonic stenosis, however, the leaflets have become abnormally thick or, in some cases, fused together obstructing blood flow (Zipes, Libby et al 2007). This obstruction causes the right ventr ...
... in a circular formation. In a healthy adult, these leaflets are usually only a few millimeters thick. With pulmonic stenosis, however, the leaflets have become abnormally thick or, in some cases, fused together obstructing blood flow (Zipes, Libby et al 2007). This obstruction causes the right ventr ...
Exercise Tolerance Testing - Cardiac and Stroke Networks in
... 7. Bundle Branch Block and exercise Right Bundle Branch Block (RBBB) It has been found that when RBBB develops during exercise (usually at slower heart rates rather than maximal heart rate) it is likely to be associated with coronary disease or other types of myocardial abnormality. Left Bundle Bran ...
... 7. Bundle Branch Block and exercise Right Bundle Branch Block (RBBB) It has been found that when RBBB develops during exercise (usually at slower heart rates rather than maximal heart rate) it is likely to be associated with coronary disease or other types of myocardial abnormality. Left Bundle Bran ...
Ventricular mass index using magnetic resonance imaging
... measurements of the cardiac ventricles. This study investigated whether a calculated ventricular mass index (VMI) would provide an accurate means of estimating pulmonary artery pressure noninvasively, and compared the results with conventional Doppler echocardiography and invasive measurement. A tot ...
... measurements of the cardiac ventricles. This study investigated whether a calculated ventricular mass index (VMI) would provide an accurate means of estimating pulmonary artery pressure noninvasively, and compared the results with conventional Doppler echocardiography and invasive measurement. A tot ...
Myocardial determinants in regulation of the heart rate | SpringerLink
... Heart rate reflects the balance between the two components of the autonomous nervous system [6]. In situ in humans the frequency of 70 bpm is obtained because of the vagal influence on heart rate, called the vagal tone, and, accordingly, atropine accelerates heart rate. Nevertheless, the situation i ...
... Heart rate reflects the balance between the two components of the autonomous nervous system [6]. In situ in humans the frequency of 70 bpm is obtained because of the vagal influence on heart rate, called the vagal tone, and, accordingly, atropine accelerates heart rate. Nevertheless, the situation i ...
Continuous Systemic Perfusion via Collaterals at Moderate
... built up very gently and gradually, ie, over a period of 5-10 min. A major difference between our and other continuous perfusion techniques is that we maintained nasopharyngeal temperatures above 28°C. As the heart remains beating during arch repair, we believe that myocardial performance may be bet ...
... built up very gently and gradually, ie, over a period of 5-10 min. A major difference between our and other continuous perfusion techniques is that we maintained nasopharyngeal temperatures above 28°C. As the heart remains beating during arch repair, we believe that myocardial performance may be bet ...
- Wiley Online Library
... Detection of the increased electromotiveforce is essential in the diagnosis of left ventricular hypertrophy. However, the amplitude of electrical potential recorded from body surface is influenced by many factors, such as distance from the current source to the electrode and electrical conductivitie ...
... Detection of the increased electromotiveforce is essential in the diagnosis of left ventricular hypertrophy. However, the amplitude of electrical potential recorded from body surface is influenced by many factors, such as distance from the current source to the electrode and electrical conductivitie ...
Temporary Pacemakers
... • Set pacer rate 10 ppm faster than patient’s HR • Decrease mA until capture is lost • Increase output until capture is regained (threshold ...
... • Set pacer rate 10 ppm faster than patient’s HR • Decrease mA until capture is lost • Increase output until capture is regained (threshold ...
Guidelines for the diagnosis and management of Marfan Syndrome
... (isokinetic) exercise increases heart rate and cardiac output but also decreases peripheral resistance. Patients with a dilated aortic root can participate in certain isokinetic activities but at a decreased level of intensity. High intensity, competitive sports should be avoided. ...
... (isokinetic) exercise increases heart rate and cardiac output but also decreases peripheral resistance. Patients with a dilated aortic root can participate in certain isokinetic activities but at a decreased level of intensity. High intensity, competitive sports should be avoided. ...
Cardiovascular Manifestations of Tuberous Sclerosis Complex and
... Obtain MRI of the brain every 1 to 3 years in asymptomatic TSC patients under the age of 25 years to monitor for new occurrence of SEGA. Patients with large or growing SEGA, or with SEGA causing ventricular enlargement but still asymptomatic, should undergo MRI more frequently and the patients and ...
... Obtain MRI of the brain every 1 to 3 years in asymptomatic TSC patients under the age of 25 years to monitor for new occurrence of SEGA. Patients with large or growing SEGA, or with SEGA causing ventricular enlargement but still asymptomatic, should undergo MRI more frequently and the patients and ...
Pulmonary Atresia with Intact Ventricular Septum: Management
... diverse set of anatomical and clinical findings. The incidence is 4.1 per 100,000 live births and is less than 1% of all congenital heart disease. During embryogenesis, PA-IVS is postulated to occur after development of ventricular septum which is later than the development of PA with ventricular se ...
... diverse set of anatomical and clinical findings. The incidence is 4.1 per 100,000 live births and is less than 1% of all congenital heart disease. During embryogenesis, PA-IVS is postulated to occur after development of ventricular septum which is later than the development of PA with ventricular se ...
Measurement of Left Ventricular Diameter In the Dog by Cardiac
... pressure and left ventricular diameter were measured before, during, and after each injection. Data obtained with injections which produced ventricular premature beats were not analyzed. Effects of Varying Heart Rate and Beta-Adrenergic Receptor Activity.—In dogs 1 through 5 an ultrasound transducer ...
... pressure and left ventricular diameter were measured before, during, and after each injection. Data obtained with injections which produced ventricular premature beats were not analyzed. Effects of Varying Heart Rate and Beta-Adrenergic Receptor Activity.—In dogs 1 through 5 an ultrasound transducer ...
Incidence of, predictors for, and mortality associated with malignant
... excluded to avoid including patients with non-acute coronary syndrome troponin elevations and those with NSTEMI not considered catheterization candidates due to significant comorbidities. Demographics, cardiac risk factors, vital signs on admission, Killip class on admission, blood cell counts, basi ...
... excluded to avoid including patients with non-acute coronary syndrome troponin elevations and those with NSTEMI not considered catheterization candidates due to significant comorbidities. Demographics, cardiac risk factors, vital signs on admission, Killip class on admission, blood cell counts, basi ...
Management of Arrhythmias in Heart Failure
... with disease of the conduction system below the atrio-ventricular node, and as such has a higher likelihood of progression to complete atrio-ventricular block [40]. In patients with second degree type II atrioventricular block is common a slowing of impulse conduction on His-Purkinje system, this is ...
... with disease of the conduction system below the atrio-ventricular node, and as such has a higher likelihood of progression to complete atrio-ventricular block [40]. In patients with second degree type II atrioventricular block is common a slowing of impulse conduction on His-Purkinje system, this is ...
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.