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Assessment of wasted myocardial work: a novel method - AJP
... curve was obtained by pooling LVP data from a number of patients with different pathologies, and for each patient, the durations of isovolumic contraction (IVC), LV ejection, and isovolumic relaxation (IVR), defined by echocardiography, were set to the same arbitrary value by stretching or compressi ...
... curve was obtained by pooling LVP data from a number of patients with different pathologies, and for each patient, the durations of isovolumic contraction (IVC), LV ejection, and isovolumic relaxation (IVR), defined by echocardiography, were set to the same arbitrary value by stretching or compressi ...
an ultrasound technique Mitral valve movement - Heart
... slope becomes flattened and the position of the valve at the end of the diastole is much more open than normal (Edler, I966). Hence, when ventricular systole occurs, the cusps are brought together from a greater distance. This is probably a factor responsible for the increased intensity of the first ...
... slope becomes flattened and the position of the valve at the end of the diastole is much more open than normal (Edler, I966). Hence, when ventricular systole occurs, the cusps are brought together from a greater distance. This is probably a factor responsible for the increased intensity of the first ...
Full Text - Jentashapir Journal of Health Research
... threads and all of them had a smoking history of at least five years. They had not smoked for eight hours before the study, in order to avoid possible residual effects. People with a history of hypertension, obesity, diabetes and hyperlipidemia, were excluded. In these cases coronary flow velocity r ...
... threads and all of them had a smoking history of at least five years. They had not smoked for eight hours before the study, in order to avoid possible residual effects. People with a history of hypertension, obesity, diabetes and hyperlipidemia, were excluded. In these cases coronary flow velocity r ...
Left ventricular long-axis diastolic function is
... with 1.18p0.23 ; P 0.01) (where E-wave is peak velocity of early-diastolic mitral inflow and A-wave is peak velocity of mitral inflow during atrial contraction) and long-axis diastolic velocities (ETDE/ATDE ratio 2.2p1.2 compared with 1.1p0.3 ; P 0.01) (where ETDE and ATDE represent peak early- and ...
... with 1.18p0.23 ; P 0.01) (where E-wave is peak velocity of early-diastolic mitral inflow and A-wave is peak velocity of mitral inflow during atrial contraction) and long-axis diastolic velocities (ETDE/ATDE ratio 2.2p1.2 compared with 1.1p0.3 ; P 0.01) (where ETDE and ATDE represent peak early- and ...
Characterization of heart and pulmonat vacular
... Mohammed Elfadhil and Mr. Abubaker Y. Elamin, who help me so much in data analysis setting and finishing of my thesis ...
... Mohammed Elfadhil and Mr. Abubaker Y. Elamin, who help me so much in data analysis setting and finishing of my thesis ...
Clinical Guideline
... should not be used as an initial test in low-risk patients who have an interpretable ECG and at least moderate physical functioning or no disabling comorbidity (Grade: strong recommendation; low-quality evidence). Recommendation 9: The organizations recommend pharmacologic stress with radionuclide m ...
... should not be used as an initial test in low-risk patients who have an interpretable ECG and at least moderate physical functioning or no disabling comorbidity (Grade: strong recommendation; low-quality evidence). Recommendation 9: The organizations recommend pharmacologic stress with radionuclide m ...
Short QT Interval: A Novel Predictor of Androgen
... During the day before the competition, measurements were obtained from a 12-lead electrocardiogram at a article speed of 50 mm/s after a 20-minute rest period. With calipers on printed ECGs, the QT interval of each lead was measured from the beginning of the QRS complex to the visual return of the T ...
... During the day before the competition, measurements were obtained from a 12-lead electrocardiogram at a article speed of 50 mm/s after a 20-minute rest period. With calipers on printed ECGs, the QT interval of each lead was measured from the beginning of the QRS complex to the visual return of the T ...
Titin isoform switching is a major cardiac adaptive response in
... The four bears were hand raised, human socialized, and trained for echocardiography. The bears have a comfortable routine of handling and were fully conscious for this study. These unanesthetized bears were used to avoid the potential confounding effects of anesthesia on in vivo assessment of cardia ...
... The four bears were hand raised, human socialized, and trained for echocardiography. The bears have a comfortable routine of handling and were fully conscious for this study. These unanesthetized bears were used to avoid the potential confounding effects of anesthesia on in vivo assessment of cardia ...
Echocardiographic left ventricular dimensions
... pressure in I5 normal subjects, in I5 patients with left ventricular volume or pressure overload without aortic stenosis, and in 23 patients with aortic stenosis. All these patients had a mean rate of circumferential fibre shortening greater than I.O circumference per second and were regarded as hav ...
... pressure in I5 normal subjects, in I5 patients with left ventricular volume or pressure overload without aortic stenosis, and in 23 patients with aortic stenosis. All these patients had a mean rate of circumferential fibre shortening greater than I.O circumference per second and were regarded as hav ...
A clinical approach to the assessment of left ventricular diastolic
... abnormality.14 15 The distinction of normal versus pseudonormal filling is difficult using the mitral inflow alone and in most patients other parameters will be necessary to complete the assessment. Preload alteration Reducing left ventricular preload, using glyceryl trinitrate or the Valsalva manoe ...
... abnormality.14 15 The distinction of normal versus pseudonormal filling is difficult using the mitral inflow alone and in most patients other parameters will be necessary to complete the assessment. Preload alteration Reducing left ventricular preload, using glyceryl trinitrate or the Valsalva manoe ...
Doppler Echocardiography in Dilated Cardiomyopathy: Diastolic
... dilated cardiomyopathy (DCM), and systolic and diastolic dysfunctions generally coexist during the clinical course of DCM, left ventricular ejection fraction (LV-EF) as an entirely systolic parameter is commonly used to assess LVfunction in patients with dilated cardiomyopathy. Traditional parameter ...
... dilated cardiomyopathy (DCM), and systolic and diastolic dysfunctions generally coexist during the clinical course of DCM, left ventricular ejection fraction (LV-EF) as an entirely systolic parameter is commonly used to assess LVfunction in patients with dilated cardiomyopathy. Traditional parameter ...
What Do You Mean by Aortic Valve Area: Geometric Orifice Area
... between Doppler echocardiography and catheterization is mostly related to the aortic cross-sectional area (see Eqn. (11)), whereas the difference between Doppler echocardiography and planimetry is essentially dependent upon the valve geometry (see Eqn. (7)). Because these anatomic characteristics va ...
... between Doppler echocardiography and catheterization is mostly related to the aortic cross-sectional area (see Eqn. (11)), whereas the difference between Doppler echocardiography and planimetry is essentially dependent upon the valve geometry (see Eqn. (7)). Because these anatomic characteristics va ...
Longitudinal Common Carotid Artery Wall Motion
... cause coronary events which in most cases are found not to be due to occlusive lesions. Plaque rupture due to plaques with a thin fibrous cap and large lipid content is considered to be responsible for the majority of fatal myocardial infarctions and may be accompanied by thrombus formation. Other p ...
... cause coronary events which in most cases are found not to be due to occlusive lesions. Plaque rupture due to plaques with a thin fibrous cap and large lipid content is considered to be responsible for the majority of fatal myocardial infarctions and may be accompanied by thrombus formation. Other p ...
Blood Flow Hemodynamics, Cardiac Mechanics, and Doppler
... OPTIMIZING COLOR FLOW DOPPLER CONTROLS Modern echocardiography instruments have important controls for optimizing the color flow Doppler examination Figures 3.4, 4.12 . Each laboratory should implement internal standards that conform to the recommended instrument settings guidelines. In general, the ...
... OPTIMIZING COLOR FLOW DOPPLER CONTROLS Modern echocardiography instruments have important controls for optimizing the color flow Doppler examination Figures 3.4, 4.12 . Each laboratory should implement internal standards that conform to the recommended instrument settings guidelines. In general, the ...
Triphasic mitral inflow velocity with mid
... obtained by pulsed wave Doppler echocardiography usually consist of 2 forward flow velocity peaks in sinus rhythm: early diastolic peak from early rapid filling (E) and late filling peak from atrial contraction (A). However, mitral inflow may have additional forward flow velocity during mid-diastole ...
... obtained by pulsed wave Doppler echocardiography usually consist of 2 forward flow velocity peaks in sinus rhythm: early diastolic peak from early rapid filling (E) and late filling peak from atrial contraction (A). However, mitral inflow may have additional forward flow velocity during mid-diastole ...
Natural history of ventricular premature contractions in
... Aims Premature ventricular contractions (PVCs) are thought to be innocent in children with normal hearts, especially if they disappear during exercise. The aim of our study was to study the natural history of PVCs in childhood and whether there is a difference between PVCs originating from the right ...
... Aims Premature ventricular contractions (PVCs) are thought to be innocent in children with normal hearts, especially if they disappear during exercise. The aim of our study was to study the natural history of PVCs in childhood and whether there is a difference between PVCs originating from the right ...
Magnitude of myocardial dysfunction is greater in painful than in
... From the Departmentof Medicine,CardiologyUnit, HammersmithHospital, London,England,UnitedKingdom. ...
... From the Departmentof Medicine,CardiologyUnit, HammersmithHospital, London,England,UnitedKingdom. ...
Cardiovascular Screening in College Athletes
... and 5 (6%) had findings that warranted further diagnostic evaluation. Table 3 shows the ECG-integrated screening findings that suggested abnormality. This strategy detected abnormalities in 10 of the 11 athletes with TTE-detected abnormalities; the remaining participant had mitral valve prolapse and ...
... and 5 (6%) had findings that warranted further diagnostic evaluation. Table 3 shows the ECG-integrated screening findings that suggested abnormality. This strategy detected abnormalities in 10 of the 11 athletes with TTE-detected abnormalities; the remaining participant had mitral valve prolapse and ...
51st Annual Meeting of the Association for European
... organisers reserve the right to alter the programme if and when deemed necessary. The Congress Organisers act as agents only in securing hotels, transport and travel services, and shall in no event be liable for acts or omissions in the event of injury, damage, loss, accident delay or irregularity o ...
... organisers reserve the right to alter the programme if and when deemed necessary. The Congress Organisers act as agents only in securing hotels, transport and travel services, and shall in no event be liable for acts or omissions in the event of injury, damage, loss, accident delay or irregularity o ...
Left Atrial Volume Combined With Atrial Pump Function
... persistent AF), valvular heart disease (including mitral annular calcification), heart failure, ischemic heart disease, cardiomyopathy, cardiac surgery, thyroid disease, or pulmonary disease; and (6) age between 40 and 80 years. Control subjects were recruited from a clinical health examination in A ...
... persistent AF), valvular heart disease (including mitral annular calcification), heart failure, ischemic heart disease, cardiomyopathy, cardiac surgery, thyroid disease, or pulmonary disease; and (6) age between 40 and 80 years. Control subjects were recruited from a clinical health examination in A ...
fellowship training program - Boston Children`s Hospital
... Holter studies. Although the more senior fellows on this service are primarily responsible for intracardiac electrophysiology studies, ablations and intraoperative procedures, the core fellow participates in these procedures as well. One month of electrophysiology occurs during the first eighteen mo ...
... Holter studies. Although the more senior fellows on this service are primarily responsible for intracardiac electrophysiology studies, ablations and intraoperative procedures, the core fellow participates in these procedures as well. One month of electrophysiology occurs during the first eighteen mo ...
Diagnosis of Stable Ischemic Heart Disease: Summary of a Clinical
... American College of Physicians (ACP), American Association for Thoracic Surgery (AATS), Preventive Cardiovascular Nurses Association (PCNA), Society for Cardiovascular Angiography and Interventions (SCAI), and Society of Thoracic Surgeons (STS) guideline for the diagnosis and management of patients ...
... American College of Physicians (ACP), American Association for Thoracic Surgery (AATS), Preventive Cardiovascular Nurses Association (PCNA), Society for Cardiovascular Angiography and Interventions (SCAI), and Society of Thoracic Surgeons (STS) guideline for the diagnosis and management of patients ...
A Rare Case of Congenital Coronary Artery Fistula Evaluated by
... In a patient with coronary artery fistula extending from anterior aortic sinus to posterosuperior wall of right atrium, Magnetic Resonance Imaging was able to accurately demonstrate dilatation of the involved coronary artery, the tortuous nature of the dilated fistula, blood flow within the fistula ...
... In a patient with coronary artery fistula extending from anterior aortic sinus to posterosuperior wall of right atrium, Magnetic Resonance Imaging was able to accurately demonstrate dilatation of the involved coronary artery, the tortuous nature of the dilated fistula, blood flow within the fistula ...
Echo-Doppler assessment of diastole: flow, function and
... enough to cause LV pressure to continue to decline despite an increase in LV volume. This fall in pressure produces an early diastolic pressure gradient from the LA that extends to the LV apex and that accelerates blood out of the LA, producing early diastolic flow that quickly propagates to the apex ...
... enough to cause LV pressure to continue to decline despite an increase in LV volume. This fall in pressure produces an early diastolic pressure gradient from the LA that extends to the LV apex and that accelerates blood out of the LA, producing early diastolic flow that quickly propagates to the apex ...
Echocardiographic Evaluation ofLeft Ventricular Size
... SUMMARY We used M-mode echocardiography to measure left ventricular dimensions in diastole (Dd) and systole (Ds) and to assess ventricular performance by computing the percent dimensional shortening (%AD) and the normalized rate of dimensional shortening (Vd) during isometric and isotonic exercise i ...
... SUMMARY We used M-mode echocardiography to measure left ventricular dimensions in diastole (Dd) and systole (Ds) and to assess ventricular performance by computing the percent dimensional shortening (%AD) and the normalized rate of dimensional shortening (Vd) during isometric and isotonic exercise i ...
Echocardiography
![](https://commons.wikimedia.org/wiki/Special:FilePath/Ventricular_Septal_Defect.jpg?width=300)
Echocardiogram, often referred to as a cardiac echo or simply an echo, is a sonogram of the heart. (It is not abbreviated as ECG, an abbreviation for an electrocardiogram.) Echocardiography uses standard two-dimensional, three-dimensional, and Doppler ultrasound to create images of the heart.Echocardiography has become routinely used in the diagnosis, management, and follow-up of patients with any suspected or known heart diseases. It is one of the most widely used diagnostic tests in cardiology. It can provide a wealth of helpful information, including the size and shape of the heart (internal chamber size quantification), pumping capacity, and the location and extent of any tissue damage. An echocardiogram can also give physicians other estimates of heart function such as a calculation of the cardiac output, ejection fraction, and diastolic function (how well the heart relaxes).Echocardiography can help detect cardiomyopathies, such as hypertrophic cardiomyopathy, dilated cardiomyopathy, and many others. The use of Stress Echocardiography may also help determine whether any chest pain or associated symptoms are related to heart disease. The biggest advantage to echocardiography is that it is noninvasive (doesn't involve breaking the skin or entering body cavities) and has no known risks or side effects.Not only can an echocardiogram create ultrasound images of heart structures, but it can also produce accurate assessment of the blood flowing through the heart by Doppler echocardiography, using pulsed or continuous wave Doppler ultrasound. This allows assessment of both normal and abnormal blood flow through the heart. Color Doppler as well as spectral Doppler is used to visualize any abnormal communications between the left and right side of the heart, any leaking of blood through the valves (valvular regurgitation), and to estimate how well the valves open (or do not open in the case of valvular stenosis). The Doppler technique can also be used for tissue motion and velocity measurement, by Tissue Doppler echocardiography.Echocardiography was also the first ultrasound subspecialty to use intravenous contrast. (See Contrast Echocardiography)Echocardiography is performed by cardiac sonographers, cardiac physiologists (UK) or doctors trained in echocardiography.