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 'Bicycle Stress Echocardiography' 
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Result : Searchterm 'Bicycle Stress Echocardiography' found in 1 term [] and 4 definitions [])
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Bicycle Stress EchocardiographyMRI Resource Directory:<br> - Cardiac -
 
Bicycle stress echocardiography can be used instead of treadmill. Bicycle exercise is particularly useful for patients with valvular heart disease or for evaluated pulmonary artery pressures. It is also used as a substitute for treadmill exercise testing when the heart performance at each stage of exercise needs to be assessed and the patient is capable of bicycle exercise. Bicycle stress echocardiography has no additional risk compared to routine exercise.
See also M-Mode Echocardiography.
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EchocardiographyMRI Resource Directory:<br> - Cardiac -
 
Echocardiography is the ultrasound examination of the heart. Depending on the used ultrasound system, echocardiograms can be two-dimensional slices or 3D real-time images of the heart. Based on the ultrasound principles the direction and speed of blood flow can be utilized e.g., to diagnose a leaking or stenosed valve or to identify intracardiac shunts.

Different types of echocardiography:
point transthoracic echocardiography (TTE);
point transesophageal echocardiography (TEE);
point contrast echocardiogram (CE);
point stress echocardiogram.

The transthoracic echocardiogram (images are taken through the chest wall) is a non-invasive, highly accurate and quick assessment of the overall health of the heart.
A more invasive method is to insert a specialized scope containing an echocardiography transducer (TEE probe) into the esophagus, and record images from there. The advantages are clearer images, since the transducer is closer to the heart.
Contrast echocardiogram (CE) is already a valuable tool to delineate endocardial borders, direct invasive procedures, detect intracardiac shunts, assess myocardial perfusion and viability, and quantify coronary flow reserve and blood volumes (see also hemoglobin). The mechanism of microbubble CE is based on the physical principles of rarefaction and compression, leading to volume pulsations of microbubbles, and it is this change that results in CE signal.
Stress echocardiograms are echocardiography exams used for detection of coronary artery disease.
See also Diastole, Bicycle Stress Echocardiography, Resistive Index, and M-Mode Echocardiography.
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• View the news results for 'Echocardiography' (6).



 Further Reading:
  Basics:
The First Long-Lasting Use of Echocardiography: A Result of a False AdvertisementOpen this link in a new window
2008   by imaging.onlinejacc.org    
AMERICAN SOCIETY OF ECHOCARDIOGRAPHY - RECOMMENDATIONS FOR A STANDARDIZED REPORT FOR ADULT TRANSTHORACIC ECHOCARDIOGRAPHYOpen this link in a new window
   by www.ncbi.nlm.nih.gov    
Amer ican Society of Echocardiography - Recommendations for Quantification of Doppler Echocardiography(.pdf)Open this link in a new window
   by www.asecho.org    
Principles in Doppler EchocardiographyOpen this link in a new window
   by www.echoincontext.com    
American Society of Echocardiography Recommendations for Use of Echocardiography in Clinical TrialsOpen this link in a new window
October 2004   by www.asefiles.org    
Recommendations for Evaluation of the Severity of Native Valvular Regurgitation with Two-dimensional and Doppler Echocardiography(.pdf)Open this link in a new window
July 2003   by www.asefiles.org    
ACC/AHA Guidelines for the Clinical Application of EchocardiographyOpen this link in a new window
   by circ.ahajournals.org    
  News & More:
The clinical applications of contrast echocardiography(.pdf)Open this link in a new window
2000   by cme.medscape.com     
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M-Mode EchocardiographyMRI Resource Directory:<br> - Cardiac -
 
M-mode (Motion-mode) ultrasound shows the motion of cardiac structures. M-mode echocardiography records the amplitude and rate of motion of a moving structure in real time by repeatedly measuring the distance of the object from the single transducer at a given moment. The single sound beam is transmitted and reflected signals are displayed as dots of varying intensities, creating lines across the screen. It yields a one-dimensional image, sometimes called an 'ice pick' view of the heart.
M-mode echocardiography is used to detect valvulopathies (calcifications, etc.) and cardiomyopathies (dyskinesis, aneurysm, etc.).
See also Bicycle Stress Echocardiography, Transthoracic Echocardiography, and Transesophageal Echocardiography.
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  News & More:
Placental insufficiency and fetal heart: Doppler ultrasonographic and biochemical markers of fetal cardiac dysfunctionOpen this link in a new window
   by herkules.oulu.fi    
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Stress EchocardiogramMRI Resource Directory:<br> - Cardiac -
 
Stress echocardiograms are used for detection of coronary artery disease, or to determine the cardiac performance. Stress echocardiograms are less performed to evaluate pulmonary artery pressures, pulmonary hypertension or the significance of valvular heart disease.
Stress increases the degree to which the heart contracts. After a myocardial infarction there will be a region of the heart muscle that contracts abnormal at rest. This area may worsen with stress. A coronary artery blockage most often do not impairs the function of the heart at rest. With stress, a region of the heart does not receive enough blood to work effectively and wall motion abnormalities occur. The echocardiographer compares rest and exercise and can determine the presence and severity of a coronary artery blockage.

Stress echocardiograms involve:
list_point bicycle stress echocardiography;
list_point dobutamine stress echocardiography;
list_point transthoracic echocardiography.
A bicycle stress echocardiogram involves transthoracic echocardiography performed at the rest baseline and after or during different stages of physical exercise.
A dobutamine stress echocardiography uses the drug dobutamine instead physical exercise.
Transthoracic echocardiograms are routinely performed during stress and rest.
Cardiovascular stress represents a minimal risk to the patient.
See also Transesophageal Echocardiography, Echocardiography, M-Mode, Curved Transducer, Doppler Ultrasound, History of Ultrasound and History of Ultrasound Contrast Agents.
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 Further Reading:
  Basics:
Contrast Stress EchocardiographyOpen this link in a new window
   by www.circ.ahajournals.org    
  News & More:
Non-invasive diagnosis of coronary artery disease by quantitative stress echocardiography: optimal diagnostic models using off-line tissue Doppler in the MYDISE study(.pdf)Open this link in a new window
   by eurheartj.oxfordjournals.org    
US Resources  
Ultrasound Therapy - Endoscopic - Resources pool - Abdominal - Preferential Sites - Research Labs
 
Transthoracic EchocardiographyMRI Resource Directory:<br> - Cardiac -
 
(TTE) Transthoracic echocardiography is a common type of cardiac ultrasound and is used to evaluate the size and function of the heart.

Indications:
list_point assessment of the cardiac size, shape and function;
list_point pathological changes of the myocardium;
list_point function of the cardiac valves;
list_point pericardial fluid;
list_point congenital heart defects.
TTE requires no sedation or special patient preparation. After the application of ECG electrodes and ultrasound couplant, the probe is maneuvered over the chest in the area adjacent to the breast bone and under the left breast, to provide the different views of the heart. Usually the images will be obtained lying relaxed on the left side. Other views can be sampled lying on the back with the knees bent, or sitting in an upright position.
See also Bicycle Stress Echocardiography and Transesophageal Echocardiography.
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 Further Reading:
  Basics:
EchocardiographyOpen this link in a new window
2006   by en.wikipedia.org    
  News & More:
Non-invasive diagnosis of coronary artery disease by quantitative stress echocardiography: optimal diagnostic models using off-line tissue Doppler in the MYDISE study(.pdf)Open this link in a new window
   by eurheartj.oxfordjournals.org    
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