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How Does An Echocardiogram Function
Doppler effect: The echocardiogram utilizes ultrasound and a principle called the doppler effect. Doppler effect means sound waves are reflected at different velocities and this information is electronically transformed to allow visualization of structural details and provide information about blood flow velocities. ...Read moreSee 1 more doctor answer
Bounces sound waves: An echocardiogram is simply an ultrasound. Like any other ultrasound, including those used by fishing boats, the fundamental principle is to send high-frequency sound waves into the target (heart) and measure the time it takes to return to the transducer (echo). The resulting picture is a measure of the distance traveled and the physical properties of the material it passed through. ...Read moreSee 1 more doctor answer
Electrical system: A defibrillator causes all myocardial (heart) cells to become depolarized at the same time. This extinguishes the abnormal arrhythmia, and allows the natural cardiac pacemaker to kick back in. This requires a large electrical current, to make sure all myocardial cells get activated at the same time. ...Read moreSee 1 more doctor answer
Echocardiogram: Acoustic waves (in the mega-hz so they can't be heard) are sent from the probe and the time the reflected wave takes to return is measured. This is similar to sonar. For moving structures, like valves and blood, the machine takes advantage of the doppler effect (notice the change in tone of the train whistle as it passes a station) to measure velocities. ...Read more
Ask your Doctor: Echocardiogram is an ultrasound exam of your heart. it looks at the heart valves, heart muscles, blood vessels, and how they function. The exam is used when the doctor things there may be a problem with your heart muscle, valves, or blood vessels. There are too many indications to list, but your doctor or a cardiologist can determine if you should get one. ...Read more
Electrical recording: In the same way an ekg measures electrical activity from the heart, an EEG measures activity from the brain. Electrodes are placed on the scalp and the patient lies quietly while brainwaves are recorded. Sometimes, hyperventilation and/or flashing lights are used to evoke different responses. It is important to relax, as electrical activity from muscle can swamp the signals from the brain. ...Read moreSee 2 more doctor answers
Depends: Certain body types such as morbid obesity can cause poor images. Pts with COPD will also result in poor pictures as well. Some remenants from when we were in our moms uterus can also persist and be picked up on ultrasound. Most of the time its benign. Other types of artifacts may be due to technique of the technician and ofcourse the experience of the reader. ...Read more
Abnormal LFT's: Elevated Liver function tests may occur for a variety of issues form Fatty infiltration (hepatic steatosis), viral illnesses such as the hepatitis viruses, Alcoholism, increased use of medications that metabolize through the liver (such as Acetaminophen), cirrhosis, biliary disease, gallbladder disease, etc, etc. Get an evaluation for the most likely cause if your LFT's are elevated. ...Read moreSee 1 more doctor answer
TEE: A transesophageal echocardiogram (tee) uses ultrasound on a probe that can be easily slid down the throat and esophagus to lay immediately behind the heart. Because it is so close to the heart, very high resolution ultrasound images of the heart can be obtained. When a transthoracic echo (tte, or outside echo) doesn't show the heart structures, tee is very useful. ...Read more
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