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Aortic Valve Stenosis Learning Center

The health care provider will be able to feel a vibration or movement when placing a hand over the person's heart. A heart murmur, click, or other abnormal sound is almost always heard through a stethoscope. There may be a faint pulse or changes i...
Source:ADAM
Date:May 15, 2009
Using a stethoscope, a physician may hear a murmur and other abnormal heart sounds. An ECG, also called an electrocardiogram, records the electrical activity of the heart. This technique and chest x ray can show evidence that the left ventricle is...
Source:Gale Encyclopedia of Medicine
An electrocardiogram (ECG) is a test that records the electrical activity of the heart. See also: Holter monitoring; Stress test.
Source:ADAM
Date:May 2, 2009
Electrocardiography is a commonly used, noninvasive procedure for recording electrical changes in the heart. The record, which is called an electrocardiogram (ECG or EKG), shows the series of waves that relate to the electrical impulses that occur...
Source:Gale Encyclopedia of Surgery
The electrocardiography unit, also called an electrocardiograph, is an apparatus that indirectly measures the heart's electrical activity and records it as a graphic tracing.
Source:Gale Encyclopedia of Nursing and Allied Health
The electrocardiogram (ECG) displays important information about the heart, including the occurrence of a heart attack or lack of oxygen, whether conduction of the heartbeat is disturbed, or its rate or rhythm altered. It is useful as a rapid indi...
Source:Gale Encyclopedia of Public Health
An echocardiogram is a test that uses sound waves to create a moving picture of the heart. The picture is much more detailed than a plain x-ray image and involves no radiation exposure.
Source:ADAM
Date:May 15, 2009
Echocardiography is a diagnostic test that uses ultrasound waves to create an image of the heart muscle. Ultrasound waves that rebound or echo off the heart can show the size, shape, and movement of the heart's valves and chambers as well as the f...
Source:Gale Encyclopedia of Medicine
Echocardiography is a diagnostic test that uses ultrasound waves to produce an image of the heart muscle and the heart's valves.
Source:Gale Encyclopedia of Surgery
During a physical examination, a health care provider studies a patient's body to determine the presence or absence of physical problems. A typical physical examination includes: Inspection (looking at the body; Palpation (feeling the body with ha...
Source:ADAM
Date:February 23, 2009
The health status of populations and of individuals is assessed for many reasons. Assessing needs for care helps guide the allocation of resources— diagnostic assessments guide treatment, prognostic assessments contribute to planning, and assessin...
Source:Gale Encyclopedia of Public Health
A chest x-ray is an x-ray of the chest, lungs, heart, large arteries, ribs, and diaphragm.
Source:ADAM
Date:August 10, 2008
A chest x ray is a procedure used to evaluate organs and structures within the chest for symptoms of disease. Chest x rays include views of the lungs, heart, small portions of the gastrointestinal tract, thyroid gland and the bones of the chest ar...
Source:Gale Encyclopedia of Medicine
A chest x ray is a procedure used to evaluate organs and structures within the chest for symptoms of disease. Chest x rays include views of the lungs , heart , small portions of the gastrointestinal tract, and the bones of the chest area. X rays a...
Source:Gale Encyclopedia of Nursing and Allied Health
A chest x ray is a procedure used to evaluate organs and structures within the chest for symptoms of disease. Chest x rays include views of the lungs, heart, small portions of the gastrointestinal tract, thyroid gland, and the bones of the chest a...
Source:Gale Encyclopedia of Surgery
Transesophageal echocardiography is a diagnostic test using an ultrasound device that is passed into the esophagus of the patient to create a clear image of the heart muscle and other parts of the heart. A tube with a device called a transducer is...
Source:Gale Encyclopedia of Medicine
Transesophageal echocardiography (TEE) is a diagnostic test in which an endoscope with an ultrasound transducer at its tip is inserted into the patient's esophagus by means of a catheter (thin tube). Sound waves are transmitted and received by the...
Source:Gale Encyclopedia of Nursing and Allied Health
A magnetic resonance imaging (MRI) scan of the chest is a noninvasive imaging method that uses powerful magnets and radio waves to create detailed pictures of the chest (thoracic) area. Unlike x-rays and computed tomographic (CT) scans, which use ...
Source:ADAM
Date:August 10, 2008
Magnetic resonance imaging (MRI) is a noninvasive way to take pictures of the body. Unlike x-rays and computed tomographic (CT) scans, which use radiation, MRI uses powerful magnets and radio waves. The MRI scanner contains the magnet. The magneti...
Source:ADAM
Date:October 29, 2008
MRI produces a map of hydrogen atoms distributed in the body. Hydrogen is the simplest element known, the most abundant in biological tissue, and one that can be magnetically polarized. It will align itself within a strong magnetic field, like the...
Source:Gale Encyclopedia of Surgery
Magnetic resonance imaging (MRI) is a unique and versatile medical imaging modality. Doctors can obtain highly refined images of the body's interior using MRI. By using strong magnetic fields and pulses of radio waves to manipulate the natural mag...
Source:Gale Encyclopedia of Nursing and Allied Health
Magnetic resonance imaging (MRI) scanners rely on the principles of atomic nuclear-spin resonance. Using strong magnetic fields and radio waves, MRI collects and correlates deflections caused by atoms into images. MRIs (magnetic resonance imaging ...
Source:Gale Encyclopedia of Neurological Disorders
Magnetic resonance imaging (MRI) is one of the newest diagnostic medical imaging technologies that uses strong magnets and pulses of radio waves to manipulate the natural magnetic properties in the body to generate a visible image. In the field of...
Source:Gale Encyclopedia of Mental Disorders
Magnetic resonance imaging (MRI) is the newest, and perhaps most versatile, medical imaging technology available. Doctors can get highly refined images of the body's interior without surgery, using MRI. By using strong magnets and pulses of radio ...
Source:Gale Encyclopedia of Medicine
Magnetic resonance imaging (MRI) is a diagnostic imaging procedure that uses radio waves, a magnetic field, and a computer to generate images of the anatomy.
Source:Gale Encyclopedia of Children's Health
Magnetic resonance imaging (MRI) is one of the newest, and perhaps most versatile, medical imaging technology available. Doctors can get highly refined images of the body's interior without surgery using MRI. By using strong magnets and pulses of ...
Source:Gale Encyclopedia of Cancer
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