NCCAOM - biomed- tests
About this set
Created by:
cristinanda on September 25, 2010
Subjects:
lab tests and diagnostic procedures
Description:
physical stuff from chen chap. 2
Classes:
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14 terms
Terms | Definitions |
|---|---|
 CT, CAT - x-ray computed tomography | imaging of brain, spine, organs, blood vessels, sinuses, bones, fractures, tumors, ct-guided biopsy |
| MRI - magnetic resonance imaging | high resolution images of the brain spinal abnormalities (tumor, abscess), edema, hemorrhage, blodd flow, infarcgts, tumors, infection, internal organ structure, more soft tissue-oriented |
| ultrasound (sonogram) | produces a map of the position, size, form, and nature of soft tissue organs. Real-time images show motions as in the fetus or heart. blood vessels, blood flow |
| EMG - electromyography | used to differentiate nerve and muscle disease and to evaluate neuromuscular disorders: myasthenia gravis, muscular dystophy... |
| ECG - electrocardiogram | records the electical umpulsed that stimulat the heart to contract. |
| ECG - P wave | atrial contraction started by impulse from the SA node. absent or altered = cardiac impulse originates outside SA node. |
| ECG - PR interval | time required for the impulse to travel from the SA node to the atrioventricular node. shortened= shortcut to ventricle (WPW syndrome). lengthened= 1st degree heart block, delay in the av node. |
| ECG - QRS complex | ventricular contraction widened= abnormal ventricular depolarization time |
| ECG - ST segment | time btwn completion fo ventricular depolarization and beginning of repolarization. Transient ischemia (angina), muscle injury (early-stage of myocardial infarction) |
| ECG - T wave | ventricular repolariztion |
| ECG - QT interval | duration of ventricular repolarization varies with age, sex, heart rate and meds |
| ECG - U wave | repolarization of the purkinje fibers within ventricles |
| Spinal Tap - applications | 1) diagnosis 4 diseases: meningitis, subarachnoid hemorrhage, CNS malignancy & multiple sclerosis/autoimmune disease 2) introduce anesthetics 3) ID pathogens in acute or chronic inflammation 4) ID extent of brain infarction/stroke |
| Spinal Tap - contraindications | infection at puncture site, bleeding diathesis, raised intracranial pressure, & Chiari I malformation obstuction CSF. |
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