LO3 Labs and Xrays

Question 1

Phlebotomy

Answer 1

the drawing of blood, sometimes referred to venipuncture

Question 2

Arterial blood gases (ABG’s)

Answer 2

To detect and identify the causes of acid-base and oxygenation disturbances

Question 3

Blood chem

Answer 3

Can look at organ function, electrolyte function, organ damage

Question 4

Point of Care Testing

Answer 4

any testing conducted outside a lab, in a hospital, in a clinic or by a health care organization providing ambulatory care

Question 5

POCT

Advantages

Answer 5

Quick, results are almost immediately available
Small volume sample
Portable devices with wide menu options
Unprocessed specimen
Lean
Available to wide variety of circumstances and locations

Question 6

POCT

disadvantages

Answer 6

Reliability of results  
Cost  
Management of POCT is challenging  
Maintaining personnel  
Different POCT use different methods – easy to confuse  
Not comparable to central lab testing  
Error management

Question 7

Radiology

Answer 7

Used to screen, diagnosis, and monitor treatment of various conditions

Question 8

Ultrasound

Answer 8

Uses high frequency sound waves

Visualizes the organs and soft tissues

Question 9

Interventional Radiology

Answer 9

Interventional radiology uses imaging to help guide the doctor when inserting catheters, wires, and other small instruments and tools into blood vessels, organs, as part of a surgical procedure or a diagnostic test

Question 10

X‐Rays

Answer 10

Electromagnetic waves, a form of radiation
Dense structures will appear white
Tissues absorb x-ray and are harder to see
Air shows up as black so lungs should be black
Muscle and fat appear grey

Question 11

CT Scans

Answer 11

Computed tomography scan  
A series of x-ray views  
Cross sectional views 
Uses radiation to develop the images  
Scans take only a few minutes

Question 12

MRI’s

Answer 12

Magnetic resonance imaging

A combination of magnetic field and different radio frequencies allow a specialized computer to generate excellent pictures of the inside of the body

The scan takes 30-40 minutes depending on what needs to be scanned

Produces thousands of images into a 3D view of the area

No ionizing radiation is used

Question 13

CT Scan vs. MRI

Answer 13

CT Scan 
Uses x-rays  
Unable to show tendons & ligaments  
Shows organ tears & injury sooner  
Broken bones are better seen  
Better at visualizing pneumonia, cancer,  
abnormal chest x-rays  
Better at visualizing lungs and organs of mediastinum  

MRI  
Uses magnets & radio waves  
Shows ligaments and tendons well  
Better for looking at spinal cord  
Better at looking for brain tumor