Wk 1 Respiratory Labs and Diagnostics Flashcards
What is oximetry referring to?
The amount of hemoglobin that is carrying oxygen
Decreased pulse ox could mean…
Hypoventilation, atelectasis, pneumothorax,
Oximetry is commonly used to __ oxygen levels in hospitalized patients
titrate
You can also put an pulse ox on an __ __ or __
ear lobe or toe
Three types of sputum tests
C&S, Cytology, and AFB (acid fast bacillus)
A C&S sputum should not be…
saliva
A C&S sputum should be from where?
The throat
What time is best to get a C&S sputum?
Early am
For a chest x-ray, the patient needs to remove the metal on their body from where?
Between neck and waist
What does CT scan stand for?
Computed tomography
Describe the experience of the CT scan
Hard table, scanner revolves around body, and makes a clicking sound
CT scans can be with or without
contrast
What is contrast?
A medium that is injected into the patient’s IV to help highlight their internal structures
Contrast is typically __ based
Iodine
Contrast is nephro__
nephrotoxic, hard on the kidneys
Two labs you need to look at if a patient is going for a CT with contast
creatinine and BUN
A way you can tell if a patient might have a reaction to the iodine-based contrast for a CT is by asking them what?
If they are allergic to shellfish
When the contrast is injected the patient will feel a __ __ all over their body
warm flush
What should you encourage after the CT and why?
Increased fluid PO intake to flush to contrast out of the kidneys
What does MRI stand for?
magnetic resonance imaging
What is a MRI used for?
Assess lesions that are difficult to asses by CT and for distinguishing vascular from nonvascular structures
MRI does use a __ medium
contrast
What is different about the contrast medium for MRI?
It’s not iodine based
If the MRI is “closed” what is a concern for the patient?
Claustrophobia