Respiratory Labs and Diagnostic Testing Flashcards
What is Oximetery?
The amount of hemoglobin that is carrying oxygen
What percentage is a normal pulse oximetry reading?
Greater than or equal to 95%
What are causes of a decreased pulse oximetry reading?
hypoventilation
atelectasis
pneumothorax
or other lung problems
Where can pulse oximetry probes be placed?
ear lobes
fingers
toes
what is the purpose of pulse oximetry monitoring in the inpatient setting?
to titrate O2 levels
can be used continuously or intermittently
What types of laboratory testing can be done on sputum samples
culture and gram stain
cytology
AFB ( Acid-Fast Bacillus)
What types of radiology studies may be ordered for a patient with lung problems?
CXR
CT
MRI
PET Scan
What does expectorate mean?
Coughing up sputum
True or False: A sputum sample can be collected by a patient spitting saliva in a cup?
False: Sputum is expectorated from the lungs not saliva from the mouth or throat
What disease process does an AFB culture test for?
Active Tuberculosis
What type of cells does a sputum cytology culture look for?
Cancer Cells
How do you collect a sputum sample?
In a sterile container, sent to the lab ASAP, collected first thing in the morning, can be suctioned if patient/client unable to expectorate.
True or False: Sputum can be suctioned from the patient and sent for a culture?
True
What are the most common views ordered for a CXR
PA and Lateral
What is important to teach your patients about preparing for a CXR?
remove any metal between the neck and waist
What labs must be checked before a patient receives CT contrast?
BUN/Creatine
Why is it important to check a BUN/Creatine level before a patient receives contrast?
To ensure that their kidneys are working properly, and that their body will be able to filter the contrast out of the body as waste