Respiratory system care Flashcards
where can a blood specimen come from?
Vein
Fingerstick
Artery
types of labs and diagnostic test
Blood specimen
Urine, stool, sputum
X-ray and scans
Oximetry
The amount of hemoglobin, carrying oxygen
Commonly used to titrate oxygen levels in hospitalized patients
normal value of oxygen
Greater than or equal to 95%
What can decreased oxygen levels indicate?
hypoventilation
Atelectasis
Pneumothorax
how can oxygen be measured?
Intermittent or continuous
sputum studies
Culture and sensitivity
Cytology – cancer
Acid fast bacillus – active TB
when collecting a sputum
Sterile container
Send to lab ASAP
Sputum not saliva
what time is best to collect a sputum specimen?
Morning
Chest x-ray
remove metal between neck and waist
Common views are PA and lateral
2D picture of lung
CT scan
Shows structures in cross-section
With or without contrast
May require sedation, if can’t lie still
Hard table, scanner will revolve around body
CT contrast
Fills hollow organs and blood vessels
Highlights internal structures
Can be iodine based
contrast nursing care
Address allergy to iodine, shellfish
Assess BUN/CR – can cause kidney damage
Tell patient they will feel a warm flush with injection
Force, fluids afterward
MRI
Assesses lesions difficult to see in CT - lung apex
Distinguishes, vascular and nonvascular structures
Remove metal
MRI nursing care
Is closed MRI – notify patient and may need to sedate
is MRI contrast iodine based?
No
PET scan
uses radioactive tracer injected into IV to look for disease/cancer
difference between PET scan and others
PET scan – looks at function not structure
Blood flow, oxygen use, sugar uptake
TB test
Skin test
Interferon – gamma, release assay blood test (IGRA)
how is TB injected?
Intradermally
10 to 15°
Look for bleb under skin
Bronchoscopy
bronchi are visualized
Obtains biopsy specimen for treatment
Nasopharynx is anesthetized
no dressing needed
nursing care of before bronchoscopy
Sign consent
NPO for 6–12 hours before test
Give sedative
nursing care after bronchoscopy
Keep NPO until gag reflex returns
Expected finding – blood tinged mucus, document and monitor
Is biopsy done, monitor for hemorrhage, or a pneumothorax
What is a sign of a hemorrhage or a pneumothorax?
Unexplained increased heart rate