Lab med 31-45 Flashcards
How is theophylline toxicity treated?
Activated charcoal
Hemodialysis
Charcoal hemoperfusion
If a TSH is undetectable what is suspected? What further tests need to be performed?
Hyperthyroid is suspected
Measure FT4 and T3
If an abnormal thyroid status is indicated by a TSH screening what can be measured for verification?
Free T4 and free T3 (normally about 99% bound to albumin or TBG)
If TSH is elevated what is suspected? What further tests need to be performed?
Hypothyroid is suspected
Measure Free T4
If TSH is normal what is suspected? What further tests need to be performed?
No thyroid dysfunction
No further tests
If TSH is subnormal what is suspected? What further tests need to be performed?
Borderline thyroid status
Measure Free T4 and Free T3 –> then do TRH
In a CBC, what are the leukocyte parameters?
Minimum WBC count
Quantify neutrophils, lymphocytes, monocytes, eosinophils, and basophils
In a CBC, what are the platelet parameters?
Count MPV
In a CBC, what are the red cell parameters?
RBC Hgb Hct MCV MCH MCHC RDW
What are factor X inhibitors used for? Examples?
Anticoagulants used to treat Afib and VTE
Rivaroxaban, apixaban, edoxaban
What are health consequences of subclinical hyperthyroidism?
Risk of Afib and osteoporosis
What are health consequences subclinical hypothyroidism?
Myxedema
coma
Heart failure
What are parenchymal cells?
Hepatic cells responsible for: carbohydrate metabolism protein synthesis lipid metabolism storage excretion detoxification
What are precautions that should be taken when measuring ACTH?
It is unstable in blood due to proteolytic enzymes
It adsorbs onto glass
What are some DDI’s associated with theophylline?
Phenytoin
Phenobarbital
