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AHN 447 TEST 2- Questions & Answers
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AHN 447 TEST 2- Questions & Answers
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AHN 447 TEST 2- Questions & Answersmean corpuscular volume (MCV) Correct Ans-average volume or size of RBCs
mean corpuscular hemoglobin (MCH) Correct Ans-average amount of hemoglobin by weight
in a single RBC
reticulocyte count Correct Ans-determines bone marrow function
coomb's test Correct Ans-both direct and indirect are used for blood typing
prothrombin time (PT) Correct Ans-measures how long blood takes to clot, reflecting the
level of clotting factors II, VII, and X
international normalized ratio (INR) Correct Ans-individualized test that takes the patient's PT
and divides it by the standard PT
partial thromboplastin time (PTT) Correct Ans-looks at intrinsic clotting cascade and factors II,
V, VIII, IX, and XII
sickle cell trait Correct Ans-have one abnormal and one normal gene
usually have no symptoms or abnormal lab findings
sickle cell disease Correct Ans-adults with disease have inherited 2HbS gene alleles
resulting in 80-100% HbS
,care for sickle cell patient Correct Ans-1. oxygen
2. pain meds
3. hydration
check circulation q1h
remonve constrictive clotting
draw labs
transfusions
drugs for sickle cell crisis Correct Ans-48hr of IV analgesics (morphine, dilaudid)
hydroxyurea (droxia)-can reduce number of sickling and pain episodes and has serious side
effects
hypotonic solutions (D5W or D%NS)-push fluid into cells
iron deficiency anemia Correct Ans-decreased iron supply for RBCs
most common in women, older adults, and people w/ poor diets
low serum ferritin values
causes: blood loss, poor GI absorption of iron, poor diet
, vitamin B12 deficiency anemia (macrocytic) Correct Ans-lack of vit B12 causes improper DNA
synthesis of RBCs (beefy tongue)
poor intake of foods containing vit b12, small bowel resection, tapeworm, overgrowth of
intestinal bacteria.
pernicious anemia Correct Ans-results from failure to absorb vit b12
caused by a deficiency of intrinsic factor
aplastic anemia Correct Ans-deficiency of circulating RBCs due to bone marrow not
producing
usually occurs w/ leukopenia and thrombocytopenia
onset may be slow or rapid
50% cases cause unknown
aplastic anemia assessments and interventions Correct Ans-assess for hypoxia and
hypoxemia
assess for bone marrow failure
CBC
bone marrow biopsy
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