Methods Critical Care Exam
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ABG - PH - 🧠ANSWER ✔✔7.35-7.45 mm HG
ABG - PaCO2 range - 🧠ANSWER ✔✔35-45 mm HG
ABG - PA02 - 🧠ANSWER ✔✔80-100mm HG
ABG - BE - 🧠ANSWER ✔✔-2 - 3 MeQ/L
,CBC: Hemoglobin (Hgb) - what is the normal range? - 🧠ANSWER
✔✔Normal Value: 14-17.5 G /DL
CBC: Hemoglobin (Hgb) - what do high and low values indicate? -
🧠ANSWER ✔✔High value = smoking?
Low value = anemia or blood loss?
CBC: Hematocrit - what is the normal range? - 🧠ANSWER ✔✔Normal
value = 41-50%
CBC: Hematocrit - what do high and low values indicate? - 🧠ANSWER
✔✔High value = dehydrated?
Low value = anemia or blood loss?
CBC: WBC - what is the normal range? - 🧠ANSWER ✔✔Normal value =
4500-11000
CBC: WBC - what do high and low values indicate? - 🧠ANSWER ✔✔High
value = infection, anemia, steroid use
Low value = viral infection or immunodeficiency
CBC: RBC - what is the normal range? - 🧠ANSWER ✔✔Normal value =
3.9-5.5 million mm3
, CBC: RBC - what do high and low values indicate? - 🧠ANSWER ✔✔High
value = polycythemia or high altitude
Low value = cancer or bone marrow suppression
Coags: PT - what does it measure & how long? - 🧠ANSWER ✔✔Coumadin
anticoagulation
10-13 second
Coags: PT - what do high values indicate? - 🧠ANSWER ✔✔High values
can indicate liver cirrohsis, vitamin K deficiency or DIC
Coags: INR - 🧠ANSWER ✔✔International normalized ratio. Normal INR =
1.0.
Coags: aPTT - what does it measure & how long? - 🧠ANSWER
✔✔Measures Heparin
25-40 second
OB: What are some physiological changes which occur in pregnancy? -
🧠ANSWER ✔✔-Blood volume increases 40%
-Plasma increases, showing false anemia on labs
-BP decreases in 2nd trimester, but returns to normal
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