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NurseFaith
on FreezingBlue Flashcards.
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Factors to consider during lab analysis:
Fasting, Age, Source, Gender, Diet, Medications, Margin of Error, Variance in Norm Values
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3 Sources to draw blood for lab analysis:
- Venous --> "venipuncture", most common
- Arterial --> put sample on ice, apply pressure
- Capillary --> Glucose
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Margin of Error:
The more lab tests that are done, the more room/chances for an error to occur.... (phenomenon)
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When selecting a site to draw blood, stay away from:
Skin infections, mastectomy, lymph drainage
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Proper Collection Technique:
- Right Tube (color coated)
- Adequate filling of the tube
- Proper mixing of the additives with blood
- Transport --> ASAP
- Label tube: name, medical record number, date, time, test, initials of nurse
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Hemoconcentration is caused by:
prolonged tourniquet constriction or dehydration
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Hemodilution is caused by:
drawing blood from the same arm as IV infusion
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Hemolysis happens when:
Rough handling of the sample or drawing up blood through a small needle
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