Lab Values Flashcards

1
Q

WBC

A

White blood cell count
Indicates fx status of immune system
5,000-10,000 uL

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2
Q

Leukocytosis

A

High WBC

Due to acute/chronic infection or malignancy

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3
Q

Leukopenia

A

Low WBC

Disease of immune system or radiation/chemo

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4
Q

WBC implication for tx

A

> 11,000 may have decreased tolerance to activity

<5,000 w/ fever - consider postponing due to risk of infection

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5
Q

Hct

A

Hemotcrit - vol of RBC in whole blood
Eval Armenia and abnormal state of hydration

Male 42-52%
Female 37-47%

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6
Q

Increased Hct

A

Tobacco use, severe Lung disease

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7
Q

Decreased Hct

A

Anemia or hemodilution

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8
Q

Hct implications for tax

A

Low: weakness, fatigue, DOE, tachycardia
25-30% consider modifying tx
<25% consider postponing tx
Frequent vital monitoring and rest period recommended

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9
Q

Hb

A

Hemoglobin- reflects O2 carrying component of RBC - indicates severity of anemia
Male: 14-18 g/dL
Female: 12-16 g/dL

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10
Q

Hb levels

A

Increased: smokers and lung disease
Decreased: anemia

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11
Q

Hb implications for tax

A

8-10 g/dL —> modify due to reduced exercise capacity

<8 g/dL—>consider postponing tax

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12
Q

Plts

A

Platelets - clotting process, bleeding stopped and would healing begins

150,000-400,000

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13
Q

Thrombocytosis

A

High Plt count

Iron deficiency, neoplasm, inflammation, infection

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14
Q

Thrombocytopenia

A

Low Plt count

Liver disease, platelet disorders, viral infection

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15
Q

Plts implication for tx

A

-low levels, bleeding can occur form mucosal surfaces w/ inor truama
-20,000-50,000 light AROM if asymptomatic; gait training as tolerated, no resistive
<20,000 NO TX!!

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16
Q

Na

A

Sodium - electrolyte important in nerve conduction, muscle contraction, cell fx

Changes cause cells to shrink or swell

136-145 mEq/L

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17
Q

Hypernatremia

A

Increased NA

> 160 mEq/L

18
Q

Hyponatremia

A

Decreased Na

<120 mEq/L

19
Q

Na levels affected by

A

Diuretics, diarrhea, CHF

20
Q

Na implications for tx

A

Be aware of potential symtpoms when Na is LOW:

Weakness, confusion, stupor, hypotension, seizures, edema, weight gain

21
Q

K

A

Potassium - electrolyte important for muscle and nerve conduction

3.5-5.0 mEq/L

22
Q

Hyperkalemia

A

Increased K - due to kidney disease or certain meds

Can produce EEG changes, nausea, diarrhea

23
Q

Hypokalemia

A

Decreased K - caused by diarrhea, vomiting, dehydration

Can lead to dangerous ventricular arrhythmia, cardiac irritability, dizziness, hypotension

24
Q

K implications for tx

A

Minor changes can have sig consequence for cardiac fx.

Pts w/ abnormal K should be seen for tx after the levels have been corrected

25
BUN
Blood urea nitrogen - waist product for protein metabolism, directly related to metabolic fx of liver and excretory fx of kidneys 10-20 mg/dL
26
BUN levels
Increased: renal and liver disease pt may need dialysis, kidneys not fx properly Decreased: inadequate protein intake, malabsorption, liver damage
27
BUN implications for tx
No specific activity guidelines but pt w/ renal dysfunction may experience fatigue, muscle weakness, decreased mental status as BUN levels rise
28
Creatinine
By product of normal muscle metabolism, regulated and excreted by kidney .6-1.2 mg/dL
29
Creatinine levels
High: reflect worsening kidney fx Low: inadequate protein intake, liver disease, kidney damage
30
Creatinine implications for tx
No specific activity guidelines but patients with renal dysfunction may experience fatigue, muscle weakness, and decreased mental status as creatinine levels rise
31
Blood glucose
Measure of sugar content in blood - detect hyper, hypo, and diabetes Fasting: 70-110 mg/dL
32
Hypoglycemia
Low blood glucose Can lead to low activity tolerance Sweating, hunger, trembling, anxiety, blurred vision, confusion <60 mg/dL = hold tx until it has been corrected
33
Hyperglycemia
High blood glucose - can lead to diabetic ketoacidosis Increased thirst, fatigue, blurred vision, <300-350 mg/dL = hold tx
34
A1C test
Blood test provides info about average blood close level over past 3mo <5.7% =normal 5.7-6.4% = prediabetes >6.5% = diabetes
35
Coagulation profiles
Determine ability to initiation clotting sequence - dx clotting disorders, monitor anticoagulant therapy
36
“Therapeutic level” for coagulation
Level when the blood has been sufficiently antigoagulated given pt’s medical condition
37
PT or Pro Time
Prothrombin time - test to screen for bleeding disorders, measures the clotting time Monitors effectiveness of oral anticoagulant therapy 11-12.5 seconds
38
Pro Time implications for tx
Patients receiving anticoagulant therapy may have levels that are 2 - 3 times the laboratory control values With abnormally high levels, treatment may be held due to increased risk of bleeding
39
PTT
Partial thromboplastin Time - measures clotting time in plasma - disorders of both excessive clotting and excessive bleeding Monitors effectiveness of heparin anticoagulant therapy 30-40 seconds
40
PTT implications for tx
Patients receiving anticoagulant therapy mayhave levels that are 1.5 – 2.5 times the laboratory control values With abnormally high levels, treatment may be held due to increased risk of bleeding
41
Chart
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