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24 terms

Electrolyte Balance/Lab Values & Meanings

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Hematocrit
(Hct)
-percentage of erythrocytes in a volume of blood Female: 36-46%
Male: 42-52%
Increased = dehydrated
Decrease = over hydrated, anemia, blood loss
***Should be 3 times the Hgb
Hemoglobin
(Hgb)
- blood test used to determine the concentration of oxygen-carrying components (hemoglobin) in red blood cells
Female: 12-15 g/dl
Male: 14-17 g/dl
Low values = Anemia, fluid retention, recent hemmorage
Increase-dehydration or polycythemia
**Should be 3 times the RBC
RBC Count
Female: 4 -5.5 million/mm3
Male: 4.5 - 6.2 million/mm3
Low values = Anemia: monitor for fatigue, dyspnea, tachycardia, tachypnea
High values: In COPD, may indicate Polycythemia, a compensation for pulmonary dysfunction that makes blood thicker, and increases risk of CVA, etc.
Total WBC Count
5,000 - 10,000 /mm3
> 10,000 indicates systemic infection (more than just local colonization)
Platelets,
Thrombocytes
200,000 - 500,000 /mm3
Creatinine
Female: 0.6 - 1.2 mg/dl
Male: 0.5 - 1.1 mg/dl
a blood test that measures the amount of creatinine in the blood.
-Decreased: Elderly values are lower because of reduced muscle mass, liver disease, not enough protein
-Increased: renal failure, acromegaly, giganti
Potassium (K)
3.5 - 5.0 mEq/l
Low (hypokalemia) vomiting, diarrhea, sweating, or use of loop diuretics,
Result of low K: ventricular arrhythmias

High (hyperkalemia) -renal or endocrine problem, anemia, mi, burn
Calcium (Ca)
8.2 -10.2 mg/dl
essential for proper functioning of the cardiovascular, neuromuscular, and endocrine systems, as well as blood clotting and bone and teeth formation.
Low (hypocalcemia): secondary to: abuse of laxatives, renal failure, low dietary calcium or Vit. D intake, excessive magnesium intake.
Result of low Ca: osteoporosis, muscle spasms / tetany, calcium deposits in tissue; cardiac arrhythmia, asystole
High (hypercalcemia): overuse of antacids containing calcium;
Result of high Ca:
thirst; polyuria; renal stones; decreased muscle tone and DTRs; tachycardia; cardiac arrhythmia, asystole
Sodium (Na)
136 -145 mEq/l
Low (hyponatremia) secondary to: fluid loss from diarrhea, vomiting, diaphoresis, diuretic use.
Result of low Na: postural hypotension, abdominal cramps, headache, fatigue, weakness

High (hypernatremia) secondary to: dehydration, high salt intake, poor renal function
Result of high Na: edema, tachycardia
Fasting Blood Glucose (FBG)
Tested after fasting: 70 - 110 mg/dL
CBC
Tests include: hemoglobin, hematocrit, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, mean corpuscular volume, platelet count, white Blood cell count
Chloride
100-108 mEq/L
--Detects acid-base balance and evaluates fluid status-helps maintain osmotic balance
Decreased: metabolic acidosis, vomiting
Increased: dehydration, complete renal shutdown, head injury
Magnesium
1.8 - 2.6 mEq/L
Increased: renal failure, hypothyroidism, severe dehydration, Addison's disease.
Decrease-alcoholism, malabsorption, diarrhea
Electrolytes
Test includes: calcium, chloride, magnesium, potassium, sodium
BUN
8-20 mg/dl
--Test kidney function & assess dehydation

Decreased: starvation, hepatic damage, overhydration.

Increased: renal failure, dehydration, urinary obstruction
Liver Panel
AST, ALT, ALP, Albumin, Total bilirubin, indirect and direct bilirubin
PH
7.35- 7.45
measure of how acidic or basic a solution is; the scale ranges from below 0 to above 14; solution with pH above 7 is basic and a pH below 7 is acidic
Ketones
positive test indicates that fats are being used by the body instead of carbohydrates, which occurs during starvation or an uncontrolled diabetic state
Casts
hardedned cell fragments, usually cylindrical, which are formed in the distal convoluted tubules and collecting ducts, and then flushed out of the urinary tract. these form when the filtrate flow is slow, the pH is low or the salt concentration is high....all conditions which cause protein to denature
CBC
infections/immune status
H & H
fluid status and anemai
Electrolyte
balance
Creatine
renal status
ABG
oxygenation status