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Lab values
BUN (Blood Urea Nitrogen) Lab Values
10-20 mg/dL
40 secs
Creatinine Lab Values
Measures Renal Function
0.6 - 1.3 mg/dL
1 min
Red Blood Cell Count (RBC) Lab Values
Women: 3.5-5.5 million cells/ MuL
Men: 4.3-5.9 million cells/ MuL
1 min
Hemoglobin (Hgb) Lab Values
Men: 13 - 17 g/dL
Women: 12 - 16 g/dL
47 secs
Hematocrit (Hct) Lab Values
Women: 36% - 46%
Men: 41% - 53%
1 min
Chloride (Cl-) Lab Value
95-105 mEq/L
28 secs
Normal Electrolyte Lab Values
Potassium (K+)
3.5 to 5.0 mEq/L
Calcium (Ca2+)
8.5 to 10.5 mg/dL
Phosphate (PO43–)
2.5 to 4.5 mg/dL
Magnesium (Mg2+)
1.5 to 2.5 mEq/L
Sodium (Na+)
135 to 145 mEq/L
Chloride (Cl–)
95 to 105 mEq/L
2 mins
Magnesium (Mg2+) Lab Value
1.5 to 2.5 mEq/L
28 secs
Phosphate (PO43-) Lab Value
2.5 to 4.5 mg/dL
29 secs
Potassium (K+) Lab Value
3.5 to 5.0 mEq/L
20 secs
Calcium (Ca2+) Lab Value
8.5 to 10.5 mg/dL
26 secs
Hypokalemia
Assessment
< 3.5 mEq/L
Muscle Weakness
Arrhythmia
U Wave
Ileus
Hyporeflexia
Interventions
IV K+ Infusion at 5-10 mEq/hr
Give Orally with Food
Nursing Considerations
Monitor Respiratory Status
3 mins
Hyperkalemia
Assessment
> 5.0 mEq/L K+
Abdominal Cramps
Muscle Weakness
Diarrhea
Arrhythmia
Tall, Peaked T Waves
Interventions
IV Calcium
Infusion of Glucose and Insulin
Loop or Thiazide Diuretics
Kayexalate
Dialysis
Prevention Education
2 mins
Hypocalcemia Causes
Hypoalbuminemia
Hypomagnesemia (Less Common Hypermagnesemia)
Hypovitaminosis D
Hypoparathyroidism
Medications
Hyperphosphatemia
Malnutrition
Acute Pancreatitis
Alkalosis
Sepsis
Chronic Kidney Disease
2 mins
Hypocalcemia
Muscle Spasms
Assessment
< 8.5 mg/dL Ca2+
Decreased Bone Density
Tetany
Chvostek's Sign
Trousseau's Sign
Increased DTR
ECG Changes
QT Prolongation
Considerations
Oral and IV Replacement of Ca2+
Seizure Precautions
2 mins
Hypocalcemia Treatments
Characteristics
Treat Underlying Disorder
Acute Treatments
IV Calcium Gluconate
Cardioprotective
Chronic Treatments
Calcium Carbonate
Calcium Citrate
Vitamin D Supplements
Considerations
Treat Hypomagnesemia
2 mins
Hypercalcemia Causes
Two CHIMPANZEES Acronym
Thyroid Disorders
Calcium Supplements
Hyperparathyroidism
Iatrogenic (Drugs, immobility)
Milk-Alkali Syndrome
Paget's Disease of Bone
Acromegaly or Addison's Disease
Neoplasms
Zollinger-Ellison Syndrome
Excessive Vitamin A
Excessive Vitamin D
Sarcoidosis
2 mins
Hypercalcemia
Assessment
> 10.5 mg/dL Ca2+
Pathologic Fractures
Lethargy
Hypercoagulation
Constipation
ECG Changes
QT Shortening
Interventions
No Calcium Intake
Chelating Drugs
Calcitonin
Bisphosphonates
Loop Diuretics instead of Thiazide Diuretics
Considerations
Increased Risk for Renal Calculi
Increase Fluids
3 mins
Hyponatremia
Assessment
< 135 mEq Na+
Nausea and Vomiting
Decreased LOC
Confusion / Lethargy
Seizures
Priority Interventions
Assess Airway
Reduce Diuretic Dosage
Fluid Excess Hyponatremia
Mannitol (Osmitrol)
Fluid Restriction
Fluid Deficit Hyponatremia
Hypertonic Solution (3% or 5% NaCl)
2 mins
Hypernatremia
Assessment
> 145 mEq/L Na+
Change in LOC
Extreme Thirst
Orthostatic Hypotension
Dry Flushed Skin
Muscle Twitching
Seizures
Priority Interventions
Treat and Prevent Dehydration
Hypotonic Solutions (0.225% or 0.45% NaCl)
Sodium Restriction
Diuretics
2 mins
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