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Blood Urea Nitrogen (BUN) Lab Values
Overview
- Blood Urea Nitrogen (BUN)
- Normal Value Range
- Pathophysiology
- Special Considerations
- Elevated Values
- Decreased Values
- Normal value range
- 7-20 mg/dL
- Pathophysiology
- Protein broken into amino acids -> Ammonia
- Ammonia converted to urea
- Urea excreted via kidneys
- Special considerations
- Green top tube
- Submitted in multiple panels
- Chem 7/Chem 10
- CMP
- Renal panel
- Elevated values
- Renal failure
- Congestive heart failure
- Myocardial infarction
- Dehydration
- Urinary obstruction
- Diabetes
- Decreased values
- Liver failure
- Overhydration
- Inadequate protein intake
- Malnutrition
- Pregnancy
- Assess patient’s nutritional status
- Assess urine output
- Find primary cause for renal impairment (pre-/intra-/post-renal)
- Treat cause of renal insufficiency
- Dialysis vs medication
- Lab Values
- Elimination
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By Jon Haws RN: Critical Care Nurse & NCLEX Educator
4.3
127127 ratings
Overview
- Blood Urea Nitrogen (BUN)
- Normal Value Range
- Pathophysiology
- Special Considerations
- Elevated Values
- Decreased Values
- Normal value range
- 7-20 mg/dL
- Pathophysiology
- Protein broken into amino acids -> Ammonia
- Ammonia converted to urea
- Urea excreted via kidneys
- Special considerations
- Green top tube
- Submitted in multiple panels
- Chem 7/Chem 10
- CMP
- Renal panel
- Elevated values
- Renal failure
- Congestive heart failure
- Myocardial infarction
- Dehydration
- Urinary obstruction
- Diabetes
- Decreased values
- Liver failure
- Overhydration
- Inadequate protein intake
- Malnutrition
- Pregnancy
- Assess patient’s nutritional status
- Assess urine output
- Find primary cause for renal impairment (pre-/intra-/post-renal)
- Treat cause of renal insufficiency
- Dialysis vs medication
- Lab Values
- Elimination
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