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Creatinine (Cr) Lab Values
Overview
- Creatinine
- Normal Value Range
- Pathophysiology
- Special considerations
- Elevations in creatinine
- Decreases in creatinine
- Normal values
- 0.7 – 1.4 mg/dL
- Pathophysiology
- Muscle breakdown and use
- Creatine -> creatinine
- Released into bloodstream
- Filtered through kidneys
- Excreted in urine
- Creatinine more specific to kidney function
- Muscle breakdown and use
- Special considerations
- Green top
- Submitted with renal panels or chems
- Creatinine clearance
- Tests creatinine in urine
- Compare to serum creatinine
- 24 hour urine
- Toss first urine sample, then start
- On ice
- Increased creatinine values
- Renal disease
- Rhabdomyolysis
- Muscle breakdown
- Trauma
- Extreme workouts
- Congestive heart failure
- Dehydration
- Shock
- Decreased creatinine values
- Loss of muscle mass
- Muscular dystrophy
- Decreased protein intake
- Pregnancy
- Liver disease
- Assess patient’s nutritional status
- Assess urine output
- Consider other causes for increase in creatinine
- Muscle
- 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
- Creatinine
- Normal Value Range
- Pathophysiology
- Special considerations
- Elevations in creatinine
- Decreases in creatinine
- Normal values
- 0.7 – 1.4 mg/dL
- Pathophysiology
- Muscle breakdown and use
- Creatine -> creatinine
- Released into bloodstream
- Filtered through kidneys
- Excreted in urine
- Creatinine more specific to kidney function
- Muscle breakdown and use
- Special considerations
- Green top
- Submitted with renal panels or chems
- Creatinine clearance
- Tests creatinine in urine
- Compare to serum creatinine
- 24 hour urine
- Toss first urine sample, then start
- On ice
- Increased creatinine values
- Renal disease
- Rhabdomyolysis
- Muscle breakdown
- Trauma
- Extreme workouts
- Congestive heart failure
- Dehydration
- Shock
- Decreased creatinine values
- Loss of muscle mass
- Muscular dystrophy
- Decreased protein intake
- Pregnancy
- Liver disease
- Assess patient’s nutritional status
- Assess urine output
- Consider other causes for increase in creatinine
- Muscle
- Treat cause of renal insufficiency
- Dialysis vs medication
- Lab Values
- Elimination
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