Brain Natriuretic Peptide (BNP) Lab Values - podcast episode cover

Brain Natriuretic Peptide (BNP) Lab Values

Lab Values Podcast by NURSING.com (Nursing Podcast, normal lab values for nurses for NCLEX®) by NURSING.com (NRSNG)
May 24, 2023•3 min
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Episode description

Overview
  1. BNP
    1. Normal Value Range
    2. Pathophysiology
    3. Special considerations
    4. Lab value elevations
Nursing Points General
  1. Normal value range
    1. 100 pg/mL
  2. Pathophysiology
    1. Increased pressure overload due to increased SVR or volume
    2. Ventricular stretching causes release of BNP into bloodstream
    3. BNP released to aid in stress due to overload by:
      1. Increases excretion of sodium in urine = natriuresis
        1. Sodium follows water
      2. Decreased intravascular volume
      3. Decreased workload on the heart = improved cardiac function
  3. Special considerations
    1. Lavender tube (EDTA)
    2. NT-proBNP may be requested instead
      1. Submit in serum separator tube (tiger top)
  4. Elevated lab values
    1. >100 pg/mL – heart failure likely
    2. The higher the value, the more likely the diagnosis of heart failure
Assessment
  1. Assess patient for acute exacerbation of heart failure
    1. Lung sounds
    2. Oxygen status
      1. Need for supplemental oxygen
  2. Radiographic evaluation
  3. May need diagnostics for evaluation
    1. Echocardiogram can determine contractility function
Therapeutic Management
  1. Treatment
    1. Treat heart failure
      1. Diurese
      2. Improve contractility
Nursing Concepts
  1. Lab Values
  2. Perfusion
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