Lab Values Podcast by NURSING.com (Nursing Podcast, normal lab values for nurses for NCLEX®) by NURSING.com (NRSNG)

Brain Natriuretic Peptide (BNP) Lab Values

05.04.2022 - By Jon Haws RN: Critical Care Nurse & NCLEX EducatorPlay

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Overview

BNP

Normal Value Range

Pathophysiology

Special considerations

Lab value elevations

Nursing Points

General

Normal value range

100 pg/mL

Pathophysiology

Increased pressure overload due to increased SVR or volume

Ventricular stretching causes release of BNP into bloodstream

BNP released to aid in stress due to overload by:

Increases excretion of sodium in urine = natriuresis

Sodium follows water

Decreased intravascular volume

Decreased workload on the heart = improved cardiac function

Special considerations

Lavender tube (EDTA)

NT-proBNP may be requested instead

Submit in serum separator tube (tiger top)

Elevated lab values

>100 pg/mL – heart failure likely

The higher the value, the more likely the diagnosis of heart failure

Assessment

Assess patient for acute exacerbation of heart failure

Lung sounds

Oxygen status

Need for supplemental oxygen

Radiographic evaluation

May need diagnostics for evaluation

Echocardiogram can determine contractility function

Therapeutic Management

Treatment

Treat heart failure

Diurese

Improve contractility

Nursing Concepts

Lab Values

Perfusion

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