👤 By the CinnaRN Clinical Content Team🕐 Updated 2026-08-23🏷️ Physiological Adaptation🔖 Free to read, print, and share
Also known as: BMP · chem 7 · electrolytes · metabolic panel
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Use this quick-reference guide to spot, treat, and prevent Basic Metabolic Panel on the NCLEX. Keep it handy during review and on exam day!
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📒 The 1-minute cheat sheet
📌 Lytes
Na 135-145 mEq/L
K 3.5-5.0 mEq/L
Cl 98-106; CO2 22-26
📌 Renal
BUN 10-20 mg/dL
Creatinine 0.6-1.2 mg/dL
📌 Other
Glucose 70-110 fasting
Calcium 9.0-10.5 mg/dL
🚩 Report
K <2.5 or >6.5 → cardiac
Na <120 → seizures
📚 Basic Metabolic Panel — full study notes
The cheat sheet above is your quick recall card. These notes go deeper — what it is, what to do first, what must be reported, and what to teach.
A BMP reports sodium, potassium, chloride, CO2, BUN, creatinine, and glucose to assess fluid status, electrolytes, kidney function, and blood sugar. Potassium is the most dangerous electrolyte because abnormal levels cause life-threatening cardiac arrhythmias. The panel guides hydration, medication safety, and renal monitoring.
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Key points
Understand these first
Potassium has a narrow range; both high and low levels cause dangerous cardiac dysrhythmias.
Sodium reflects fluid balance, and rapid correction of sodium can cause neurologic harm.
Hyperkalemia produces peaked T waves, while hypokalemia produces flattened T waves and U waves.
Elevated BUN and creatinine indicate impaired kidney function or dehydration.
Calcium and magnesium, when included on the panel, also affect cardiac and neuromuscular function.
Glucose abnormalities on the BMP can signal diabetes, stress response, or critical hypoglycemia.
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Nursing priorities
What to do, in order
Place the patient on cardiac monitoring when potassium is critically high or low.
Verify the prescribed potassium replacement is given correctly and never as an IV push.
Assess hydration, intake and output, and weight when sodium or BUN is abnormal.
Hold potassium-raising drugs and notify the provider when hyperkalemia is present.
Recheck a suspiciously high potassium for hemolysis before acting on a non-emergent result.
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Red flags — report now
Escalate immediately
Potassium above 6.0 or below 2.5 mEq/L is a cardiac emergency requiring immediate action.
Never administer IV potassium by rapid push or bolus; it can cause fatal arrhythmia.
Follow prescribed dietary sodium and potassium limits, especially with kidney or heart conditions.
Report muscle weakness, cramping, palpitations, or confusion, which can signal electrolyte shifts.
❓ Basic Metabolic Panel: NCLEX FAQs
What are the priority nursing interventions for Basic Metabolic Panel?
Place the patient on cardiac monitoring when potassium is critically high or low. Verify the prescribed potassium replacement is given correctly and never as an IV push. Assess hydration, intake and output, and weight when sodium or BUN is abnormal. Hold potassium-raising drugs and notify the provider when hyperkalemia is present.
What are the warning signs of Basic Metabolic Panel a nurse must report?
Potassium above 6.0 or below 2.5 mEq/L is a cardiac emergency requiring immediate action. Never administer IV potassium by rapid push or bolus; it can cause fatal arrhythmia. Sodium below 120 mEq/L raises seizure risk and demands urgent reporting.
What do I need to know about Basic Metabolic Panel for the NCLEX?
Potassium has a narrow range; both high and low levels cause dangerous cardiac dysrhythmias. Sodium reflects fluid balance, and rapid correction of sodium can cause neurologic harm. Hyperkalemia produces peaked T waves, while hypokalemia produces flattened T waves and U waves. Elevated BUN and creatinine indicate impaired kidney function or dehydration.
What patient teaching is important for Basic Metabolic Panel?
Follow prescribed dietary sodium and potassium limits, especially with kidney or heart conditions. Report muscle weakness, cramping, palpitations, or confusion, which can signal electrolyte shifts.
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Quick Tip
Potassium has a narrow range; both high and low levels cause dangerous cardiac dysrhythmias.