A patient has intravenous fluids infusing in the right arm. When taking a blood pressure on this patient, what would the nurse do in this situation?

The Joint National Committee (JNC 7) report provides evidence-based guidelines for the classification and management of blood pressure (BP) to reduce the risk of cardiovascular disease.

Rationale for correct answer:

C. Stage 1 Hypertension: Stage 1 hypertension is defined as: Systolic 140–159 mmHg or Diastolic 90–99 mmHg.

Rationale for incorrect answers:

A. Normal: According to JNC 7, normal BP is defined as less than 120/80 mmHg.

B. Prehypertension is defined as: Systolic 120–139 mmHg or Diastolic 80–89 mmHg.

D. Stage 2 Hypertension is defined as: Systolic ≥160 mmHg or Diastolic ≥100 mmHg.

Take-home points:

• According to JNC 7, Stage 1 Hypertension is defined as a systolic BP of 140–159 mmHg or diastolic of 90–99 mmHg.
• When systolic and diastolic values fall into different categories, the higher stage should determine the classification.

Site selection for BP measurement must be individualized and based on current clinical interventions, limb condition, and nursing judgment to ensure both safety and accuracy.

Rationale for correct answer:

B. Take the blood pressure in the left arm: The opposite limb (in this case, the left arm) should be used when an IV is infusing in the right arm. This ensures accurate BP measurement and protects the integrity of the IV site.

Rationale for incorrect answers:

A. Take the blood pressure in the right arm: Taking BP on the same arm as an active IV infusion may lead to: Occlusion or backflow in the IV-line, inaccurate readings due to fluid dynamics or risk of infiltration or discomfort.

C. Use the smallest possible cuff: Using a cuff that is too small can produce falsely high BP readings. The cuff size should be based on the client’s arm circumference, not the IV presence.

D. Report inability to take the blood pressure: There is no need to omit the BP assessment, as an alternative arm is available. Only if both arms are contraindicated (e.g., bilateral mastectomy, IVs, injuries) would the nurse need to report the inability and consider alternatives (e.g., leg BP).

Take-home points:

• Never take blood pressure in an arm with an active IV infusion unless absolutely necessary and no other options are available.
• Always assess for site limitations before taking BP and use the opposite limb when contraindications are present.