The client may have several diagnostic tests completed to assist with the diagnosis of heart failure. Which of the following diagnostic studies would rule out heart failure being present?
1. BNP 50 pg/mL
2. Hemoglobin 10g/dl
3. Sodium 148 mEq/L
4. Normal EKG
BNP 50pg/mL
Rationale: A BNP within normal limits will rule out heart failure. An elevated BNP is indicative of heart failure, but will often only be one indicator of heart failure. Hemoglobin of 10 gm/dl is low, and heart failure clients will often have anemia. Sodium level is slightly high. The EKG results are normal. However, the low hemoglobin, a sodium slightly high, and a normal EKG cannot rule heart failure in or out.
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