A nurse is caring for a client who is experiencing an exacerbation of heart failure.

Findings upon admission:

The nurse is assessing the client 24 hr later. How should the nurse interpret the findings related to the diagnosis of heart failure?

​​​​​​​Condition Choices

• Dysrhythmias: Dysrhythmias are often linked to electrolyte imbalances, particularly potassium abnormalities, rather than WBC count changes. The client’s potassium level remains within normal limits, making dysrhythmias unlikely.
• Infection: A decreasing WBC count below the normal range weakens the immune response, increasing susceptibility to infections. The client’s WBC count has declined from 4,500/mm³ to 4,100/mm³, placing them at higher risk for opportunistic infections, a major concern in HIV.
• Renal failure: Renal failure is typically assessed through elevated BUN and creatinine levels, along with signs of fluid imbalance. The client’s BUN is slightly elevated but not significantly high, and there are no other indicators of renal failure.
• Bleeding: Bleeding risk is associated with low platelet levels, which impair clotting ability. The client’s platelet count remains within normal limits, reducing the likelihood of bleeding complications.
• Seizures: Seizures can result from severe electrolyte imbalances, neurological conditions, or uncontrolled infections. The client does not exhibit signs of neurological dysfunction, and electrolyte levels are stable, making seizures unlikely.

Finding Choices

• WBC count: A declining WBC count below the normal range weakens the immune response, making the client more susceptible to infections. This is particularly concerning for individuals with HIV, as they are already at an increased risk for opportunistic infections.
• Potassium level: Potassium levels are crucial for cardiac function and neuromuscular stability. The client’s potassium level remains within normal limits, making it an unlikely contributor to any immediate risk.
• Platelets: Platelets play a key role in clot formation. The client’s platelet count is within the normal range, so they are not currently at increased risk for bleeding.
• Sodium level: Sodium is essential for fluid balance and neurological function. The client’s sodium level remains within the normal range, meaning it is not contributing to any immediate concerns.
• BUN level: Elevated BUN levels can indicate impaired kidney function, dehydration, or increased protein metabolism. The client’s BUN level has increased slightly but is still within the normal range, making renal failure unlikely at this time.

A. Asystole: Synchronized cardioversion is ineffective for asystole because there is no electrical activity to reset. The appropriate intervention for asystole is immediate CPR and administration of epinephrine.

B. Ventricular fibrillation: Defibrillation, not synchronized cardioversion, is the appropriate treatment for ventricular fibrillation because it is a pulseless, chaotic rhythm that requires immediate high-energy shocks.

C. Pulseless ventricular tachycardia: Pulseless ventricular tachycardia is treated with defibrillation rather than synchronized cardioversion, as there is no coordinated cardiac activity to synchronize with. CPR and advanced cardiac life support (ACLS) protocols should be initiated.

D. Atrial fibrillation: Synchronized cardioversion is indicated for atrial fibrillation, particularly when it is associated with hemodynamic instability. Cardioversion helps restore a normal sinus rhythm by delivering a shock synchronized to the R wave of the QRS complex.