Which patient is at MOST risk for heart failure exacerbation?

Which patient is at MOST risk for heart failure exacerbation?

• A. A 55-year-old female who limits sodium and fluid intake regularly.
• B. A 73-year-old male not taking Amiodarone for one month and has atrial fibrillation.
• C. A 67-year-old female being discharged home after heart valve replacement surgery.
• D. A 78-year-old male with eczema and cystic fibrosis.

Answer: (B)

Uncontrolled atrial fibrillation with a rapid heart rate can precipitate acute heart failure decompensation. When rhythm control is poor and the rate is high, the ventricles fill more quickly but with less time for proper diastolic filling, reducing stroke volume and cardiac output. The loss of the atrial kick in AF also reduces LV preload, and persistent tachycardia can lead to tachycardia-induced cardiomyopathy, edema, and congestion. In this scenario, the patient is not taking amiodarone for a month, leaving AF unmanaged and the heart exposed to rapid, irregular rates ready to trigger decompensation, which makes this the highest risk among the options. Limiting sodium and fluids helps protect against fluid overload, the post-op patient may be monitored and stabilized after surgery, and CF with eczema is not a typical HF risk factor.

Uncontrolled atrial fibrillation with a rapid heart rate can precipitate acute heart failure decompensation. When rhythm control is poor and the rate is high, the ventricles fill more quickly but with less time for proper diastolic filling, reducing stroke volume and cardiac output. The loss of the atrial kick in AF also reduces LV preload, and persistent tachycardia can lead to tachycardia-induced cardiomyopathy, edema, and congestion. In this scenario, the patient is not taking amiodarone for a month, leaving AF unmanaged and the heart exposed to rapid, irregular rates ready to trigger decompensation, which makes this the highest risk among the options. Limiting sodium and fluids helps protect against fluid overload, the post-op patient may be monitored and stabilized after surgery, and CF with eczema is not a typical HF risk factor.