CardiologyInternal Medicine

heart failure

Q: What is the ejection fraction (EF) threshold that defines HFrEF (Heart Failure with Reduced Ejection Fraction)?

According to the summary, HFrEF is defined as an ejection fraction of less than 40%. This represents systolic dysfunction where the left ventricle cannot pump effectively.

Q: Which of the following is a major criterion in the Framingham Criteria for diagnosing heart failure?

Paroxysmal nocturnal dyspnea (PND) is listed as a major criterion in the Framingham Criteria. Peripheral edema, night cough, and dyspnea on exertion are all minor criteria.

Q: What is the sensitivity of the Framingham criteria for diagnosing heart failure?

The Framingham criteria have a sensitivity of 100% and specificity of 78% for diagnosing heart failure, as stated in the summary.

Q: Which NYHA Functional Class describes a patient with marked limitation of physical activity?

NYHA Class III is characterized by marked limitation of physical activity. Class I has no limitation, Class II has slight limitation, and Class IV patients are unable to carry out any physical activity without discomfort.

Q: What is the most common cause of right heart failure?

According to the summary, left heart failure is the most common cause of right heart failure. Other causes include pulmonary hypertension, RV infarct, tricuspid/pulmonary valve disease, and chronic lung disease.

Heart failure is a complex clinical syndrome resulting from structural or functional impairment of ventricular filling or ejection of blood, most commonly caused by ischemic heart disease, hypertension, or valvular disease. The condition is classified by ejection fraction into HFrEF, HFmrEF, and HFpEF, with treatment strategies differing significantly based on this classification, as guideline-directed medical therapy with the four pillars of ACEI/ARB/ARNI, beta-blockers, MRAs, and SGLT2 inhibitors has been shown to reduce mortality specifically in HFrEF. Understanding the pathophysiology of left versus right heart failure, recognizing the Framingham diagnostic criteria, and mastering the stepwise approach to pharmacologic and device-based management are essential competencies for medical students, as heart failure remains one of the leading causes of hospitalization and mortality worldwide.

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1. What is the ejection fraction (EF) threshold that defines HFrEF (Heart Failure with Reduced Ejection Fraction)?

2. Which of the following is a major criterion in the Framingham Criteria for diagnosing heart failure?

3. What is the sensitivity of the Framingham criteria for diagnosing heart failure?

4. Which NYHA Functional Class describes a patient with marked limitation of physical activity?

5. What is the most common cause of right heart failure?

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heart failure

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