What is the primary pathophysiological difference between systolic and diastolic heart failure?
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Cover the mechanisms, clinical features, and management strategies for systolic and diastolic heart failure.
Mastering this deck enables you to distinguish between systolic and diastolic heart failure, understand their underlying mechanisms, and apply evidence-based treatment strategies—crucial skills for effective patient management and improving outcomes in clinical practice.
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| # | Front | Back | Hint |
|---|---|---|---|
| 1 | What is the primary pathophysiological difference between systolic and diastolic heart failure? | Systolic heart failure is characterized by impaired ventricular contractility leading to reduced ejection fraction, whereas diastolic heart failure involves impaired ventricular relaxation and filling, often with preserved ejection fraction. | Think 'ejection' for systolic; 'filling' for diastolic. |
| 2 | What is the hallmark feature of systolic heart failure on echocardiography? | Reduced left ventricular ejection fraction (LVEF), typically below 40%, indicating decreased systolic function. | Ejection fraction is the key measure. |
| 3 | Which clinical sign is more commonly associated with right-sided heart failure? | Peripheral edema, jugular venous distension, and hepatomegaly. | Think 'peripheral' for right-sided failure. |
| 4 | Name two common compensatory mechanisms in early heart failure. | Activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS). | Both increase cardiac output temporarily but can worsen heart failure long-term. |
| 5 | How does activation of the RAAS contribute to the progression of heart failure? | RAAS activation causes vasoconstriction and sodium retention, increasing preload and afterload, which can lead to ventricular remodeling and worsening heart failure. | Remember 'RAAS' as the 'bad actor' in worsening heart failure. |
| 6 | What is the role of BNP in heart failure? | B-type natriuretic peptide (BNP) is released in response to ventricular stretch and volume overload; elevated levels aid in diagnosis and assessing severity. | BNP levels reflect ventricular stress. |
| 7 | Which medications are first-line for symptom relief in chronic systolic heart failure? | ACE inhibitors or ARBs, beta-blockers, and diuretics for volume management. | Think 'ABCD' for ACE, Beta-blockers, Calcium channel blockers, Diuretics—although only ACE/ARBs and beta-blockers are first-line for systolic failure. |
| 8 | What is the primary benefit of beta-blockers in systolic heart failure? | They reduce myocardial oxygen consumption, inhibit deleterious sympathetic stimulation, and improve survival. | Beta-blockers are 'heart protectors' in HF. |
| 9 | Why are diuretics used in heart failure management? | To relieve symptoms of volume overload such as pulmonary congestion and edema, improving dyspnea and exercise tolerance. | Think 'diuretics' as symptom relievers. |
| 10 | Which device therapy can be beneficial in patients with reduced ejection fraction and ventricular arrhythmias? | Implantable cardioverter-defibrillator (ICD). | ICD prevents sudden cardiac death. |
| 11 | What distinguishes diastolic heart failure from systolic heart failure on echocardiography? | Preserved or normal ejection fraction with signs of impaired relaxation or compliance of the left ventricle. | Think 'preserved EF' for diastolic failure. |
| 12 | Name two echocardiographic features suggestive of diastolic dysfunction. | Reduced mitral annular e' velocity and increased E/e' ratio indicating impaired relaxation and elevated filling pressures. | E/e' ratio estimates filling pressures. |
| 13 | What are common comorbidities associated with diastolic heart failure? | Hypertension, obesity, diabetes mellitus, and atrial fibrillation. | Hypertensive heart disease is a major contributor. |
| 14 | Which medications are particularly beneficial in managing diastolic heart failure? | Control of blood pressure (ACE inhibitors, ARBs), rate control in atrial fibrillation, and diuretics for symptom relief. | Focus on managing comorbidities and volume status. |
| 15 | Why is fluid restriction sometimes recommended in heart failure patients? | To prevent volume overload and reduce symptoms like pulmonary congestion and edema. | Think 'fluid limits' for symptom control. |
| 16 | What is the significance of ventricular remodeling in heart failure? | Ventricular remodeling involves structural changes like dilation and hypertrophy, which worsen systolic function and disease progression. | Remodeling is the heart’s maladaptive response. |
| 17 | How does the use of aldosterone antagonists (e.g., spironolactone) benefit heart failure patients? | They reduce preload and afterload, prevent fibrosis, and improve survival in select patients with NYHA class II-IV heart failure. | Aldosterone antagonists combat fibrosis. |
| 18 | What lifestyle modifications are recommended for patients with chronic heart failure? | Sodium restriction, fluid management, regular exercise, smoking cessation, and weight management. | Lifestyle is key to symptom control. |
| 19 | Which pharmacologic class is contraindicated in acute decompensated heart failure with hypotension? | Vasodilators like nitrates may be used cautiously; however, certain inotropes or diuretics are preferred depending on clinical context. Always evaluate hemodynamics. | Vasodilators can worsen hypotension. |
| 20 | What is the main goal of treatment in advanced heart failure? | To improve quality of life, reduce hospitalizations, and manage symptoms, often with palliative approaches if prognosis is poor. | Focus shifts from cure to comfort. |
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