Tell me about the symptoms of right and left heart diseases...
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"heart failure"[MeSH Terms] AND "signs and symptoms"
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heart failure symptoms left sided right sided American Heart Association
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https://www.heart.org/en/health-topics/heart-failure/warning…
In heart failure, symptoms mainly reflect where blood backs up:
| Predominant left-sided heart failure | Predominant right-sided heart failure |
|---|---|
| Blood backs up into the lungs | Blood backs up into the systemic veins and organs |
| Breathlessness on exertion is often the earliest symptom | Leg and ankle swelling (peripheral edema) |
| Breathlessness when lying flat (orthopnea), needing extra pillows | Abdominal swelling from ascites or fluid retention |
| Waking suddenly at night gasping for air (paroxysmal nocturnal dyspnea) | Rapid weight gain from retained fluid |
| Persistent cough or wheeze, sometimes with white or pink frothy sputum in severe pulmonary edema | Abdominal fullness, reduced appetite, nausea |
| Tiredness, poor exercise capacity, weakness | Liver congestion/enlargement, sometimes right-upper-abdominal discomfort |
| Reduced oxygen delivery may cause cool extremities, dizziness, confusion, reduced urine output in severe cases | Distended neck veins and sometimes pleural effusions |
Why this happens
- Left-sided failure: the left ventricle cannot pump efficiently into the body, so pressure builds backward into pulmonary veins. This produces pulmonary congestion and fluid in the lungs, hence dyspnea, cough, orthopnea, and nighttime breathlessness. - Robbins & Kumar Basic Pathology, p. 309
- Right-sided failure: the right ventricle cannot pump effectively into the lungs, so blood accumulates in systemic and portal veins. This causes edema, ascites, liver and spleen enlargement, and neck-vein distension. Pure right-sided failure usually has fewer respiratory symptoms. - Robbins & Kumar Basic Pathology, p. 311
In practice, the two often coexist: left-sided failure can raise pressure in the pulmonary circulation and eventually strain the right ventricle. This is why many people develop both breathlessness and edema. The American Heart Association symptom guide also lists fatigue, swelling, nausea/loss of appetite, palpitations, and impaired thinking among possible heart-failure symptoms.
Seek emergency care now for severe or sudden breathlessness, chest pain, fainting, blue/gray lips, confusion, or coughing up pink frothy sputum. These can indicate acute pulmonary edema or another cardiac emergency.
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