AMI vs Aortic Dissection

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Chest Pain: AMI or Aortic Dissection?

Chest Pain
- Importance of differentiating chest pain causes
- Focus on myocardial infarction and aortic dissection
- Overview of history, clinical features, and physical examination

History - Myocardial Infarction
- **Onset**: Gradual, often with exertion or stress
- **Pain Quality**: Pressure, squeezing, or fullness
- **Radiation**: May radiate to left arm, jaw, or back
- **Associated Symptoms**: Diaphoresis, nausea, shortness of breath

History - Aortic Dissection
- **Onset**: Sudden and severe
- **Pain Quality**: Tearing or ripping sensation
- **Location**: Anterior chest for ascending aorta; back for descending aorta
- **Associated Symptoms**: Neurological deficits may occur

Clinical Features - Myocardial Infarction
- Common in patients with cardiovascular risk factors
- Possible ST-segment changes on ECG indicating ischemia
- Can present with heart failure symptoms

Clinical Features - Aortic Dissection
- Associated with hypertension and connective tissue disorders (e.g., Marfan syndrome)
- May cause neurological symptoms due to compromised blood flow

Physical Exam - Myocardial Infarction
- Vital signs may show tachycardia and hypertension
- Possible hypotension in severe cases
- Abnormal heart sounds or murmurs on auscultation

Physical Exam - Aortic Dissection
- Blood pressure discrepancies (greater than 20 mm Hg) between arms
- Possible pulse deficits in extremities
- Signs of heart failure may be present

Conclusion
- Importance of accurate differentiation between MI and AD
- Timely imaging and clinical judgment are critical
- Prompt management can save lives
Category
Cardiology
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