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Ahmed7
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#AK_Step1_v12::#NinjaNerd::06_Cardiovascular::03_Pathology::07_Cardiomyopathies
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What is the likely cause of syncope in a young patient with occasional chest pain, dyspnea, and a crescendo-decrescendo systolic murmur along the left sternal border without carotid radiation?
{{c1::Hypertrophic obstructive cardiomyopathy (HOCM)}}
Extra
Syncope in HOCM is multifactorial and can be due to:
- Outflow obstruction (interventricular septal hypertrophy)
- Arrhythmia
- Ischemia
- Ventricular baroreceptor response that inappropriately causes vasodilation
- Compare with aortic stenosis heard at right second intercostal radiating to carotids


- Outflow obstruction (interventricular septal hypertrophy)
- Arrhythmia
- Ischemia
- Ventricular baroreceptor response that inappropriately causes vasodilation
- Compare with aortic stenosis heard at right second intercostal radiating to carotids


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First Aid
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