Differential Diagnosis for Systolic Murmur Radiating to Right Clavicle
- Single Most Likely Diagnosis
- Aortic stenosis: This condition is characterized by the narrowing of the aortic valve opening, which can cause a systolic murmur that radiates to the right clavicle due to the direction of turbulent blood flow. The murmur is typically harsh and crescendo-decrescendo in nature.
- Other Likely Diagnoses
- Pulmonary stenosis: Although less common, pulmonary stenosis can also produce a systolic murmur that radiates to the back or the right clavicle, depending on the severity and location of the obstruction.
- Hypertrophic cardiomyopathy: This condition can cause a systolic murmur due to dynamic left ventricular outflow tract obstruction, which may radiate to the clavicles.
- Do Not Miss Diagnoses
- Aortic dissection: Although less likely, aortic dissection can present with a new systolic murmur due to aortic regurgitation and should be considered in the differential diagnosis, especially in patients with risk factors such as hypertension or aortic aneurysm.
- Endocarditis: Infective endocarditis can cause new murmurs, including systolic murmurs, due to valve destruction or vegetation formation, and is a critical diagnosis not to miss due to its high morbidity and mortality.
- Rare Diagnoses
- Supravalvular aortic stenosis: A rare congenital condition characterized by narrowing of the aorta above the aortic valve, which can cause a systolic murmur radiating to the right clavicle.
- Sinus of Valsalva aneurysm: A rare condition where an aneurysm of the sinus of Valsalva can cause a systolic murmur due to aortic regurgitation or obstruction, which may radiate to the clavicles.