Which symptom is typically associated with aortic stenosis in infants?

Aortic stenosis in infants is characterized by a narrowing of the aortic valve, which obstructs blood flow from the heart to the body. This can lead to significant hemodynamic changes, most notably reduced cardiac output. Symptoms commonly associated with this condition include faint pulses and hypotension, which result from the heart’s decreased ability to pump blood effectively.

When the aortic valve is stenotic, the left ventricle has to work harder to push blood through the narrowed opening. If this obstruction is severe, it can lead to inadequate perfusion, particularly during increased demands such as feeding or crying. As a result, infants may present with weak or faint pulses and signs of poor perfusion such as hypotension.

Other options, while they may seem relevant, do not specifically align with the classic presentation of aortic stenosis in infants. Intolerance to sound is not typically a symptom of this condition; instead, it might be associated with sensory processing issues. Pallor and cyanosis can indicate other cardiac conditions such as congenital heart defects with more significant shunting or mixing of oxygenated and deoxygenated blood. Rapid weight gain is usually not a feature of aortic stenosis, as infants would typically have feeding issues and failure to thrive due