What are common signs of coarctation of the aorta in an infant?

Coarctation of the aorta in infants typically presents with specific signs related to inadequate blood flow and resultant symptoms. One of the common signs observed is heavy sweating, particularly in the upper body. This is due to the body's attempt to compensate for lower blood flow to certain areas, leading to an increased demand for oxygen and nutrients which, in turn, raises metabolic activity and sweating.

In addition, infants might exhibit signs of distress such as difficulty breathing or fatigue, which can also accompany heavy sweating. The presence of dib, or difficulty in breathing (often interpreted as dyspnea), aligns with the physiological consequences of coarctation as the heart struggles to maintain adequate circulation against the obstruction.

While decreased appetite and vomiting, fever and abdominal pain, as well as low blood pressure and bradycardia may suggest various other medical conditions, they are not characteristic indicators of coarctation of the aorta in infants. The presence of heavy sweating and dib distinctly points to the cardiovascular strain caused by aortic coarctation, making it the most relevant choice in this scenario.