Final answer:
The presence of a harsh holosystolic murmur over the lower left sternal border and a loud P2 suggests a ventricular septal defect (VSD). If a VSD is classified as II/VI in a 2-month-old, close monitoring is recommended. The gold standard diagnostic test for confirming a VSD is an echocardiogram.
Step-by-step explanation:
The presence of a harsh holosystolic murmur over the lower left sternal border and a loud P2 suggests a congenital heart lesion, specifically a ventricular septal defect (VSD). This is a common type of congenital heart defect where there is an opening in the septum that separates the ventricles.
If a VSD is classified as II/VI in a 2-month-old, the next step would be to closely monitor the patient's condition and schedule regular follow-up appointments to assess any changes or symptoms that may require intervention.
The gold standard diagnostic test for confirming a VSD is an echocardiogram. This imaging test uses sound waves to create pictures of the heart, allowing healthcare professionals to visualize the structure and function of the heart, including the presence of any septal defects or abnormalities.