Neisseria meningitidis plated on blood agar

Question.

10 month old has been brought by his mother, as he is not gaining weight and height at 30 th percentile. He was born at 29th week of pregnancy. This mother says that he is easily tired. There is a “to and fro ” murmur at sternum, with left ventricular thrill. What is the most likely pathology?

        1. Venous Hum
        2. Ventricular Septal Defect(VSD)
        3. Tetralogy of Fallot(ToF)
        4. Patent Ductus Arteriosus(PDA)
        5. Aortic Stenosis

    Answer.

    4. Patent Ductus Arteriosus(PDA)

     
    Explanation.