Final answer:
To listen to the heart of a neonate in the LSA position, you should place the stethoscope in the Lower Left Quadrant of the chest, where the apex of the heart is nearest to the chest wall, making the correct answer C. Lower Left Quadrant.
Step-by-step explanation:
To determine where to listen to the heart of a neonate in the Left Sacrum Anterior (LSA) position, it is essential to understand the anatomy of a neonate's heart. The heart is located within the thoracic cavity, medially between the lungs in the mediastinum, and the apex of the heart lies just to the left of the sternum between the junction of the fourth and fifth ribs near their articulation with the costal cartilages. In the LSA position, which refers to the baby being positioned with its left sacrum anteriorly, the anterior chest of the neonate is now rotated towards the left side of its body.
Therefore, the best place to listen to the heart would be where the apex beats closest to the chest wall. Considering the anatomical position of the heart's apex, you would place the stethoscope in the Lower Left Quadrant (LLQ) of the infant's chest to best hear the heart sounds in the LSA position. So the correct answer is C. Lower Left Quadrant.