Final answer:
The nurse should verify whether the atypical right-side positioning is intentional for the echocardiogram or if an adjustment is needed to the standard left lateral decubitus position. This positioning helps in obtaining better-quality heart images.
Step-by-step explanation:
The action the nurse should take when observing the practical nurse placing a client on the right side with the right arm behind the head for a scheduled echocardiogram is to assess the positioning. The standard position for an echocardiogram is usually the left lateral decubitus position, which involves the patient lying on their left side with the left arm positioned comfortably. The right arm can be placed behind the head or alongside the body. The reasoning behind this specific positioning is to bring the heart closer to the chest wall, making it easier to obtain quality images.
While the positioning observed may not be standard, if the echocardiogram is being performed for a particular reason or if specific anatomical details are needed, the sonographer might request different positions. The nurse should verify with the sonographer or referring provider if the observed position is intentional for the specific procedure or if an adjustment is needed to ensure an effective and correct echocardiographic examination.