Final answer:
To elicit a specific reflex absent in a breech-presented newborn, a nurse should gently test the reflexes such as the plantar reflex as per neonatal neurological exam procedures and repeat if necessary, while making sure the infant is calm.
Step-by-step explanation:
When checking the reflexes of a newborn born vaginally in the breech presentation, there may be difficulty in eliciting certain reflex responses due to the position and delivery circumstances. In such cases, to attempt to elicit the reflex, a nurse could use gentle and appropriate techniques as explained in neonatal neurological exam guidelines. For instance, the plantar reflex can be tested by brushing a stimulus along the plantar surface of the infant's foot to check for the Babinski sign, which is indicative of proper lower motor neuron function. If a reflex does not appear at first, the nurse may repeat the test, ensuring the baby is calm and in a suitable position. It is important to remember that some reflexes might be less pronounced or absent in breech-delivered babies, and if there are concerns about an absent reflex, further medical evaluation may be necessary.