Advanced Patient Assessment Practice Exam

The presence of dorsiflexion of the great toe with fanning of the remaining toes indicates which reflex?

1. Patellar reflex

2. Quadriceps reflex

3. Babinski sign

4. Jerk reflex

The correct answer is: Babinski sign

The presence of dorsiflexion of the great toe with fanning of the remaining toes is known as the Babinski sign. This reflex is typically evaluated in neurological assessments to gauge the integrity of the corticospinal tract, which is part of the central nervous system. In a healthy adult, the normal response to the plantar reflex test is toe flexion or curling when the sole of the foot is stroked. However, the Babinski sign, which shows dorsiflexion of the great toe while the other toes fan out, is considered a primitive reflex that indicates an abnormal response in adults, often signifying neurological damage or dysfunction in the brain or spinal cord. The Babinski sign is particularly relevant in assessing patients who may have neurological conditions, as its presence can denote issues with brain development or injury. This sign is normal in infants due to the immaturity of their nervous system, but if it remains present beyond a certain age, usually around 2 years, it may warrant further investigation into potential underlying neurological issues. Therefore, recognizing the Babinski sign is crucial in advanced patient assessment, as it provides essential information about the neurological status of the patient.