Question

"Patient: 48-year-old woman

Chief complaint: I can't really see well out of my right eye. My eyelids have been dropping since I woke up this morning.
Background/Patient history: Patient got Botox (botulism toxin) injections in her forehead one day prior.

The goal of the original treatment was to block signals from which nerve
a. CN IX
b. CN V
c. CN VII"

Answer 1

The Botox injections affected the nerve responsible for raising the eyelids, known as CN VII. The purpose of the treatment was to block signals from CN VII, which controls the muscles of facial expression, including the ones responsible for lifting the eyelids.

Step-by-step explanation:

Based on the symptoms described by the patient, it is likely that the Botox injections caused a temporary paralysis of the muscles responsible for raising the eyelids. The injections target the nerve signal transmission, which would be associated with CN VII, the facial nerve. This nerve controls the muscles of facial expression, including the ones responsible for lifting the eyelids. Therefore, the goal of the original treatment was to block signals from CN VII.