A client is comatose 24 hours after cardiac arrest. Which physical finding best predicts a poor outcome?

A client is comatose 24 hours after cardiac arrest. Which physical finding best predicts a poor outcome?

• A. Lack of corneal or pupillary reflex
• B. Presence of corneal reflex
• C. Normal pupillary response to light
• D. Ability to move limbs

Answer: (A)

The main idea here is that brainstem reflexes are strong indicators of prognosis after a cardiac arrest. The corneal reflex and the pupillary light reflex depend on intact brainstem pathways. If these reflexes are absent in a comatose patient 24 hours after resuscitation, it suggests extensive brainstem injury and a very low likelihood of meaningful recovery. In contrast, a present corneal reflex or a normal pupillary response implies some preserved brainstem function, which is more compatible with potential recovery. The ability to move limbs can occur even with severe brain injury and does not reliably predict good outcome, since motor activity may be preserved through spinal pathways or reflexes. So, the absence of corneal or pupillary reflexes best signals a poor prognosis.

The main idea here is that brainstem reflexes are strong indicators of prognosis after a cardiac arrest. The corneal reflex and the pupillary light reflex depend on intact brainstem pathways. If these reflexes are absent in a comatose patient 24 hours after resuscitation, it suggests extensive brainstem injury and a very low likelihood of meaningful recovery. In contrast, a present corneal reflex or a normal pupillary response implies some preserved brainstem function, which is more compatible with potential recovery. The ability to move limbs can occur even with severe brain injury and does not reliably predict good outcome, since motor activity may be preserved through spinal pathways or reflexes. So, the absence of corneal or pupillary reflexes best signals a poor prognosis.