Which of the following cannot be assessed in a comatose patient?

• A. Pupillary response
• B. Tidal volume
• C. Objective information
• D. Symptoms

Answer: (D)

In a comatose patient, the assessment of symptoms is inherently challenging because symptoms are typically subjective experiences reported by the patient regarding their condition or discomfort. Since a comatose patient is unresponsive and unable to communicate, gathering such subjective information is not feasible.

On the other hand, other parameters such as pupillary response can be assessed through physical examination techniques, as these are objective indicators of brain function and neurological status. Tidal volume, which refers to the amount of air exchanged during normal breathing, can also be measured using respiratory monitoring equipment, offering quantitative data. Objective information can be collected through various vital signs and clinical observations, which do not rely on the patient’s ability to convey feelings or sensations.