The nurse educator asks the student nurse to explain the most common causes of blindness in the United States. Which of the following options will the student nurse select as one of the top causes of blindness?

Choice A reason: This is the correct answer because this describes a stupor, which is a state of near-unconsciousness or reduced responsiveness. A stuporous client shows minimal movement and verbal responses and requires extreme vigorous stimulation such as painful stimuli to awaken briefly.

Choice B reason: This is incorrect because this describes obtundation, which is a state of reduced alertness or awareness. An obtunded client is extremely drowsy and minimally responsive and requires vigorous stimulation such as shaking or shouting to wake.

Choice C reason: This is incorrect because this describes lethargy, which is a state of decreased energy or activity. A lethargic client is alert and oriented x3 (to person, place, and time), but sluggish and drowsy, and wakes to voice or gentle shaking.

Choice D reason: This is incorrect because this describes a coma, which is a state of deep unconsciousness or unresponsiveness. A comatose client does not respond to verbal stimuli or speak and shows abnormal posturing in response to pain, such as decorticate (flexion of arms and extension of legs) or decerebrate (extension of arms and legs).

Choice A Reason: This is correct because the patient's Glasgow Coma Scale score is 9. The Glasgow Coma Scale is a tool that assesses the level of consciousness of a patient with a head injury by measuring three parameters: eye opening, verbal response, and motor response. The patient's eye opening score is 3 (opens eyes to verbal command), verbal response score is 4 (confused speech), and motor response score is 2 (withdraws from pain). The total score is the sum of these three scores, which is 9.

Choice B Reason: This is incorrect because the patient's Glasgow Coma Scale score is not 11. To get a score of 11, the patient would need to have a higher motor response score, such as 4 (withdraws to touch) or 5 (localizes to pain).

Choice C Reason: This is incorrect because the patient's Glasgow Coma Scale score is not 15. To get a score of 15, the patient would need to have the highest scores for all three parameters, such as 4 (opens eyes spontaneously), 5 (oriented speech), and 6 (obeys commands).

Choice D Reason: This is incorrect because the patient's Glasgow Coma Scale score is not 13. To get a score of 13, the patient would need to have a higher verbal response score, such as 5 (oriented speech).