Which of the following is NOT part of the Cushing reflex triad?

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Multiple Choice

Which of the following is NOT part of the Cushing reflex triad?

The situation tested is the Cushing reflex, a response to rising intracranial pressure. This reflex manifests as a triad: bradycardia, widened pulse pressure, and irregular respirations. Bradycardia happens because the body’s baroreceptors slow the heart in an attempt to maintain cerebral perfusion under high pressure. Widened pulse pressure arises from a rise in systolic pressure with less change in diastolic pressure, reflecting sympathetic activation to push blood toward the brain. Irregular respirations occur because the brainstem controlling breathing becomes disrupted by the pressure, leading to erratic, not steady, patterns. Tachypnea, or rapid breathing, is not part of this triad. The hallmark respiratory change is irregular, not simply fast breathing. So the option describing rapid breathing does not fit the Cushing reflex triad.

The situation tested is the Cushing reflex, a response to rising intracranial pressure. This reflex manifests as a triad: bradycardia, widened pulse pressure, and irregular respirations. Bradycardia happens because the body’s baroreceptors slow the heart in an attempt to maintain cerebral perfusion under high pressure. Widened pulse pressure arises from a rise in systolic pressure with less change in diastolic pressure, reflecting sympathetic activation to push blood toward the brain. Irregular respirations occur because the brainstem controlling breathing becomes disrupted by the pressure, leading to erratic, not steady, patterns.

Tachypnea, or rapid breathing, is not part of this triad. The hallmark respiratory change is irregular, not simply fast breathing. So the option describing rapid breathing does not fit the Cushing reflex triad.

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