JBL Module 5 Practice Exam 2026 – Complete Test Prep

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Which breathing pattern is most indicative of increased intracranial pressure?

increased rate and depth with the distinct odor of acetone on the patient’s breath

increased rate with a normal inspiratory time and a prolonged expiratory time

irregular rate, pattern, and volume of breathing with intermittent periods of apnea

Elevated intracranial pressure can disrupt the brainstem centers that control breathing, leading to an irregular, variable pattern with episodes of apnea. The described breathing—rates, depths, and rhythms that are inconsistent plus intermittent pauses—best reflects this brainstem dysfunction and is the most specific sign among the options for increased ICP. The other patterns point to different issues: an acetone odor with rapid breathing suggests metabolic problems like diabetic ketoacidosis; rapid breathing with a prolonged expiratory phase isn’t typical of ICP; and slow, shallow breaths progressing to apnea could indicate severe central or metabolic problems but not the classic irregular, erratic pattern tied to brainstem injury from raised ICP.

slow, shallow, occasional gasps that progress to prolonged periods of apnea