Which of the following respiratory patterns indicates increasing intra cranial pressure?

SCTIMST Staff Nurse - 2016

Medical & Surgical Nursing

Easy

Appeared in: SCTIMST Staff Nurse - 2016

Explanation

Slow, irregular respiration is a component of Cushing's triad, a set of late and ominous signs indicating severely increased intracranial pressure (ICP).
This breathing pattern results from compression of the respiratory centers in the brainstem (medulla and pons).
Specific patterns include Cheyne-Stokes respiration (alternating apnea and hyperventilation) and Biot's (ataxic) respiration (unpredictable irregularity), both of which fall under the category of slow, irregular breathing.

Option A: Rapid, shallow breathing (tachypnea) is not a classic sign of late-stage ICP. It is more commonly caused by anxiety, pain, fever, or primary pulmonary conditions.
Option C: Orthopnoea is difficulty breathing when lying flat. It is a classic symptom of fluid overload in congestive heart failure, not increased ICP.
Option D: Abdominal (diaphragmatic) breathing is the normal pattern of breathing for infants and can be seen in adults with high spinal cord injuries. It is not a specific sign of increasing ICP.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Respiratory manifestations of increased intracranial pressure (ICP) as background academic context rather than a clinical decision trigger.
Recognizing slow, irregular respirations as part of Cushing's triad is a critical nursing skill. It signifies a neurological emergency requiring immediate intervention to prevent brain herniation and death.
A nurse observing this sign must immediately assess for the other components of the triad, perform a rapid neurological assessment (like GCS), and notify the physician or rapid response team.
What if? If a head injury patient initially presents with rapid, shallow breathing, the nurse should not rule out developing ICP. This could be an early, non-specific response to hypoxia or pain. However, a change from rapid breathing to slow, irregular breathing indicates a dangerous progression and worsening of the patient's condition.

How to Approach the Question

First, identify the key concepts in the question: "respiratory patterns" and "increasing intracranial pressure (ICP)".
Recall the classic triad of signs associated with late-stage, severe ICP, which is known as Cushing's triad.
Remember the three components of Cushing's triad: 1) Hypertension (with a wide pulse pressure), 2) Bradycardia (slow heart rate), and 3) Irregular respirations.
Evaluate each option. "Slow, irregular respiration" directly matches one of the components of Cushing's triad.
Eliminate the other options by identifying the conditions they are typically associated with: rapid/shallow breathing (anxiety, fever), orthopnoea (heart failure), and abdominal breathing (infants, spinal cord injury).

Concept Tested & Keywords

Concept Tested: Respiratory manifestations of increased intracranial pressure (ICP)
Stem keywords: respiratory patterns, increasing intra cranial pressure
Lead-in keywords: Which
Negative lead-in flag: false

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E6 Physiology Guyton 4SAE Part 2A p. 114-116

E6 Nursing Fundamentals Potter Perry 12e Part 3 pp. 23-25, 22-24