Rhythmic waxing and weaning of respiration is called?

AIIMS Patna NO - 2020

Medical Surgical Nursing

Easy

Appeared in: AIIMS Patna NO - 2020

Explanation

Cheyne-Stokes respiration is defined as a periodic breathing pattern with a gradual increase (waxing) and decrease (waning) in the depth and rate of respirations.
This cyclical pattern is followed by a period of apnea (temporary cessation of breathing).
The entire cycle, as depicted in the provided image, typically lasts from 30 seconds to 2 minutes.
It is caused by a delayed response of the respiratory centers in the brain to changes in blood gas levels, often seen in conditions like heart failure and neurological damage.

Option A: Hypoventilation is characterized by abnormally slow and shallow breathing, which leads to an increase in carbon dioxide in the blood. It does not involve a cyclical waxing and waning pattern.
Option B: Orthopnoea is shortness of breath that occurs when a person is lying flat and is relieved by sitting or standing up. It is a symptom related to posture, not a specific rhythmic breathing pattern.
Option C: Hyperventilation is characterized by rapid and deep breathing, which leads to a decrease in carbon dioxide in the blood. It is a consistent pattern of over-breathing, not a cyclical one with periods of apnea.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Abnormal Respiratory Patterns as background academic context rather than a clinical decision trigger.
Recognizing Cheyne-Stokes respiration is a critical nursing skill, as it often signals serious underlying pathology such as congestive heart failure, stroke, or increased intracranial pressure.
The appearance of this breathing pattern in a patient can be an ominous sign, often preceding respiratory arrest, and requires immediate assessment and notification of the physician.
What if? If the patient's breathing was irregularly irregular with unpredictable periods of apnea, instead of the regular waxing and waning pattern, the condition would be called Biot's (or ataxic) breathing, which points towards severe brainstem damage.

How to Approach the Question

First, identify the key descriptive terms in the question: 'rhythmic waxing and weaning of respiration'.
Understand that 'waxing' means increasing and 'waning' (or 'weaning' as used here) means decreasing.
Recall the definitions of the different respiratory patterns provided in the options.
Match the description in the question to the correct definition. Cheyne-Stokes respiration is the classic term for a pattern of breathing that cyclically increases and decreases.
If an image is provided, analyze it to see if it visually represents the pattern described. The image here clearly shows the crescendo-decrescendo pattern with apnea, confirming the diagnosis.

Concept Tested & Keywords

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