Gradual increase in rate and depth of respiration is known as?

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2018

Explanation

Cheyne-Stokes respiration is a type of periodic breathing characterized by a distinct cyclic pattern.
This cycle begins with a gradual increase in both the rate and depth of breaths, known as the crescendo phase.
This is followed by a gradual decrease in rate and depth (decrescendo phase), which ends in a period of apnea (temporary absence of breathing).
The description in the question, "gradual increase in rate and depth of respiration," precisely matches the crescendo phase of the Cheyne-Stokes pattern.

Option A: Hyperventilation is a sustained state of rapid and deep breathing, not a cyclic pattern with a gradual increase and decrease.
Option B: Hypoventilation is the opposite of what is described; it involves a decrease in the rate and depth of breathing.
Option C: Kussmaul respiration is characterized by deep, rapid, and labored breathing that is regular and sustained, not cyclic. It is a compensatory mechanism for metabolic acidosis and does not have the waxing and waning pattern.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of abnormal respiratory patterns as background academic context rather than a clinical decision trigger.
Recognizing different respiratory patterns is a fundamental nursing assessment skill, as they are often key indicators of serious underlying physiological or neurological problems.
Cheyne-Stokes respiration is a significant clinical sign that can indicate conditions like severe congestive heart failure, stroke, traumatic brain injury, or increased intracranial pressure. It is also commonly observed in patients during the end-of-life process.
A nurse observing this pattern should promptly assess the patient's neurological and cardiovascular status and report the findings to the healthcare provider.

How to Approach the Question

First, identify the key descriptive words in the question stem: 'gradual increase,' 'rate,' and 'depth' of respiration.
The term 'gradual' is crucial as it suggests a changing or cyclic pattern, rather than a constant state.
Next, recall the definitions of the four respiratory patterns provided as options.
Compare the question's description to each definition. Hyperventilation is a sustained increase. Hypoventilation is a decrease. Kussmaul respiration is deep and rapid but regular and sustained.
Conclude that Cheyne-Stokes respiration is the only pattern that features a characteristic 'gradual increase' (crescendo) as part of its cycle, making it the correct match.

Concept Tested & Keywords

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E6 Physiology Guyton 4SAE Part 2A p. 115-117

E6 Physiology Essentials Sembulingam 10e Part 3 p. 1-3

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