Which condition is characterized by a ratio of increased breathing rate and then periods of no breathing?

• A. Respiratory distress
• B. Hyperventilation
• C. Cheyne-Stokes respirations
• D. Apneustic breathing

Answer: (C)

The condition characterized by a ratio of increased breathing rate followed by periods of no breathing is known as Cheyne-Stokes respirations. This respiratory pattern is particularly notable for the cyclical nature of breathing where the individual experiences gradual increases in the depth and rate of breaths, reaching a peak, followed by a decrease in breathing until there is a temporary cessation of breath (apnea). This cycle can repeat itself multiple times.

Cheyne-Stokes respirations are often associated with conditions such as heart failure, stroke, or increased intracranial pressure. The oscillation between hyperventilation and apnea reflects the body's attempt to regulate carbon dioxide levels and oxygenation, which can become impaired in certain medical conditions.

In contrast, other conditions mentioned, such as respiratory distress, hyperventilation, and apneustic breathing, have different characteristics and do not exhibit this specific cyclical pattern. Respiratory distress refers to a general state of difficulty in breathing, while hyperventilation involves rapid, shallow breathing without the alternating periods of apnea. Apneustic breathing is characterized by prolonged inhalation with short exhalation, which lacks the cyclical nature of Cheyne-Stokes.