What respiratory rate should an infant ideally maintain during rest?

The ideal respiratory rate for an infant during rest is typically between 30 to 60 breaths per minute. This range is normal for infants due to their smaller lung capacity and higher metabolic rate compared to older children and adults. Infants require more frequent breaths to ensure adequate oxygen delivery and carbon dioxide elimination, which is crucial for their growth and development.

This range, 30 to 60 breaths per minute, accounts for the physiological differences of infants, reflecting their more rapid breathing patterns needed to support their higher oxygen demands. It's important for healthcare professionals to recognize this normal range when assessing an infant's respiratory status, as deviations can indicate respiratory distress or pathology.

In contrast, respiratory rates that are lower, such as those listed in the other options, would not accurately reflect the normal needs of an infant. For example, a range of 10-20 breaths/min or 20-30 breaths/min would be more characteristic of older children or adults, who have lower metabolic demands. Similarly, a range of 30-45 breaths/min is also insufficient for infants, as it does not encompass the entire necessary range for their age group. These lower rates could signal a potential concern if observed in an infant, necessitating further evaluation.