Final answer:
The ALS defines the normal respiratory rate for 6-12 month old infants as 30-60 breaths per minute, and the normal heart rate as 90-170 beats per minute. These values are specific for infants and will change as they grow into adolescence and adulthood.
Step-by-step explanation:
The Advanced Life Support (ALS) guidelines define the normal respiratory rate (RR) and heart rate (HR) for a 6-12 month old infant. The correct range for a RR in this age group is 30-60 breaths per minute, and the normal range for HR is 90-170 beats per minute.
It's important to note that the respiratory rate of a child decreases as they grow. Infants typically have higher rates, which gradually slow down toward adolescence. Newborn resting heart rates may be around 120 bpm, which gradually decrease until reaching young adulthood, before starting to increase again as one ages.
Variability in HR can occur due to factors such as exercise, fitness levels, and age. However, maximum HRs are commonly in the range of 200-220 bpm, with the expected maximum rate decreasing with the individual's age. In adults, a normal resting HR is within 60-100 bpm, with variations considered as bradycardia (below 60 bpm) or tachycardia (above 100 bpm) depending on the pace.