Final answer:
While checking for breathing and a pulse, the correct interval is every 60 seconds. The pulse you feel is the pressure of the blood as your heart pumps. To find the time per beat for a 150 beats per minute heart rate during exercise, divide 60 seconds by 150 to get 0.4 seconds per beat.
Step-by-step explanation:
When simultaneously checking for breathing and a pulse, the correct time interval to adhere to is every 60 seconds. This means, after a minute of assessing these vital signs, you would repeat the process to ensure the individual is still breathing and has a pulse. In the context of cardiac events, or when performing CPR, time is critical, and regular checks help assess the person's condition and effectiveness of the life-saving measures being administered.
When you feel your pulse, you're feeling the pressure of the blood as your heart pushes it through your arteries. To measure your pulse rate, you can count how many beats you feel in 10 seconds and then multiply by 6 to estimate the beats per minute. Doing the reverse, if your heart rate is 150 beats per minute during strenuous exercise, the time per beat in units of seconds is calculated by dividing 60 (the number of seconds in a minute) by 150, giving you 0.4 seconds per beat.