Which of the Following Techniques Are Useful in Measuring the Respiratory

Multiple Choice

Which of the following techniques are useful in measuring the respiratory rate in patients who are spontaneously breathing and alert?
1) Ask the patient to breathe normally.
2) Lay the hand you are using to count the patient's pulse on the patient's abdomen, and watch abdominal movements.
3) Count the rate for 30 s and multiply by 2.
4) Pretend to be counting the pulse while counting the respiratory rate.

A) 1 and 4
B) 2 and 3
C) 2, 3, and 4
D) 1, 2, and 3