the nurse is reviewing a client’s medication regimen. what medication would the nurse recognize as being a schedule v (c-v) medication?

Aclient is alert and oriented. however, the oxygen saturation read via a probe on index finger shows 88%. on examination, you find that the client's hand is cold. client is talking to you comfortably. there is no shortness of breath. resp rate is 20/mt. is the reading correct? how would you verify?