A patient is connected to a 12-lead ECG monitor and pulse oximeter before an exercise test.The HR displayed by the ECG monitor is 97;the pulse oximeter reads an HR of 141 with an SpO2 of 85%.Which of the following would be the most appropriate action?
A) Move the pulse oximeter sensor to an alternate site. B) Check all ECG lead wires for a good connection. C) Obtain an arterial blood gas sample as quickly as possible. D) Document the readings and proceed with the test.