Before a patient does an FVC test, the pneumotachometer shou…

Before a patient does an FVC test, the pneumotachometer should have the following done:    A.The gas analyzer should be calibrated.    B.A CO2-absorbing material should be placed in line with the circuit.    C.A 3-L volume should be pumped into and out of the circuit to check for leaks.    D.The kymograph speeds should be checked.

Under which of the following conditions would you postpone a…

Under which of the following conditions would you postpone a diffusing capacity test?I. Just before the test, the patient smoked two cigarettes.II. Just before the test, the patient had an episode of severe coughing.III. Just before the test, the patient had a long wait at a busy bus stop.