The PTA is seeing Mr. Jones for PT secondary to post-op TKA…

The PTA is seeing Mr. Jones for PT secondary to post-op TKA x 2 days. The patient is on oral pain medication, ROM is 35-74 degrees and MMT 3/5 for available ROM. While working on bed mobility and transfers Mr. Jones complains of light headedness, nausea, and feeling like he is going to pass out. What should the PTA do?