N.H. is started on sulfamethoxazole 800mg/ trimethoprim 160mg (Bactrim DS) 1 tablet PO bid ×10 days for a urinary tract infection (UTI). However, 2 days later, N.H. is in the bathroom, and she is very upset. She has just voided; there is blood on the toilet, and the water is bright red with blood. You help the AP clean N.H. and help her into bed.

Describe your assessment steps.