The nurse informs a patient with a postvoid residual volume that straight catheterization must be performed to fully empty the patient’s bladder. Which rationale is most appropriate for the nurse to provide for this intervention?

The 78-year-old resident of a nursing home is brought to the emergency department for abdominal pain that is not responsive to oxycodone. She takes captopril, atenolol, lovastatin, and glyburide in addition to the oxycodone. Upon assessment, her abdomen is full and mildly tender. She has positive bowel sounds and reports passing gas but no stools for 96 hours. She denies anorexia or vomiting. A digital rectal examination is performed and stool is found in the rectum. The nurse anticipates being ordered to perform which intervention for this patient?  

The patient tells the nurse, “My doctor wants me to take a vitamin D supplement for my osteoporosis, but I just don’t want to take another pill. What are some foods I can eat to increase my vitamin D?” The nurse counsels the patient to eat which foods high in vitamin D? Select all that apply.