One of my patients needed a pelvic exam. The OB/GYN doc, who was female, asked me to chaperone. I did. Now whether the physician was female or male if she/he did something unseemly, and I noticed...
I never understand a chaperone of the same sex as the patient as though if something unseemly happens I am going to side with the nurse of my sex. That is a sexist element in this