I have spoken to some doctor friends of mine and they say skirt scrubs are
available so you need not wear pants. If the shirts are too low cut wear a
clean white undershirt to cover yourself and wear a much larger size than
normal so the sleeves will cover you properly. This is from a tznius point
A Rabbinic perspective requires me to caution a doctor or resident to not
get caught up in something that might hinder the care of someone ill. Better
for your elbows to be slightly exposed than losing a patient.
Rabbi Mark Schaffel