Medical jargon can provide a funny lift to your invitations in keeping with the general feeling of the party. Terms that you might consider using include things like "Signs and Symptoms," then going on to describe the general exhaustion of nursing school, or "Diagnosis: Nursing School Graduation Party" to state the purpose of the event. Other terms that can work include "RX" (or the shorthand for prescription), "Stat" for a party that is happening soon, and other medical terms.
Using a fake patient chart to invite people to your nursing school graduation party can present a visual reminder of the theme. Whether you choose to use just the format of a chart, a visual diagram of an EKG, or another recognizable medical symbol, the invitation can make the purpose of the party immediately apparent to its recipients, especially when combined with medical terminology.
Quotes using medical terms can also help pull the invitation's focus together and demonstrate the different aspects of a nursing career. For example, many quotes by famous nurse Florence Nightingale can function either alone or in combination with the previous elements, while Biblical quotes about healing can give the invitation a more serious tone.
Whether you format the invitation as a chart or use a special shape, such as a pair of scrubs, you will intrigue the recipient and help draw attention to the medical terminology. Pictures of medical items integrated into the invitation and its borders, including scrubs, protective masks, stethoscopes, or even a syringe, can help reinforce the theme.