Depends on your intention, if you want to stay in US after graduation, the healthcare management area has very limited job openings. Pharm Sci could be doing the lab work and also doing some R&D related management work the drug company.
You may try "Regulatory affairs". Just curious why you are interested in 护理学. As a job it is fine, it is not a very high-pay job nor an easy job in US. As for your career you can have better choices.