Day, meanwhile, is happy to be in a familiar position. The 27-year-old Australian already has three wins this year, including at Whistling Straits, where he was in the lead going into the final round and closed out the tournament for his first major title.
inpatient (care/unit/ward) - is the one where a patient stays for 24h. outpatient (...) - is the one where a patient spends most of the day (e.g. 8 hours) ambulatory care - is the one where a patient visits their doctor from time to time (e.g. 1-hour appointments every Monday - definitely a case in psychiatry, don't know about other specialties)
Ambulatory strictly means the ability to walk but in the context of surgery, it refers to patients who are able to leave the hospital the same day as the surgery, without being admitted. Ambulatory surgery is referred to by other names, commonly called minimally invasive surgery, outpatient surgery or same day surgery.