Progressive care nurse, PCU RN, PCU, progressive care, progressive care unit, patient care, PCU nurse, nurse, nursing, RN, R.N., registered nurse, healthcare, health care, hospital, step down nurse, telemetry nurse, ER holding From its red-brick row houses and cobblestone streets, to its modern waterfront and impressive Camden Yards ballpark, Baltimore’s intriguing mish-mash of old and new makes this lively city a popular destination.