So the way inpatient (hospital) settings work here in the US is that patients have their own rooms (occasionally shared rooms, with one or maybe two other people, but by and large patients have a private room). Usually the doctors round in the morning, meaning they stop in to the room, talk with and examine the patient, and then update the plan of care as necessary. The nurses then execute the plan of care--the nurses administer medications, explain processes, etc. The nurses cannot diagnose a disease (officially), nor can they prescribe medications (officially). Typically, conversations patients and nurses have result in the nurse suggesting a doctor look at a specific cluster of symptoms or test for a specific diagnosis, and/or prescribe given things. Nurses are supposed to be advocates for patients. Doctors plan the care. Excepting surgeons, doctors rarely actually administer the care.

The inpatient system works this way because it is easier to scale--our nurses often have bachelors degrees, with an emphasis on biosciences: pharmacology, pathophysiology, anatomy and physiology, etc. The providers (doctors, hospitals) are reimbursed based on what is prescribed (the procedures) and (this is key) how many people they see. So, it makes the most sense, financially, to have the doctors see each patient for, say, 10-15 minutes only, and then have the nurses carry out the plan of care. If you have a good working relationship between the doctor and the nurse, the doctors will often rely on what the nurse thinks to decide on what tests to order and/or what meds to prescribe. How does it work in your country?