Most of the time when my patients have been on the phone and have seen me come into the room, they have said "I gotta go, the nurse is here" and hung up. I'd say about 99 percent of the time. I remember there was one lady that just kept on talking while I stood there with a bunch of stuff in my hand to give her, and I just kinda stood over her staring at her. She kept talking for a while. I kept on standing there until she finally hung up and said something like "sorry about that, my yappy neighbor".
My take on phone calls is this.... most of these patients have had their lives disrupted already, I try to give them their phone time as much as possible. If I'm coming into the room and see that they are on the phone, IF POSSIBLE, I try to excuse myself and come back a little later, and I'll go see someone else or do something else. But if I've got a bunch of pills in my hand or a treatment or the supplies to do a dressing change.... it's really time to get off the phone.
Another reason why I'm SO glad that my days as a bedside nurse are, for the most part, over.
I'm now working on a children's psychiatric unit, at night. I see the patients for about an hour a day, and they are on their feet knocking on my medication door, not lying in bed!