To have a deep sleep

sure,
you can say deep sleep, light sleep or REM sleep..
they are collocations..
but you should remove the article 'a' because the word sleep is uncountable..

"The patient has a deep sleep."

It seems unnatural to me.

We sometimes ask, "Did you have a nice sleep?"
"Having a sleep" or "having some sleep" refers to the event.

The patient is in a deep sleep.
The patient's sleep is very deep.

You could say, "The patient had

thank you so much!

It's not about (a?) nice sleep that patient had last night. I need a phrase to describe his

sleep pattern.

So what about the indefinite article? Should I use it? I am totally confused.

anyway, I guess "has a normal sleep pattern" would do.

Avangi"The patient has a deep sleep."

It seems unnatural to me.

Me too. In Helsinki we would say: The patient is sound/fast asleep.

CB

there seems to be a difference between fast and deep

TinyPixieIs this phrase correct?
"The patient has a deep sleep." Hi, Pixie.
Your error is in the use of the verb "to have," not in the use of "deep."

The patient is in a very deep sleep is the idiomatic way to say it.

Rgdz, - A.

there seems to be a difference between fast and deep

Not reall

Hi,

If you want to make a geeral statement about 'every time the patient sleeps', you could say 'He sleeps deeply'.

The Simple Present tense tells us this is his habit. or normal routine.

Best wishes, Clive

The patient is in a deep sleep.