The Patient Has Been Taught How to Use Diaphragmatic Breathing

The patient has been taught how to use diaphragmatic breathing.When the patient returns from surgery,however,he cannot be placed upright and must remain flat.Of what must the nurse be aware?

A) Diaphragmatic breathing cannot be done in this position
B) Alternative breathing exercises need to be found
C) Diaphragmatic breathing exercises still can be performed
D) Diaphragmatic breathing exercises may be postponed