Final answer:
The nurse's teaching of coughing and deep breathing exercises to a client before surgery is a preventive intervention aimed at reducing the risk of postoperative respiratory complications.
Step-by-step explanation:
The nurse is performing preoperative teaching for a client who is scheduled for surgery, which includes coughing and deep breathing exercises. This type of nursing intervention is considered a form of prevention. The nurse is anticipating potential postoperative complications such as respiratory problems and is taking steps to teach the client how to mitigate these risks. Teaching the client these exercises before they develop respiratory issues can prevent complications like pneumonia, which is not uncommon after surgeries due to reduced mobility and lung function.