A nurse in a provider's office is reviewing the laboratory report of a young adult female client who has had the communicable disease mononucleosis for the past 3 weeks. Which of the following laboratory results indicate the client is recovering from the virus?

A) "If you experience angina, take a 10-minute rest period, then resume exercise."
It's important for clients to stop exercising immediately and consult a healthcare provider if they experience angina during exercise. Resting and then resuming exercise can be unsafe without medical advice, as angina indicates insufficient blood flow to the heart.

B) "Stop exercising if your heart rate increases by 20 beats per minute from baseline."
An increase in heart rate during exercise is expected, and stopping at a 20 BPM increase may be overly cautious. Clients should be taught to monitor for excessive fatigue or symptoms like dizziness, but a 20 BPM increase alone isn't necessarily a concern.

C) "Limit your exercise to an indoor facility to avoid exposure to the sun."
While excessive sun exposure can be a concern for some individuals, limiting exercise to indoors is unnecessary unless there are specific contraindications. Clients should be encouraged to exercise in environments they enjoy, with appropriate sun protection if outdoors.

D) "Begin by walking half a mile two times a day for the first week."
This recommendation is a reasonable starting point for postoperative exercise. Walking is a low-impact exercise that can help improve cardiovascular health gradually. Clients should gradually increase their activity level based on their tolerance and healthcare provider's advice.

A) Use petroleum jelly on a cotton ball to plug your ear when shampooing.
This technique helps prevent water from entering the ear during activities like showering. While it is useful for keeping the ear dry, it does not directly address preventing trauma or further hearing impairment post-surgery.

B) Clean dried blood in your ear canal with a cotton-tipped applicator.
Using cotton-tipped applicators can cause damage to the delicate ear canal and potentially disturb the surgical site. This action increases the risk of infection and trauma, potentially worsening hearing loss instead of preventing it.

C) Avoid blowing your nose for 1 month after surgery.
Refraining from nose blowing is essential because it prevents pressure changes that could disrupt the surgical repair. Such pressure changes can lead to complications like graft displacement, which can cause trauma and impair hearing.

D) Notify your provider if you have popping or crackling sensations in the affected ear.
Popping or crackling can be common as the ear heals and adjusts. These sensations typically do not indicate a problem unless accompanied by pain or other symptoms. Thus, while monitoring is important, it is not a primary preventative measure for trauma or hearing issues.