A client with a history of asthma and bronchitis arrives at the clinic with shortness of breath, productive cough with thickened, tenacious mucus, and the inability to walk up a flight of stairs without experiencing breathlessness.
Which action is most important for the nurse to instruct the client about self-care?

Choice A rationale:

Direct identification of the causative organism: A culture for sensitive organisms is the most direct and definitive way to identify the specific bacteria or other microorganisms that are causing the infection in the wound. This information is crucial for guiding the selection of the most appropriate antibiotic therapy.

Tailored antibiotic therapy: By knowing the exact organism responsible, healthcare providers can prescribe antibiotics that are specifically effective against that organism, ensuring optimal treatment and reducing the risk of antibiotic resistance.

Informed infection control measures: The results of the culture can also inform appropriate infection control measures to prevent the spread of the infection to other patients or healthcare workers.

Monitoring treatment effectiveness: Cultures can also be used to monitor the effectiveness of antibiotic therapy. If the culture results show that the bacteria are no longer present after a course of antibiotics, this indicates that the treatment has been successful.

Choice B rationale:

Non-specific marker of inflammation: C-reactive protein (CRP) is a non-specific marker of inflammation that can be elevated in various conditions, including infections, but also in non-infectious conditions such as autoimmune diseases and trauma.

Limited diagnostic value for wound infections: While an elevated CRP level may suggest the presence of an infection, it does not provide information about the specific causative organism, which is essential for guiding antibiotic therapy.

Supplementary role: CRP levels can be used in conjunction with other clinical findings and laboratory tests to assess the severity of an infection and monitor the response to treatment, but it should not be relied upon as a sole diagnostic tool for wound infections.

Choice C rationale:

Not directly indicative of wound infection: Blood pH level primarily reflects the acid-base balance of the body and is not directly indicative of a wound infection.

Alterations in other conditions: Blood pH can be altered in various conditions, including respiratory and metabolic disorders, and is not specific to wound infections.

Limited role in diagnosis: While significant alterations in blood pH may suggest a serious systemic infection, it does not provide information about the location or causative organism of the infection.

Choice D rationale:

Not directly related to wound infection: Serum blood glucose level is primarily used to monitor diabetes and is not directly related to wound infections.

Impaired wound healing in diabetes: While elevated blood glucose levels can impair wound healing and increase the risk of infections in diabetic patients, it is not a diagnostic test for wound infections in general.

Secondary consideration: Blood glucose levels may be considered as part of the overall assessment of a patient with a wound infection, particularly in those with diabetes, but it is not a primary diagnostic tool.

Choice A rationale:

Radiation exposure to the eye is a serious condition that requires immediate medical attention. However, it is not a contraindication for ophthalmic ketorolac. In fact, ketorolac may be used to treat pain and inflammation associated with radiation exposure to the eye.

Ophthalmic ketorolac is a nonsteroidal anti-inflammatory drug (NSAID) that works by inhibiting the production of prostaglandins, which are substances that cause inflammation and pain.

Radiation exposure can damage the cells of the eye, leading to inflammation and pain. Ketorolac can help to reduce these symptoms.

However, it is important to note that ketorolac does not address the underlying cause of radiation exposure, and further treatment may be necessary.

Choice B rationale:

Corneal abrasion is a scratch on the surface of the cornea, the clear outer layer of the eye. It is a common eye injury that can be caused by a variety of factors, such as getting poked in the eye, rubbing the eye too hard, or wearing contact lenses for too long.

Ophthalmic ketorolac is contraindicated in patients with corneal abrasions because it can delay healing and increase the risk of infection.

This is because ketorolac inhibits the production of prostaglandins, which are involved in the healing process. Prostaglandins also play a role in fighting infection.

Therefore, using ketorolac in a patient with a corneal abrasion could potentially lead to a more serious infection.

Choice C rationale:

Chemical burn to the eye is a serious injury that requires immediate medical attention. Ophthalmic ketorolac is not typically used to treat chemical burns to the eye.

This is because ketorolac is not effective in reducing inflammation caused by chemical burns. In addition, ketorolac can potentially worsen the injury by delaying healing.

Choice D rationale:

Foreign body in the eye is a common eye injury that can be caused by a variety of objects, such as dust, sand, or metal shavings. Ophthalmic ketorolac is not typically used to treat foreign bodies in the eye.

This is because ketorolac will not help to remove the foreign body from the eye. In addition, ketorolac can potentially worsen the injury by delaying healing.