A nurse is planning care for a client who is postoperative following the insertion of an arteriovenous graft in their left forearm. Which of the following actions should the nurse include in the plan of care?

Choice A reason: The Mantoux skin test, also known as the tuberculin skin test, measures the immune response to the tuberculin purified protein derivative injected into the skin. An induration of less than 1 mm is not considered a positive result. However, the size of the induration in the Mantoux test does not indicate whether the person is infectious or not.

Choice B reason: Negative sputum cultures for acid-fast bacillus (AFB) are a strong indication that the client is no longer infectious. Pulmonary tuberculosis is diagnosed and monitored by the presence of AFB in the sputum. When the sputum cultures are negative, it suggests that the client is not excreting the bacteria and is less likely to spread the infection to others.

Choice C reason: While no longer coughing up blood-tinged sputum is a sign of clinical improvement, it does not necessarily mean that the client is no longer infectious. The absence of blood in the sputum may indicate reduced inflammation or healing of lung tissue, but the client could still be capable of transmitting tuberculosis if AFB is present in the sputum.

Choice D reason: The Quantiferon-TB Gold test is a blood test that measures the immune response to Mycobacterium tuberculosis antigens. A positive result indicates that the person's immune system has been exposed to the bacteria, but it does not determine if the person is infectious. The term "positive (negative)" is contradictory and does not provide clear information about the client's infectious status.

Choice A reason: Irrigating the affected eye from the inner corner toward the outer corner is the recommended method for ocular irrigation. This technique helps to flush out the chemical agent without risking further contamination to the other eye or nasal passages.

Choice B reason: Positioning the client sitting up with their head turned toward the right side is appropriate when irrigating the left eye. This position allows gravity to assist in the flow of the irrigation solution away from the unaffected eye, reducing the risk of cross-contamination.

Choice C reason: Placing a strip of pH paper under the upper lid of the affected eye is a critical step in ocular irrigation after a chemical splash. It is used to measure the pH of the ocular surface to ensure that the pH has normalized to a range between 7.0 and 7.2 after irrigation, indicating that the chemical has been adequately flushed out.

Choice D reason: Using sterile water for ocular irrigation is not recommended because it can cause osmotic imbalances and damage to the corneal cells. Instead, normal saline or balanced salt solutions are preferred as they are isotonic and more compatible with the physiological environment of the eye.