A nurse is reinforcing teaching with a client who has tuberculosis (TB) and a prescription for isoniazid. Which of the following instructions should the nurse include?

Choice A reason: This is the correct intervention, because avoiding IM injections can prevent bleeding and hematoma formation in the client who has low platelet count and impaired clotting.

Choice B reason: This is an incorrect intervention, because obtaining a rectal temperature once per shift can cause trauma and bleeding in the rectal mucosa, which is highly vascularized and sensitive.

Choice C reason: This is an unnecessary intervention, because the client who has thrombocytopenia does not have an increased risk of infection, unless they also have neutropenia or immunosuppression. The client should be allowed to have visitors, as long as they follow the infection control precautions.

Choice D reason: This is an incorrect intervention, because encouraging daily flossing between teeth can cause gingival bleeding and ulceration in the client who has low platelet count and impaired clotting. The client should use a soft toothbrush and avoid dental floss.

Choice A reason: This is an incorrect action, because instructing the client to blink several times after instillation of the medication can cause the medication to drain out of the eye and reduce its effectiveness.

Choice B reason: This is a correct action, but not the best one. Asking the client to look straight ahead during instillation of the medication can help the nurse to aim the drop accurately and avoid touching the eye with the dropper.

Choice C reason: This is the best action, because applying pressure to the bridge of the nose after instillation of the medication can prevent the medication from entering the systemic circulation and causing adverse effects, such as bradycardia, hypotension, or bronchospasm.

Choice D reason: This is an incorrect action, because placing each drop of the medication directly on to the client's cornea can cause irritation, injury, or infection to the eye. The medication should be placed in the lower conjunctival sac of the eye.