What assessment finding indicates to the nurse that timolol (Timoptic) has been effective?

Correct Answer: B

Rationale: Timolol and carteolol are available in an ophthalmic form of the drug for reduction of intraocular pressure in patients with open-angle glaucoma. A decrease in intraocular pressure would indicate it has been effective. Timolol can also be used to treat hypertension but an increase in blood pressure would indicate the drug was not effective. Reduced pulse rate and reduced angina would not be related to this drug, especially if it was given in ophthalmic form when very little of the drug is absorbed systemically.

Correct Answer: D

Rationale: High threshold mechanoreceptors are responsible for sensing mechanical stimuli such as pressure and touch. When these receptors are activated, one of the body's reactions is to produce analgesia, which refers to the relief of pain or a decreased sensitivity to painful stimuli. This analgesic effect is a protective mechanism that helps reduce the perception of pain in response to potentially harmful mechanical stimuli. Therefore, the reaction of the body to high threshold mechanoreceptors is often associated with analgesia rather than tolerance, withdrawal reflex, inflammation, or suppuration.

Correct Answer: C

Rationale: In the context of mild hyponatremia, which is a condition where there is a lower-than-normal concentration of sodium in the blood, treatment often involves administering intravenous normal saline infusion administered slowly. This helps to incrementally increase sodium levels in the blood while also ensuring proper hydration. Normal saline is preferred over other fluid solutions as it helps to maintain a stable electrolyte balance. In cases of severe hyponatremia or symptoms like seizures, more aggressive treatment may be necessary, but for mild cases like that described in the scenario, normal saline infusion is typically the appropriate choice.

Correct Answer: A

Rationale: Penicillin G is a beta-lactam antibiotic that can cause severe allergic reactions, including anaphylaxis. Having epinephrine on hand is crucial for managing such emergencies. Collecting a culture and sensitivity before the first dose ensures the infection is caused by a penicillin-susceptible organism. Mouth ulcers are not a common side effect of penicillin, but monitoring for superinfections like oral thrush is important. Limiting fluid intake to 1000 mL/day is incorrect, as adequate hydration helps maintain renal function and prevents crystalluria. No particular interventions are required is incorrect, as penicillin requires careful monitoring for efficacy and adverse effects.

Correct Answer: A

Rationale: Patients with peptic ulcers should stop taking NSAIDs. NSAIDs, which stands for nonsteroidal anti-inflammatory drugs, can worsen peptic ulcers by increasing the risk of gastrointestinal bleeding and ulcer formation. NSAIDs work by inhibiting prostaglandin synthesis, which can lead to a decrease in the protective mucus production in the stomach lining, allowing gastric acid to damage the mucosa and exacerbate peptic ulcers. Therefore, it is crucial for patients with peptic ulcers to avoid NSAIDs to prevent further damage to the gastrointestinal tract.