What should be monitored to evaluate the effectiveness of enoxaparin in a patient with deep vein thrombosis (DVT)?

Correct Answer: C

Rationale: Rationale: 1. Enoxaparin is a low molecular weight heparin that primarily affects the intrinsic pathway of coagulation. 2. INR is used to monitor the effectiveness of anticoagulants affecting the intrinsic pathway. 3. Monitoring INR helps ensure the patient is within the therapeutic range to prevent clotting without excessive bleeding. 4. PT and PTT primarily evaluate the extrinsic and intrinsic pathways, respectively, not specific to enoxaparin. 5. Platelet count is not directly related to monitoring the effectiveness of enoxaparin in treating DVT.

Correct Answer: C

Rationale: Step-by-step rationale for choice C: 1. Metformin can cause gastrointestinal side effects. 2. Taking it with meals helps reduce stomach upset. 3. It also helps in better absorption and effectiveness. 4. Therefore, the nurse should instruct the patient to take metformin with meals. Summary of other choices: A: Taking on an empty stomach can worsen gastrointestinal side effects. B: Metformin doesn't typically cause hypoglycemia. D: Increasing simple carbohydrates can counteract the effects of metformin.

Correct Answer: B

Rationale: The primary purpose of prescribing montelukast for a patient with asthma is to prevent asthma attacks. Montelukast is a leukotriene receptor antagonist that helps to reduce inflammation in the airways, thereby preventing asthma symptoms and attacks. It is not used to relieve acute bronchospasm (Choice A), as it is not a fast-acting rescue medication like a bronchodilator. Montelukast also does not thin respiratory secretions (Choice C) or suppress cough (Choice D) as its main mechanism of action is to prevent and control asthma symptoms by inhibiting leukotrienes.

Correct Answer: A

Rationale: The correct answer is A: Hyperkalemia. Lisinopril is an ACE inhibitor that can cause potassium retention, leading to hyperkalemia. Monitoring potassium levels is crucial to prevent serious complications like cardiac arrhythmias. Hypoglycemia (B) is not a common side effect of lisinopril. Bradycardia (C) and constipation (D) are also not typically associated with lisinopril use. Hyperkalemia is the most critical side effect to monitor in this case.

Correct Answer: B

Rationale: The correct answer is B: Weight gain. Olanzapine is known to cause metabolic side effects, including weight gain. This is important to monitor as it can lead to various health issues such as diabetes and cardiovascular problems. Hypertension (A), hypoglycemia (C), and bradycardia (D) are not commonly associated with olanzapine use, making them less likely side effects to monitor in this case.