In the treatment of angina, the mechanism of action of a beta-adrenergic blocker is:

Decreased peripheral resistance.

Increased contractility and heart rate.

Relaxation of arterial and venous smooth muscle.

Slowed heart rate and decreased contractility of the heart.

Answer and Explanation

The Correct Answer is D

A. Beta-adrenergic blockers primarily work by decreasing heart rate and contractility rather than directly affecting peripheral resistance.

B. Beta-adrenergic blockers decrease contractility and heart rate, rather than increasing them.

C. Relaxation of arterial and venous smooth muscle is typically associated with calcium channel blockers, not beta-adrenergic blockers.

D. Beta-adrenergic blockers slow the heart rate and reduce the force of contraction of the heart muscle, reducing myocardial oxygen demand and helping to relieve angina symptoms.

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Correct Answer is D

Explanation

Explanation:

A. Adequate hydration is important to prevent lithium toxicity; decreasing fluid intake is not recommended.

B. Constipation can slow the excretion of lithium and may increase the risk of toxicity, but it is not the most appropriate preventive measure.

C. Sudden changes in sodium intake can affect lithium levels, so restricting sodium-rich foods without medical advice is not advisable.

D. Clients should be cautious with physical activity in hot weather, as excessive sweating can lead to dehydration, increasing the risk of lithium toxicity.

A. “Do you give the medication with food?" B. "What time do you give your child the medication?" C. "Does your child have sleep apnea?" D. "Is your child having problems at school?

Correct Answer is B

Explanation

A. Giving methylphenidate with food may help alleviate gastrointestinal side effects but is not directly related to sleep disturbances.

B. The timing of medication administration, particularly if methylphenidate is being given too late in the day, can contribute to sleep disturbances.

C. Sleep apnea is a significant concern but is not directly related to the child's sleep disturbances since starting methylphenidate.

D. While school performance may be impacted by sleep disturbances, addressing the timing of medication administration is more directly relevant to the child's sleep issues.

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In the treatment of angina, the mechanism of action of a beta-adrenergic blocker is:

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is caring for a client who has a new prescription for lithium carbonate. When reinforcing teaching with the client about ways to prevent lithium toxicity, the nurse should advise the client do which of the following?

Correct Answer is D

Explanation

The mother of an 8-year-old client who is receiving methylphenidate (Ritalin) tells the nurse the child has not slept well since being started on this drug. Which assessment question is a priority for this client?

Correct Answer is B

Explanation

A patient is taking a monoamine oxidase inhibitor for depression. In planning care for this patient, the nurse knows that a hypertensive crisis may be possible and plans on having what drug on hand as an antidote?

The patient is instructed when taking calcium channel blockers to use extreme caution when taking which of the following medications?

The patient is being discharged with nitroglycerin (Nitrostat). Patient education would include instructions to:

The client is in a manic phase of bipolar disorder, and is receiving lithium. What will the nurse expect to assess when the client's lithium level is 0.3 mEq/L?

According to the nurse instructing the client, which foods contain high amounts of omega-3 fatty acids? (Select all that apply.)

A nurse is reinforcing teaching with a group of nurses about the administration of nitroglycerin. Which of the following routes of administration provides the most rapid onset for the client?

A client asks the nurse to explain the difference between stable and unstable angina. What is the best response by the nurse?

The client has been taking nicotinic acid. Which adverse effects are common with nicotinic acid? (Select all that apply.)