A nurse is reinforcing teaching about warfarin with a client who has a new onset of atrial fibrillation. Which of the following statements should the nurse include in the teaching?
"Warfarin dissolves clots in the bloodstream."
"This medication slows the response of the ventricles to the fast atrial impulses."
"Warfarin helps prevent strokes in clients who have atrial fibrillation."
"This medication will help maintain a normal heart rhythm."
The Correct Answer is C
Choice A reason : The statement that warfarin dissolves clots in the bloodstream is incorrect. Warfarin does not dissolve existing clots. Instead, it is an anticoagulant that works by decreasing the production of certain clotting factors in the blood, which helps prevent the formation of new clots.
Choice B reason : This statement is not accurate regarding the action of warfarin. Warfarin does not affect the electrical impulses of the heart. Medications that slow the response of the ventricles to fast atrial impulses are typically antiarrhythmic drugs, not anticoagulants like warfarin.
Choice C reason : This is the correct statement. Warfarin is prescribed for clients with atrial fibrillation to reduce the risk of stroke. Atrial fibrillation increases the risk of forming blood clots in the heart, which can then travel to the brain, causing a stroke. Warfarin's anticoagulant effect helps to prevent these clots from forming.
Choice D reason : Warfarin does not help maintain a normal heart rhythm. It is not an antiarrhythmic drug but an anticoagulant. The purpose of warfarin in atrial fibrillation is to prevent stroke by reducing the risk of clot formation, not to correct the heart rhythm.

Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason : Guided imagery is a relaxation technique that can help reduce stress and anxiety, but it does not directly address the physiological issues of dehydration and hypotension. While it may be beneficial as a complementary therapy, it is not the primary intervention for a patient suffering from these conditions.
Choice B reason : Elevating the head of the bed is generally recommended for patients who have difficulty breathing or to prevent aspiration, but it is not the standard care for hypotension. In fact, for a hypotensive patient, elevating the legs might be more beneficial to promote venous return to the heart⁹[^20^].
Choice C reason : Increasing fluid intake is the most direct and effective way to treat dehydration. When a patient is hypotensive, it often indicates a low blood volume, which can be improved by increasing fluid intake. This can be done orally if the patient is conscious and able to drink, or intravenously if they are not. The normal range for blood pressure is 90/60 mmHg to 120/80 mmHg, and maintaining adequate hydration helps to ensure blood pressure stays within this range⁸.
Choice D reason : The Valsalva maneuver is a technique used to potentially correct certain types of abnormal heart rhythms, particularly supraventricular tachycardia, and not for treating hypotension or dehydration. It involves increasing intrathoracic pressure by exhaling forcefully with a closed airway, which can have various effects on the cardiovascular system. However, it is not an appropriate intervention for a dehydrated, hypotensive patient⁹[^10^].
Correct Answer is C
Explanation
Choice A reason : Advising a client with PVD not to go barefoot is correct. Going barefoot can increase the risk of injury to the feet, which can be particularly dangerous in individuals with PVD due to poor circulation. Any injuries to the feet may heal poorly and can lead to complications such as ulcers or infections.
Choice B reason : Using a thermometer to check the temperature of bath water is a recommended practice for clients with PVD. Due to potential nerve damage and reduced sensation in the extremities, clients may not accurately gauge water temperature, leading to burns. Therefore, using a thermometer helps prevent thermal injury.
Choice C reason : Wearing stockings with elastic tops is not recommended for clients with PVD. Elastic tops can constrict blood flow in the legs, exacerbating circulation problems. Instead, clients should wear non-constricting, well-fitting socks or stockings that promote blood flow.
Choice D reason : Avoiding crossing legs at the knees is good advice for clients with PVD. Crossing the legs can restrict blood flow to the lower extremities, which is already compromised in PVD. Keeping the legs uncrossed and elevating them when possible can help improve circulation.
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