A nurse recognizes that alterations in cardiac output are caused by changes in heart rate, preload, afterload, and contractility. Which interventions are correctly matched to treat the cause of low cardiac output? Select all that apply.
a) Low afterload: administer vasopressor.
b) Low afterload: administer vasodilator.
c) Low right atrial (R
Low afterload: administer vasopressor.
Low afterload: administer vasodilator.
Low right atrial (RA) pressure: administer diuretics.
Low preload: administer fluid bolus.
High preload: administer diuretic or vasodilator.
Correct Answer : D
Choice A reason: Administering a vasopressor is not appropriate for low afterload. Vasopressors are used to increase blood pressure by causing vasoconstriction, which increases afterload. However, the administration of a vasopressor for low afterload is contradictory because the goal for low afterload would be to reduce the strain on the heart, not to increase it.
Choice B reason: Administering a vasodilator for low afterload is not correct. Vasodilators decrease afterload by causing the blood vessels to widen, reducing the resistance the heart has to pump against. Administering a vasodilator to treat low afterload is inappropriate because it would further lower afterload, potentially leading to inadequate perfusion and worsening cardiac output.
Choice C reason: Administering diuretics for low right atrial (RA) pressure is inappropriate. Diuretics help to remove excess fluid from the body, reducing blood volume and venous pressure. However, if a patient has low right atrial pressure, reducing blood volume further with diuretics could exacerbate the issue, leading to decreased cardiac output and poor perfusion.
Choice D reason: Administering a fluid bolus is the correct intervention for low preload. Preload refers to the volume of blood in the ventricles at the end of diastole. If preload is low, administering fluids increases blood volume, which enhances ventricular filling and improves cardiac output. This intervention helps to stabilize hemodynamics and improve overall perfusion.
Choice E reason: Administering a diuretic or vasodilator is the appropriate intervention for high preload. High preload indicates an excess of blood volume returning to the heart, which can strain the cardiac muscle and reduce efficiency. Diuretics help remove excess fluid, while vasodilators decrease venous return and reduce the volume of blood the heart has to handle, thus optimizing cardiac function and output.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Aspirin does have analgesic properties, which help relieve pain. However, this is not the primary reason for its administration in the context of angina-like chest pain. The analgesic effect of aspirin without sedation is more relevant in the management of general pain or headaches.
Choice B reason: Vasoconstriction and improved blood flow are not effects of aspirin. In fact, aspirin's mechanism of action involves preventing platelet aggregation, which can indirectly improve blood flow by reducing the risk of clot formation. Vasoconstriction is not an effect associated with aspirin.
Choice C reason: The primary rationale for administering aspirin to a client with angina-like chest pain is its antiplatelet effect. Aspirin inhibits platelet aggregation, reducing the risk of clot formation. This is crucial in preventing further blockage of coronary arteries, which can exacerbate angina or lead to myocardial infarction.
Choice D reason: Cardiotonic properties and improved contraction are not associated with aspirin. Cardiotonic drugs enhance the strength of the heart's contractions, which is not an action of aspirin. Aspirin's role in this context is to prevent platelet aggregation and reduce the risk of clot-related complications.
Correct Answer is D
Explanation
Choice A reason: The statement "Headaches can occur due to the vasoconstriction effect of the medication" is incorrect. Nitroglycerin causes vasodilation, not vasoconstriction. Vasodilation increases blood flow, which can lead to headaches as a common side effect.
Choice B reason: Offering Morphine to manage the headache is not the most appropriate initial response. While Morphine can relieve pain, it's essential to educate the patient about the common side effects of Nitroglycerin and provide reassurance. Morphine use should be carefully considered and is typically reserved for more severe pain management.
Choice C reason: Notifying the physician immediately is not necessary in this scenario, as a headache is a known and common side effect of Nitroglycerin. It's more appropriate to educate the patient about the side effects and provide reassurance. Only if the headache is severe and unrelieved by other measures should the physician be notified.
Choice D reason: Explaining that the headache is a normal side effect of Nitroglycerin, which dilates blood vessels, is the most appropriate response. This helps to reassure the patient and provides an understanding of why the headache is occurring. Nitroglycerin works by dilating blood vessels to improve blood flow and reduce angina symptoms, and headaches are a common side effect due to this vasodilation.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.
