A client with acute heart failure is receiving dobutamine. What is the desired effect of this drug in a patient with heart failure?
Decreased cardiac arrhythmias.
Increased myocardial contractility.
Decreased electrical conductivity in the heart.
Dilated coronary arteries.
The Correct Answer is B
Choice A reason: Decreased cardiac arrhythmias are not the primary desired effect of dobutamine in heart failure patients. While dobutamine can have some effects on heart rhythm, its main action is to increase the strength of the heart's contractions.
Choice B reason: Increased myocardial contractility is the correct and desired effect of dobutamine. Dobutamine is a positive inotropic agent, meaning it increases the force of the heart's contractions. This is particularly beneficial in heart failure patients as it helps improve cardiac output and the effectiveness of the heart as a pump, thus alleviating symptoms of heart failure and improving organ perfusion.
Choice C reason: Decreased electrical conductivity in the heart is not an effect of dobutamine. In fact, dobutamine can increase the risk of arrhythmias due to its stimulating effects on the heart. The drug works by enhancing the contractility of the heart muscle rather than altering the electrical conduction system.
Choice D reason: Dilated coronary arteries are not a primary effect of dobutamine. While the drug may have some vasodilatory properties, especially at higher doses, its primary role is to enhance myocardial contractility rather than directly dilate the coronary arteries.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Neurogenic shock is a type of distributive shock that occurs due to a sudden loss of sympathetic nervous system signals to the smooth muscle in vessel walls. It is not a direct complication of septic shock, which is primarily caused by severe infection and systemic inflammation. While both are forms of shock, the mechanisms and causes are different.
Choice B reason: Febrile seizures are typically seen in children with high fevers and are not a common complication of septic shock in adults. Septic shock involves severe infection and systemic inflammatory response, leading to complications such as organ failure rather than febrile seizures.
Choice C reason: Esophageal varices are enlarged veins in the esophagus that can bleed, often seen in patients with liver disease and portal hypertension. They are not a complication of septic shock. While severe infection and systemic inflammation can lead to various complications, esophageal varices are specifically related to liver pathology.
Choice D reason: Acute Respiratory Distress Syndrome (ARDS) is a severe complication that the nurse should remain alert for in patients with septic shock. ARDS is characterized by rapid onset of widespread inflammation in the lungs, leading to respiratory failure. It is a common and serious complication of septic shock due to the systemic inflammatory response affecting the lung tissue. Early recognition and management are crucial for improving patient outcomes.
Correct Answer is ["A","C","D","E"]
Explanation
Choice A reason: Providing at least 5000 kcal/day is essential for a patient with burn injuries. Burns significantly increase the body's metabolic rate and caloric needs to support the healing process and prevent catabolism. Ensuring an adequate caloric intake helps meet the energy demands required for tissue repair and recovery.
Choice B reason: Starting an oral diet on the first day may not be appropriate for all burn patients, particularly those with extensive burns or those who are not yet stable. Nutrition needs should be carefully assessed, and feeding may begin via alternative methods such as enteral nutrition until the patient is ready for oral intake.
Choice C reason: Administering a diet high in protein is crucial for burn patients, as protein is essential for wound healing, maintaining lean body mass, and supporting the immune system. Protein intake should be increased to help repair damaged tissues and promote recovery.
Choice D reason: Collaborating with a registered dietitian is important to create an individualized nutrition plan that meets the specific needs of the burn patient. A dietitian can provide expertise in calculating caloric and protein requirements, recommending appropriate supplements, and monitoring the patient's nutritional status.
Choice E reason: Offering frequent high-calorie snacks helps ensure that the patient meets their increased caloric needs. Small, frequent meals and snacks can be more manageable for patients with reduced appetite or those who have difficulty consuming large meals. High-calorie snacks provide additional energy to support healing and recovery.
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