ATI RN
Adult Health Nursing Study Guide Answers Questions
Question 1 of 5
Which of the following statements accurately describes the role of natural killer (NK) cells in the immune response?
Correct Answer: A
Rationale: Natural killer (NK) cells play a vital role in the innate immune response by identifying and eliminating virus-infected cells, as well as tumor cells, without the need for prior exposure or activation. NK cells are able to detect abnormal cells by recognizing changes in the cell surface molecules, such as downregulation of MHC class I molecules. Once activated, NK cells release cytotoxic granules containing perforin and granzyme, leading to the destruction of the target cell. This direct killing mechanism is crucial for controlling viral infections and preventing the development of tumors. NK cells do not produce antibodies (option B), present antigens to T cells (option C), or release cytokines to recruit other immune cells (option D) as their primary function in the immune response.
Question 2 of 5
A patient with chronic obstructive pulmonary disease (COPD) presents with increased dyspnea, wheezing, and productive cough. Which of the following medications is most appropriate for bronchodilation and symptom relief in this patient?
Correct Answer: A
Rationale: Albuterol (salbutamol) is a short-acting beta agonist bronchodilator commonly used for quick relief of bronchoconstriction in patients with COPD. It works by relaxing the smooth muscles in the airways, allowing for easier breathing and improved airflow. The patient's increased dyspnea, wheezing, and productive cough are indicative of bronchoconstriction, and albuterol is the most appropriate medication to provide rapid bronchodilation and symptom relief in this situation. Diphenhydramine (Benadryl) is an antihistamine and not typically used for bronchodilation in COPD. Montelukast (Singulair) is a leukotriene receptor antagonist that may be used in the maintenance treatment of COPD but is not the initial choice for acute symptom relief. Prednisone is a cortic
Question 3 of 5
Which of the following conditions is characterized by chronic hypoxemia, pulmonary hypertension, and right heart failure?
Correct Answer: D
Rationale: Cor pulmonale is a condition characterized by right heart failure secondary to pulmonary hypertension, which is often caused by chronic hypoxemia. Chronic hypoxemia occurs in conditions such as chronic obstructive pulmonary disease (COPD) where there is limited airflow in and out of the lungs, leading to low oxygen levels in the blood. However, the specific characteristic of pulmonary hypertension leading to right heart failure distinguishes cor pulmonale from COPD. Other conditions like idiopathic pulmonary fibrosis (IPF) and pulmonary embolism (PE) may also lead to hypoxemia but are not primarily associated with pulmonary hypertension and right heart failure as in cor pulmonale.
Question 4 of 5
A patient with suspected acute exacerbation of asthma presents with severe dyspnea, accessory muscle use, and inability to speak in full sentences. Which of the following interventions is most appropriate for assessing the severity of the patient's asthma exacerbation and guiding management decisions?
Correct Answer: D
Rationale: In the scenario described, the patient is presenting with severe symptoms of acute exacerbation of asthma, including severe dyspnea, accessory muscle use, and inability to speak in full sentences. In such cases, the most appropriate intervention for assessing the severity of the asthma exacerbation and guiding management decisions is a clinical assessment using standardized severity scores.
Question 5 of 5
A patient presents with fatigue, weakness, and jaundice. Laboratory tests reveal elevated indirect bilirubin levels, reticulocytosis, and positive Coombs test. Which of the following conditions is most likely to cause these findings?
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.