NR 507 MIDTERM WEEK 4 EXAM .QUESTIONS AND ANSWERS. LATEST 2020

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NR 507 MIDTERM WEEK 4 EXAM .QUESTIONS AND ANSWERS. LATEST 2020. 1. Question : What is the final stage of the infectious process? Student Answer: Colonization Invasion Multipl... ication Spread Instructor Explanation: From the perspective of the microorganisms that cause disease, the infectious process undergoes four separate stages of progression: (1) colonization, (2) invasion, (3) multiplication, and (4) spread. Points Received: 2 of 2 Comments: Question 2. Question : Where in the respiratory tract do the majority of foreign objects aspirated by children finally lodge? Student Answer: Trachea Left lung Bronchus Bronchioles Instructor Explanation: Approximately 75% of aspirated foreign bodies lodge in a bronchus. The other options are not locations where children aspirate the majority of foreign objects. Points Received: 0 of 2 Comments: Question 3. Question : What is the primary cause of respiratory distress syndrome (RDS) of the newborn? Student Answer: Immature immune system Small alveoli Surfactant deficiency Anemia Instructor Explanation: RDS is primarily caused by surfactant deficiency and secondarily by a deficiency in alveolar surface area for gas exchange. None of the other options are related to the cause of RDS. Points Received: 2 of 2 Comments: Question 4. Question : Which statement concerning benign tumors is true? Student Answer: The resulting pain is severe. Benign tumors are not encapsulated. Benign tumors are fast growing. The cells are well-differentiated. Instructor Explanation: A benign tumor is well-differentiated with its tissue appearing similar to the tissue from which it arose. The other options are characteristic of a malignant tumor. Points Received: 2 of 2 Comments: Question 5. Question : Which compensatory mechanism is spontaneously used by children diagnosed with tetralogy of Fallot to relieve hypoxic spells? Student Answer: Lying on their left side Performing the Valsalva maneuver Squatting Hyperventilating Instructor Explanation: Squatting is a spontaneous compensatory mechanism used by older children to alleviate hypoxic spells. Squatting and its variants increase systemic resistance while decreasing venous return to the heart from the inferior vena cava. The other options would not result in these changes. Points Received: 2 of 2 Comments: Question 6. Question : Which cytokines initiate the production of corticotropin-releasing hormone (CRH)? Student Answer: IL–1 and IL-6 IL-2 and TNF- IFN and IL-12 TNF-ß and IL-4 Instructor Explanation: Although a number of stress factors initiate the production of CRH, of the options available, only high levels of IL-1 and IL-6 initiate such a response. Points Received: 2 of 2 Comments: Question 7. Question : Hemolytic disease of the newborn (HDN) can occur if the mother: Student Answer: Is Rh-positive and the fetus is Rh-negative Is Rh-negative and the fetus is Rh-positive Has type A blood and the fetus has type O Has type AB blood and the fetus has type B Instructor Explanation: HDN can occur only if antigens on fetal erythrocytes differ from antigens on maternal erythrocytes. Maternal-fetal incompatibility exists only if the mother and fetus differ in ABO blood type or if the fetus is Rh-positive and the mother is Rh-negative. This erythrocyte incompatibility does not exist in any of the other options. [Show More]

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