Week 3 Common Infections of the Respiratory Tract Pertussis PDF

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Question 1 of 3 The nurse is administering the DTaP vaccine to a 4-month-old infant. The parents question the nurse about the importance of this vaccination. Which response by the nurse is appropriate? “DTaP will prevent pertussis after one dose.” “DTaP protects against pertussis-associated seizures.” “DTaP prevents 1% of infant deaths related to pertussis.” “DTaP can prevent pertussis and associated complications.”

Exactly! “DTaP will prevent pertussis after one dose.” Because DTaP requires multiple injections to build immunity this is not appropriate response by the nurse when asked about the DTaP vaccine. This child will need more than one dose. “DTaP protects against pertussis-associated seizures.” Because seizures are not a known complication of pertussis, this is not the appropriate response by the nurse when asked about the DTaP vaccine. “DTaP prevents 1% of infant deaths related to pertussis.” Because DTaP prevents more than 1% of infant deaths related to pertussis, this is not appropriate response by the nurse when asked about the DTaP vaccine. “DTaP can prevent pertussis and associated complications.” Because the most frequent complication of pertussis is pneumonia and DTaP can prevent pertussis, this is the most appropriate response by the nurse when asked about the DTaP vaccine.

Question 2 of 3 Bordatella pertussusis have pili that surround their thin cell wall. Why is this significant for understanding the pathophysiology of the disease?

Pili make phagocytosis of the bacteria by the host cells more difficult. Pili propel the bacteria through the host’s body by excreting exotoxins. Pili help the bacteria survive and adhere to the mucosa of the respiratory tract. Pili hide the bacteria’s presence in the host so the immune system cannot respond.

Exactly! Pili make phagocytosis of the bacteria by the host cells more difficult. Capsules, not pili, make phagocytosis of the bacteria by the host cells more difficult, which is significant for understanding the pathophysiology of pertussis. Pili propel the bacteria through the host’s body by excreting exotoxins. Flagella, not pili, propel the bacteria through the host’s body by excreting exotoxins, which is significant for understanding the pathophysiology of pertussis. Pili help the bacteria survive and adhere to the mucosa of the respiratory tract. Pili are rigid projections help the bacteria survive and adhere to the mucosa of the respiratory tract, which is significant for understanding the pathophysiology of pertussis. Pili hide the bacteria’s presence in the host so the immune system cannot respond. Capsules, not pili, hide the bacteria’s presence in the host so the immune system cannot respond, which is significant for understanding the pathophysiology of pertussis.

Question 3 of 3 Why might a patient who tests positive for Bordetella Pertussis also present with an unusually low blood pressure? Pertussis releases endotoxins. Pertussis causes a high fever. Pertussis can bind to the mitral value affect cardiac output.

Pertussis has a thick cell wall which can affect the cardiovascular system.

Exactly! Pertussis releases endotoxins. Pertussis is a gram negative bacteria that can release endotoxins and cause symptoms of shock, including low blood pressure. Pertussis causes a high fever. Although pertussis can cause a high fever, this would not explain why a patient with pertussis would have low blood pressure. Pertussis can bind to the mitral value affect cardiac output. Although pertussis can lead to pneumonia, this would not explain why a patient with pertussis would have low blood pressure. Pertussis has a thick cell wall which can affect the cardiovascular system. Pertussis has a thin cell wall, not a thick cell wall, and this does not explain why a patient with pertussis would have low blood pressure....