A nurse and a newly licensed nurse are providing care for a client who has distributive shock. How should the nurse explain the pathophysiology of distributive shock to the newly licensed nurse?
"Distributive shock occurs due to increased systemic vascular resistance."
"Distributive shock occurs due to systemic vasodilation."
"Distributive shock occurs due to loss of myocardial contractility."
"Distributive shock occurs due to loss of blood volume."
The Correct Answer is B
A. Increased systemic vascular resistance is typically associated with hypovolemic or cardiogenic shock, not distributive shock.
B. Distributive shock is characterized by systemic vasodilation, which leads to a decrease in systemic vascular resistance and results in inadequate tissue perfusion despite normal or increased cardiac output.
C. Loss of myocardial contractility is related to cardiogenic shock, not distributive shock.
D. Loss of blood volume is a characteristic of hypovolemic shock, whereas distributive shock occurs even when blood volume is normal due to vasodilation.
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Correct Answer is D
Explanation
A. The conversion of RNA into DNA is a critical step in the HIV lifecycle, but it does not directly lead to opportunistic infections; instead, it allows the virus to integrate into the host’s genome.
B. Having reverse transcriptase enzyme is a characteristic of retroviruses like HIV that facilitates replication, but it does not cause opportunistic infections directly.
C. HIV containing a single strand of genetic material is a feature of its classification as a retrovirus but is not related to the risk of opportunistic infections.
D. The ability of HIV to target and destroy CD4 lymphocytes is the key reason for opportunistic infections. CD4 cells are crucial for the immune response, and their depletion leads to immunosuppression, making the client susceptible to infections that would not typically affect an individual with a healthy immune system.
Correct Answer is B
Explanation
A. Hepatitis is a concern for individuals with HIV, but it is not specifically indicated by a low CD4-T-cell count.
B. A CD4-T-cell count of 150/mm³ indicates severe immunosuppression, making the client highly susceptible to opportunistic infections like tuberculosis, which is common in individuals with HIV.
C. While gonorrhea is a risk for sexually active individuals, it is not specifically related to the low CD4-T-cell count.
D. Chlamydia is also a sexually transmitted infection, but similar to gonorrhea, it is not directly linked to the immunocompromised state indicated by the CD4-T-cell count.