Which immunoglobulin is specific to an allergic response?

Correct Answer: B

Rationale: The correct answer is B: IgE. IgE is specific to allergic responses as it binds to mast cells and basophils, triggering the release of histamine and other inflammatory mediators. IgA is more involved in mucosal immunity, IgG is involved in long-term immunity and opsonization, and IgM is the primary antibody in the primary immune response. IgB is not a known immunoglobulin. Therefore, IgE is the specific immunoglobulin associated with allergic responses due to its role in mediating hypersensitivity reactions.

Correct Answer: D

Rationale: The correct answer is D: Pain related to sickle cell crisis. In a sickle cell crisis, the client experiences severe pain due to the sickling of red blood cells, which causes blockages in blood vessels. This pain is the hallmark symptom of sickle cell crisis and is a priority nursing diagnosis. The other choices are incorrect because they do not directly relate to the primary issue of sickle cell crisis. Imbalanced nutrition is not typically a priority during a crisis, disturbed sleep pattern is not a common symptom, and impaired skin integrity is not a prominent concern in sickle cell crisis.

Correct Answer: C

Rationale: The correct answer is C: Ineffective cerebral tissue perfusion. In the late stage of AIDS, the client is at risk for neurological complications, including AIDS-related dementia due to decreased blood flow to the brain. This nursing diagnosis takes the highest priority as it directly addresses the client's impaired brain perfusion, which can lead to serious cognitive and functional deficits. Prioritizing this diagnosis ensures timely interventions to optimize cerebral blood flow and prevent further deterioration. Summary: A: Self-care deficient: Bathing/hygiene - important but not the highest priority compared to addressing neurological complications. B: Dysfunctional grieving - while emotional support is essential, it is not the priority when dealing with a life-threatening physiological issue. D: Risk for injury - while important, it is secondary to addressing the underlying cause of the dementia in this scenario.

Correct Answer: B

Rationale: The correct answer is B: Pneumonia Carnii. Pulmonary complications in AIDS patients are commonly caused by Pneumocystis jirovecii (previously known as Pneumocystis carinii) pneumonia. This opportunistic infection targets the lungs of immunocompromised individuals, leading to severe respiratory issues. Kaposi's Sarcoma (A) is a cancer commonly seen in AIDS patients but does not directly cause pulmonary complications. Filterable Virus (C) is a vague term and not a known cause of pulmonary issues in AIDS patients. Staphylococcus bacteria (D) can cause infections in AIDS patients but is less common than Pneumocystis jirovecii pneumonia in causing pulmonary complications.

Correct Answer: C

Rationale: The correct answer is C because compatibility between blood donor and recipient is determined by the absence of clumping or hemolysis when both samples are mixed. Clumping indicates an incompatible blood type reaction, leading to potential harm. Blood clots (option B) are not indicative of compatibility but rather a sign of coagulation issues. Blood color change (option A) and blood drop sinking in water (option D) are not reliable indicators of blood compatibility. In summary, option C is correct as it directly assesses for the absence of a harmful reaction, while the other choices do not accurately determine blood compatibility.