Which immunoglobulin provides the most protection against Infection in a client, as it is the most abundant?
IgG
IgE
IgM
IgA
The Correct Answer is A
A. IgG: Immunoglobulin G (IgG) is the most abundant antibody in the bloodstream and represents about 75% of all the antibodies in the body. It provides long-term immunity because it can persist in the bloodstream for a long time. IgG antibodies are involved in secondary immune responses and are capable of crossing the placenta, providing passive immunity to newborns.
B. IgE: Immunoglobulin E (IgE) is associated mainly with allergic reactions. When the body is exposed to an allergen, it triggers the release of IgE, leading to the symptoms of an allergic response, such as sneezing or itching.
C. IgM: Immunoglobulin M (IgM) is the largest antibody and is usually the first antibody produced during an initial exposure to an antigen. It is particularly effective at agglutination (clumping together) of pathogens.
D. IgA: Immunoglobulin A (IgA) is found in high concentrations in mucous membranes, particularly those lining the respiratory passages and gastrointestinal tract. It provides localized defense against pathogens. IgA antibodies are also found in saliva, tears, and breast milk, providing immunity to infants.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Aminoglycosides: Aminoglycosides are a different class of antibiotics. They do not have cross-sensitivity with penicillin. People who are allergic to penicillin can usually take aminoglycosides without a problem.
B. Erythromycins: Erythromycins are macrolide antibiotics. They are not related to penicillin structurally, so there is no cross-sensitivity between penicillin and erythromycins. People allergic to penicillin can generally take erythromycin without issues.
C. Quinolones: Quinolones, also known as fluoroquinolones, are a different class of antibiotics. They do not share a structural similarity with penicillin, so there is usually no cross-sensitivity between penicillin and quinolones. People allergic to penicillin can usually take quinolones without problems.
D. Cephalosporins: Cephalosporins are beta-lactam antibiotics, just like penicillins. They have a similar chemical structure to penicillins, which can lead to cross-sensitivity. Individuals who are allergic to penicillin might also have an allergic reaction to cephalosporins due to this structural resemblance. However, it's important to note that not all cephalosporins are the same, and the risk of cross-reactivity varies among different generations of cephalosporins. Healthcare providers need to assess the specific situation and choose an appropriate antibiotic if there is a known penicillin allergy.
Correct Answer is B
Explanation
A. "You have developed urticaria in response to something in your environment."
This statement is incorrect. Urticaria refers to hives, a skin rash usually caused by an allergic reaction, infection, or stress. It's not necessarily indicative of an autoimmune disease.
B. "Your immune system is creating antibodies that are destroying your own cells."
This statement is correct. Autoimmune diseases involve the immune system mistakenly attacking the body's own cells and tissues, leading to various health issues.
C. "Your immune system is not able to create antibodies to help you fight infection."
This statement is incorrect. In autoimmune diseases, the immune system is overactive, producing antibodies that target the body's own cells, not that it can't create antibodies.
D. "You have developed an infection that is destroying your immune cells."
This statement is incorrect. Infections don't typically destroy immune cells; instead, infections often stimulate the immune system to respond and fight against invading pathogens.
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