The nurse is reviewing her hospitalized client's medications and sees that he is on both a cephalosporin and an aminoglycoside. The nurse knows that this combination of antibiotics increases the client's risk for:

A. Bactericidal and bacteriostatic are used interchangeably.
This statement is incorrect. Bactericidal and bacteriostatic have distinct meanings in pharmacology and microbiology. Bactericidal means the drug kills bacteria, whereas bacteriostatic means the drug inhibits the growth of bacteria without killing them.

B. Bactericidal drugs are directly lethal to bacteria, and bacteriostatic drugs work to slow bacterial growth but do not cause cell death.
This statement is correct. Bactericidal drugs directly kill bacteria, leading to their death. Bacteriostatic drugs inhibit the growth of bacteria without causing their immediate death. Both types of drugs play different roles in the treatment of bacterial infections.

C. Bacteriostatic drugs are directly lethal to bacteria, and bactericidal drugs work to slow bacterial growth but do not cause cell death.
This statement is incorrect. It confuses the roles of bactericidal and bacteriostatic drugs. Bactericidal drugs directly kill bacteria, while bacteriostatic drugs inhibit bacterial growth without immediate cell death.

D. A bactericidal drug can cause death to the host, whereas a bacteriostatic drug only affects bacteria.
This statement is incorrect. Both bactericidal and bacteriostatic drugs primarily affect bacteria, not the host. The difference lies in how they affect bacteria: bactericidal drugs kill bacteria directly, and bacteriostatic drugs inhibit their growth.

A. IgD: Immunoglobulin D (IgD) is found on the surface of B cells and serves as a receptor for antigen recognition during the immune response. Its exact function is not fully understood, but it plays a role in the activation of B cells.

B. IgE: Immunoglobulin E (IgE) is primarily associated with allergic responses and defense against parasitic infections. When an allergen enters the body, IgE antibodies trigger the release of histamine and other chemicals, leading to allergy symptoms. IgE is also involved in protecting against certain parasites.

C. IgG: Immunoglobulin G (IgG) is the most abundant immunoglobulin in the bloodstream. It provides long-term immunity by recognizing and neutralizing pathogens such as bacteria and viruses. IgG antibodies are involved in secondary immune responses and are transferred from mother to fetus, providing passive immunity.

D. IgM: Immunoglobulin M (IgM) is the first antibody produced during an initial immune response to an antigen. It is effective at agglutination (clumping) of pathogens. IgM antibodies are generally found in blood and lymph fluid and are the first line of defense during infections.