A nurse in a provider's office is assessing a client who reports dyspnea and fatigue. Physical assessment reveals tachycardia and weak peripheral pulses. The nurse should recognize these findings as manifestations of which of the following conditions?

Cytotoxic hypersensitivity is a type of hypersensitivity that involves the production of IgG or IgM antibodies that bind to antigens on the surface of cells, leading to cell destruction by complement activation or antibody-dependent cellular cytotoxicity. Myasthenia gravis is an example of a cytotoxic hypersensitivity, as it is caused by autoantibodies that target the acetylcholine receptors on the muscle cells, impairing neuromuscular transmission and causing muscle weakness.

Delayed hypersensitivity is a type of hypersensitivity that involves the activation of T cells and macrophages, leading to inflammation and tissue damage after several hours or days of exposure to an antigen. Examples of delayed hypersensitivity include contact dermatitis, tuberculin skin test, and transplant rejection.

Immediate hypersensitivity is a type of hypersensitivity that involves the production of IgE antibodies that bind to mast cells or basophils, leading to degranulation and release of histamine and other mediators, causing anaphylaxis, urticaria, or allergic rhinitis within minutes of exposure to an antigen.

Immune complex-mediated hypersensitivity is a type of hypersensitivity that involves the formation of antigen- antibody complexes that deposit in tissues or blood vessels, leading to complement activation and inflammation, causing vasculitis, glomerulonephritis, or serum sickness within hours or days of exposure to an antigen.

1. Place a pillow under the client's head.

The nurse should place a pillow under the client's head to protect it from injury during the seizure. The nurse should also loosen any tight clothing, remove any objects that could harm the client, and maintain a patent airway.

1. Gently restrain the client's extremities is wrong because it can cause injury to the client or the nurse. The nurse should not restrain or interfere with the client's movements during the seizure, but rather ensure a safe environment and observe the seizure activity.
2. Apply a face mask for oxygen administration is wrong because it can be dislodged by the client's movements and pose a choking hazard. The nurse should not atempt to insert anything into the client's mouth or nose during the seizure, but rather provide oxygen by nasal cannula after the seizure if needed.

Insert a padded tongue blade into the client's mouth is wrong because it can damage the client's teeth, gums, or tongue, or cause aspiration or airway obstruction. The nurse should not atempt to insert anything into the client's mouth or nose during the seizure, but rather turn the client to a side-lying position after the