Correct Answer: A

Rationale: The presentation of chest pain, dyspnea, hypotension, right ventricular dilation, and hypokinesis on echocardiogram is highly suggestive of a pulmonary embolism. In pulmonary embolism, a blood clot obstructs the pulmonary artery or one of its branches, leading to increased pressure in the right ventricle, which can cause right ventricular dilation and dysfunction. This results in the classic signs of right heart strain on echocardiogram. The patient may also present with symptoms of acute right heart failure, such as chest pain, dyspnea, and signs of hypotension. It is crucial to consider pulmonary embolism as a potential cause of these symptoms, given the high morbidity and mortality associated with this condition.

Correct Answer: A

Rationale: Somatic hypermutation is the mechanism responsible for generating diversity in the antigen-binding sites of immunoglobulins. During somatic hypermutation, point mutations are introduced into the variable regions of immunoglobulin genes in B cells. These mutations occur randomly and lead to a wide range of amino acid changes in the antigen-binding sites of antibodies. As a result, a diverse repertoire of antibodies with varying specificities for different antigens is created. Gene rearrangement and isotype switching are other mechanisms that contribute to antibody diversity but do not specifically target the antigen-binding sites. Clonal expansion, on the other hand, refers to the proliferation of specific B cell clones after activation by antigens, which amplifies the immune response but does not directly impact the diversity of antigen-binding sites.

Correct Answer: D

Rationale: Using colored pictures can help make the presentation of the plan more visually engaging and easier to understand for the audience, in this case, the nurse's intended audience. Visual aids, such as colored pictures, can effectively convey complex information in a simplified and easy-to-digest manner. This approach can enhance comprehension and retention of the presented material, making the implementation of the plan more accessible and clear to the individuals involved.

Correct Answer: B

Rationale: Marlene opening up to the nurse about their financial difficulty indicates that she feels comfortable enough to share personal information with the nurse. This signals the establishment of a trusting relationship between Marlene and the nurse, as Marlene feels safe and supported enough to disclose sensitive information. Building trust is a crucial aspect of any professional relationship, especially in healthcare settings, as it fosters open communication, encourages honesty, and ultimately leads to better outcomes for the patient. It is an essential foundation for providing effective care and support to individuals in need.

Correct Answer: A

Rationale: Illiterate clients may have difficulty understanding spoken or written information. Using symbols and images can help convey important messages and instructions in a visual way that can be easily understood without relying on literacy skills. This communication intervention is effective in ensuring that the client understands the information being provided, promoting better adherence to treatment plans and overall health outcomes.