A patient is prescribed an angiotensin-converting enzyme (ACE) inhibitor for heart failure. Which laboratory parameter should the nurse monitor closely during ACE inhibitor therapy?

Correct Answer: A

Rationale: The nurse should monitor serum potassium levels closely during ACE inhibitor therapy because ACE inhibitors can lead to an increase in serum potassium levels, known as hyperkalemia. ACE inhibitors block the conversion of angiotensin I to angiotensin II, which in turn decreases aldosterone secretion. Aldosterone normally acts in the kidneys to reabsorb sodium and water and excrete potassium. Therefore, when aldosterone secretion is decreased due to ACE inhibitor therapy, there can be an increase in potassium retention, potentially leading to hyperkalemia. Monitoring serum potassium levels is essential to prevent complications associated with hyperkalemia, such as cardiac arrhythmias.

Correct Answer: D

Rationale: The Patient's Bill of Rights typically focuses on ensuring patients have the right to certain aspects of their healthcare, such as the right to refuse treatment, the right to informed consent, and the right to receive treatment. Civil commitment, on the other hand, refers to the legal process through which an individual is involuntarily placed in a psychiatric facility for evaluation and treatment. This issue is not typically addressed in the Patient's Bill of Rights, as it involves specific legal procedures rather than general patient rights.

Correct Answer: D

Rationale: The appropriate nursing diagnosis for this situation is "Ineffective coping" because the patients with hypertension who stop taking their medications despite feeling good may be using this behavior as a maladaptive coping mechanism. It suggests that they might not fully understand the importance of medication adherence or are struggling to accept their diagnosis. By not adhering to their prescribed treatment, they are putting themselves at risk for complications associated with uncontrolled hypertension. Therefore, the nursing diagnosis of "Ineffective coping" addresses the patients' inability to deal with their condition in a healthy manner, leading to noncompliance with their treatment regimen.

Correct Answer: B

Rationale: An abdominal ultrasound is the imaging test that uses a transducer and is most commonly ordered by physicians to detect gallstones. This non-invasive procedure allows the physician to visualize the gallbladder and detect any presence of gallstones. The transducer emits sound waves that bounce off the gallstones, creating images that can be seen on a screen. This imaging test is safe, reliable, and effective in diagnosing gallstones without the use of radiation or contrast dye.

Correct Answer: B

Rationale: The presentation of knee pain and swelling following a fall onto a flexed knee, along with a palpable effusion and tenderness along the joint line, is highly suggestive of a meniscus injury. The McMurray's test specifically evaluates for meniscal tears. In this case, the presence of pain and clicking with passive knee flexion and internal rotation indicates a medial meniscus tear as the most likely diagnosis. Patellar tendinitis usually presents with anterior knee pain that is worsened by activities such as jumping or running. Lateral collateral ligament (LCL) sprain typically presents with lateral knee pain and instability. Quadriceps tendon rupture would present with significant weakness and inability to fully extend the knee, which is not described in this scenario.

Correct Answer: C

Rationale: Mrs. Juan's therapeutic treatment should focus on redirecting her energy into activities that involve helping others. By engaging in altruistic activities, Mrs. Juan can shift her focus away from her fears and anxieties towards something positive and fulfilling. This approach can help her to find purpose and meaning outside of her own concerns, fostering a sense of well-being and satisfaction. Additionally, helping others can provide Mrs. Juan with a sense of accomplishment and self-worth, ultimately contributing to her overall mental health and emotional resilience.

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: B

Rationale: The constellation of severe lower abdominal pain, fever, and vaginal discharge in a pregnant woman raises suspicion for pelvic inflammatory disease (PID). Cervical motion tenderness and adnexal tenderness are classic physical exam findings for PID. The presence of bilateral adnexal masses further supports the diagnosis, as PID can lead to the formation of tubo-ovarian abscesses. Ectopic pregnancy may present with similar symptoms but is less likely in this case as bilateral adnexal masses suggest a more diffuse inflammatory process. Placenta previa would typically present with painless vaginal bleeding in the third trimester, which is not consistent with the symptoms described. Ovarian torsion would present with sudden severe unilateral lower abdominal pain and is less likely to involve both ovaries simultaneously.

Correct Answer: D

Rationale: An advance directive is a legal document that specifies a person's healthcare preferences and instructions for medical treatment in the event they are unable to communicate their wishes. It typically includes decisions about life-sustaining treatments, resuscitation, and end-of-life care. In the scenario provided, the document provided by the patient to the nurse outlining his healthcare team's instructions postoperatively indicates that he has an advance directive in place to guide his medical care if necessary. In contrast, informed consent is a process in which a patient gives permission for medical treatment after being informed about the risks, benefits, and alternatives. Patient's Bill of Rights outlines the patient's rights within the healthcare system, and an insurance card provides information about the patient's insurance coverage.