A patient presents with chest pain that occurs during emotional stress and resolves spontaneously. An electrocardiogram (ECG) may show transient ST-segment elevation. Which cardiovascular disorder is most likely responsible for these symptoms?

Correct Answer: D

Rationale: Takotsubo cardiomyopathy, also known as stress-induced cardiomyopathy or broken heart syndrome, presents with symptoms similar to acute coronary syndrome, such as chest pain and ECG changes. In Takotsubo cardiomyopathy, chest pain typically occurs during emotional stress and resolves spontaneously, similar to the scenario described in the question. The ECG may show transient ST-segment elevation. This condition is characterized by a reversible left ventricular dysfunction that can mimic a myocardial infarction. Unlike stable angina (Choice A) and unstable angina (Choice B), Takotsubo cardiomyopathy is not related to coronary artery disease. Acute myocardial infarction (Choice C) typically presents with persistent ST-segment elevation on ECG and is caused by atherosclerotic plaque rupture leading to myocardial infarction, which is not consistent with the transient ST-segment elevation seen in

Correct Answer: A

Rationale: Having a tracheostomy means that a patient has an artificial opening in their neck to help them breathe. Therefore, any issues related to breathing, such as blockages in the tracheostomy tube or difficulty in clearing secretions, can pose a major problem for a patient with a tracheostomy. It is crucial to monitor the patient's respiratory status closely and intervene promptly if any breathing difficulties arise to prevent potential respiratory distress or complications.

Correct Answer: A

Rationale: Osteoporosis is known as a "silent disease" because it develops slowly over time without any symptoms. Many people with osteoporosis are unaware of their condition until they experience a fracture. The loss of bone density and strength in osteoporosis occurs without any obvious warning signs, making it important for individuals at risk to undergo bone density testing to identify the condition early and prevent further bone loss.

Correct Answer: A

Rationale: Natural killer (NK) cells play a vital role in the innate immune response by identifying and eliminating virus-infected cells, as well as tumor cells, without the need for prior exposure or activation. NK cells are able to detect abnormal cells by recognizing changes in the cell surface molecules, such as downregulation of MHC class I molecules. Once activated, NK cells release cytotoxic granules containing perforin and granzyme, leading to the destruction of the target cell. This direct killing mechanism is crucial for controlling viral infections and preventing the development of tumors. NK cells do not produce antibodies (option B), present antigens to T cells (option C), or release cytokines to recruit other immune cells (option D) as their primary function in the immune response.

Correct Answer: A

Rationale: Bulimia nervosa is an eating disorder characterized by binge eating followed by compensatory behaviors such as self-induced vomiting, fasting, or excessive exercise. The repeated purging in bulimia can lead to electrolyte imbalances, such as hypokalemia (low potassium levels). Hypokalemia is a serious condition that can affect the function of the heart's electrical system, potentially leading to the development of cardiac arrhythmias (irregular heartbeats) and even cardiac arrest, which can result in death. Therefore, in a bulimic patient like Sherry, the risk of death is most likely due to the combination of hypokalemia and its complications, such as cardiac arrhythmias and arrest.

Correct Answer: A

Rationale: In collecting a sputum specimen, the nurse should instruct Roy to breathe slowly, cough, and then expectorate into the specimen container. This ensures that the sputum sample is collected from the lower respiratory tract where it is most likely to contain pathogens or other relevant substances for analysis. By instructing Roy to breathe slowly, it helps him to take deep breaths and effectively cough to produce a good sputum sample. Additionally, asking him to expectorate directly into the specimen container helps prevent contamination from saliva or other sources, ensuring the accuracy of the specimen collected for testing.

Correct Answer: B

Rationale: The first step in the qualitative research process is typically conducting a review of existing literature on the topic of interest. This involves exploring existing research studies, theories, and findings related to the area being studied. By reviewing the literature, researchers can gain a better understanding of the current knowledge and identify gaps in the existing research that their study can address. This step helps researchers define the research question, refine the study design, and establish a strong theoretical framework for the study.

Correct Answer: A

Rationale: X-ray is the most appropriate imaging modality for evaluating wrist involvement in rheumatoid arthritis. It can show joint space narrowing, erosions, soft tissue swelling, and periarticular osteopenia. X-rays are readily available, cost-effective, and provide valuable information about joint damage and disease progression in rheumatoid arthritis. In this case, X-ray would be able to confirm the presence of erosions, joint deformities, and assess the severity of the disease in the wrist joint. While MRI and ultrasound can also be helpful in evaluating rheumatoid arthritis, X-ray remains the initial imaging modality of choice due to its convenience and ability to assess bony changes. Dual-energy X-ray absorptiometry (DEXA) scan is not indicated for evaluating wrist involvement in rheumatoid arthritis.

Correct Answer: A

Rationale: The MAJOR characteristic of negotiation is being positive in your approach since optimism typically leads to more favorable results. Negotiation involves communication, compromise, and finding mutually beneficial solutions. Approaching negotiations with a positive mindset can help in maintaining a constructive atmosphere, enhancing communication, and increasing the likelihood of reaching a successful agreement. Being positive can also contribute to building relationships and trust with the other party, leading to better long-term outcomes.