Correct Answer: C

Rationale: Clients undergoing nasogastric suctioning are at highest risk for developing metabolic imbalances, specifically metabolic acidosis. Nasogastric suctioning can lead to the loss of gastric acid, which in turn can cause metabolic acidosis due to a decrease in bicarbonate levels in the body. This disruption in the acid-base balance can result in symptoms such as confusion, headache, and overall malaise. It is crucial for the nurse to monitor the client's acid-base status closely and provide appropriate interventions to prevent or correct metabolic acidosis.

Correct Answer: D

Rationale: The clinical presentation of chest pain, dyspnea, and a friction rub heard on auscultation is suggestive of pericarditis. The diffuse ST-segment elevation seen on the electrocardiogram (ECG) is a classic finding in pericarditis, known as the "universal sign." In contrast, stable angina typically presents with chest pain on exertion that is relieved by rest or nitroglycerin, while unstable angina presents with chest pain at rest or with minimal exertion. Acute myocardial infarction would typically present with ST-segment elevation in specific leads correlating with the area of myocardial ischemia/infarction. However, in the context of diffuse ST-segment elevation and symptoms suggestive of inflammation (friction rub), the most likely diagnosis is pericarditis.

Correct Answer: C

Rationale: Qualitative research design focuses on gaining an in-depth understanding of attitudes, beliefs, motivations, and behaviors of individuals or groups. It does not typically involve statistical analysis or estimation of relationships between variables like quantitative designs do. Qualitative research involves collecting data through methods such as interviews, observations, or focus groups to provide rich and detailed insights into the experiences and perspectives of the participants. The emphasis is on understanding the meanings individuals attach to their experiences, rather than generalizing findings to a larger population.

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: B

Rationale: Morbidity refers to the state of being diseased or unhealthy, which is not directly related to population growth. On the other hand, fertility, mortality, and migration are three fundamental demographic variables that significantly influence population growth. Fertility refers to the ability of a population to produce offspring, mortality deals with death rates within a population, and migration involves the movement of individuals into or out of a particular area. These three variables play crucial roles in shaping the size and composition of a population over time.