Correct Answer: C

Rationale: The correct answer is C because positioning oneself at eye level helps the patient see the nurse's facial expressions and lip movements, aiding in communication. Speaking clearly and slowly allows the patient to better understand. Speaking loudly can distort sound and may not be necessary. Avoiding visual aids or gestures limits communication channels. Speaking quickly can overwhelm the patient and hinder comprehension.

Correct Answer: B

Rationale: The correct answer is B: pulse rates. Pulse rates can be analyzed on the ratio level of measurement because they have a true zero point and allow for meaningful ratios to be calculated. This means that we can perform operations such as addition, subtraction, multiplication, and division on pulse rate data. In contrast, the other options (A: eye color, C: ethnicity, D: gender) are categorical data that do not have a true zero point and therefore cannot be analyzed on the ratio level. Eye color, ethnicity, and gender are all examples of nominal data which only allow for qualitative classification and do not have a numerical value that can be used in mathematical operations.

Correct Answer: A

Rationale: The correct answer is A: Pulmonary embolism. This is the most likely cause of the symptoms based on the presentation of chest pain, dyspnea, hemoptysis, and a mismatched defect on the V/Q scan. A pulmonary embolism occurs when a blood clot travels to the lungs, causing a blockage in the pulmonary artery. This can lead to symptoms like chest pain, shortness of breath, and coughing up blood. The V/Q scan showing a mismatched defect indicates a ventilation-perfusion mismatch, which is a classic finding in pulmonary embolism. Pericarditis (B), acute myocardial infarction (C), and aortic dissection (D) typically present with different sets of symptoms and do not match the V/Q scan findings in this case.

Correct Answer: C

Rationale: The correct answer is C: Umbilicus. The nurse begins assessing the uterine fundus at the level of the umbilicus as it is a standard reference point for postpartum fundal height measurement. This location allows for consistency and accuracy in tracking the descent of the uterus back into the pelvic cavity. Starting at the umbilicus also helps in monitoring the involution process and prevents potential errors in fundal height assessment. Symphysis pubis (A) is too low and not typically used as a reference point for uterine fundal assessment. Midline (B) is vague and does not provide a specific anatomical landmark. Sides of the abdomen (D) do not give a standardized starting point for measuring the uterine fundus, leading to potential variability in assessment.

Correct Answer: C

Rationale: Step 1: Job description is crucial for clarifying roles and responsibilities, ensuring staff understand their duties. Step 2: Regular review of job descriptions helps align staff performance with organizational goals and expectations. Step 3: It allows for identifying areas of improvement and providing necessary support and resources. Step 4: Academic performance in college, family dynamics, and number of incident reports are not directly related to work performance. Summary: Regularly reviewing staff job descriptions is essential for enhancing performance by clarifying roles, aligning expectations, and identifying areas for improvement. Other choices lack direct relevance to work performance.