Nursing Elites

1. What term describes the phenomenon of two waves canceling each other out when they meet?

• A. Refraction
• B. Diffraction
• C. Destructive interference
• D. Constructive interference

Correct answer: C

Rationale: Destructive interference occurs when two waves meet and their amplitudes are such that they cancel each other out, resulting in a wave with a smaller amplitude or no wave at all. This is in contrast to constructive interference, where two waves combine to produce a wave with a larger amplitude. Refraction and diffraction are phenomena related to the bending of waves as they pass through different mediums or obstacles, respectively.

2. Kathleen knows that one of her staff is experiencing burnout. Which of the following is the

• A. Advise her staff to go on vacation.
• B. Ignore her observations; it will be resolved even without intervention
• C. Remind her to show loyalty to the institution.
• D. Let the staff ventilate her feelings and ask how she can be of help.

Correct answer: C

Rationale: The correct answer is C: 'Remind her to show loyalty to the institution.' When an employee is experiencing burnout, it is important for the supervisor to address the issue with compassion and support. Reminding the staff member to show loyalty to the institution can help them feel valued and appreciated, which can contribute to their overall well-being. This response emphasizes the importance of fostering a positive work environment and promoting a sense of belonging. Options A and B do not address the root cause of burnout and may not effectively support the staff member. Option D, while encouraging communication, does not address the loyalty aspect which can be crucial in improving morale and reducing burnout.

3. Endotoxins are toxic substances released by:

• A. Viruses
• B. Bacteria (gram-positive)
• C. Bacteria (gram-negative)
• D. Parasites

Correct answer: C

Rationale: Rationale: Endotoxins are toxic substances that are part of the outer membrane of the cell wall of gram-negative bacteria. These toxins are released when the bacteria are destroyed or during bacterial growth. Endotoxins can cause a variety of harmful effects in the host, including fever, inflammation, and septic shock. Viruses do not produce endotoxins, and gram-positive bacteria produce exotoxins rather than endotoxins. Parasites are not typically associated with the production of endotoxins.

4. When a blockage forms in a coronary artery, reducing blood flow to the heart muscle, this condition is called:

• A. Atherosclerosis
• B. Myocardial infarction
• C. Angina pectoris
• D. Heart murmur

Correct answer: C

Rationale: The correct answer is C: "Angina pectoris." Angina pectoris is the condition that occurs when there is a blockage in a coronary artery, leading to reduced blood flow to the heart muscle. This decreased blood flow can cause chest pain or discomfort, typically during physical exertion or stress. Atherosclerosis (option A) is the buildup of plaque in the artery walls, which can lead to blockages. Myocardial infarction (option B) refers to a heart attack, which occurs when there is a complete blockage in a coronary artery resulting in damage to the heart muscle. A heart murmur (option D) is an abnormal sound heard during the heartbeat, not directly related to a blockage in a coronary artery. Therefore, the correct term for a blockage in a coronary artery that reduces blood flow to the heart muscle is angina pectoris.

5. The spleen, an organ associated with the lymphatic system, plays a crucial role in:

• A. Regulating blood sugar levels
• B. Filtering blood and destroying old red blood cells
• C. Producing digestive enzymes
• D. Secreting hormones

Correct answer: B

Rationale: The correct answer is B: 'Filtering blood and destroying old red blood cells.' The spleen is part of the lymphatic system and acts as a blood filter, removing old or damaged red blood cells and helping to fight infections. It does not play a role in regulating blood sugar levels (A), producing digestive enzymes (C), or secreting hormones (D). Understanding the function of the spleen in filtering blood and removing old red blood cells is crucial for grasping its role in maintaining overall health and immunity.

6. Which phenomenon explains the formation of rainbows in the sky?

• A. Diffraction
• B. Interference
• C. Refraction and dispersion of sunlight by water droplets.
• D. Reflection from clouds

Correct answer: C

Rationale: Refraction and dispersion of sunlight by water droplets in the atmosphere separate white light into its constituent colors, creating the rainbow phenomenon.

Similar Questions