Nokea
Which of the following white blood cells is the smallest and can be involved in humoral immunity?
- A. Lymphocyte
- B. Monocyte
- C. Basophil
- D. Erythrocyte
Correct Answer: A
Rationale: The correct answer is 'Lymphocyte.' Lymphocytes are the smallest type of white blood cells and play a crucial role in humoral immunity by producing antibodies. Monocytes are actually the largest white blood cells and are involved in phagocytosis rather than humoral immunity. Basophils are a type of granulocyte involved in allergic reactions, and erythrocytes are red blood cells responsible for oxygen transport, not part of the immune system.
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An occupational health nurse works at a manufacturing plant where there is potential exposure to inhaled dust. Which action, if recommended by the nurse, will be most helpful in reducing the incidence of lung disease?
- A. Treat workers with pulmonary fibrosis.
- B. Teach about symptoms of lung disease.
- C. Require the use of protective equipment.
- D. Monitor workers for coughing and wheezing.
Correct Answer: C
Rationale: Prevention of lung disease requires the use of appropriate protective equipment such as masks to reduce exposure to inhaled dust, which is a significant risk factor for lung disease. Teaching about symptoms of lung disease, treating workers with pulmonary fibrosis, and monitoring for coughing and wheezing are important actions for early recognition and treatment of lung disease. However, the most effective strategy to prevent lung damage in this scenario is to require the use of protective equipment to minimize exposure to harmful substances.
The nurse teaches a patient about the transmission of pulmonary tuberculosis (TB). Which statement, if made by the patient, indicates that teaching was effective?
- A. I will avoid being outdoors whenever possible.
- B. My husband will be sleeping in the guest bedroom.
- C. I will take the bus instead of driving to visit my friends.
- D. I will keep the windows closed at home to contain the germs.
Correct Answer: B
Rationale: To prevent the transmission of pulmonary tuberculosis, it is important for the infected individual to minimize exposure to close contacts and household members. Sleeping alone in a separate room, like the guest bedroom, is an effective measure. The other choices are not ideal: Choice A is incorrect because spending time outdoors is encouraged for ventilation; Choice C is incorrect as using public transportation increases the risk of transmission; Choice D is incorrect because keeping windows closed limits ventilation, which is necessary to reduce the concentration of infectious particles in the air.
What action by the nurse will be most effective in decreasing the spread of pertussis in a community setting?
- A. Providing supportive care to patients diagnosed with pertussis
- B. Teaching family members about the importance of careful handwashing
- C. Teaching patients about the necessity of adult pertussis immunizations
- D. Encouraging patients to complete the prescribed course of antibiotics
Correct Answer: C
Rationale: The most effective action by the nurse to decrease the spread of pertussis in a community setting is to teach patients about the necessity of adult pertussis immunizations. The increased rate of pertussis in adults is often attributed to waning immunity after childhood immunization. Immunization is highly effective in protecting communities from infectious diseases. While teaching about handwashing is important for overall infection control, pertussis is primarily spread through respiratory droplets and contact with secretions. Providing supportive care does not significantly impact the disease course or transmission risk. Encouraging completion of antibiotics may help reduce transmission, but patients likely have already spread the disease by the time the diagnosis is made. Therefore, the emphasis should be on prevention through immunization to reduce the spread of pertussis.
Sinusitis is caused by:
- A. Bacteria
- B. Fungus
- C. Virus
- D. Any of the above
Correct Answer: D
Rationale: Sinusitis can be caused by bacteria, viruses, or fungi. While bacterial infections are the most common cause, viral or fungal infections can also lead to sinusitis. Therefore, the correct answer is 'Any of the above.' Choices A, B, and C are incorrect because they only represent individual causes of sinusitis, whereas choice D encompasses all possible causes.
What consideration is important when caring for a female Muslim patient?
- A. Make eye contact
- B. Provide long-sleeved gowns or allow her to use her own
- C. Touch while talking
- D. Assign male caregivers when possible
Correct Answer: B
Rationale: When caring for a female Muslim patient, providing long-sleeved gowns or allowing her to use her own clothing is crucial. Most Muslim women prefer to cover their whole body, even during examinations. Offering long gowns with long sleeves or allowing the patient to use her own clothing respects her cultural and religious preferences. Making eye contact is not a common practice in some Muslim cultures, so it's important to be mindful of this and respect the patient's preferences. Touching while talking may not be culturally appropriate for some Muslim patients, so it's best to avoid it unless necessary. Assigning female caregivers is often preferred to respect the patient's modesty and religious beliefs. If a male caregiver or physician needs to interact with the patient, the patient's husband may request to be present in the room.