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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Select the age group that is coupled with an infectious disease that is most common in this age group.
- A. Infants: High bilirubin
- B. Pre-School and School Age Children: Shingles
- C. Young Adults and Teenagers: Sexually transmitted diseases
- D. The Elderly: Malaria
Correct Answer: C
Rationale: Young adults and teenagers are at the highest risk for sexually transmitted diseases due to their sexual activity. High bilirubin is a laboratory finding related to jaundice and not an infectious disease. Shingles is more common in the elderly population, not in pre-school and school-age children. Malaria is not most common in the elderly; it is prevalent in regions with specific mosquito vectors. Therefore, the correct answer is that young adults and teenagers are most commonly associated with sexually transmitted diseases.
You are turning your patient in bed and notice that a confused and lethargic patient had loose car keys and lipstick in the bed and had been lying on them. What is this person at risk for due to all three of these factors: confusion, lethargy, and items in the bed?
- A. Falls
- B. Skin breakdown
- C. Apnea
- D. Lack of mobility
Correct Answer: B
Rationale: This patient is at great risk for skin breakdown due to the presence of three specific risk factors: confusion, lethargy, and items in the bed. While confusion puts the patient at risk for falls, confusion and lethargy together may lead to a lack of mobility. However, skin breakdown is the primary concern in this scenario as it is associated with all three risk factors - confusion, lethargy, and the presence of items in the bed. Therefore, the correct answer is 'Skin breakdown'.
Elderly patients are more prone to dehydration than younger people because the elderly ___________.
- A. drink more coffee and tea
- B. have more stomach mucus production
- C. have more saliva
- D. have less sense of thirst
Correct Answer: D
Rationale: Elderly patients are prone to dehydration because they have a lower and diminished sense of thirst. This reduced sensation of thirst makes them less likely to drink an adequate amount of fluids, leading to dehydration. While it is true that elderly individuals may also have changes such as decreased stomach mucus production and saliva production, these factors do not directly contribute to dehydration. Drinking more coffee and tea, as mentioned in choice A, is not a consistent behavior among all elderly individuals and is not a primary reason for their increased risk of dehydration.
A systemic sign of infection is ______________.
- A. swelling
- B. redness
- C. heat
- D. a lack of appetite
Correct Answer: D
Rationale: The correct answer is 'a lack of appetite.' When a person experiences a systemic infection, they may exhibit signs that affect the entire body. A lack of appetite is a common systemic sign of infection, along with other symptoms like rapid pulse, fever, and an elevated white blood cell count. Swelling, redness, and heat are more indicative of localized inflammation or infection, rather than systemic involvement.
Which of these devices is considered a protective device, rather than a restraint?
- A. A mitten on the hands to prevent scratching
- B. A mitten on the hands to prevent the person from pulling their IV out
- C. A side rail to prevent the patient from falling
- D. A soft wrist restraint to prevent the patient from pulling their IV tubing
Correct Answer: A
Rationale: A mitten on the hands to prevent scratching is considered a protective device because its primary purpose is to protect the patient from harming themselves by scratching. It does not restrict the patient's movement. Choice B, a mitten on the hands to prevent the person from pulling their IV out, is considered a restraint as it limits the patient's movement. Choice C, a side rail to prevent the patient from falling, is also a protective device as it aims to keep the patient safe by providing support and preventing falls. Choice D, a soft wrist restraint to prevent the patient from pulling their IV tubing, is a type of restraint as it restricts the patient's movement to prevent them from interfering with medical equipment.