Which of the following cellular receptors is responsible for recognizing pathogen-associated molecular patterns (PAMPs) and initiating innate immune responses?
- A. Toll-like receptors (TLRs)
- B. B cell receptors (BCRs)
- C. T cell receptors (TCRs)
- D. Fc receptors
Correct Answer: A
Rationale: Toll-like receptors (TLRs) are a group of cellular receptors responsible for recognizing pathogen-associated molecular patterns (PAMPs), which are molecular components commonly found on pathogens like bacteria and viruses. When TLRs recognize these PAMPs, they initiate signaling pathways that trigger the innate immune response, leading to inflammation, antimicrobial defense, and the activation of adaptive immunity. B cell receptors (BCRs) and T cell receptors (TCRs) are involved in adaptive immune responses and recognize specific antigens rather than PAMPs. Fc receptors primarily bind to the Fc portion of antibodies and are involved in antibody-mediated immune responses. Thus, TLRs specifically play a critical role in sensing and responding to pathogens through the recognition of PAMPs.
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In CO-PAR, which is the MOST important role of the public health nurse?
- A. Caregiver
- B. Financer
- C. Expert
- D. Adviser
Correct Answer: C
Rationale: In the context of CO-PAR (Community Organizing Participatory Action Research), the most important role of the public health nurse is being an expert. Public health nurses are expected to have specialized knowledge and skills in the field of public health, allowing them to provide evidence-based guidance and interventions to support community health initiatives. As an expert, the public health nurse can assess community needs, develop appropriate interventions, educate community members on health promotion and disease prevention, and evaluate the effectiveness of implemented programs. By utilizing their expertise, public health nurses can effectively contribute to improving the health outcomes and well-being of the community they serve.
Sandro is taking pemoline (Cylert) for ADHD. The nurse must be aware of which of the following side effects?
- A. Decreased red blood cell count
- B. Elevated white blood cell count
- C. Decreased thyroid stimulating hormones
- D. elevated liver function test results
Correct Answer: D
Rationale: Pemoline (Cylert) is a central nervous system stimulant used in the treatment of ADHD. One of the significant potential side effects of pemoline is hepatotoxicity, which can manifest as elevated liver function test results. Therefore, the nurse must monitor the patient's liver function regularly while they are taking pemoline to monitor for any signs of liver damage or dysfunction. It is essential to educate the patient about the signs and symptoms of liver problems, such as jaundice (yellowing of the skin or eyes), abdominal pain, nausea, or dark urine, and to report any such symptoms immediately to their healthcare provider. Regular monitoring and early detection of liver function abnormalities can help prevent severe liver damage in patients taking pemoline.
A patient presents with sudden-onset, severe eye pain, headache, nausea, and vomiting. On examination, the affected eye appears red, with a steamy cornea and mid-dilated, non-reactive pupil. Which of the following conditions is most likely responsible for this presentation?
- A. Acute angle-closure glaucoma
- B. Central retinal artery occlusion
- C. Optic neuritis
- D. Corneal ulcer
Correct Answer: A
Rationale: The described presentation is classic for acute angle-closure glaucoma. This condition is characterized by sudden-onset severe eye pain, headache, nausea, and vomiting. The red eye, steamy cornea (corneal edema), and mid-dilated non-reactive pupil are consistent with acute angle-closure glaucoma. The sudden increase in intraocular pressure leads to impaired aqueous humor outflow, causing these symptoms. Immediate intervention is required to prevent permanent vision loss in such cases. Central retinal artery occlusion would present with sudden painless vision loss. Optic neuritis typically presents with vision loss and pain with eye movements. Corneal ulcer presents with eye discomfort, foreign body sensation, and may have a history of corneal trauma or contact lens wear.
Nurse Nanie is aware that history taking and physical exam are critical to the diagnostic process and often provide more information than can be gained broad testing strategies. History taking includes the by following, EXCEPT _______
- A. History of present illness
- B. Religious Affiliation
- C. Social & Family history
- D. Past medical history
Correct Answer: B
Rationale: Religious Affiliation is not typically included in the history taking process for diagnosing medical conditions. While a patient's religious beliefs may sometimes be relevant in certain situations, it is not a standard component of medical history. History taking usually includes aspects such as the history of present illness, social and family history, and past medical history as these can provide important information related to the patient's health condition.
The physician ordered sonography. The nurse informs the ultrasound unit in charge and prepares the patient for the procedure. The patient asks the importance of the procedure, the nurse CORRECT response is________.
- A. to determine diameters of the fetal skull
- B. increase sensitivity for common bile duct of the fetus
- C. useful to a visualized cystic duct of the fetus
- D. to assess fetus' well-being
Correct Answer: D
Rationale: Sonography, also known as ultrasound, is a non-invasive imaging technique that uses high-frequency sound waves to create images of structures inside the body. In the context of a patient who is pregnant, sonography is commonly used to assess the well-being of the fetus. It allows healthcare providers to monitor the growth and development of the fetus, evaluate the placenta, amniotic fluid levels, and detect any abnormalities that may be present.