Nokea
Which of the following is NOT a second-line agent used for the treatment of Tuberculosis?
- A. Amikacin
- B. Moxifloxacin
- C. Rifabutin
- D. Cycloserine
Correct Answer: C
Rationale: The correct answer is C, Rifabutin. Rifabutin is actually a first-line drug used in the treatment of tuberculosis. Choices A, B, and D (Amikacin, Moxifloxacin, and Cycloserine) are considered second-line agents for tuberculosis treatment. These drugs are used when the first-line medications are either ineffective or cannot be tolerated by the patient.
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Which action should the PN implement when using standard precautions to provide client care?
- A. Apply sterile gloves to obtain a finger stick blood sample
- B. Wear clean exam gloves to perform perineal catheter care
- C. Replace the needle cap after giving an intramuscular injection
- D. Wear a paper gown to prevent transmission of droplet pathogens
Correct Answer: B
Rationale: The correct answer is B. When using standard precautions, healthcare providers should wear clean exam gloves to perform perineal catheter care. This approach helps prevent the transmission of pathogens and ensures the safety of both the client and the healthcare provider. Choice A is incorrect because applying sterile gloves for a finger stick blood sample is unnecessary when non-sterile gloves would suffice. Choice C is incorrect because replacing the needle cap after giving an intramuscular injection is not directly related to standard precautions. Choice D is incorrect because wearing a paper gown is not a standard precaution for preventing the transmission of droplet pathogens.
What is the primary role of the sinoatrial (SA) node in the heart?
- A. Pacemaker of the heart
- B. Blood pressure regulation
- C. Electrical conduction delay
- D. Stimulating muscle contraction
Correct Answer: A
Rationale: The correct answer is A: Pacemaker of the heart. The SA node, known as the natural pacemaker, initiates the electrical impulses that set the rhythm for the heartbeat. It is responsible for coordinating the heart's contractions by generating electrical signals at regular intervals. Choice B is incorrect as the SA node's primary function is not related to blood pressure regulation. Choice C is incorrect as the SA node does not cause electrical conduction delay but rather initiates and conducts the electrical impulses. Choice D is incorrect as the SA node does not directly stimulate muscle contraction but rather initiates the electrical events that lead to muscle contraction.
Which condition is characterized by a progressive loss of muscle strength due to an autoimmune attack on acetylcholine receptors?
- A. Myasthenia gravis
- B. Multiple sclerosis
- C. Amyotrophic lateral sclerosis
- D. Guillain-Barr© syndrome
Correct Answer: A
Rationale: The correct answer is A: Myasthenia gravis. Myasthenia gravis is characterized by muscle weakness caused by autoimmune attack on acetylcholine receptors at the neuromuscular junction. This results in impaired communication between nerves and muscles. Choice B, Multiple sclerosis, is a condition where the immune system attacks the protective myelin sheath covering the nerves in the central nervous system, leading to communication issues between the brain and the rest of the body. Choice C, Amyotrophic lateral sclerosis, is a progressive neurodegenerative disease affecting motor neurons in the brain and spinal cord, not involving acetylcholine receptors. Choice D, Guillain-Barr© syndrome, is an acute condition where the immune system attacks the peripheral nerves, causing muscle weakness and paralysis, but it does not target acetylcholine receptors.
What is the primary purpose of administering Rho(D) immune globulin (RhoGAM) to an Rh-negative mother after childbirth?
- A. To prevent Rh sensitization in future pregnancies
- B. To treat anemia in the newborn
- C. To increase the mother's white blood cell count
- D. To prevent infection in the newborn
Correct Answer: A
Rationale: The correct answer is A: To prevent Rh sensitization in future pregnancies. RhoGAM is given to an Rh-negative mother to prevent the development of antibodies against Rh-positive blood cells. This prevents Rh sensitization, which could lead to hemolytic disease in future Rh-positive pregnancies. Choices B, C, and D are incorrect because RhoGAM is not used to treat anemia in the newborn, increase the mother's white blood cell count, or prevent infection in the newborn.
During a fire incident in a long-term care facility's kitchen, which task is most crucial for the PN to perform instead of delegating to UAP?
- A. Close the doors to all residents' rooms
- B. Offer comfort and reassurance to each resident
- C. Identify the method for transporting and evacuating each resident
- D. Provide blankets to each resident for use during evacuation
Correct Answer: C
Rationale: During a fire emergency, the most critical task for the PN is to identify the method for transporting and evacuating each resident. This task ensures a safe and organized evacuation plan, which is essential for everyone's safety. Delegating this responsibility to an unlicensed assistive personnel (UAP) may lead to errors or delays in the evacuation process. Closing doors to residents' rooms (Choice A) can help contain the fire but is not as urgent as planning the evacuation. While offering comfort and reassurance (Choice B) is important, it should not take precedence over ensuring a safe evacuation. Providing blankets (Choice D) is helpful but does not directly address the primary concern of safely evacuating residents.