Nokea
What is the 24-hour day-night cycle known as?
- A. circadian rhythm
- B. infradian rhythm
- C. ultradian rhythm
- D. non-REM rhythm
Correct Answer: A
Rationale: The correct answer is circadian rhythm. Circadian rhythm refers to the rhythmic repetition of patterns that occur approximately every 24 hours, regulating various biological processes related to the day-night cycle. Infradian rhythm, which is longer than 24 hours, and ultradian rhythm, which is shorter than 24 hours, are not the correct terms for the 24-hour cycle. Non-REM rhythm does not specifically relate to the 24-hour day-night cycle, making it an incorrect choice.
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Which of the following are antiviral drug classes used in the treatment of HIV/AIDS?
- A. Nucleoside reverse transcriptase inhibitors
- B. Protease inhibitors
- C. HIV fusion inhibitors
- D. All of the above
Correct Answer: D
Rationale: The correct answer is 'All of the above.' Nucleoside reverse transcriptase inhibitors inhibit the enzyme reverse transcriptase, protease inhibitors block the activity of the HIV-1 protease enzyme, and HIV fusion inhibitors prevent HIV from entering human cells. Therefore, all the choices provided are valid antiviral drug classes for managing HIV/AIDS. Nucleoside reverse transcriptase inhibitors, protease inhibitors, and HIV fusion inhibitors play crucial roles in combating the virus at different stages. Nucleoside reverse transcriptase inhibitors target an early stage, protease inhibitors act on a later stage, and HIV fusion inhibitors prevent viral entry. Thus, 'All of the above' is the correct and comprehensive answer encompassing different mechanisms of action in managing HIV/AIDS.
A syringe pump is a type of electronic infusion pump used to infuse fluids or medications directly from a syringe. This device is commonly used for:
- A. solutions administered in obstetrics.
- B. dilute antibiotics.
- C. large volumes of IV solutions.
- D. the neonatal and pediatric populations.
Correct Answer: D
Rationale: The correct answer is 'the neonatal and pediatric populations.' Syringe pumps are commonly used in neonatal and pediatric populations because they allow for precise infusion of small volumes of medications or fluids at controlled rates. This is crucial for ensuring safety and accuracy in these delicate populations. Choice A is incorrect because syringe pumps are not limited to obstetrics; they are used in various healthcare settings. Choices B and C are incorrect because syringe pumps are not typically used for dilute antibiotics or large volumes of IV solutions. Instead, they are preferred for delivering small volumes accurately, making them ideal for neonatal and pediatric care.
What sign might the nurse observe in a client with a high ammonia level?
- A. coma
- B. edema
- C. hypoxia
- D. polyuria
Correct Answer: A
Rationale: Coma is a sign that a nurse might observe in a client with a high ammonia level. Elevated ammonia levels can lead to hepatic encephalopathy, a condition characterized by impaired brain function, which can progress to coma. Edema (choice B) is swelling caused by excess fluid trapped in body tissues, not typically associated with high ammonia levels. Hypoxia (choice C) is a condition of inadequate oxygen supply to tissues and is not directly related to high ammonia levels. Polyuria (choice D) refers to excessive urination and is not a typical sign of high ammonia levels.
Which of the following neurological disorders is characterized by writhing, twisting movements of the face and limbs?
- A. epilepsy
- B. Parkinson's
- C. multiple sclerosis
- D. Huntington's chorea
Correct Answer: D
Rationale: Huntington's chorea is a neurological disorder characterized by writhing, twisting movements of the face and limbs, known as chorea. Epilepsy is characterized by seizures, not writhing, twisting movements. Parkinson's disease presents with tremors, rigidity, and bradykinesia, not writhing, twisting movements. Multiple sclerosis affects the central nervous system but does not typically involve writhing, twisting movements. Therefore, the correct answer is Huntington's chorea as it specifically manifests with these characteristic movements.
Which of the following is an indication for electroencephalography?
- A. paralysis
- B. neuropathy
- C. seizure disorder
- D. myocardial infarction
Correct Answer: C
Rationale: The correct answer is C: 'seizure disorder.' Electroencephalography is used to assess clients with seizure disorders by recording the brain's electrical activity. Seizure disorder is a primary indication for an EEG as it helps in diagnosing and managing seizure activity. Paralysis (choice A) is not typically an indication for an EEG as it relates to loss of muscle function rather than brain activity. Neuropathy (choice B) involves nerve damage and is not directly assessed by an EEG. Myocardial infarction (choice D) is related to heart issues and is not a condition that an EEG is used to diagnose.