Nokea
Which of the following is TRUE about the blood pressure determinants?
- A. Hypervolemia lowers BP
- B. Hypervolemia increases GFR
- C. HCT of 70% might decrease or increase BP
- D. Epinephrine decreases BP
Correct Answer: C
Rationale: HCT 70% e.g., polycythemia can raise BP (viscosity) or lower (poor flow), unlike hypervolemia (raises BP, GFR), or epinephrine (raises). Nurses assess this e.g., anemia for impacts, per dynamics.
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A client with a spinal cord injury suddenly develops a throbbing headache, nasal congestion, and a blood pressure of 210/110 mm Hg. Which action should the nurse perform first?
- A. Administer a prescribed antihypertensive
- B. Check the client's bladder for distention
- C. Place the client in a supine position
- D. Notify the healthcare provider
Correct Answer: B
Rationale: Symptoms (headache, congestion, BP 210/110) indicate autonomic dysreflexia; checking bladder distention (B) identifies the trigger first. Medication (A) or supine (C) is secondary. Notification (D) follows. B is correct. Rationale: Removing the stimulus (e.g., bladder) halts dysreflexia, a priority per SCI protocols, preventing hypertensive crisis.
One tablet of chlorine is efficient to chlorinate how many litres of water?
- A. 10 Litres
- B. 20 Litres
- C. 30 Litres
- D. 40 Litres
Correct Answer: B
Rationale: Chlorine tablets disinfect water by releasing hypochlorous acid to kill pathogens. Standard tablets (e.g., 1 mg chlorine) are designed to treat specific volumes based on concentration needs (typically 0.5-2 mg/L). Choice A (10 L) underestimates common tablet capacity, while C (30 L) and D (40 L) exceed typical single-tablet efficacy without specifying tablet strength. B (20 L) aligns with widely used chlorine tablets (e.g., NaDCC) for household water purification, achieving safe levels per WHO guidelines. Nurses educating communities on water safety must clarify dosage, ensuring effective pathogen control without overdose, making 20 L the correct, practical answer.
The physician orders a platelet count to be performed on Mrs. Smith after breakfast. The nurse is responsible for:
- A. Instructing the patient about this diagnostic test
- B. Writing the order for this test
- C. Giving the patient breakfast
- D. All of the above
Correct Answer: C
Rationale: The nurse ensures the patient eats, while the physician handles test orders and instructions.
The nurse asked an aide to check Mr. Gary's vitals. This is an example of?
- A. Delegation
- B. Responsibility
- C. Malpractice
- D. Health policy
Correct Answer: A
Rationale: Asking an aide for vitals is delegation (A) task assignment, per definition. Responsibility (B) duty, malpractice (C) breach, policy (D) rules not delegation-specific. A fits the nurse's supervised task for Mr. Gary, making it correct.
Mr. Gary's insurance paid for his hospital stay. This is an example of?
- A. Health care financing
- B. Cost-effectiveness
- C. Health policy
- D. Patient education
Correct Answer: A
Rationale: Insurance paying is health care financing (A) funding services, per definition. Cost-effectiveness (B) value, policy (C) rules, education (D) teaching not funding-specific. A fits Mr. Gary's care support, making it correct.