Nokea
What indicates to the nurse that a patient with oliguria has prerenal oliguria?
- A. Urine testing reveals a low specific gravity.
- B. Causative factor is malignant hypertension.
- C. Urine testing reveals a high sodium concentration.
- D. Reversal of oliguria occurs with fluid replacement.
Correct Answer: A
Rationale: The correct answer is A because prerenal oliguria is typically characterized by a low specific gravity in urine testing. This indicates that the kidneys are conserving water due to decreased blood flow or volume. Choices B and C are incorrect as they do not specifically relate to prerenal oliguria. Choice D is also incorrect as reversal of oliguria with fluid replacement is not specific to prerenal oliguria and can occur in other types of renal failure.
You may also like to solve these questions
Which of the following drugs for treatment of leprosy can cause hemolysis especially in patients with G6PD deficiency?
- A. Dapsone
- B. Rifampicin
- C. Clofazimine
- D. None of these
Correct Answer: A
Rationale: The correct answer is A: Dapsone. Dapsone is known to cause hemolysis in patients with G6PD deficiency due to oxidative stress. G6PD deficiency leads to reduced ability to protect red blood cells from oxidative damage, which can be exacerbated by drugs like dapsone. Rifampicin and clofazimine are not associated with hemolysis in G6PD deficient patients. Option D is incorrect as dapsone is known to cause hemolysis in this population.
Where are the glomeruli and Bowman’s capsules found?
- A. Renal pelvis
- B. Ureter
- C. Renal cortex
- D. Renal column
Correct Answer: C
Rationale: The glomeruli and Bowman's capsules are found in the renal cortex. The renal cortex is the outer layer of the kidney where the initial stages of urine formation occur. Glomeruli are clusters of capillaries responsible for filtering blood, while Bowman's capsules surround the glomeruli and collect the filtrate. The renal pelvis (A) is the innermost part of the kidney where urine collects before entering the ureter (B). Renal columns (D) are extensions of the renal cortex that project into the renal medulla. Therefore, the correct answer is C as it accurately locates the structures involved in urine filtration.
When the nurse is performing a testicular examination on a 25-year-old man, which finding is considered normal?
- A. Nontender subcutaneous plaques
- B. Scrotal area that is dry, scaly, and nodular
- C. Testes that feel oval and movable and are slightly sensitive to compression
- D. Single, hard, circumscribed, movaNblUe RmSaIsNsG, lTeBss. CthOaMn 1 cm under the surface of the testes
Correct Answer: C
Rationale: The correct answer is C because testes that feel oval, movable, and slightly sensitive to compression are considered normal during a testicular examination in a 25-year-old man. This finding indicates normal testicular anatomy and function.
Rationale:
1. Oval shape: Normal testes are typically oval in shape.
2. Movable: Normal testes should be able to move slightly within the scrotum.
3. Sensitive to compression: Slight sensitivity to compression is normal due to the presence of nerves and blood vessels in the testes.
Summary of other choices:
A: Nontender subcutaneous plaques - Not normal; could indicate conditions like Peyronie's disease.
B: Scrotal area that is dry, scaly, and nodular - Not normal; could suggest dermatological conditions or infections.
D: Single, hard, circumscribed, movable mass 1 cm under the surface of the testes - Not normal; could be indicative of a test
Which of the following viruses is most susceptible to acyclovir?: *
- A. Herpes simplex Type 1 virus
- B. Herpes simplex Type 2 virus
- C. Varicell
- D. zoster virus
Correct Answer: A
Rationale: Acyclovir is a nucleoside analog that inhibits viral DNA replication by targeting viral DNA polymerase. Herpes simplex Type 1 virus is most susceptible to acyclovir because it is a DNA virus that requires viral DNA polymerase for replication. The drug is selectively activated by viral thymidine kinase in infected cells, leading to its antiviral activity. Herpes simplex Type 2, Varicella zoster, and other viruses do not possess the same susceptibility to acyclovir due to differences in their replication mechanisms.
Your patient does not seem to be responding to conservative treatment for acute renal failure, and dialysis is being considered. You understand that the main indication for dialysis is
- A. generalized edema
- B. elevated blood pressure
- C. elevated blood calcium
- D. a high and rising level of potassium
Correct Answer: D
Rationale: The correct answer is D: a high and rising level of potassium. Dialysis is indicated in acute renal failure when the patient has severe electrolyte imbalances, especially hyperkalemia, which can lead to life-threatening arrhythmias. Potassium levels must be closely monitored, and if they are high and continue to rise despite conservative treatment, dialysis is necessary to quickly lower the potassium levels. Generalized edema (A) is a symptom of renal failure but is not the main indication for dialysis. Elevated blood pressure (B) and elevated blood calcium (C) are not direct indications for dialysis in the context of acute renal failure.