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All of the following are true regarding proximal renal tubular acidosis, except
- A. Growth failure in the first few years of life is a characteristic presentation
- B. Urine pH cannot be reduced to < 5.5
- C. It is usually a component of Fanconi syndrome
- D. Non-anion gap metabolic acidosis is common
Correct Answer: D
Rationale: Proximal renal tubular acidosis is associated with a normal anion gap metabolic acidosis, not a non-anion gap metabolic acidosis.
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Urinary tract infection:
- A. Usually leads to vesico-ureteric reflux
- B. Is more common in boys than girls under a year of age
- C. In boys,is most commonly caused by Proteus mirabilis
- D. Is associated with constipation
Correct Answer: D
Rationale: Urinary tract infections (UTIs) are often associated with constipation in children, as stool retention can increase the risk of bacterial colonization in the urinary tract.
The following are true about water excretion:
- A. It is influenced by the proximal tubule
- B. It is influenced by vasopressin
- C. It depends on erythropoietin
- D. It is influenced by the ascending limb of the loop of Henle
Correct Answer: B
Rationale: It is influenced by vasopressin: Vasopressin (ADH) regulates water reabsorption in the kidneys, primarily by acting on the collecting ducts, enhancing water retention in response to dehydration.
The pH of urine:
- A. Is a useful indicator of the acid/base balance of blood
- B. Rises on a vegetarian diet
- C. Is determined by the concentration of ammonium
- D. Is lower than 5.5 in renal tubular acidosis
Correct Answer: A
Rationale: Urine pH reflects blood acid/base balance. A vegetarian diet typically raises urine pH, and renal tubular acidosis causes a higher pH, not lower.
A client tells the nurse that her biopsy results indicate that the cancer cells are well-differentiated. How should the nurse respond?
- A. Ask the client if the healthcare provider has given her any information about the classification of her cancer
- B. Tell the client that well-differentiated cancer cells usually have a poor prognosis.
- C. Reassure the client that the cancer is not serious.
- D. Encourage the client to seek a second opinion for confirmation of the diagnosis.
Correct Answer: A
Rationale: Well-differentiated cancer cells typically indicate a slower-growing tumor. Clarifying the client's understanding ensures accurate communication and emotional support.
The most common coronary artery anomaly in Tetralogy of Fallot is
- A. Left anterior descending artery from right aortic sinus
- B. Single coronary artery from right aortic sinus
- C. Single coronary artery from left aortic sinus
- D. Left circumflex coronary artery from right aortic sinus
Correct Answer: A
Rationale: The most common coronary artery anomaly in Tetralogy of Fallot is the left anterior descending artery arising from the right aortic sinus.