HESI RN
Leadership and Management HESI
1. A male client with a tentative diagnosis of hyperosmolar hyperglycemic nonketotic syndrome (HHNS) has a history of type 2 diabetes that is being controlled with an oral diabetic agent, tolazamide (Tolinase). Which of the following is the most important laboratory test for confirming this disorder?
- A. Serum potassium level
- B. Serum sodium level
- C. Arterial blood gas (ABG) values
- D. Serum osmolarity
Correct answer: D
Rationale: Serum osmolarity is the most important laboratory test for confirming hyperosmolar hyperglycemic nonketotic syndrome (HHNS). HHNS is characterized by severe hyperglycemia and dehydration without ketoacidosis. Elevated serum osmolarity indicates increased solute concentration in the blood, which is a hallmark of HHNS. Serum potassium level (Choice A) is important in conditions like diabetic ketoacidosis rather than HHNS. Serum sodium level (Choice B) may be affected in HHNS but is not the primary test for confirming the disorder. Arterial blood gas (ABG) values (Choice C) are more useful in assessing acid-base status, which is not the primary concern in HHNS.
2. Why is glucose an important molecule in a cell?
- A. Extraction of energy
- B. Synthesis of protein
- C. Building of genetic material
- D. Formation of cell membranes
Correct answer: A
Rationale: Glucose is a crucial molecule in cells because it serves as the primary source of energy through cellular respiration. Choice B, the synthesis of protein, is incorrect because proteins are typically synthesized from amino acids, not glucose. Choice C, the building of genetic material, is incorrect because genetic material, such as DNA and RNA, is not directly built from glucose. Choice D, the formation of cell membranes, is also incorrect as cell membranes are primarily composed of lipids and proteins, not glucose.
3. A nurse caring for a client with hypocalcemia would expect to note which of the following changes on the electrocardiogram?
- A. Widened T wave
- B. Prominent U wave
- C. Prolonged QT interval
- D. Shortened ST segment
Correct answer: C
Rationale: In hypocalcemia, a decreased level of calcium can lead to a prolonged QT interval on the ECG due to its role in myocardial repolarization. A widened T wave (Choice A) is typically seen in hyperkalemia. A prominent U wave (Choice B) is associated with hypokalemia. A shortened ST segment (Choice D) is not a typical ECG finding in hypocalcemia.
4. A client with Cushing's syndrome is being assessed by the nurse. Which of the following clinical manifestations is consistent with this condition?
- A. Moon face
- B. Weight loss
- C. Hyperpigmentation
- D. Hypotension
Correct answer: A
Rationale: The correct clinical manifestation consistent with Cushing's syndrome is a 'moon face.' Cushing's syndrome is characterized by fat redistribution, leading to the round and full appearance of the face known as a moon face. Choice B, weight loss, is not common in Cushing's syndrome as patients often experience weight gain. Choice C, hyperpigmentation, is more indicative of Addison's disease, not Cushing's syndrome. Choice D, hypotension, is not typically associated with Cushing's syndrome which often presents with hypertension due to excess cortisol.
5. The client has syndrome of inappropriate antidiuretic hormone (SIADH). Which intervention is most appropriate?
- A. Encourage increased fluid intake
- B. Administer hypertonic saline
- C. Monitor for signs of dehydration
- D. Restrict oral fluids
Correct answer: D
Rationale: The correct intervention for a client with syndrome of inappropriate antidiuretic hormone (SIADH) is to restrict oral fluids. This is because SIADH leads to excessive production of antidiuretic hormone, causing water retention and dilutional hyponatremia. By restricting oral fluids, the nurse helps prevent further water retention and imbalance of electrolytes. Encouraging increased fluid intake (Choice A) would exacerbate the condition by further increasing fluid retention. Administering hypertonic saline (Choice B) is not the primary treatment for SIADH, as it may worsen the imbalance. Monitoring for signs of dehydration (Choice C) is not appropriate since SIADH leads to water retention, not dehydration.
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