HESI RN
HESI Medical Surgical Test Bank
1. Which of the following lab results is most indicative of dehydration?
- A. Low sodium levels.
- B. Elevated creatinine levels.
- C. Low potassium levels.
- D. High blood glucose levels.
Correct answer: B
Rationale: Elevated creatinine levels are indicative of dehydration because when the body is dehydrated, the kidneys concentrate urine to preserve fluid, leading to higher levels of creatinine. Low sodium levels (Choice A) can be seen in conditions like hyponatremia but are not specific to dehydration. Low potassium levels (Choice C) are more commonly associated with conditions like hypokalemia. High blood glucose levels (Choice D) are typically seen in diabetes and are not specific indicators of dehydration.
2. A client with atrial fibrillation is receiving digoxin (Lanoxin) and warfarin (Coumadin). Which assessment finding should the nurse report to the healthcare provider immediately?
- A. Heart rate of 58 beats per minute
- B. Presence of a new murmur
- C. INR of 2.5
- D. Blood pressure of 110/70 mmHg
Correct answer: B
Rationale: The correct answer is B. The presence of a new murmur in a client with atrial fibrillation may indicate a valvular problem or other complications, requiring immediate reporting. A heart rate of 58 beats per minute is within the normal range for some individuals with atrial fibrillation, so it is not an immediate concern. An INR of 2.5 is within the therapeutic range for a client on warfarin, indicating appropriate anticoagulation. A blood pressure of 110/70 mmHg is also within the normal range and does not pose an immediate threat to the client's health.
3. The patient expects that a type 1 diabetic may receive ____ of their morning dose of insulin preoperatively:
- A. 10-20%.
- B. 25-40%.
- C. 50-60%.
- D. 85-90%.
Correct answer: B
Rationale: It is common practice to administer 25-40% of the morning dose of insulin preoperatively to prevent hypoglycemia during surgery. Giving a lower percentage (A) may not provide sufficient glycemic control, while higher percentages (C, D) can increase the risk of hypoglycemia during the surgical procedure.
4. Which of the following is not found in a prokaryotic cell?
- A. Plasma membrane
- B. Cytoplasm
- C. Nucleus
- D. Ribosomes
Correct answer: C
Rationale: The correct answer is C, 'Nucleus.' Prokaryotic cells do not have a defined nucleus, unlike eukaryotic cells. The plasma membrane, cytoplasm, and ribosomes are all components found in prokaryotic cells. The plasma membrane surrounds the cell and regulates what enters and exits, the cytoplasm is the gel-like substance that fills the cell, and ribosomes are responsible for protein synthesis.
5. A client is receiving intravenous heparin therapy. What medication should the nurse have available in the event of an overdose of heparin?
- A. Protamine
- B. Amicar
- C. Imferon
- D. Diltiazem
Correct answer: A
Rationale: Protamine is the antidote for heparin overdose. It works by neutralizing the anticoagulant effects of heparin. Amicar (Choice B) is used to treat excessive bleeding due to elevated fibrinolytic activity and is not the antidote for heparin overdose. Imferon (Choice C) is an iron supplement and is not indicated for heparin overdose. Diltiazem (Choice D) is a calcium channel blocker used to treat hypertension and angina, not for heparin overdose. Therefore, the correct choice is Protamine (Choice A).