HESI LPN
Adult Health 2 Exam 1
1. The nurse plans to evaluate the effectiveness of several drugs administered by different routes. Arrange the routes of administration from fastest to slowest rate of absorption. 1. Intravenous 2. Sublingual 3. Intramuscular 4. Subcutaneous
- A. 1,2,3,4
- B. 4,3,2,1
- C. 2,4,3,1
- D. 3,4,1,2
Correct answer: A
Rationale: The correct order of routes of administration from fastest to slowest rate of absorption is 1. Intravenous, 2. Sublingual, 3. Intramuscular, 4. Subcutaneous. Intravenous administration provides the fastest absorption as the drug is directly injected into the bloodstream. Sublingual administration allows for rapid absorption through the mucous membranes under the tongue. Intramuscular administration has a slower absorption rate as the drug is injected into the muscle tissue. Subcutaneous administration is the slowest as the drug is injected into the fatty tissue under the skin, leading to a slower absorption compared to the other routes.
2. What is the homeostatic cellular transport mechanism that moves water from a hypotonic to a hypertonic fluid space?
- A. Filtration
- B. Diffusion
- C. Osmosis
- D. Active transport
Correct answer: C
Rationale: The correct answer is C: Osmosis. Osmosis is the homeostatic cellular transport mechanism that moves water from a hypotonic to a hypertonic fluid space to maintain cellular balance. In osmosis, water moves across a semi-permeable membrane from an area of low solute concentration (hypotonic) to an area of high solute concentration (hypertonic). This process helps regulate the water content inside cells. Choices A, B, and D are incorrect. Filtration involves the movement of solutes and solvents through a membrane due to a pressure difference, diffusion is the movement of solutes from an area of high concentration to low concentration, and active transport requires energy to move substances against their concentration gradient.
3. The healthcare provider reviews the laboratory results of a client whose serum pH is 7.38. What does this value imply about the client's homeostasis?
- A. Alkalosis
- B. Acidosis
- C. Normal serum pH
- D. Incompatible with life
Correct answer: C
Rationale: A pH of 7.38 falls within the normal range (7.35-7.45), indicating that the client’s acid-base balance is adequately maintained. Choices A and B are incorrect as alkalosis and acidosis refer to abnormal pH levels. Choice D is incorrect as a pH of 7.38 within the normal range is compatible with life.
4. A client is receiving a blood transfusion and reports chills and back pain. What is the nurse's priority action?
- A. Continue the transfusion at a slower rate
- B. Administer an antipyretic
- C. Stop the transfusion immediately
- D. Notify the healthcare provider
Correct answer: C
Rationale: When a client receiving a blood transfusion reports chills and back pain, it indicates a possible transfusion reaction. The nurse's priority action is to stop the transfusion immediately. Continuing the transfusion at a slower rate (Choice A) can exacerbate the reaction. Administering an antipyretic (Choice B) may help with fever but does not address the underlying issue of a transfusion reaction. Notifying the healthcare provider (Choice D) is important but should not delay the immediate action of stopping the transfusion to ensure the client's safety.
5. The nurse is palpating the right upper hypochondriac region of the abdomen of a client. What organ lies underneath this area?
- A. Duodenum
- B. Gastric pylorus
- C. Liver
- D. Spleen
Correct answer: C
Rationale: The correct answer is C: Liver. The liver is located in the right upper hypochondriac region of the abdomen. The duodenum (Choice A) is located in the right upper quadrant but not directly underneath the right upper hypochondriac region. The gastric pylorus (Choice B) is part of the stomach and is located more centrally in the abdomen. The spleen (Choice D) is located in the left upper quadrant of the abdomen, not underneath the right upper hypochondriac region.
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