HESI LPN
Adult Health 2 Exam 1
1. 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.
2. The nurse is providing discharge teaching to a client with newly diagnosed type 2 diabetes mellitus. Which instruction is most important to prevent complications?
- A. Monitor blood glucose levels regularly
- B. Maintain a low-fat diet
- C. Exercise regularly
- D. Take medication as prescribed
Correct answer: A
Rationale: Regular monitoring of blood glucose levels is crucial in managing diabetes and preventing complications. This allows the client and healthcare team to make timely adjustments to the treatment plan. While maintaining a low-fat diet, exercising regularly, and taking medication as prescribed are all important aspects of diabetes management, monitoring blood glucose levels takes precedence as it provides real-time information about the client's condition and helps prevent acute complications.
3. Which client will benefit most from the application of pneumatic compression devices to the lower extremities? The client who
- A. is immobile on prescribed bedrest.
- B. has pressure ulcers on several toes.
- C. has diminished pedal pulse volume.
- D. is confused and trying to climb out of bed.
Correct answer: A
Rationale: The correct answer is A. Pneumatic compression devices are most beneficial for immobile clients on prescribed bedrest to prevent deep vein thrombosis. Applying these devices helps in promoting circulation and preventing blood clots. Choices B, C, and D do not specifically relate to the primary indication for pneumatic compression devices, making them incorrect. Pressure ulcers, diminished pedal pulse volume, and confusion with climbing out of bed may require different interventions or treatments.
4. The nurse is caring for a client with an indwelling urinary catheter. What is the most important action to prevent catheter-associated urinary tract infections (CAUTI)?
- A. Perform hand hygiene before and after handling the catheter
- B. Change the catheter every 72 hours
- C. Apply antibiotic ointment at the insertion site
- D. Irrigate the catheter daily
Correct answer: A
Rationale: Performing hand hygiene before and after handling the catheter is crucial in preventing catheter-associated urinary tract infections (CAUTI). This practice helps minimize the risk of introducing harmful microorganisms into the urinary tract. Changing the catheter every 72 hours is not recommended unless clinically indicated as it can increase the risk of infection. Applying antibiotic ointment at the insertion site is not a standard practice and may contribute to antibiotic resistance. Irrigating the catheter daily is unnecessary and can introduce pathogens into the urinary tract, increasing the risk of infection.
5. The nurse is assessing an older resident with a history of Benign Prostatic Hypertrophy and identifies a distended bladder. What should the nurse do?
- A. Stand the client to void and run tap water within hearing distance before catheterizing
- B. Straight catheterize and if the residual urine volume is greater than 100 mL, clamp catheter
- C. Catheterize q2h and place in an indwelling catheter at the end of the prescribed 24hr period
- D. Catheterize with an indwelling catheter and if the residual volume is greater than 100 mL, inflate the balloon
Correct answer: D
Rationale: Prompt and appropriate management of urinary retention prevents complications like infection and bladder damage.
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