The stomach contractions, which move the chyme from near the periphery of the stomach toward the pyloric sphincter, are called
- A. the pyloric pump.
- B. peristaltic waves.
- C. mixing waves.
- D. mass movements.
Correct Answer: C
Rationale: The correct answer is C: mixing waves. Mixing waves are the stomach contractions that help mix the chyme near the periphery of the stomach and move it towards the pyloric sphincter for further digestion. Peristaltic waves (B) are rhythmic contractions that propel food through the digestive system, not specifically in the stomach. The pyloric pump (A) is not a recognized term in gastrointestinal physiology. Mass movements (D) refer to contractions in the large intestine that move feces towards the rectum, not in the stomach.
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A male client with a recent history of rectal bleeding is being prepared for a colonoscopy. How should the nurse position the client for this test initially?
- A. Lying on the right side with legs straight
- B. Lying on the left side with knees bent
- C. Prone with the torso elevated
- D. Bent over with hands touching the floor
Correct Answer: B
Rationale: The correct answer is B: Lying on the left side with knees bent. This position allows for better visualization and access to the colon during the colonoscopy procedure. By lying on the left side, the client's colon is in a more optimal position for the scope to navigate through the colon. Additionally, bending the knees helps to relax the abdominal muscles and make the procedure more comfortable for the client.
Incorrect choices:
A: Lying on the right side with legs straight - This position does not provide optimal access to the colon and may make the procedure more difficult.
C: Prone with the torso elevated - This position is not suitable for a colonoscopy as it does not allow for proper access to the colon.
D: Bent over with hands touching the floor - This position is not recommended for a colonoscopy as it is not conducive to the procedure and may cause discomfort for the client.
Which of the following is a major site of nutrient absorption?
- A. duodenum
- B. jejunum
- C. ileum
- D. colon
Correct Answer: B
Rationale: The correct answer is B: jejunum. The jejunum is a major site of nutrient absorption in the small intestine due to its extensive surface area and presence of villi and microvilli that facilitate absorption of nutrients like carbohydrates, proteins, and fats. The duodenum primarily functions in digestion, the ileum mainly absorbs vitamin B12 and bile salts, and the colon absorbs water and electrolytes. Therefore, the jejunum is the correct choice for being a major site of nutrient absorption.
Which of the following is the primary function of the small intestine?
- A. digestion of fats
- B. digestion of carbohydrates
- C. absorption of nutrients
- D. storage of bile
Correct Answer: C
Rationale: The correct answer is C: absorption of nutrients. The small intestine is responsible for absorbing nutrients from digested food into the bloodstream for distribution to the body's cells. It has specialized structures like villi and microvilli to maximize absorption surface area. Choice A is incorrect because while the small intestine does play a role in digesting fats, it is not its primary function. Choice B is incorrect because the digestion of carbohydrates primarily occurs in the mouth and stomach. Choice D is incorrect as the small intestine does not store bile, but rather receives it from the liver and gallbladder to aid in digestion.
The nurse is teaching a patient with diabetes about foot care. Which statement by the patient indicates that further teaching is needed?
- A. "I should wash my feet daily with warm water and mild soap."
- B. "I should inspect my feet daily for blisters, redness, or cuts."
- C. "I can use heating pads to warm my feet if they are cold."
- D. "I should trim my toenails straight across."
Correct Answer: C
Rationale: Correct Answer: C - "I can use heating pads to warm my feet if they are cold."
Rationale:
1. Using heating pads can cause burns or injuries due to reduced sensation in diabetic feet.
2. Patients with diabetes should avoid direct heat on their feet.
3. Optimal foot care for diabetics includes inspecting feet, washing with mild soap, and trimming nails correctly.
Summary:
A: Correct - Washing feet daily is recommended.
B: Correct - Inspecting feet daily is essential for early detection of issues.
C: Incorrect - Using heating pads can be harmful to diabetic feet.
D: Correct - Trimming toenails straight across is an appropriate practice.
Priority Decision: A patient treated for vomiting is to begin oral intake when the symptoms have subside To promote rehydration
- A. the nurse plans to administer which fluid first?
- B. Water
- C. Hot tea
- D. Gatorade
Correct Answer: A
Rationale: Step 1: The priority is to administer fluids to rehydrate the patient.
Step 2: Intravenous fluids are not mentioned, so the nurse should start with oral fluids.
Step 3: Option A is the most appropriate choice as it addresses the need for fluid intake to promote rehydration.
Step 4: Water (Option B) lacks electrolytes that aid in rehydration.
Step 5: Hot tea (Option C) may irritate the stomach and not provide adequate hydration.
Step 6: Gatorade (Option D) contains electrolytes but may be too heavy for initial rehydration.