A nurse is instructing a group of clients about nutrition. The nurse should include that which of the following is a trigger for the formation of vitamin D in the body?
Exposure to sunlight
Vitamin A depletion
Weight-bearing exercise
Calcium
The Correct Answer is A
A. Vitamin D is synthesized in the skin in response to exposure to ultraviolet B (UVB) rays from sunlight. When the skin is exposed to sunlight, specifically UVB rays, a chemical reaction occurs that converts 7- dehydrocholesterol (a substance found in the skin) into vitamin D3 (cholecalciferol). This form of vitamin D is then converted into its active form in the liver and kidneys.
B. This is not related to the formation of vitamin D. While vitamin A is important for overall health and vision, it does not play a role in the synthesis of vitamin D. Vitamin D formation is independent of vitamin A levels in the body.
C. This is not a direct trigger for vitamin D formation. While weight-bearing exercise is important for bone health and can improve overall musculoskeletal function, it does not influence the production of vitamin D in the body. The synthesis of vitamin D is primarily influenced by exposure to sunlight.
D. Calcium does not trigger vitamin D formation. While calcium and vitamin D are closely related, with vitamin D being essential for optimal calcium absorption, the presence of calcium does not affect the synthesis of vitamin D. Instead, calcium levels influence how much vitamin D is needed to ensure proper calcium absorption.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. While staying hydrated is important for overall health and can help with urinary tract infections, the recommended fluid intake for clients on ciprofloxacin is not specifically 1,000 milliliters. The more general advice is to drink plenty of fluids to help flush out bacteria from the urinary tract. The nurse should emphasize the importance of hydration but not specify a particular amount like 1,000 milliliters unless otherwise directed.
B. Ciprofloxacin should not be taken with antacids that contain calcium, magnesium, or aluminum because these can interfere with the absorption of the medication, reducing its effectiveness. Antacids should be taken at least 2 hours before or 6 hours after taking ciprofloxacin to avoid interactions.
C. Ciprofloxacin does not typically cause urine to turn dark orange. This side effect is more commonly associated with other medications, such as rifampin. The nurse should not expect ciprofloxacin to change the color of urine and should clarify any specific effects related to the medication.
D. Ciprofloxacin and other fluoroquinolones are associated with an increased risk of tendonitis and tendon rupture, particularly in the Achilles tendon. The nurse should instruct the client to report any new or worsening tendon pain, swelling, or discomfort immediately.
Correct Answer is B
Explanation
A. Urinary urgency refers to a sudden, compelling need to urinate, which may or may not be accompanied by frequency (i.e., the need to urinate often). Urgency alone does not necessarily indicate urinary incontinence but rather may suggest conditions like overactive bladder or urge incontinence. This finding is not the most characteristic sign of urinary incontinence but rather a symptom of specific types of incontinence or bladder conditions.
B. Loss of urine when laughing, coughing, or sneezing is indicative of stress urinary incontinence. This type of incontinence occurs when physical activities that increase abdominal pressure (such as coughing, sneezing, or laughing) lead to involuntary leakage of urine. It is a common and classic symptom of stress urinary incontinence.
C. Urinary hesitancy refers to difficulty starting the urine stream or a delay in beginning urination. This symptom is more commonly associated with obstructive urinary conditions or prostatic issues in males rather than incontinence. It does not typically characterize urinary incontinence, which is more related to involuntary leakage rather than difficulties initiating urination.
D. Hematuria is the presence of blood in the urine and can be a sign of various urological issues such as infections, stones, or tumors. It is not a typical finding associated with urinary incontinence, which involves involuntary leakage rather than the presence of blood.
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