The nursing instructor is preparing to illustrate the various changes between the nonpregnant and pregnant female bodies.
The instructor should point out that the blood volume in the pregnant woman can increase by what percentage?
20% to 25%.
40% to 45%.
50% to 55%.
30% to 35%.
The Correct Answer is B
Blood volume increases significantly within the first few weeks of gestation and increases progressively throughout the pregnancy.
The total blood volume increase varies from 20% to 100% above prepregnancy levels, usually close to 45%1.
Choice A is incorrect because the increase is usually close to 45%, not 20% to 25%.
Choice C is incorrect because the increase is usually close to 45%, not 50% to 55%.
Choice D is incorrect because the increase is usually close to 45%, not 30% to 35%.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Staphylococcus aureus is the most common cause of acute osteomyelitis.
Osteomyelitis is an infection of the bone that can be caused by a variety of microorganisms, including bacteria, fungi, and mycobacteria.
Staphylococcus aureus is present in more than 50% of patients with osteomyelitis that results from contiguous spread from adjacent infected tissue or open wounds.
Choice B is not an answer because Pseudomonas aeruginosa is a less common cause of osteomyelitis and is more commonly seen in injection drug users.
Choice C is not an answer because Streptococcus B is not a common cause of osteomyelitis.
Choice D is not an answer because Escherichia coli is not a common cause of osteomyelitis.
Correct Answer is D
Explanation
Difficulty climbing stairs is an early sign of muscular dystrophy.
This is because the condition causes progressive muscle weakness, which can make it difficult for the child to perform physical activities that require muscle strength.
Choice A is not the best answer because high fevers and tiredness are not specific to muscular dystrophy and can be caused by many other conditions.
Choice B is not the best answer because muscular dystrophy causes muscle weakness, not increased muscle strength.
Choice C is not the best answer because respiratory infections and obesity are not specific to muscular dystrophy and can be caused by many other conditions.
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