Answer to Question 1B
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A High levels of mercury can harm the developing nervous system of the fetus. It is essential for the nurse to assist the patient in understanding the differences between numerous sources of this product. A pregnant patient can eat as much as 12 ounces a week of canned light tuna; however, canned white, albacore, or tuna steaks contain higher levels of mercury and should be limited to no more than 6 ounces per week.
B As a precaution, the pregnant patient should avoid eating all of these and the less common tilefish. Additional information on levels of mercury in commer-cially caught fish is available at
www.cfsan.fda.gov.
C This is a common misconception. Pregnant women and mothers of young child-ren should check with local advisories about the safety of fish caught by families and friends in nearby bodies of water. If no information is available, these fish sources should be avoided or limited to less than 6 ounces or be the only fish consumed that week.
D Commercially caught fish that are low in mercury include salmon, shrimp, pol-lock, or catfish. The pregnant patient may eat up to 12 ounces per week.
Answer to Question 2D
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A A nonreactive result means that the heart rate did not accelerate during fetal
movement.
B A positive result is not used with an NST. The CST uses positive as a result
term.
C A negative result is not used with an NST. The CST uses negative as a result
term.
D The NST is reactive (normal) when two or more FHR accelerations of at least 15
bpm (each with a duration of at least 15 seconds) occur in a 20-minute period.