The nurse is presenting a conference on gene dominance. What does the nurse report as the percentage of children carrying the dominant gene if one parent has a dominant gene and the other parent does not?

25%

50%

75%

100%

Answer and Explanation

The Correct Answer is B

A. If only one parent carries the dominant gene, the probability of a child inheriting it is not 25%, as this would imply a recessive-recessive pairing.

B. In a scenario where one parent is heterozygous for a dominant gene and the other has two recessive alleles, each child has a 50% chance of inheriting the dominant gene. This outcome is based on Mendelian inheritance.

C. A 75% chance would occur in a scenario involving two heterozygous parents, which is not described here.

D. 100% inheritance occurs only when one parent is homozygous dominant, which is also not indicated in this case.

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Correct Answer is A

Explanation

A. Supine hypotension syndrome occurs when the gravid uterus compresses the inferior vena cava when the woman is lying flat on her back, leading to decreased venous return, lowered cardiac output, and a drop in blood pressure. This can cause dizziness, lightheadedness, and sometimes fainting. It is more common in the later stages of pregnancy, such as at 38 weeks.

B. Pregnancy-induced hypotension refers to a decrease in blood pressure due to pregnancy, but it typically does not occur specifically when lying on the back, and is not the main cause of dizziness when positioned in that way.

C. Anxiety can cause dizziness, but it is not the most likely cause of dizziness related to lying flat on the back, especially in late pregnancy.

D. Hypoglycemia can cause dizziness, but it is not typically triggered by a change in position like lying on the back, making it less likely in this scenario.

A. Avoid exaggerating lumbar curve B. Apply localized cold compress C. Use a cane when walking D. Wear low-heeled shoes to help maintain better posture E. Do not do exercises such as tailor sitting cross-legged, shoulder circling, and pelvic rocking

Correct Answer is ["A","D","E"]

Explanation

A. Avoid exaggerating the lumbar curve: This helps maintain better posture and reduces the strain on the lower back, preventing backaches.

B. Applying localized cold compress: Cold compresses may be helpful for acute injuries but are not a primary recommendation for preventing pregnancy-related backaches.

C. Using a cane when walking: This is not typically recommended unless there is a medical condition or injury. Most pregnant women can benefit from posture correction and strength exercises rather than reliance on a cane.

D. Wearing low-heeled shoes: This is recommended because low-heeled shoes provide better support and help maintain proper posture, reducing the risk of back pain during pregnancy.

E. Not doing exercises such as tailor sitting cross-legged, shoulder circling, and pelvic rocking: This statement is incorrect. These exercises, particularly pelvic rocking and shoulder circling, are actually helpful in preventing and alleviating back pain by improving flexibility and strengthening muscles. Avoiding such exercises may be detrimental.

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The nurse is presenting a conference on gene dominance. What does the nurse report as the percentage of children carrying the dominant gene if one parent has a dominant gene and the other parent does not?

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Naxlex Comprehensive Predictor Exams

A woman who is 38 weeks pregnant reports feeling dizzy when lying on her back. What does the nurse explain as the most likely cause of this symptom?

Correct Answer is A

Explanation

The nurse is teaching the patient how to prevent backaches during pregnancy. Which of the following self-care measures should the patient take? (Select All that Apply).

Correct Answer is ["A","D","E"]

Explanation

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