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The principal risk factor predictive of preterm birth is:

A.

History of preterm birth.

B.

Low prepregnancy weight.

C.

Smoking during pregnancy.

D.

Obesity.

Answer and Explanation

The Correct Answer is A

Choice A rationale

History of preterm birth is the principal risk factor for predicting preterm birth. Previous preterm births significantly increase the likelihood of subsequent preterm deliveries due to

underlying etiological factors.

 

Choice B rationale

Low prepregnancy weight is a risk factor but not as significant as a history of preterm birth. It can contribute to complications in pregnancy but does not have the same predictive value.

 

Choice C rationale

Smoking during pregnancy increases the risk of preterm birth but is not the principal risk factor. It is a modifiable behavior that contributes to poor pregnancy outcomes.

 

Choice D rationale

Obesity can impact pregnancy outcomes but is not the principal risk factor for preterm birth. It is associated with other complications rather than directly predicting preterm delivery.


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View Related questions

Correct Answer is B

Explanation

Choice A rationale

Administering oxytocin during shoulder dystocia can exacerbate the problem by increasing uterine contractions, making it harder to deliver the baby's shoulder.

Choice B rationale

Flexing the client's thighs sharply toward her abdomen, known as the McRoberts maneuver, helps to widen the pelvis and can often resolve shoulder dystocia by changing the angle of the pelvic bones.

Choice C rationale

While applying oxygen is a standard practice to improve maternal and fetal oxygenation, it does not specifically address shoulder dystocia and is not a primary intervention.

Choice D rationale

Applying downward pressure on the fundus is contraindicated as it can worsen shoulder dystocia by further impacting the shoulder against the pelvic bone.

Correct Answer is B

Explanation

Choice A rationale

While infection prevention is vital, ensuring breathing function is more critical after ASP.

Choice B rationale

ASP affects the respiratory system severely; thus, restoring normal breathing is a primary goal.

Choice C rationale

Gastrointestinal function is less immediately affected by ASP compared to respiratory issues.

Choice D rationale

Voiding without pain is important, but respiratory stability takes precedence.

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