Included in the definition of tachysystole is:
Contraction duration of less than 40 seconds.
Contraction frequency of greater than 5 in 10 minutes.
Contraction intensity of less than 80 mm Hg.
Resting tone of less than 18 mm Hg.
The Correct Answer is B
Choice A rationale
Contraction duration less than 40 seconds doesn't define tachysystole. Tachysystole focuses on frequency, not duration, of contractions over a specific time frame.
Choice B rationale
Contraction frequency of more than 5 in 10 minutes defines tachysystole. This frequency indicates excessive uterine activity, requiring intervention to prevent fetal distress.
Choice C rationale
Contraction intensity less than 80 mm Hg does not define tachysystole. Intensity relates to contraction strength, but tachysystole is about frequency exceeding the normal range.
Choice D rationale
Resting tone less than 18 mm Hg isn't part of tachysystole's definition. Tachysystole pertains to contraction frequency, not resting tone, which measures uterine relaxation between contractions.
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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 C
Explanation
Choice A rationale
The hemoglobin level of 11.6 g/dL is within the normal range for a pregnant woman. While placenta previa requires monitoring, it is not immediately life-threatening.
Choice B rationale
Type 2 diabetes mellitus requires regular monitoring and management, but a single fasting blood glucose level does not indicate an immediate emergency unless it is extremely high or low.
Choice C rationale
Partial placental abruption can lead to significant complications for both the mother and fetus, including hemorrhage and fetal distress, making it the priority for immediate assessment.
Choice D rationale
An Rh-negative status and a recent cerclage placement are important for ongoing monitoring but do not present an immediate life-threatening condition that demands the first assessment.