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 A
Explanation
Choice A rationale
Massaging the fundus can help contract the uterus and reduce bleeding. Ensuring IV access is crucial for administering medications rapidly. Methylergonovine (Methergine) and oxytocin help stimulate uterine contractions and reduce postpartum hemorrhage, which can be life-threatening.
Choice B rationale
Administering pain medication might be necessary, but it doesn't address the immediate issue of uterine atony and hemorrhage. Surgical intervention is a last resort and should be prepared for only if medical management fails.
Choice C rationale
Reassessing vital signs and monitoring is important, but it doesn't provide an immediate solution to the bleeding and uterine atony. Immediate action to contract the uterus is crucial.
Choice D rationale
Contacting the attending physician is important, but immediate intervention to stop the bleeding and address uterine atony is critical to prevent further complications.
Correct Answer is A
Explanation
Choice A rationale
Methylergonovine (Methergine) is used to manage postpartum hemorrhage by stimulating uterine contractions. It is especially useful in cases like this where rapid uterine tone is needed.
Choice B rationale
Magnesium sulfate is used to prevent seizures in preeclamptic patients, not to manage postpartum hemorrhage. This choice is incorrect in this context.
Choice C rationale
Carboprost-tromethamine (Hemabate) is also used for treating postpartum hemorrhage but is typically a secondary option to methylergonovine and may have more side effects.
Choice D rationale
Fresh frozen plasma (FFP) is used to replace clotting factors in cases of coagulopathy, not as a primary intervention for postpartum hemorrhage in this patient.