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
PTB is the leading cause of neonatal mortality and for antenatal hospitalization. This is accurate because preterm birth (PTB) is a significant cause of infant mortality and often
requires extended hospital stays for the management of complications.
Choice B rationale
PTBs result in increased numbers of neonatal and infant deaths and long-term neurological impairment. This is accurate because preterm births are associated with higher rates of
mortality and long-term health issues in infants.
Choice C rationale
PTL is defined as regular uterine contractions resulting in cervical changes before 37 weeks gestation. This is accurate because preterm labor (PTL) is indeed characterized by these
symptoms occurring before full-term pregnancy.
Choice D rationale
Average costs for premature/low birthweight infants are more than 10 times as high than for other newborns. This is accurate because medical care for premature and low
birthweight infants is significantly more expensive due to the need for specialized care and extended hospital stays.
Correct Answer is C
Explanation
Choice A rationale
Dexamethasone does not directly stop labor contractions; instead, it is used to enhance fetal lung maturity.
Choice B rationale
Dexamethasone is not for infection prevention; antibiotics are used for that purpose in cases of premature rupture of membranes.
Choice C rationale
Dexamethasone is administered to enhance fetal lung maturity, reducing the risk of respiratory distress syndrome in preterm infants.
Choice D rationale
Dexamethasone is not used for pain relief in preterm labor; other medications are prescribed for pain management.