A nurse is performing a physical examination of a term newborn upon admission to the nursery.
In which order should the nurse perform the following assessments?

Abruptio Placentae: Typically does not cause increased contraction frequency; contractions may be normal or decreased due to uterine irritation or pain.

Uterine Tachysystole: Characterized by more than 5 contractions in 10 minutes averaged over 30 minutes, indicating excessive contraction frequency, which can reduce uteroplacental perfusion.

Uterine Tone
Abruptio Placentae: The uterus often becomes firm, rigid, and tender due to bleeding and inflammation caused by premature placental separation, increasing baseline uterine tone.

Uterine Tachysystole: Uterine tone is elevated because contractions are prolonged and close together, causing the uterus to remain tense with insufficient relaxation.

Pain Report
Abruptio Placentae: Patients usually report sharp, severe abdominal or back pain due to the sudden placental detachment and uterine irritation.

Uterine Tachysystole: Pain may be present but is typically related to frequent contractions rather than sharp, localized pain.

FHR Pattern
Abruptio Placentae: Commonly causes fetal heart rate abnormalities like late decelerations, bradycardia, or absent variability due to fetal hypoxia from compromised placental perfusion.

Uterine Tachysystole: Can cause decreased fetal heart rate variability and late decelerations because frequent contractions reduce oxygen delivery during inadequate relaxation.

Choice A rationale

A sudden gush of amniotic fluid typically indicates rupture of membranes (ROM), which can be spontaneous or induced. While ROM can occur during labor, it is not a direct indicator of uterine rupture, which is a catastrophic event involving the tearing of the uterine wall and often presents with different clinical signs.

Choice B rationale

Hypotension with a blood pressure of 85/40 mm Hg is a critical finding suggesting hypovolemic shock, often due to internal hemorrhage, which is a common consequence of uterine rupture. The sudden loss of maternal blood into the abdominal cavity leads to a rapid decrease in circulating blood volume and subsequent systemic hypotension.

Choice C rationale

Severe bradypnea with a respiratory rate of 10/min is not a primary indicator of uterine rupture. Bradypnea often suggests central nervous system depression, possibly from medication effects or other neurological events, but is not a direct physiological response to the acute blood loss and pain associated with a uterine tear.

Choice D rationale

Palpation of the fetal presenting part in the cervical os is a normal finding during labor progression as the fetus descends. However, if the presenting part is palpated higher or outside the uterus, it can indicate expulsion of the fetus into the abdominal cavity following a complete uterine rupture, which is an abnormal and emergent finding.