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Contractions that resolve with hydration and rest represent false labor, often termed Braxton Hicks contractions. True preterm labor contractions persist and intensify despite supportive measures like oral rehydration and lateral recumbent positioning, which reduce uterine irritability caused by dehydration.

Irregular contractions occurring at wide intervals without back discomfort are characteristic of false labor. True labor contractions are regular, increase in frequency and intensity, and often cause discomfort that radiates from the back to the fundus due to pacemaker activity in the cornua.

Mild cramping that subsides after voiding and resting in the lateral position indicates transient uterine irritability rather than labor. Emptying a distended bladder removes mechanical pressure on the uterus, which resolves spurious contractions without causing cervical remodeling.

This choice is incorrect because birth before 32 weeks is too broad, and the range of 32 to 34 weeks actually represents moderate preterm birth. These definitions do not align with standard neonatal classification systems.

This choice is incorrect because these 2 terms represent distinct clinical categories with different prognoses. They do not share 1 category of less than 30 weeks, which violates standard gestational age classifications.

This choice is incorrect because preterm classifications are based strictly on gestational age. They are not defined by clinical status at birth, such as the need for resuscitation or the ability to sustain independent respiration.

A cervical length of 4.2 cm is well within the normal physiological range of 3.0 to 5.0 cm during the third trimester. A closed internal os indicates structural integrity, representing a very low risk of spontaneous preterm birth and confirming cervical competence.

A measurement of 3.5 cm represents a normal, reassuring cervical length that indicates adequate structural support. The absence of funneling confirms that the internal os remains stable, indicating a low probability of premature rupture of membranes or imminent delivery.

A cervical length of 3.0 cm is at the lower limit of normal but remains clinically reassuring. A thick, closed cervix indicates that no effacement or dilation has initiated, suggesting a low risk of cervical insufficiency and preterm labor.

A cervical dilation of 4 cm indicates active preterm labor rather than threatened preterm labor. True preterm labor involves progressive cervical effacement and dilation, which typically leads to imminent delivery within a short timeframe, requiring immediate tocolytic therapy.

Ruptured membranes prior to 37 weeks of gestation define preterm premature rupture of membranes, not threatened preterm labor. This condition significantly increases the risk of intra-amniotic infection and requires distinct management strategies to prevent maternal and fetal sepsis.

The completion of corticosteroids and tocolytics represents a therapeutic intervention rather than a diagnostic definition. These treatments are administered to accelerate fetal lung maturity and delay delivery, but they do not define the clinical diagnosis itself.

This statement is incorrect because a prior preterm birth is the most significant risk factor for recurrence. Ignoring this history neglects critical preventive strategies, such as cervical length screening, which are essential to prevent cervical insufficiency and subsequent preterm labor.

This statement is incorrect because even 1 prior spontaneous preterm birth significantly elevates the risk of recurrence. While multiple preterm births further compound the risk, clinical protocols for risk stratification and preventive interventions are initiated after just 1 occurrence.

This statement is incorrect because preterm births occurring before 34 weeks, especially early preterm births like at 30 weeks, carry an even higher risk of recurrence. The gestational age of the prior delivery is inversely proportional to the recurrence risk of preterm delivery.

This frequency is insufficient to meet the diagnostic criteria for preterm labor. 2 contractions in 60 minutes represent a hypoactive uterine pattern that does not generate enough intrauterine pressure to induce myometrial remodeling or subsequent effacement of the cervix.

Irregular contractions of mild intensity do not represent true labor. Preterm labor requires regular, coordinated contractions that lead to cervical change, whereas irregular contractions are typical of physiological uterine activity, such as Braxton-Hicks contractions, which do not cause cervical dilation.

Contractions that resolve with position changes or hydration are indicative of false labor. True preterm labor contractions are persistent, regular, and do not subside with rest, indicating active pacemaker activity within the myometrium that requires clinical intervention.

This statement is clinically inaccurate because late preterm neonates demonstrate higher rates of hypoglycemia and hyperbilirubinemia. These infants lack the physiological reserves of term infants, leading to increased hospital readmission rates and potential long-term neurodevelopmental complications during the neonatal period.

This assertion is false because late preterm birth is defined by gestational age, not by the necessity of surgical procedures. Many infants in this category are born vaginally and require only supportive nursing care, though they remain at higher risk for metabolic instability.

This classification is incorrect as extremely preterm infants are defined as those born before 28 weeks of gestation. Late preterm infants typically do not require prolonged mechanical ventilation, as their pulmonary development is significantly more advanced than that of extremely preterm neonates.