After teaching a pregnant woman about the hormones produced by the placenta, the nurse determines that the teaching was successful when the woman identifies which hormone produced as being the basis for pregnancy tests?

The correct answer is: a. Hyperbilirubinemia.

Choice A: Hyperbilirubinemia

Reason: Hyperbilirubinemia in newborns is often caused by the increased breakdown of red blood cells, which have a shorter lifespan in neonates. This breakdown produces bilirubin, a yellow pigment that can accumulate in the blood, leading to jaundice. The liver of a newborn is not fully mature and may not be able to process and excrete bilirubin efficiently, resulting in hyperbilirubinemia.

Choice B: Respiratory Distress Syndrome

Reason: Respiratory Distress Syndrome (RDS) is primarily caused by a deficiency of surfactant in the lungs, which is more common in premature infants. It is not directly related to the lifespan of red blood cells. Symptoms include rapid, shallow breathing and a bluish color due to lack of oxygen.

Choice C: Polycythemia

Reason: Polycythemia is characterized by an abnormally high concentration of red blood cells. It is often due to factors like delayed cord clamping or maternal diabetes, rather than the decreased lifespan of red blood cells. Polycythemia can lead to increased blood viscosity and complications such as sluggish blood flow.

Choice D: Transient Tachypnea

Reason: Transient Tachypnea of the Newborn (TTN) is a respiratory condition caused by delayed clearance of fetal lung fluid. It typically resolves within a few days and is not related to the lifespan of red blood cells. Symptoms include rapid breathing and grunting.

Choice A reason:

Rupture of the membranes is not a reliable sign of true labor, as it can occur before or during labor, or be artificially induced by the provider. • Choice B reason:

Patterns of contractions can vary depending on the stage and phase of labor, and can also be influenced by factors such as hydration, activity, and medication. Contractions alone do not indicate true labor unless they are accompanied by cervical changes. • Choice C reason:

Changes in the cervix, such as effacement (thinning) and dilation (opening), are the most accurate indication of true labor. Cervical changes are caused by the pressure of the presenting part and the force of the contractions. The nurse should assess the cervix periodically to determine the progress of labor. • Choice D reason:

The station of the presenting part refers to the relationship of the fetal head to the maternal ischial spines, which are bony landmarks in the pelvis. The station can range from -5 (high) to +5 (low), with 0 being at the level of the ischial spines. Station does not indicate true labor, as it can vary depending on the parity, pelvic shape, and fetal position of the client.