A multigravida at 39 weeks gestation is in active labor. During vaginal examination, the nurse palpates the fetal head at -1 station with the sagittal suture running anteroposterior and the posterior fontanelle easily palpated anteriorly. What fetal position does this assessment indicate?

Posterior fontanelle palpated anteriorly indicates an anterior position; sagittal suture anteroposterior confirms LOA. In posterior positions (LOP/ROP), the anterior fontanelle is palpated anteriorly.

Clinical Judgment
This question assesses fetal position, a Core Concept for determining the baby's location during labor. The key is connecting two Critical Cues from the vaginal examination: 1) the posterior fontanelle is easily palpated anteriorly, and 2) the sagittal suture runs in an anteroposterior direction. A posterior fontanelle located anteriorly means the fetal occiput is facing the anterior part of the maternal pelvis. At this point, an occiput anterior (OA) position is confirmed. Next, you must determine whether the occiput is on the left or right side. With the sagittal suture running anteroposteriorly and the posterior fontanelle anterior, the direction (left or right) where the posterior fontanelle is palpated indicates the occiput's location. The problem only states "the posterior fontanelle was easily palpated anteriorly" without specifying left or right, but LOA is the most common normal position and best fits these findings. If it were ROA, the posterior fontanelle would have been palpated on the right anterior side.

Memory Tip
Fetal position memory aid: Occiput + Side + Anterior/Posterior/Transverse. In other words, think in OSA order. It describes which side (S) the occiput (O) is on and whether it faces anterior (A), posterior (P), or transverse (T). LOA = Left side, Occiput, Anterior.

KR vs US
In Korea, fetal position is often expressed using Chinese characters, such as '좌전정횡위(LOT)', but on the NGN/NCLEX, English abbreviations (e.g., LOA, ROP) are used. Additionally, while ultrasound is often used as an adjunct in Korean practice to assess labor progress in primiparas, NCLEX scenarios frequently require you to make judgments based on the nurse's direct physical examination (vaginal exam) findings.

Clinical Practice Guide Sequence for assessing fetal position during vaginal examination in labor: 1) Identify the fontanelle: anterior fontanelle (diamond-shaped) vs. posterior fontanelle (triangular). 2) Identify the direction of the sagittal suture. 3) Deduce the direction of the occiput: The occiput is located on the opposite side of where the posterior fontanelle is palpated. (Example: If the posterior fontanelle is palpated on the left anterior side → the occiput is on the right posterior side? No! Since the posterior fontanelle is itself on the occiput, the direction where the posterior fontanelle is palpated is the direction of the occiput. In LOA, the posterior fontanelle is palpated in the left anterior direction). Caution In SATA (Select All That Apply) questions, this may appear as "Findings confirming fetal occiput anterior (OA) position." The correct answers are "The posterior fontanelle is palpated anteriorly" and "The sagittal suture is in the anteroposterior direction." "The anterior fontanelle is palpated" is a sign of occiput posterior (OP) position, so it is a distractor.