A nurse is reviewing ultrasound findings for a pregnant client at 20 weeks gestation. Which assessment finding would be most concerning and require immediate further evaluation?

Absence of quickening at 20 weeks is concerning as it may indicate fetal compromise, requiring immediate evaluation. Other findings (FHR 150 bpm, EFW 25th percentile, BPD 4.5 cm) are within normal limits.

Core Nursing Explanation Key Concept Analysis: This question assesses your ability to identify a critical abnormal finding in a routine prenatal ultrasound at 20 weeks gestation. The focus is on differentiating normal variations from signs of potential fetal compromise. At 20 weeks, the mother should be consistently feeling fetal movements (quickening). The absence of this is a Key Point! subjective but significant indicator that requires urgent assessment to rule out fetal distress or demise.

Answer Rationale: Key Point! Quickening (the mother's perception of fetal movement) typically begins between 16-20 weeks for a first pregnancy and may be felt earlier in subsequent pregnancies. By 20 weeks, the absence of perceived movement is a red flag. While an ultrasound can confirm fetal cardiac activity, the mother's report of no movement is a primary, concerning symptom that must be investigated immediately to assess fetal well-being. This aligns with the nursing priority of early detection of potential problems.

Distractor Analysis:
Watch out for confusion! Option ①: A fetal heart rate (FHR) of 150 beats per minute is within the normal range of 110-160 bpm. This is a reassuring finding.
Option ②: An estimated fetal weight (EFW) at the 25th percentile is within normal limits. Fetal growth is considered normal between the 10th and 90th percentiles. This indicates a smaller but healthy fetus, not necessarily a growth-restricted one.
Option ④: A biparietal diameter (BPD) of 4.5 cm is appropriate for 20 weeks gestation. The BPD is a standard measurement for dating a pregnancy, and this value is consistent with the gestational age.

Related Concepts: This scenario integrates knowledge of normal prenatal development, maternal assessment, and the use of diagnostic tools. The nurse's role involves patient education about fetal movement counts later in pregnancy and knowing when to escalate concerns based on maternal report, not just objective test data.

Concept Summary

Concept	Description	Nursing Implication
Quickening	Mother's first perception of fetal movement (16-20 wks).	Absence by 20 wks is a concerning finding requiring evaluation.
Fetal Heart Rate (FHR)	Normal range: 110-160 bpm.	A baseline for assessing fetal well-being. 150 bpm is normal.
Estimated Fetal Weight (EFW)	Calculated via ultrasound measurements.	Percentiles (10th-90th) are normal. Below 10th may indicate IUGR.
Biparietal Diameter (BPD)	Measurement of fetal head width.	Used for gestational age dating. 4.5 cm is normal for 20 wks.

Side-by-Side Comparison!

Finding	Normal at 20 Weeks	Concerning at 20 Weeks	Rationale
Fetal Movement (Quickening)	Consistently felt by mother	Absent	Primary indicator of fetal well-being from maternal perspective.
Fetal Heart Rate	110-160 bpm	>160 bpm (Tachycardia) or 임상 시나리오 Nursing Clinical Practice Guide Clinical Scenario: You are a nurse in a prenatal clinic. Maria, a 22-year-old G1P0 at 20 weeks gestation, is here for her routine anatomy scan. She mentions to you, "You know, I still haven't felt the baby move. Is that normal?" The ultrasound technician has just given you the preliminary report showing a normal FHR, BPD, and EFW. Nursing Intervention Strategy: Assessment: First, validate the client's concern. Acknowledge her statement: "Thank you for telling me that. It's important information." Immediately assess the ultrasound report for fetal cardiac activity and confirm it is present. Even with a normal FHR on the report, the mother's report of absent quickening requires action. Planning & Implementation: Your immediate plan is to notify the obstetric provider (MD/CNM) of the patient's report. Do not dismiss it because the ultrasound numbers look good. The provider will likely want to speak with the patient and may perform a Doppler assessment in the office for immediate reassurance or order additional monitoring. Patient Education & Support: While waiting, educate the client. "It's common to feel movement inconsistently at first, but by 20 weeks, we usually expect you to feel something. The ultrasound shows a good heartbeat, which is very reassuring. The doctor/midwife will want to discuss this with you to make sure everything is okay." Provide emotional support to alleviate anxiety. Evaluation: The desired outcome is confirmation of fetal well-being through provider assessment. Your intervention is successful when the concern is appropriately escalated and evaluated. Patient Safety and Precautions: Never ignore a pregnant patient's report of decreased or absent fetal movement, regardless of gestational age after quickening should have begun. This is a patient-centered safety priority. Relying solely on a recent normal test result can lead to missed warning signs. Nursing Procedure & Medication Flow While this scenario doesn't involve a specific medication, the procedure is communication and escalation: 1. Gather data (maternal report + objective findings). 2. Analyze: Is there a discrepancy? (Yes—normal scan vs. absent movement). 3. Act: Inform the provider promptly with all relevant information. 4. Document: "Client verbalized absence of perceived fetal movement (quickening) at 20w0d gestation. Ultrasound report reviewed showing FHR 150 bpm, EFW 25%, BPD 4.5 cm. Provider Dr. X notified at [time]. Client awaiting further evaluation." A Word from Your Senior Nurse "In maternity nursing, the mother is our most sensitive monitor. She knows her body and her baby. A textbook-normal ultrasound is fantastic, but if the mom says something doesn't feel right, you listen. Your critical thinking bridges the gap between objective data and subjective experience. Passing this question on the NCLEX means you understand that principle. In real life, acting on it can make all the difference. Always advocate for your patient's concerns—it's the heart of nursing." 핵심 개념 Quickening — The first perception of fetal movement by the pregnant woman, typically occurring between 16-20 weeks of gestation. Fetal Heart Rate — The heart rate of the fetus. The normal baseline range is 110-160 beats per minute. Estimated Fetal Weight — A calculation of the approximate weight of the fetus based on ultrasound measurements. Often reported as a percentile for gestational age. Biparietal Diameter — A measurement of the diameter of the fetal head between the two parietal bones. Used to estimate gestational age and monitor fetal growth. Fetal Compromise — A general term indicating that the fetus is not receiving adequate oxygen or nutrients, potentially leading to distress or harm. 마이메르시로 국가고시 완벽 대비 기출문제와 상세 해설을 무료로. 내 약점을 분석하고 진도를 관리하며 더 똑똑하게 공부하세요. 무료로 시작하기 App Store Google Play 학습 참고용입니다. 실제 임상은 최신 지침과 소속 기관 프로토콜을 따르세요.