Robert's sign indicates:

DSSSB 6 September 2024

Obstetrics & Gynaecology

Easy

Appeared in: DSSSB 6 September 2024

Explanation

Robert's sign is a classic radiological finding that indicates intrauterine fetal death (IUFD).
It is specifically defined as the presence of gas shadows within the fetal heart and major blood vessels.
This gas is a product of tissue decomposition and maceration that occurs after the fetus has died.
It can be detected on an X-ray or ultrasound, sometimes as early as 12 hours after fetal demise.

Option A: Post-term pregnancy is defined by gestational age (a pregnancy lasting 42 weeks or more) and is not diagnosed by any radiological sign of fetal death.
Option B: Multiple pregnancies (e.g., twins, triplets) are diagnosed by visualizing more than one fetus on an ultrasound examination.
Option C: An incompetent cervix refers to the painless dilation of the cervix, leading to second-trimester pregnancy loss. It is a maternal condition diagnosed by history and transvaginal ultrasound, not a sign found within the fetus.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Radiological signs of intrauterine fetal death (IUFD) as background academic context rather than a clinical decision trigger.
Recognizing radiological signs of IUFD, such as Robert's sign, is crucial for confirming fetal demise, especially when modern ultrasound is unavailable. This allows for appropriate management and counseling of the mother.
A definitive diagnosis of IUFD prevents unnecessary interventions aimed at a living fetus and helps in planning the delivery of the deceased fetus, which minimizes maternal risks like infection or disseminated intravascular coagulation (DIC).
What if? If a fetal heartbeat is clearly detected on ultrasound, it definitively rules out IUFD, and signs like Robert's sign become irrelevant. The presence of cardiac activity is the primary determinant of fetal viability.

How to Approach the Question

This is a factual recall question based on an obstetrical eponym.
Identify the key term in the question stem: "Robert's sign".
Recall the clinical context of classic obstetrical signs. Eponyms like Robert's sign, Spalding's sign, and Horner's sign are often associated with specific diagnoses.
Evaluate the options. Post-term pregnancy, multiple pregnancies, and incompetent cervix are conditions diagnosed by gestational age, ultrasound visualization, and cervical assessment, respectively.
Intrauterine death is a diagnosis confirmed by the absence of fetal heart activity and can be supported by post-mortem radiological signs that indicate decomposition, such as gas formation (Robert's sign) or skull collapse (Spalding's sign).
Therefore, associate Robert's sign with the consequences of fetal death.

Concept Tested & Keywords

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E6 Midwifery Obstetrics and Gynecology Nursing Sandeep Kaur p. 65-81