Infanticide Practice Questions

Q: Stillbirth is defined as a fetus born dead at or after what gestational age?

28 weeks. **Explanation:** In Forensic Medicine and Obstetrics, **Stillbirth** is defined as the birth of a fetus that shows no signs of life (no breathing, heartbeat, or voluntary muscle movement) at or after **28 weeks of gestation**. **1. Why 28 weeks is correct:** Under the Registration of Births and Deaths Act and standard forensic practice in India, 28 weeks is the legal threshold for stillbirth. This coincides with the traditional age of **viability**—the point at which a fetus is capable of independent existence outside the womb. If a fetus is born dead before this period, it is medically classified as an **abortion (miscarriage)**. **2. Analysis of Incorrect Options:** * **A (16 weeks) & B (18 weeks):** These are far below the age of viability. Fetuses born at this stage are classified as spontaneous abortions. * **C (24 weeks):** While the WHO and many developed countries have lowered the definition of stillbirth/viability to 24 weeks (or 500g birth weight) due to advanced neonatal care, **Indian Law and the MTP Act** historically adhere to the 28-week limit for forensic and statistical purposes. **3. High-Yield Clinical Pearls for NEET-PG:** * **MTP Act Amendment (2021):** Note that for legal termination of pregnancy (MTP), the upper limit has been increased to **24 weeks** for specific categories of women, but the definition of stillbirth remains 28 weeks. * **Signs of Stillbirth:** Presence of **Maceration** (aseptic autolysis) is a definitive sign that the fetus died in utero at least 12–24 hours before delivery. * **Hydrostatic Test:** This test is used to differentiate a stillbirth from a live birth. A negative test (lungs sink in water) suggests stillbirth, provided decomposition hasn't occurred. * **Spalding’s Sign:** Radiological evidence of overlapping skull bones, indicating fetal death (usually occurs 4–7 days after death).

Q: Robert's sign is a feature of which of the following?

Dead born infant. **Explanation:** **Robert’s Sign** is a classic radiological feature used to diagnose **intrauterine fetal death (IUFD)**. It refers to the presence of **gas shadows** (usually nitrogen) within the fetal heart and large blood vessels (aorta and vena cava). This occurs due to the decomposition of blood following fetal demise and can be seen on an X-ray as early as 12 hours after death. **Why the correct answer is right:** * **Option B (Dead born infant):** Robert’s sign is a definitive sign of fetal death in utero. Along with Spalding’s sign (overlapping of skull bones), it confirms that the fetus is no longer alive before delivery. **Why the incorrect options are wrong:** * **Option A & D (Le Fort and Orbital fractures):** These are traumatic injuries of the facial skeleton. While they involve specific radiological signs (e.g., "Dish-face deformity" in Le Fort II), they have no association with fetal gas formation. * **Option C (Live born infant):** A live-born infant will have clear lung expansion (revealed by the hydrostatic test) and no intravascular gas shadows, as decomposition has not occurred. **High-Yield Clinical Pearls for NEET-PG:** * **Spalding’s Sign:** Overlapping of fetal skull bones due to liquefaction of the brain (appears 4–7 days after death). * **Deuel’s Halo Sign:** Edema of the fetal scalp causing a "halo" appearance on X-ray (indicates fetal death). * **Hydrostatic Test (Raygat’s Test):** Used to differentiate between a stillborn and a live-born infant by checking if the lungs float in water (positive in live-born). * **Wredin’s Test:** Presence of air in the middle ear, indicating the infant breathed after birth.

Q: Loss of alignment and overriding of bones of the cranial vault is seen in which sign?

Spadling's sign. ### Explanation **Spalding’s Sign** is a classic radiological and autopsy finding indicative of **intrauterine fetal death (IUFD)**. It refers to the overlapping (overriding) of the fetal cranial vault bones due to the liquefaction of the brain matter and the loss of intracranial pressure following fetal demise. This collapse of the skull occurs typically 4 to 7 days after death in utero. #### Analysis of Options: * **Spalding’s Sign (Correct):** As the brain tissue undergoes autolysis, it loses its structural integrity. The cranial bones, no longer supported by internal pressure, collapse inward and override each other at the sutures. * **Maceration:** This is the aseptic autolysis of a fetus in a sterile amniotic environment. While Spalding’s sign is a *feature* seen in macerated fetuses, maceration itself refers to the overall process (skin peeling, softening of tissues) rather than the specific bony alignment sign. * **Mummification:** This occurs when a fetus dies in utero but the amniotic fluid is deficient or absorbed (e.g., in twin pregnancies). The fetus dries up and shrivels into a leathery mass; it does not show the liquefactive overriding seen in Spalding's sign. * **Plocquet’s Test:** This is a medicolegal test used to determine live birth. It compares the weight of the lungs to the total body weight (Ratio: 1:70 for live birth; 1:35 for stillbirth). It is unrelated to cranial bone alignment. #### High-Yield Pearls for NEET-PG: * **Robert’s Sign:** Presence of gas in the fetal heart and large vessels (earliest sign of IUFD, seen within 12 hours). * **Deuel’s Halo Sign:** Edema of the fetal scalp causing a "halo" appearance on X-ray/USG. * **Spalding’s Sign Requirement:** It is only valid if the mother is **not in labor**; during labor, "molding" can cause similar overlapping in a live fetus.

Q: What are the characteristic radiological findings of battered baby syndrome?

All of the above. **Explanation:** **Battered Baby Syndrome (Caffey’s Syndrome)** refers to non-accidental trauma in children, typically under 3 years of age, characterized by repetitive physical abuse. The radiological hallmark is the presence of **asynchronous injuries**, meaning injuries occurring at different points in time. 1. **Why the answer is correct:** * **Multiple injuries not explained by a single cause:** Accidental falls usually result in a single injury. In abuse, there is often a discrepancy between the clinical history provided by the caregiver and the severity or variety of radiological findings (e.g., a simple fall causing bilateral femur fractures). * **Multiple fractures in different stages of healing:** This is the most diagnostic radiological feature. Finding an acute fracture alongside a healing fracture (with subperiosteal new bone) and an old remodeled fracture indicates a chronic pattern of abuse. * **Excessive callus formation:** Because abused children are rarely taken for immediate medical care, fractures remain unstable and un-splinted. This lack of immobilization leads to the formation of exuberant, "exaggerated" callus. 2. **Analysis of Options:** Since all three features (A, B, and C) are classic radiological indicators of repeated, non-accidental trauma, **Option D** is the most comprehensive choice. **High-Yield Clinical Pearls for NEET-PG:** * **Metaphyseal Bucket-Handle/Corner Fractures:** Pathognomonic for child abuse; caused by twisting or pulling of limbs. * **Common Sites:** Ribs (especially posterior), long bones, and skull. * **Triad of Shaken Baby Syndrome:** Subdural hemorrhage, Retinal hemorrhage, and Encephalopathy. * **Legal Aspect:** In India, any suspicion of child abuse must be reported under the **POCSO Act**.

Q: Raygat's test is based on:

Specific gravity of lung. **Explanation:** **Raygat’s Test** (also known as the **Hydrostatic Test** or Floatation Test) is a classic forensic procedure used to determine whether a newborn was born alive (live birth) or was stillborn. 1. **Why Specific Gravity is the Correct Answer:** The test is based on the principle of **Specific Gravity**. Before birth, fetal lungs are solid and airless, with a specific gravity of approximately **1.040 to 1.050** (heavier than water), causing them to sink. Once the infant takes its first breath, the lungs expand with air, significantly lowering their specific gravity to approximately **0.940 to 0.950** (lighter than water), causing the lungs to float. 2. **Analysis of Incorrect Options:** * **Weight of Lung (Option A):** While the absolute weight of the lung increases after birth due to increased pulmonary circulation (Fodere’s Test), Raygat’s test specifically measures buoyancy, not mass. * **Consistency of Lung (Option C):** Unexpanded lungs are liver-like (solid), while expanded lungs are spongy and crepitant. While this is an observation during autopsy, it is not the physical basis of Raygat’s test. * **Volume of Lungs (Option D):** Lung volume increases after respiration, but the test relies on the *ratio* of mass to volume (density/specific gravity) to determine if the organ floats. **High-Yield Clinical Pearls for NEET-PG:** * **False Positives (Floating despite stillbirth):** Can occur due to **putrefaction** (gas formation) or artificial respiration. * **False Negatives (Sinking despite live birth):** Can occur in cases of **secondary atelectasis**, severe pneumonia, or pulmonary edema. * **Wredin’s Test:** A related test involving the disappearance of the gelatinous material in the middle ear after respiration. * **Breslau’s Second Life Test:** Based on the presence of air in the stomach and intestines due to swallowing during live birth.

Q: Which condition can lead to a false-negative hydrostatic test in a live-born fetus?

Atelectasis. The **Hydrostatic Test (Raygat’s Test)** is based on the principle that lungs containing air will float in water (specific gravity < 1.000), while non-aerated lungs will sink (specific gravity ~1.040 to 1.050). ### **Why Atelectasis is Correct** A **False-Negative** result occurs when a child was born alive, but the lungs sink. In cases of **Atelectasis** (specifically secondary or acquired), the lungs may fail to expand or may collapse after birth due to conditions like surfactant deficiency (Hyaline Membrane Disease), mucus plugs, or extreme prematurity. Because the alveoli contain no air, the lungs sink, incorrectly suggesting a stillbirth. ### **Why Other Options are Incorrect** * **Meconium Aspiration:** This can cause partial airway obstruction and air trapping. If air is present, the lungs will float, potentially leading to a true positive or a false positive (if the air is from decomposition), but not a false negative. * **Emphysema:** This involves the presence of air in the lung tissue (e.g., interstitial emphysema). This would cause the lungs to float, which is the opposite of a false negative. * **Putrefaction:** This is the most common cause of a **False-Positive** test. Gases produced by decomposition (like $H_2S$ and $CH_4$) make the lungs buoyant, causing them to float even if the child was stillborn. ### **High-Yield Clinical Pearls for NEET-PG** * **False Positive:** Putrefaction, Artificial Respiration (mouth-to-mouth), and Emphysema. * **False Negative:** Atelectasis, Pneumonia (consolidation), and Pulmonary Edema. * **Wredin’s Test:** Examination of the middle ear for the presence of air (indicates live birth). * **Breslau’s Second Life Test:** Checking for air in the stomach and intestines (indicates live birth). * **Static Test:** Simply observing the appearance of the lungs (unexpanded lungs are firm, dark red, and liver-like).

Q: What is the specific gravity of unrespired lung tissue?

1.04. ### Explanation The specific gravity of lung tissue is a critical parameter in forensic pathology, particularly in cases of suspected infanticide to determine if a newborn was born alive (respired) or stillborn (unrespired). **1. Why 1.04 is Correct:** The specific gravity of **unrespired (fetal) lung tissue** is approximately **1.04 to 1.05**. Before the first breath, the lungs are solid, liver-like (hepatization), and contain no air. Since their density is greater than water (specific gravity > 1.0), unrespired lungs will **sink** when placed in water. This is the physiological basis for the **Hydrostatic Test (Raygat’s Test)**. **2. Analysis of Incorrect Options:** * **A (0.94):** This is incorrect. Once a child breathes, the introduction of air lowers the overall density of the lung tissue to approximately **0.94 to 0.95**. Because this is less than 1.0, respired lungs will **float** in water. * **B (1.2):** This value is too high for lung tissue; it is closer to the specific gravity of compact bone or concentrated urine. * **C (0.75):** This is significantly lower than the density of even fully aerated lung tissue. **3. High-Yield Clinical Pearls for NEET-PG:** * **Hydrostatic Test:** Positive (floats) = Live birth; Negative (sinks) = Stillbirth. * **False Positives (Floats despite stillbirth):** Occur due to **putrefaction** (gas formation) or artificial respiration. * **False Negatives (Sinks despite live birth):** Occur in cases of severe atelectasis, pneumonia, or pulmonary edema. * **Foderé’s Test:** Another name for the static hydrostatic test. * **Wredin’s Test:** Examination of the middle ear; disappearance of the gelatinous embryonic connective tissue indicates live birth (takes about 24 hours).

Q: Rigor mortis in a fetus at birth can be seen in?

Dead born. ### Explanation **1. Why "Dead Born" is correct:** Rigor mortis is a post-mortem phenomenon characterized by the stiffening of muscles due to the depletion of ATP. For rigor mortis to occur, the fetus must have been **alive in the uterus** before dying. A **Dead Born** fetus refers to an infant who died in utero (after reaching viability) but was born subsequently. Since the tissues were alive shortly before birth, the biochemical processes required for rigor mortis can take place after death. **2. Why the other options are incorrect:** * **Stillborn:** By definition, a stillborn fetus is one that has died in the uterus and shows signs of **maceration** (aseptic autolysis). Maceration occurs when a fetus remains in the liquor amnii for at least 12–24 hours after death. In such cases, the muscles undergo liquefaction and lose the ability to stiffen; therefore, rigor mortis is never seen in a macerated stillborn fetus. * **Superfoetation:** This refers to the fertilization of a second ovum when a fetus is already present in the uterus. It relates to the timing of conception, not the post-mortem changes at birth. * **Superfecundation:** This is the fertilization of two ova within the same cycle by sperm from different acts of coitus (potentially different fathers). Like superfoetation, it does not describe the physiological state of the fetus regarding rigor mortis. **3. High-Yield Clinical Pearls for NEET-PG:** * **Rigor Mortis in Fetus:** It is of short duration and disappears quickly due to the small muscle mass. * **Maceration:** The earliest sign is **skin slipping** (occurs in 12–24 hours). **Spalding’s Sign** (overlapping of cranial bones on X-ray) is a classic radiological sign of intrauterine death (seen after 24–48 hours). * **Live Birth vs. Dead Born:** Rigor mortis can occur in both a live-born child (who dies after birth) and a dead-born child (who dies just before birth), but it is **never** seen in a macerated fetus.

Q: What is the legal age by which a fetus is considered capable of independent existence?

210 days. **Explanation:** The concept of **viability** refers to the period of gestation after which a fetus is considered capable of maintaining an independent existence outside the mother's womb. **1. Why 210 days is correct:** In Forensic Medicine and Indian Law, the standard age of viability is traditionally considered to be **7 lunar months (28 weeks)**. Since one lunar month is 30 days, 7 months equals **210 days**. At this stage, the lungs have developed sufficient surfactant, and the organs are mature enough to support life, albeit often requiring neonatal intensive care. This is a critical legal threshold used in cases of infanticide and medical negligence. **2. Analysis of Incorrect Options:** * **A (240 days) & B (230 days):** These represent approximately 33–34 weeks. While a fetus is highly viable at this stage, these are well beyond the *minimum* legal threshold of 210 days. * **C (220 days):** This is approximately 31 weeks. While viable, it does not represent the standard legal definition of the onset of viability (210 days). **3. High-Yield Clinical Pearls for NEET-PG:** * **MTP Act Amendment (2021):** Note that for legal abortion in India, the upper limit has been increased to **24 weeks** for specific categories of women, and there is no upper limit for substantial fetal abnormalities (decided by a Medical Board). * **Rule of Haase:** Used to determine the age of a fetus in months. For the first 5 months, the square root of the length (in cm) gives the age. After 5 months, divide the length by 5. * **Weight Threshold:** A fetus weighing more than **1000 grams** is generally considered viable in the Indian context. * **First Sign of Viability:** The appearance of the **ossification center in the lower end of the femur** (at 36-38 weeks) is a classic sign of a near-term fetus, but viability itself begins much earlier at 210 days.

Question 1

Stillbirth is defined as a fetus born dead at or after what gestational age?

Accepted Answer

28 weeks

Answer

16 weeks

Answer

18 weeks

Answer

24 weeks

Question 2

Robert's sign is a feature of which of the following?

Accepted Answer

Dead born infant

Answer

Le fort fracture grade II

Answer

Live born infant

Answer

Orbital fracture

Question 3

Loss of alignment and overriding of bones of the cranial vault is seen in which sign?

Accepted Answer

Spadling's sign

Answer

Maceration

Answer

Mummification

Answer

Plocquet's test

Question 4

What are the characteristic radiological findings of battered baby syndrome?

Accepted Answer

All of the above

Answer

Multiple injuries not explained by a single cause

Answer

Multiple fractures in different stages of healing

Answer

Excessive callus formation

Question 5

Raygat's test is based on:

Accepted Answer

Specific gravity of lung

Answer

Weight of lung

Answer

Consistency of lung

Answer

Volume of lungs

Question 6

Which condition can lead to a false-negative hydrostatic test in a live-born fetus?

Accepted Answer

Atelectasis

Answer

Meconium aspiration

Answer

Emphysema

Answer

Putrefaction

Question 7

Hydrostatic test is NOT required in which of the following conditions?

Accepted Answer

All of the above

Answer

Monster child

Answer

Mummified child

Answer

Non-viable child

Question 8

What is the specific gravity of unrespired lung tissue?

Accepted Answer

1.04

Answer

0.94

Answer

1.2

Answer

0.75

Question 9

Rigor mortis in a fetus at birth can be seen in?

Accepted Answer

Dead born

Answer

Still born

Answer

Superfoetation

Answer

Superfecundation

Question 10

What is the legal age by which a fetus is considered capable of independent existence?

Accepted Answer

210 days

Answer

240 days

Answer

230 days

Answer

220 days

Infanticide — MCQs

Infanticide — MCQs

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