Which of the following is incorrect regarding the erythroblastosis foetalis condition in a pregnant woman ?

Options

A. It is a special case arises due to Rh incompatibility or mismatching
B. Destruction of Rh(+ve) foetal RBC inside Rh(-ve) pregnant mother
C. Specific antibodies against Rh antigens are formed inside foetal blood
D. It can be prevented by injecting anti-Rh antibodies to the mother

Answer

To determine which statement regarding erythroblastosis fetalis is incorrect, let's analyze each option step by step.

### Step 1: Understand Erythroblastosis Fetalis
Erythroblastosis fetalis is a condition that occurs when there is an incompatibility between the blood types of a pregnant mother and her fetus, specifically concerning the Rh factor. This typically happens when an Rh-negative mother carries an Rh-positive fetus.

### Step 2: Analyze Each Option
**Option A:** "It is a special case arises due to Rh incompatibility or mismatching."
- This statement is **correct**. Erythroblastosis fetalis is indeed a special case that arises due to Rh incompatibility.

**Option B:** "Destruction of Rh positive fetal RBC inside Rh negative pregnant mother."
- This statement is also **correct**. The antibodies produced by the Rh-negative mother can attack and destroy the Rh-positive red blood cells of the fetus.

**Option C:** "Specific antibodies against Rh antigens are formed inside fetal blood."
- This statement is **incorrect**. The fetus does not produce antibodies against Rh antigens because the Rh antigens are present in its own blood. The antibodies are produced by the mother against the Rh antigens.

**Option D:** "It can be prevented by injecting anti-Rh antibodies to the mother."
- This statement is **correct**. Administering anti-Rh antibodies (such as Rho(D) immune globulin) to the Rh-negative mother can prevent the formation of antibodies against Rh-positive blood cells.

### Conclusion
Based on the analysis, the incorrect statement regarding erythroblastosis fetalis is **Option C**.

### Final Answer
The answer is **C. Specific antibodies against Rh antigens are formed inside fetal blood.**

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