Poisoning caused by bullet retained in body is;
**Core Concept**
A retained bullet in the body can cause poisoning due to the release of toxic substances from the bullet, such as lead, copper, or other heavy metals. This condition is known as **lead poisoning** or **metal fume fever**, depending on the specific metal involved.
**Why the Correct Answer is Right**
When a bullet is retained in the body, it can corrode over time, releasing toxic particles into the surrounding tissues. In the case of lead bullets, the lead can be absorbed into the bloodstream, causing lead poisoning. This can lead to a range of symptoms, including abdominal pain, constipation, fatigue, and neurological problems. The exact mechanism of lead poisoning involves the inhibition of delta-aminolevulinic acid dehydratase (ALAD), an enzyme involved in heme synthesis.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the effects of a retained bullet in the body.
**Option B:** This option is incorrect because retained bullets do not typically cause anaphylaxis, which is a severe, life-threatening allergic reaction.
**Option C:** This option is incorrect because retained bullets do not typically cause a viral infection, such as pneumonia or sepsis.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that retained bullets can be a source of toxic metal poisoning, and prompt removal of the bullet is often necessary to prevent long-term health complications. This is particularly true for lead bullets, which can cause irreversible neurological damage if left in place for too long.
**Correct Answer: A. Lead poisoning.**