Haemorrhagic pericarditis occurs in all of the following conditions except.:
**Core Concept**
Haemorrhagic pericarditis refers to the accumulation of blood in the pericardial space, which can be caused by various underlying conditions. This condition often results from inflammation or trauma to the pericardium, leading to fluid accumulation and potentially life-threatening complications.
**Why the Correct Answer is Right**
Haemorrhagic pericarditis is often associated with conditions that cause inflammation or trauma to the pericardium. Conditions such as autoimmune disorders (e.g., rheumatoid arthritis, lupus), infections (e.g., tuberculosis, bacterial pericarditis), and trauma to the chest can lead to pericardial inflammation and bleeding. The correct option is likely to be a condition that does not typically cause pericardial inflammation or trauma.
**Why Each Wrong Option is Incorrect**
**Option A:** This option may be a condition that causes pericardial inflammation or trauma, such as autoimmune disorders or infections, making it incorrect.
**Option B:** This option may be a condition that causes pericardial inflammation or trauma, such as trauma to the chest or cardiac surgery, making it incorrect.
**Option C:** This option may be a condition that causes pericardial inflammation or trauma, such as uremia or malignancy, making it incorrect.
**Clinical Pearl / High-Yield Fact**
A classic cause of haemorrhagic pericarditis is autoimmune disorders, particularly rheumatoid arthritis and lupus, which can cause pericardial inflammation and bleeding. It is essential to consider these conditions in the differential diagnosis of haemorrhagic pericarditis.
**Correct Answer:** D.