Study Notes on Pericarditis

Definition: Pericarditis is the inflammation of the pericardial membrane surrounding the heart.

Viral Causes: Infections by viruses can lead to pericarditis.
Idiopathic: Causes that are unknown or cannot be attributed to a specific origin.
Autoimmune Disorders: Conditions like Systemic Lupus Erythematosus (SLE) can cause pericarditis.
- Full Meaning of SLE: Systemic Lupus Erythematosus.
Renal Failure: Impairment of kidney function can contribute to the development of pericarditis.
Myocardial Infarction (MI): Heart attack can lead to inflammation of the pericardium.
Dressler's Syndrome: A type of pericarditis that occurs after a heart attack due to an autoimmune reaction.
Pericardial Effusion: Accumulation of fluid in the pericardial cavity, causing pressure and inflammation.
Cardiac Tamponade: A medical emergency where fluid in the pericardial space compresses the heart, compromising its function.

Chest Pain: The primary symptom, which is characterized by:
- Radiating pain to back, neck, and shoulder.
- Pain tends to be relieved by sitting upright or leaning forward, similar to a condition known as shoulder lystitis.
Pericardial Friction Rub: A distinctive sound that can be heard through a stethoscope that resembles a grating sound as the inflamed layers of the pericardium rub against each other.
Other Symptoms:
- Fever
- Chills
- Fatigue

Electrocardiogram (ECG): Diagnostic tool showing:
- Elevated ST segments.
- Possible depressed PR interval.
Echocardiogram: An ultrasound of the heart that can help confirm diagnosis.

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