Lecture 7 Part 2: Pericardial Disease Flashcards
What are the functions of the pericardium?
- Prevents overdilation of the heart chambers.
- Prevents the heart from shifting in the chest.
- Prevents lung infections from infecting the heart.
What are the primary etiologies of pericarditis?
- Idiopathic
- Infectious (Viral MC)
- Systemic diseases (hypothyroidism, inflammatory, CKD)
- Neoplasms
- Drug-induced
- Pericardial injury
- Myocardial injury
Viral is seasonal as well.
All the inflammatory causes are generally autoimmune diseases.
If a bacterial etiology is suspected for pericarditis, what most likely precipitated it?
Lung infection
What two cancers are most likely to cause pericarditis with a cancerous etiology?
- Lung
- Breast
These two make up about 50% of cancerous pericarditis cases.
Overall, cancers cause about 10% of pericarditis cases.
What drugs are likely to induce pericarditis?
- Amoxicillin or cromolyn (Allergy)
- Anthracycline chemo agents (direct cardiac toxicity)
- Procainamide, hydralazine, methyldopa, isoniazid (Drug-induced SLE)
- Phenytoin and minoxidil (unknown)
What is Dressler syndrome?
A syndrome that appears 2 weeks after an MI, resulting in pericarditis/inflammatory response.
What are the 4 primary diagnostic features of pericarditis?
- Chest pain
- Pericardial friction rub
- EKG changes
- Pericardial effusion
2 out of 4 is diagnostic.
EKG changes: Widespread, diffuse STE or PR depression as prof rice taught us!
Can lead to T wave inversion if caught later.
CPEP
What is the mnemonic for pericarditis causes?
- Collagen vascular changes
- Aortic aneurysm
- Radiation
- Drugs (hydralazine)
- Infections
- Acute renal failure
- Cardiac infarction
- Rheumatic fever
- Injury
- Neoplasms
- Dressler’s Syndrome
CARDIAC RIND
What is the CARDINAL symptom of pericarditis?
Chest pain
Usually relieved by leaning forward or sitting up.
How does someone with pericarditis typically present?
- Dyspnea
- Fever
- Pericardial friction rub
- Angina that is relieved by leaning forward
- Sharp, retrosternal pain
What is the first-line pharmacological tx for pericarditis pain and inflammation?
- NSAIDs: Ibuprofen or indomethacin
- ASA should be used post-MI only.
What conditions should make us consider inpatient managment for pericarditis?
- Fever > 38.3C
- Subacute onset
- Immunosuppression
- Trauma
- Oral AC therapy
- ASA/NSAID failure
- Myopericarditis
- Large pericardial effusion or tamponade
What is the pharmacological therapy for preventing pericarditis recurrence?
- Colchicine
- Corticosteroids (for severe or auto-immune etiology)
What happens when a pericardial effusion gets really big?
Cardiac tamponade
What is Beck’s triad?
- Distant/muffled heart sounds
- JVD or increased JVP
- Hypotension
NOT PATHOGNOMONIC for cardiac tamponade