Myocarditis Flashcards
what is myocarditis
heart inflammation
who commonly gets myocarditis
young people
features of myocarditis
features of myocarditis
acute: flabby heart + focal haemorrhages
Chronic: enlarged hear twist hypertrophy
causes of infectious myocardits
Viral: Coxsackie A+B, ECHO Herpes Virus: Epsin-barr adenovirus HIV Hep C influenza Parasitic: Larva migrans, schistosomiasis Bacterial: borrelia, mycobactrium, mycoplasma fungi: aspergillus, candida Protozoa Borrelia burgdoferi
what disease does trypanosomiasis cause
Chaga’s disease: South American endemic
what disease does borrelia burgdoferi
Lyme’s disease
what causes non-infectious myocarditis
immune hypersensitivity to: rheumatic fever drugs (eosinophilic myocarditis) Toxins or immune syndromes
what immune syndromes cause non-infectious myocarditis
- Churg-Strauss
- Diabetes mellitus
- Wegners granulomatosis
- Sarcoid
- Systemic Lupus Erythematosus (SLE)
- Thyrotoxicosis
what is SLE
Libman: Sacks endocarditis, Small sterile embolic,
Under surface of valves/on cords
what drugs cause eosinophilic myocarditis
digoxin
dobutamine
diuretics
cephalosporins
what is rheumatic fever
post strep throat mitral stenosis + thickening/fusion of valve leaflets short thick chord tendinae patchy inflamed myocardium aschoff bodies granulomatous
symptoms and signs of myocarditis
fever chest pain SOB palpitations arrhythmias cardiac failure
how is myocarditis diagnosed
cardiac enlargement on chest X ray
ECG
increased cardiac enzymes endomyocardial biopsy
Viral PCR
how does myocarditis look on ECG
ST and T wave abnormalities + arrhythmias
Heart block in diphtheritic myocaridits, Lymes, Chagas
how does complete heart block look on ECG
regular rhythm
