multi class comparison
Cardiac Inflammation: Endocarditis vs Pericarditis vs Myocarditis — Layer, Presentation, Complication
All three are "cardiac inflammation," but the wrong layer changes everything — embolic stroke versus tamponade versus sudden heart failure. The NCLEX gives you a cluster of findings and expects you to match it to the correct -itis in seconds. Mixing them up means choosing an intervention that misses the life threat.
Comparison
Side-by-side3 compared
Comparevs
Dimension
Endocarditis
Pericarditis
Myocarditis
Layer & cause
- Endocardium/valve lining; S. aureus, S. viridans
- IV drug use, prosthetic valves
- Pericardium (outer sac)
- Viral, post-MI (Dressler), uremia
- Myocardium (heart muscle)
- Viral (coxsackie, COVID-19); autoimmune
Hallmark presentation
- ★Janeway lesions, Osler nodes, splinter hemorrhages
- Fever; new regurgitant murmur
- ★Sharp pleuritic pain, eased leaning forward
- Worse supine and with deep breath
- ★New HF in young, previously healthy pt
- Follows viral illness; vague chest pain
Diagnostics & ECG
- Blood cultures ×3 before antibiotics
- Echo shows valve vegetations
- ★Diffuse concave ST elevation + PR depression
- ↑ ESR/CRP; echo for effusion
- ↑ Troponin/CK-MB; echo shows ↓ EF
- Endomyocardial biopsy definitive
Auscultation & monitoring
- Neuro checks q1–2h for embolic stroke
- Trend fevers; IV antibiotics 4–6 wk
- Pericardial friction rub (scratchy)
- Watch tamponade: pulsus paradoxus >10
- S3 gallop; continuous telemetry, daily weights
- Activity restriction; watch HF decline
Treatment
- Prolonged IV antibiotics 4–6 weeks
- Valve surgery if vegetation/failure
- NSAIDs + colchicine for inflammation
- Pericardiocentesis for tamponade
- Supportive HF therapy; treat cause
- Manage dysrhythmias; rest the heart
Patient teaching
- Antibiotic prophylaxis before procedures
- Report fever, new emboli signs
- Sit up / lean forward eases pain
- Finish full NSAID/colchicine course
- Restrict exertion during recovery
- Report worsening dyspnea or edema
Red flags — escalate
- New stroke / limb ischemia → embolism
- ★Beck triad: JVD, muffled tones, ↓BP
- VT or heart block → fatal dysrhythmia
Complications
- Septic emboli: stroke, splenic/renal infarct
- Effusion → cardiac tamponade
- Dilated cardiomyopathy; sudden cardiac death
Layer & cause
Endocarditis
- Endocardium/valve lining; S. aureus, S. viridans
- IV drug use, prosthetic valves
Pericarditis
- Pericardium (outer sac)
- Viral, post-MI (Dressler), uremia
Hallmark presentation
Endocarditis
- ★Janeway lesions, Osler nodes, splinter hemorrhages
- Fever; new regurgitant murmur
Pericarditis
- ★Sharp pleuritic pain, eased leaning forward
- Worse supine and with deep breath
Diagnostics & ECG
Endocarditis
- Blood cultures ×3 before antibiotics
- Echo shows valve vegetations
Pericarditis
- ★Diffuse concave ST elevation + PR depression
- ↑ ESR/CRP; echo for effusion
Auscultation & monitoring
Endocarditis
- Neuro checks q1–2h for embolic stroke
- Trend fevers; IV antibiotics 4–6 wk
Pericarditis
- Pericardial friction rub (scratchy)
- Watch tamponade: pulsus paradoxus >10
Treatment
Endocarditis
- Prolonged IV antibiotics 4–6 weeks
- Valve surgery if vegetation/failure
Pericarditis
- NSAIDs + colchicine for inflammation
- Pericardiocentesis for tamponade
Patient teaching
Endocarditis
- Antibiotic prophylaxis before procedures
- Report fever, new emboli signs
Pericarditis
- Sit up / lean forward eases pain
- Finish full NSAID/colchicine course
Red flags — escalate
Endocarditis
- New stroke / limb ischemia → embolism
Pericarditis
- ★Beck triad: JVD, muffled tones, ↓BP
Complications
Endocarditis
- Septic emboli: stroke, splenic/renal infarct
Pericarditis
- Effusion → cardiac tamponade
★ marks the fact that sets a column apart.
Clinical Pearl
Rub + lean forward = pericarditis; vegetations + emboli = endocarditis; new HF after flu = myocarditis.
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