How can you tell the difference between pericarditis and MI?
How can you tell the difference between pericarditis and MI?
| ECG finding | Acute pericarditis | Myocardial infarction |
|---|---|---|
| ST-segment shape | Concave upward | Convex upward |
| Q waves | Absent | Present |
| Reciprocal ST-segment changes | Absent | Present |
| Location of ST-segment elevation | Limb and precordial leads | Area of involved artery |
Does pericarditis show ST elevation?
Pericarditis is an inflammation of the pericardium. This can lead to ST elevation in all leads. Therefore, it is important to distinguish pericarditis from a myocardial infarction, which has more acute complaints and ST-elevations are limited to the infarct area.
Why does pericarditis cause ST elevation?
The source of this ST elevation is thought to be local inflammatory changes in the epicardium underlying the inflamed pericardium. The current from this area of ST elevation must return to some unaffected region of the heart and this should be associated with a region of ST depression.
Can pericarditis cause ST depression?
These findings occur in progressive stages, all of which are seen in about 50% of cases of pericarditis. Stage I (acute phase): Diffuse concave upward ST segment elevation in most leads, PR depression in most leads (may be subtle) and sometimes notching at the end of the QRS complex.
Can pericardial effusion cause ST elevation?
The main causes for PE post-ST-elevation MI are early pericarditis with effusion due to bleeding from a transmural infarcted myocardial wall, in addition to heart failure [4, 5]. PE in non-ST-elevation MI in the absence of heart failure is uncommon due to presence of a nontransmural infarct.
Is pericarditis visible on ECG?
Diagnostic testing The electrocardiogram (EKG or ECG) shows electrical activity of the heart. In pericarditis, there are hallmark changes that are seen and can help make the diagnosis. While an abnormal EKG is helpful in making the diagnosis, in the early stages of inflammation, the EKG may be normal.
Can you hear pericarditis with a stethoscope?
Diagnosis. Your doctor will diagnose pericarditis after reviewing your symptoms, taking a medical history and giving you a complete physical exam. If you have pericarditis, your doctor may hear a pericardial rub – a scratchy or grating noise – through a stethoscope.
What is the difference between pericarditis and cardiac tamponade?
Pericarditis can be divided into non-constructive and constrictive pericarditis. Pericarditis is commonly associated with pericardial effusion that can sometimes worsen to cardiac tamponade. Cardiac tamponade is a grave condition that happens after sudden and/or excessive accumulation of fluid in the pericardial space.