myDocType=Article myDocSubType=70 copyrightYear= 2017--> Cardiovascular Conditions
Laboratory values can show increased urea ( BUN ), or increased blood creatinine in cases of uremic pericarditis . Generally however, laboratory values are normal, but if there is a concurrent myocardial infarction (heart attack) or great stress to the heart, laboratory values may show increased cardiac markers like Troponin (I, T), CK-MB , Myoglobin , and LDH 1 (Lactase Dehydrogenase isotype 1). The preferred initial diagnostic testing is the ECG which may show a 12-lead electrocardiogram with diffuse, non-specific, concave ("saddle-shaped"), ST segment-elevations all leads except aVR and V1  and PR segment-depression possible in any lead except aVR;  sinus tachycardia, and low-voltage QRS complexes can also be seen if there is subsymptomatic levels of pericardial effusion. The PR depression is often seen early in the process as the thin atria are affected more easily than the ventricles by the inflammatory process of the pericardium.
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