Final answer:
Cardiac biomarkers can indicate heart damage, while restrictive cardiomyopathy and constrictive pericarditis are two different heart conditions.
Step-by-step explanation:
Cardiac biomarkers are substances that can be measured in the blood, and their levels can indicate damage or stress to the heart. Elevated cardiac biomarkers, such as troponin and creatine kinase MB, are often seen in conditions like myocardial infarction (heart attack).
Restrictive cardiomyopathy is a type of heart disease where the heart muscle becomes stiff and cannot fill properly with blood during the relaxation phase. It can be caused by conditions like amyloidosis or sarcoidosis.
Constrictive pericarditis is a condition where the heart's outer lining, the pericardium, becomes thick and rigid, limiting the heart's ability to expand and fill with blood. It is usually caused by inflammation or scarring of the pericardium.