pericardiology

per·i·car·di·ol·ogy

(per'i-kar'dē-ol'ŏ-jē),
The science or study of the pericardium, its physiology, and diseases.

per·i·car·di·ol·o·gy

(per'i-kahr'dē-ol'ŏ-jē)
The science or study of the pericardium and its physiology and diseases.