Expands definition of career appointment: a limited appointment will be designated as a career appointment when the incumbent has attained 1,000 hours of qualifying service in any 12 consecutive months without a break in service of at least 120 consecutive calendar days.
Myocarditis. Myocarditis occurs when a virus (or, more rarely, a bacteria or fungus) infects the body, causing an inflammation of the heart muscle. Myocarditis can also be caused by an adverse reaction to certain medicines, such as chemotherapy drugs, and exposure to some chemicals. Learn more about Myocarditis.
The endocardium regulates the contractions of the heart. Damage to the inner lining of the heart may affect the heartâs ability to contract at a quick, regular pace. The endocardium is the innermost layer of heart tissue that lines the cavities and valves of the heart.Heart injuries from heart attacks usually do not extend as far inward as the endocardium.View slideshow of images above.he endocardium does not trigger these contractions, but it helps to regulate them. The endocardium lines the walls of the atria and ventricles and the valves between them. The cellular make-up of the endocardium is close to that of the endothelium, the tissue layer that lines the inside of blood vessels.