What common cause of endocarditis is associated with intravenous drug use?

Staphylococcus aureus is the most common cause of endocarditis associated with intravenous drug use. This bacterium is frequently found on the skin and can easily enter the bloodstream through the use of contaminated needles or skin punctures. Once in the bloodstream, it can adhere to heart valves and other endocardial surfaces, leading to infection. The aggressive nature of Staphylococcus aureus, along with its ability to form biofilms on heart valves, contributes to the rapid development of endocarditis in individuals who use intravenous drugs.

Factors such as the overall health of the individual, the presence of pre-existing heart conditions, and the frequency of drug use also play crucial roles in the susceptibility to this infection. Understanding this relationship is vital for identifying patients at risk and implementing appropriate preventive measures.