What is sepsis?

Sepsis is a life-threatening condition that arises when the body's response to an infection injures its tissues and organs. It is characterized by a systemic inflammatory response to infection, which can lead to widespread inflammation, blood clotting, and ultimately organ failure. This condition can result from infections caused by bacteria, viruses, or fungi, but it is most often associated with bacterial infections.

The correct answer highlights that sepsis involves a poisoning of the blood, which occurs as the body releases inflammatory chemicals into the bloodstream in response to an infection. These chemicals can cause blood vessels to dilate and become more permeable, leading to insufficient blood flow to vital organs and damage to those organs. This systemic reaction is critical and requires immediate medical attention, as sepsis can progress rapidly to septic shock, where blood pressure drops dangerously low.

Understanding sepsis is essential for recognizing the urgency of treating infections, as timely intervention can significantly improve outcomes for affected individuals.