👉 The death fluid, also known as hemopericardium or cardiac tamponade fluid, is a life-threatening condition where blood accumulates in the pericardial sac, the thin layer of tissue surrounding the heart. This buildup can occur due to various causes, such as trauma, severe infections, or ruptured heart valves. When blood fills the space between the heart and pericardium, it restricts the heart's ability to pump effectively, leading to a rapid decrease in cardiac output and potentially causing severe complications like hypotension, tachycardia, and even cardiac arrest if not promptly treated.