What impacts does draining flood from around the heart cause?

Heart beats better!: The heart is "wrapped" with a layer of tissue called the pericardium. When blood or other fluid gets between the heart and its "wrapping" (it does look a bit like plastic wrap!), this puts a tremendous workload on the heart. Imagine trying to blow up a balloon...Under water! once the fluid is removed, the heart no longer has to work so hard to "re-inflate" after it pumps.

Improves heart fxn: A pericardial effusion refers to fluid around the heart. If there is a significant amount, it can lead to a condition known as cardiac tamponade, which prevents the heart from working normally. Draining the fluid can restore normal function, and may be life-saving.