This is a heart.A big big heart. The diameter of the baseline of the inferior vena cava is 6.1 mm,the left atrial diameters are 7.4 mm.It’s a big big heart.
This is a needle.A small small needle.The diameter of the point of the needle is 0.001 mm.It’s a small small needle.
The needle pokes through the heart,and it deflated.
Strange how something so small is able to deflate something so big.