Other abnormal responses Square wave response Seen in cardiac failure, constrictive pericarditis, cardiac tamponade and valvular heart disease.
The garment should fit well and allow freedom of motion without being constrictive.
Anything that is too snug, constrictive or otherwise ill-fitting will eventually make itself known in a very unpleasant way as the night wears on.
If it does, seek out a few different styles, including those with "floating" underwire bras, which move along with you and feel less constrictive than traditional underwires.
These don't have to be constrictive - many modern pieces of shapewear are comfortable and non-binding.
