4. Shortness of breath
It is more common in women than men, but both of them are likely to experience shortness of breath, even without chest pain. It may seem difficult to breathe, especially in the event of chest pressure and tightening. It feels as if you were wearing very tight clothing that does not allow you to take a deep breath.
This happens because the pumping function of your heart is closely related to your breathing. Your lungs also need oxygenated blood, and when your heart fails to pump well enough, your respiratory function may be affected as well, and you are likely to perceive that by feeling short of breath.
