What causes a feeling of severe pressure in the lungs when laying down?

What causes a feeling of severe pressure in the lungs when laying down?

1. Introduction A feeling of severe pressure in the lungs when laying down is a critical clinical symptom known as orthopnea. This alarming sensation indicates that the cardiopulmonary system is struggling to manage the sudden shift in fluid volume and abdominal weight that occurs when transitioning from an upright to a horizontal position. In a … Read more