The term used to describe difficult breathing in the reclining position is orthopnea.
Orthopnea is dyspnea (difficulty, impediment and obstacle to be able to breathe) that appears in decubitus position and forces the person to remain seated and with the thorax upright, that is, in a straight position with half the body up.
It is generally a consequence of left ventricular failure and is occasionally accompanied by diaphragmatic paralysis or chronic obstructive lung disease.
Orthopnea is caused by congestion in the lungs and perhaps accompanied by the accumulation of excess fluid in the lungs (pulmonary edema), which occurs as a result of left heart failure.
On the other hand, orthopnea can be a subtle condition, in which a person notices that sleep is more comfortable with several pillows under their head, or a more severe condition in which the person can breathe deeply and comfortably only when sitting or stand.
Therefore, we can conclude that the term used to describe difficult breathing in the reclining position is orthopnea and is a sign of heart failure.
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