Final answer:
A patient with nighttime dyspnea due to a deviated septum would likely have obstructive sleep apnea (OSA).
Step-by-step explanation:
A patient who has nighttime dyspnea, or difficulty breathing at night, due to a deviated septum would likely have a condition called obstructive sleep apnea (OSA). OSA is a sleep disorder characterized by repetitive episodes of complete or partial blockage of the upper airway during sleep, leading to disrupted breathing and oxygen deprivation. The deviated septum can contribute to the narrowing of the airway, which can worsen the symptoms of OSA.