Review Question - QID 107949

A 37-year-old male presents with difficulty eating solids and drinking water; which has been progressively worse over the past year. He has noticed that he is regurgitating food that appears undigested and has also been having difficulty belching. He said that lifting his neck seems to help him keep his food down. He is currently on omeprazole for his acid reflux; however, his heartburn still persists. An esophagogastroduodenoscopy (EGD) is performed that shows no evidence of mechanical obstruction or esophageal inflammation. If esophageal manometry is performed, which of the following will most likely be present in this patient?