@article{oai:hirosaki.repo.nii.ac.jp:00005900,
 author = {Kinoshita, Hirotaka and Takekawa, Daiki and Mikami, Noriko and Saito, Junichi and Hirota, Kazuyoshi},
 issue = {2-4},
 journal = {弘前医学},
 month = {Mar},
 note = {The treatment of esophageal achalasia using peroral endoscopic myotomy （POEM） is a standard technique that is less invasive than other techniques. There have been no previous reports of using transthoracic ultrasonography to detect complications with POEM.
 We report the case of a 29-year-old male patient with esophageal achalasia who underwent POEM. The procedure was repeatedly interrupted due to hypercapnia and hemodynamic instability. Even after a peritoneal puncture to release abdominal distention, improvement of his respiratory condition was limited. The patient emerged promptly from general anesthesia but developed tachypnea. Using transthoracic ultrasonography we diagnosed left pneumothorax. He was admitted to the intensive care unit, and the trachea was extubated without any invasive intervention 6 hours later.
 We treated a patient who required mechanical ventilation due to hypercapnic respiratory failure after undergoing POEM and found that transthoracic ultrasonography may be useful to detect pneumothorax in such cases.},
 pages = {172--176},
 title = {Usefulness of transthoracic ultrasonography to diagnose pneumothorax after peroral endoscopic myotomy : a case report},
 volume = {70},
 year = {2020}
}