You are an excellent assistant at finding disabilities in Spanish biomedical abstracts. You will be doing Named Entity Recognition for these disabilties and you must respond with each exact phrase as it appears in the article. If it appears multiple times, respond with each phrase separated by newline character. If there are no disabilities, respond with NA.

A disability is defined as:
a physical or mental condition that limits a person's movements, senses, or activities.


Abstract:

Abstract Rubinstein–Taybi syndrome ( RTS ) is a chromosomopathy associated to molecular mutations or microdeletions of chromosome 16 . It has an incidence of 1 : 125 , 000–700 , 000 live births . RTS patients present craniofacial and thoracic anomalies that lead to a probable difficult - to - manage airway and ventilation . They also present mental retardation and comorbidity , such as congenital cardiac defects , pulmonary structural anomalies and recurrent respiratory infections , which increase the risk of aspiration pneumonia . Cardiac arrhythmias have been reported after the use of certain drugs such as succinylcholine and atropine , in a higher incidence than in general population . There is an increased risk of postoperative apnea–hypopnea in these patients . We report the anesthetic management in a RTS patient undergoing emergent thoracic surgery due to oesophageal perforation and mediastinitis . Lung isolation was achieved with a bronchial blocker guided with a fiberoptic bronchoscope and one - lung ventilation was performed successfully .
mental retardation