A dietitian at Harlem Hospital managed to keep his job for two years despite making mind-boggling mistakes, including prescribing a regular diet for an intubated patient, new court papers say.

Miguel Triana, 61, made serious mistakes in assessing 12 patients, according to an administrative law judge with the city’s Office of Administrative Trials and Hearings.

Between 2014 and 2015, Triana “committed egregious errors,” the judge wrote last month in a decision siding with NYC Health + Hospitals.

Triana’s errors included “repeatedly recommending oral diets for patients who were on ‘nothing by mouth’ status,” the judge said.

Other errors included “recommending a tube feeding formula with insufficient calories for a patient who was severely malnourished, and repeatedly failing to note or address alarming weight change for three different patients.”