Objective: To determine the frequency of interruption of the dialysis therapy from January 2012 until July 2013 of patients the National Hospital “2 de Mayo” –nephrology services. Material and methods: Monitoring was performed. Of 190 patients evaluated in our monitoring 84 (44.21 %) abandoned. Results: Dialysis interruption was related to a prescription of dialysis start of less than 6 months OR: 6.27 (p= 0.011). Conclusions: We conclude that the frequency of dialysis interruption is high, possibly associated to the lack of dialysis vacancies.