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Table 2 IPPV requirements and length of stay data 2010 to 2011 2013 to 2014.

From: Early postoperative use of CPAP reduces need for unplanned IPPV in elective vascular patients

  2010 to 2011   2013 to 2014  
IPPV LOS ITU (days) LOS hospital (days) IPPV LOS ITU (days) LOS hospital (days) EVAR
2/67 (3%) 2 6 1/77 (1.3%) 2 5 AAA
10/46 (21.7%) 5 9 6/37 (16.2%) 5 12