Compared with the group with ICU stay less than 7 days, patients of the group with ICU stay longer than 7 days were more likely to have respiratory failure, sepsis, and high use ratio of nitroglycerin, and increased levels of blood glucose, creatinine, Bun, WBC, calcium, lactic acid value, and decreased level of albumin value (all P<0.05). Here, ALB is linked to Sepsis.