Patients
A total of 68 patient charts met inclusion criteria: patient demographics were summarized in Table 2. Of the 68 patients, 37 were male and 31 were female. Most patients were Hispanic followed by Caucasian then Native American at 50%, 34%, and 19%, respectively. Many of the patients were older than a year (74%), in which more than half of those were greater than 10 years (60%). One third of the patients were considered critical care status, defined as admittance to the pediatric intensive care unit at the start of enoxaparin. Only 7% of patients had acute kidney injury (AKI), defined as a creatinine increase by greater than 0.3 from baseline, more than 1.5-1.9 times the baseline value, or urine output less than 0.5 ml/kg/hr for 6-12 hours at the start of the first enoxaparin dose.15