Identify factors that contribute to perioperative morbidity and mortality in patients undergoing cardiac surgery that involves cardiopulmonary bypass.

Identify factors that affect perioperative morbidity and mortality in patients undergoing cardiac surgery.

Identify factors that affect perioperative morbidity and mortality in patients undergoing cardiac surgery.

Here are some examples, but may not limited the following factors:

1. demographic data
2. perioperative medications
3. comorbidity

Inclusion Criteria:

Patients greater than or equal to 18 years old that underwent cardiovascular surgery at UC Davis Medical Center from 01/01/2001 to 07/15/2013.

Patients will only be included that underwent cardiovascular surgeries with or without cardiopulmonary bypass.

Exclusion Criteria:

Patients that did not undergo cardiovascular surgeries and age< 18 years old will be excluded from the study.

patients undergoing cardiovascular surgeries