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The Association of Preoperative Hematocrit With Adverse Events Following Exploratory Laparotomy in Septic Patients: A Retrospective Analysis.
Journal of Intensive Care Medicine 2022 January
BACKGROUND: Sepsis continues to be the leading cause of death in intensive care units and surgical patients comprise almost one third of all sepsis patients. Anemia is a modifiable risk factor for worse postoperative outcomes in sepsis patients. Here we aim to evaluate the association of preoperative anemia and postoperative mortality in sepsis patients undergoing exploratory laparotomy.
METHODS: The National Surgical Quality Improvement Program registry was used to query for preoperative sepsis patients undergoing exploratory laparotomy between 2014 and 2016. Preoperative hematocrit was stratified into 4 categories: ≥30% to polycythemia, <21%, 21 and less than 30%, and polycythemia. The primary outcome was 30-day mortality. Multivariable logistic regression was used to evaluate the association of preoperative hematocrit with primary and secondary endpoints. The multivariable analysis included preoperative hematocrit, gender, age, BMI, smoking status, functional status, hypertension, steroid use, bleeding disorder, and sepsis. The odds ratio (OR) with associated 95% confidence interval (CI) is reported for all outcomes. A p-value of less than <0.05 was considered statistically significant.
RESULTS: The unadjusted 30-day death rate was the highest for patients with preoperative hematocrit <21% (p < 0.001) compared to the other hematocrit cohorts. The odds of 30-day death was significantly increased for patients with preoperative hematocrit <21% (OR 2.39 95% CI: 1.28-4.49, p = 0.006) and 21-30% (OR 1.35, 95% CI: 1.05 -1.72, p = 0.017) compared to patients with preoperative hematocrit of ≥30% and less than polycythemic ranges (reference cohort).
CONCLUSION: Preoperative anemia in sepsis patients undergoing surgery can lead to increased mortality, postoperative complications, and length of hospital stay. Diagnosing sepsis early in the hospital course can allow physicians more time to titrate anticoagulation medications and treat preoperative anemia.
METHODS: The National Surgical Quality Improvement Program registry was used to query for preoperative sepsis patients undergoing exploratory laparotomy between 2014 and 2016. Preoperative hematocrit was stratified into 4 categories: ≥30% to polycythemia, <21%, 21 and less than 30%, and polycythemia. The primary outcome was 30-day mortality. Multivariable logistic regression was used to evaluate the association of preoperative hematocrit with primary and secondary endpoints. The multivariable analysis included preoperative hematocrit, gender, age, BMI, smoking status, functional status, hypertension, steroid use, bleeding disorder, and sepsis. The odds ratio (OR) with associated 95% confidence interval (CI) is reported for all outcomes. A p-value of less than <0.05 was considered statistically significant.
RESULTS: The unadjusted 30-day death rate was the highest for patients with preoperative hematocrit <21% (p < 0.001) compared to the other hematocrit cohorts. The odds of 30-day death was significantly increased for patients with preoperative hematocrit <21% (OR 2.39 95% CI: 1.28-4.49, p = 0.006) and 21-30% (OR 1.35, 95% CI: 1.05 -1.72, p = 0.017) compared to patients with preoperative hematocrit of ≥30% and less than polycythemic ranges (reference cohort).
CONCLUSION: Preoperative anemia in sepsis patients undergoing surgery can lead to increased mortality, postoperative complications, and length of hospital stay. Diagnosing sepsis early in the hospital course can allow physicians more time to titrate anticoagulation medications and treat preoperative anemia.
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