Perioperative medicine & outcomes

Association Between Intraoperative Dexamethasone and Postoperative Mortality in Patients Undergoing Oncologic Surgery: A Multicentric Cohort Study

Ann SurgPublished Retrospective cohort study

Authors' conclusion

Dexamethasone is associated with decreased 1-year mortality and cancer recurrence in patients undergoing surgical resection of cancers that are not candidates for immune modulators. Dexamethasone increased the risk of postoperative hyperglycemia, however, no increase in surgical site infections was identified.

Study context

Population
Adults undergoing solid cancer resection, 2005–2020
Participants
30,561 adults
Exposure
Intraoperative dexamethasone vs no dexamethasone
  • Dexamethasonen = 11,666
Outcome
Mortality and recurrence-free survival
Follow-up
1 year
Methodological detailsmultivariable logistic regression, interaction term analysis
  • Multivariable logistic regression
  • Interaction term analysis

Main finding

As reported in the abstract

1-year mortality
Each group vs no dexamethasoneRisk reduction (95% CI)P value
Dexamethasone
−0.6%(−1.1 to −0.2)
P = 0.007
Each group vs no dexamethasoneEstimate (95% CI)P value
Dexamethasone
aOR 0.79(0.67–0.94)
P = 0.009
Dexamethasone
HR 0.82(0.69–0.96)
P = 0.016
Overall 1-year mortality
3.2%

Observational data: associations, not effects.

Further findings

OutcomeEstimateP value
Recurrence-free survival · 1 yearHigher odds of recurrence-free survivalaOR for recurrence-free survival (higher = better) 1.28 (CI 1.18–1.39)P < 0.001
1-year mortality, cancers not responsive to checkpoint inhibitor therapy (subgroup)Effect modification by interaction term analysisaOR for death 0.70 (CI 0.57–0.87)P = 0.001
1-year mortality, cancers responsive to checkpoint inhibitor therapy (subgroup)Effect modification by interaction term analysisaOR for death 1.13 (CI 0.85–1.50)P = 0.40

Safety

OutcomeaOR (CI)P value
Hyperglycemia >180 mg/dL within 24 h (high dose >0.09 mg/kg) · high (>0.09 mg/kg) dose1.55 (1.32–1.82)P < 0.001
Surgical site infections within 30 days (high dose >0.09 mg/kg)High (>0.09 mg/kg) dose0.84 (0.42–1.71)P = 0.63

Original publication

Association Between Intraoperative Dexamethasone and Postoperative Mortality in Patients Undergoing Oncologic Surgery: A Multicentric Cohort Study. Ann Surg. Published 18 July 2022. doi:10.1097/sla.0000000000005526

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