Pain medicine

Prolonged effects of dexamethasone following total knee arthroplasty: A pre‐planned sub‐study of the DEX‐2‐total knee arthroplasty (TKA) trial

Acta Anaesthesiol ScandPublished Secondary analysis of the DEX-2-TKA randomised trial

Authors' conclusion

We found that neither one nor two doses of 24 mg intravenous dexamethasone demonstrated prolonged effects on overall pain or sleep quality on postoperative days 3-7 after total knee arthroplasty. We also found that dexamethasone had no effect on patient satisfaction.

Study context

Population
Adults after total knee arthroplasty, five Danish hospitals434 analysed
Participants
485 adults
Comparison
Dexamethasone 24 mg IV one dose or two doses vs placebo
Primary endpoint
Average of all numerical rating scale (NRS) pain scores (morning, bedtime, daily average)
Follow-up
POD 3-7
Methodological detailsprospective, pre-planned sub-study, questionnaire follow-up, multicentre, placebo-controlled
  • Prospective
  • Pre-planned sub-study
  • Questionnaire follow-up
  • Multicentre
  • Placebo-controlled

Primary result

As reported in the abstract

DX2

3.2

median · IQR 2.1–4.3

DX1

3.3

median · IQR 2.3–4.1

Placebo

3.3

median · IQR 2.5–4.7

Hodges-Lehmann median difference (95% CI)P value
DX1 vs DX2
0.1(−0.47 to 0.33)
P = 0.87
DX2 vs Placebo
0.1(−0.6 to 0.13)
P = 0.20
DX1 vs Placebo
Hodges-Lehmann median difference 0 (95% CI - 0.54 to 0.2); P = 0.38

Secondary outcomes

Sleep quality · POD 3-7

No relevant differences between groups

Patient satisfaction with analgesic treatment

No relevant differences between groups

Original publication

Prolonged effects of dexamethasone following total knee arthroplasty: A pre‐planned sub‐study of the DEX‐2‐TKA trial. Acta Anaesthesiol Scand. Published 14 September 2023. doi:10.1111/aas.14319

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