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Drain clamping in knee arthroplasty, a randomized controlled trial
Eden Raleigh1, Caroline B Hing, Andrew S Hanusiewicz
1Department of Orthopaedics, Alfred Hospital, Melbourne, Victoria, Australia. edenraleigh@hotmail.com
ANZ Journal of Surgery
|May 15, 2007
Summary
Intermittent clamping of suction drains after total knee arthroplasty significantly reduces external blood loss compared to continuous suction. This method is safe, with no increase in complications or transfusion needs.
Area of Science:
- Orthopedic Surgery
- Surgical Drainage Management
Background:
- Total knee arthroplasty (TKA) often involves surgical drains to manage fluid accumulation.
- Optimizing drainage protocols is crucial for patient recovery and minimizing complications.
Purpose of the Study:
- To compare the efficacy of intermittent clamping versus continuous suction drainage in TKA.
- To assess impact on external blood loss, transfusion requirements, and complications.
Main Methods:
- A randomized prospective study involving 66 patients undergoing TKA.
- Group A: Intermittent drain clamping (clamped except for 5 min or 100 mL drainage every 2h for 6h, then at 12h and 24h).
- Group B: Routine continuous suction drainage.
Main Results:
- The intermittent clamping group (Group A) had significantly less mean external blood loss (296.67 mL) compared to the continuous suction group (Group B) (796 mL) (P < 0.05).
- Mean drain in situ time was similar between groups (32h vs. 34h).
- No significant difference in transfusion requirements was observed between the groups.
Conclusions:
- Intermittent clamping of surgical drains in TKA leads to substantially reduced external blood loss.
- This drainage method does not increase morbidity or mortality, offering a safe alternative.
- The study provides Level 1 evidence (randomized controlled trial) supporting intermittent drain clamping.