ARTHROPLASTY
No effect of fibrin sealant on drain output or functional recovery following simultaneous bilateral total knee arthroplasty
OrthoEvidence Journal (OE Journal) - ACE Report
OE Journal. 2013;1(8):6 Acta Orthop. 2013 Apr;84(2):153-8. doi: 10.3109/17453674.2013.769082. Epub 2013 Jan 2524 patients (48 knees) undergoing simultaneous bilateral total knee arthroplasty (TKA) had their knees 1:1 randomized to receive an intraoperative application of either fibrin sealant or saline. The purpose was to determine the adjuvant effect of fibrin sealant on postoperative blood loss in patients already treated with preoperative tranexamic acid and tourniquet use. Blood loss was calculated 24 hours following surgery, and patients were assessed for functional recovery up to 21 days postoperatively. The findings indicated that there was no decrease in blood loss in knees treated with fibrin sealant, and that pain, swelling, range of motion, and isokinetic strength was similar between knees, regardless of the application of fibrin sealant or saline.
Was the allocation sequence adequately generated?
Was allocation adequately concealed?
Blinding Treatment Providers: Was knowledge of the allocated interventions adequately prevented?
Blinding Outcome Assessors: Was knowledge of the allocated interventions adequately prevented?
Blinding Patients: Was knowledge of the allocated interventions adequately prevented?
Was loss to follow-up (missing outcome data) infrequent?
Are reports of the study free of suggestion of selective outcome reporting?
Were outcomes objective, patient-important and assessed in a manner to limit bias (ie. duplicate assessors, Independent assessors)?
Was the sample size sufficiently large to assure a balance of prognosis and sufficiently large number of outcome events?
Was investigator expertise/experience with both treatment and control techniques likely the same (ie.were criteria for surgeon participation/expertise provided)?
はい = 1
不確実＝0.5
無関係 = 0
いいえ = 0
報告基準評価では、著者が出版物内で試験の方法論的特徴や試験特性を報告する際の透明性を評価します。評価は以下の5つのカテゴリーに分類されます。
4/4
Randomization
3/4
Outcome Measurements
2/4
Inclusion / Exclusion
4/4
Therapy Description
4/4
Statistics
Detsky AS, Naylor CD, O'Rourke K, McGeer AJ, L'Abbé KA. J Clin Epidemiol. 1992;45:255-65
Fragility Indexは、重要な所見の解釈を助けるツールで、結果の強さの尺度を提供します。Fragility Indexは、その所見が有意でなくなるために、二項対立の結果に追加する必要がある連続した事象の数を表します。数値が小さいほど弱い所見を表し、数値が大きいほど強い所見を表します。
なぜ今この研究が必要なのですか？
Postoperative blood loss following total knee arthroplasty (TKA) may be associated with significant morbidity and impaired functional recovery. There have been many developments in stemming blood loss following surgery, one of which is a topical application of fibrin sealant. While the hemostatic agent has been investigated in prior studies, there is limited evidence of its effect as an adjunct to other blood loss regimens (ie. tranexamic acid, intramedullary femoral canal plugging), as well as its effect on functional recovery.
主な研究課題は何ですか？
What is the effect of adjuvant fibrin sealant on postoperative blood loss and early functional recovery following total knee arthroplasty, with blood loss measured within the first 24 postoperative hours and function assessed up to 21 days postoperatively?
重要な知見は？
- Mean blood loss calculated from drains at 24h postoperatively was 582mL (SD 328mL) for knees allocated to the fibrin sealant and 576mL (SD 289mL) in knees treated with saline (p=0.9).
- There was no significant difference in pain between groups either at rest or during flexion at any time-point (all p>0.05).
- Knee swelling did not significantly differ between groups at any assessment (p>0.05).
- ROM assessment of both flexion and extension were observed to be similar between groups at each time point, with no significant differences being observed (all P>0.05).
- Isometric knee strength was similarly reduced from baseline at day 3 assessment in both groups, with gradual recovery. Recovery by day 21 was still lower that preoperative values. There were no significant differences between groups at any of the assessments (all P>0.05).
最も覚えておくべきことは？
The use of the fibrin sealant, Evicel, in total knee arthroplasty did not reduce blood loss, nor promote any benefit in functional recovery when compared to placebo treatment with saline in the contralateral knee.
それが私の患者ケアにどのように影響するか？
The results of the present study do not support the application of adjuvant fibrin sealant as a means to stem postoperative blood loss following total knee arthroplasty. However, there was concern that hyperemia caused by the deflation of the tourniquet may have flushed out the fibrin sealant prior to eliciting any potential effect. It may be worthwhile to determine if there is an effect of Evicel in the absence of tourniquet use.
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