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ResumoObjetivosAvaliar o sangramento através do dreno suctor (DS) e a perda sanguínea estimada em pacientes submetidos à artroplastia total do joelho (ATJ) com DS de diferentes calibres (3,2mm e 4,8mm).MétodosEnsaio clínico randomizado com 22 pacientes submetidos à ATJ, divididos em dois grupos; no grupo I, os pacientes recebiam o DS 3,2mm e no Grupo II, o DS 4,8mm. O hematócrito foi aferido 24, 48 e 72 horas após a cirurgia, a fim de calcular a perda sanguínea estimada. O débito do dreno foi medido 3, 6, 12, 24 e 48 horas após a ATJ e os dois grupos foram comparados.ResultadosEm relação ao hematócrito, não se observaram diferenças estatisticamente significativas entre os grupos nos períodos aferidos (24, 48 e 72 horas pós‐operatória). O sangramento total medido no DS nas 48 horas foi maior no grupo II, com diferença estatisticamente significativa (p=0,005); nas primeiras 24 horas, houve maior sangramento no grupo II (média 893mL), com diferença significativa (p=0,004). Entre 24 e 48 horas, não foram observadas diferenças estatisticamente significativas em ambos os grupos (p=0,710). O sangramento total estimado foi maior no Grupo I, com média de 463mL, enquanto no Grupo II esse valor foi de 409mL, sem significância estatística (p=0,394).ConclusõesO sangramento foi maior no grupo que usou DS 4,8mm, sem diferenças no hematócrito e na perda sanguínea estimada.AbstractObjectivesTo evaluate bleeding and the estimated blood loss in patients who underwent total knee replacement (TKR) with different closed suction drains (3.2 mm‐and 4.8 mm‐gauge).MethodsThis was a randomized controlled trial with 22 patients who underwent TKR and were divided into two groups: group I, with 11 patients in whom the 3.2‐mm suction drain was used, and group II, with 11 patients in whom the 4.8‐mm suction drain was used. The hematocrit was measured after 24, 48 and 72hours after surgery in order to calculate the estimated blood loss. The drained volume was measured 3, 6, 12, 24, and 48hours after TKR, and thereafter both groups were compared.ResultsRegarding the hematocrit, there were no differences between groups in measured periods (24, 48, and 72hours after surgery). The total bleeding measured at the suction drains within 48hours was higher in group II, with a statistically significant difference (p=0.005); in the first 24hours, there was major bleeding in group II (mean 893mL), with a significant difference (p=0.004). Between 24 and 48hours, there was no statistically significant difference in both groups (p=0.710). The total estimated bleeding was higher in Group I, with mean of 463mL, versus 409mL in Group II, with no statistical significance (p=0.394).ConclusionsBleeding was higher in the group that used the 4.8mm gauge suction drain, with no differences in hematocrit and estimated blood loss

A espessura do dreno suctor importa? Análise do sangramento após artroplastia total do joelho comparando drenos suctores de diferentes calibres