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Uso de ácido tranexámico en el postoperatorio de cirugía cardiaca / Use of tranexamic acid in postoperative cardiac surgery
Gonzalez J., Luciano; Moreno E., Roberto; Vargas R., Claudio; Varas R., Mariana; Ramos G., Mauricio; Chacón A., Renato; Ávila A., Marcela.
  • Gonzalez J., Luciano; Instituto Nacional del Tórax. Santiago. CL
  • Moreno E., Roberto; Instituto Nacional del Tórax. Santiago. CL
  • Vargas R., Claudio; Universidad de Santiago de Chile. Escuela de IngenieríacSantiago. CL
  • Varas R., Mariana; Instituto Nacional del Tórax. Santiago. CL
  • Ramos G., Mauricio; Instituto Nacional del Tórax. Santiago. CL
  • Chacón A., Renato; Instituto Nacional del Tórax. Santiago. CL
  • Ávila A., Marcela; Hospital de Urgencia Asistencia Pública. Santiago. CL
Rev. chil. anest ; 41(2): 103-107, sept.2012. tab
Article in Spanish | LILACS | ID: lil-780333
RESUMEN
El objetivo de este estudio prospectivo, doble ciego y aleatorizado fue evaluar el impacto de la administración de ácido tranexámico (AT) después de cirugía cardiaca con circulación extracorpórea en el sangrado postoperatorio. Material y

Método:

Durante la inducción de la anestesia los pacientes recibieron un bolo de 10 mg•kg-1 de AT, más 50 mg en el cebado de la máquina de circulación extracorpórea, seguido de una infusión continua de 1 mg•kg-1•h-1 hasta el término de la cirugía. En ese momento los pacientes fueron aleatoriamente distribuidos en 2 grupos el grupo control recibió 10 ml•h-1 de suero fisiológico, y el grupo de estudio una dosis de 1 mg•kg-1•h-1 de AT, en ambos casos durante el trascurso de 10 horas. El objetivo primario fue observar alguna diferencia en el sangrado durante el primer día de postoperatorio. El objetivo secundario fue observar alguna diferencia en la transfusión de sangre (glóbulos rojos, plaquetas) durante el primer día del postoperatorio y en la incidencia de reoperaciones. Tanto el anestesista como el cirujano fueron ciegos a la distribución de los pacientes en cada grupo. Se utilizó el t-test para el análisis de diferencias en las medias de las variables continuas y el z-test para las proporciones. Se consideró estadísticamente significativo un valor de p < 0,05. Se efectuó análisis de regresión múltiple para encontrar variables capaces de predecir sangrado durante el primer día postoperatorio...
ABSTRACT
The objective of this prospective, double blind, randomized trial is to evaluate the impact of tranexamic acid (TA) administration after cardiac surgery with cardiopulmonary bypass in postoperative bleeding. Materials and

Methods:

During induction of general anesthesia, patients received a bolus of TA of 10 mg•kg-1 plus 50 mg in the CPB priming followed by a continuous infusion of 1 mg•kg-1•h-1 until the end of the surgery. Then, patients were randomly allocated into one of two groups the isotonic saline (IS) group received 10 ml•h-1 of isotonic saline and the TA group received an infusion of 1 mg•kg-1•h-1 of TA. Both groups received their infusions for 10 hours. Primary outcome was bleeding during first postoperative day (POD1). Secondary outcomes were blood transfusion (PRBC, platelets) during POD1 and surgical re-exploration. Anesthesiologists and surgeons were blind to patient allocation. A t-test was used to analyze differences in means of continuous variables and z-test for proportions. A p value < 0.05was considered statistically significant. Multiple regression analysis was performed to find variables able to predict bleeding in the POD1.

Results:

273 patients were included, there were 15 lost per group. 125 patients in the TA group and 118 patients in the IS group were analyzed. Both groups were compared in their demographics characteristics, comorbidity and lab tests and no significant differences were found. No statistically significant differences between groups in the primary and secondary outcomes were found. Multiple regression analysis establishes the variable minutes in cardiopulmonary bypass was able to predict bleeding in the POD1.

Conclusions:

Postoperative infusion of TA does not decrease bleeding, transfusions and re-explorations during the POD1 of cardiac surgery with cardiopulmonary bypass...
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Thoracic Surgery / Tranexamic Acid / Postoperative Hemorrhage / Extracorporeal Circulation / Antifibrinolytic Agents Type of study: Controlled clinical trial / Diagnostic study / Observational study / Prognostic study Limits: Female / Humans / Male Language: Spanish Journal: Rev. chil. anest Journal subject: Anesthesiology Year: 2012 Type: Article Affiliation country: Chile Institution/Affiliation country: Hospital de Urgencia Asistencia Pública/CL / Instituto Nacional del Tórax/CL / Universidad de Santiago de Chile/CL

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Full text: Available Index: LILACS (Americas) Main subject: Thoracic Surgery / Tranexamic Acid / Postoperative Hemorrhage / Extracorporeal Circulation / Antifibrinolytic Agents Type of study: Controlled clinical trial / Diagnostic study / Observational study / Prognostic study Limits: Female / Humans / Male Language: Spanish Journal: Rev. chil. anest Journal subject: Anesthesiology Year: 2012 Type: Article Affiliation country: Chile Institution/Affiliation country: Hospital de Urgencia Asistencia Pública/CL / Instituto Nacional del Tórax/CL / Universidad de Santiago de Chile/CL