title: [Abnormal pre-surgical tests and their association with tramp-surgical hemorrhagic complication in elective surgery].
abstract: OBJECTIVE
  To determine whether abnormal preoperative coagulation tests (PCT) are related to trans-surgical bleeding complication (TSBC) during elective surgical procedures.
  
  
  METHODS
  Adult patients, undergone some elective surgical procedure in a tertiary care medical center, in Merida, Yucatan, Mexico in whom TSBC was looked for, were selected in a non-random fashion and included. TSBC was considered when bleeding in the surgical bed was > or =300 ml. Prothrombin time (PT) and partial thromboplastin time (PTT) were the PCT measured and compared against TSBC. To analyze data, inferential statistics was used.
  
  
  RESULTS
  Eighty four males (49%) and 86 females (51%), were included. PT, PTT or both were requested to 100% of the them. PT was prolonged in 26 (15%), and PTT was prolonged in 14 (8%) patients. TSBC was documented in 30 patients (18%), although among those with and without bleeding, neither PT averages difference (P=0.76), nor PTT averages difference (P= 0.83), were statistically significant. In comparing TSBC and its relationship to abnormal PCT, again neither PT nor PTT were associated with bleeding (Fisher's exact tests for each: P= 0.41 and P= 1.0, respectively).
  
  
  CONCLUSIONS
  In this sample, abnormal PCT were not associated with TSBC.
authors.affiliation: Maestro en Ciencias de la Salud, médico internista adscrito al Hospital de Especialidades del Centro Médico Nacional, Licenciado Ignacio García Téllez, Instituto Mexicano del Seguro Social, Mérida, Yucatán. durannah@prodigy.net.mx
authors.forename: Jaime Jesús
authors.initials: JJ
authors.lastname: Durán-Nah
authors.forename: Luis Antonio
authors.initials: LA
authors.lastname: Aké-Poot
authors.forename: Clara
authors.initials: C
authors.lastname: Gómez-Vázquez
authors.forename: Ricardo Esteban
authors.initials: RE
authors.lastname: Kim-Barrera
authors.forename: María
authors.initials: M
authors.lastname: De la Cruz-Muñoz
authors.forename: Patricia
authors.initials: P
authors.lastname: Moscoso-González
authors.forename: Alejandra
authors.initials: A
authors.lastname: Rodríguez-Burían
mesh_terms: D000328:Adult; D000368:Aged; D001780:Blood Coagulation Tests; D016063:Blood Loss, Surgical / Q000706:statistics & numerical data; D017558:Elective Surgical Procedures; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019106:Postoperative Hemorrhage / Q000453:epidemiology