title: [Intraoperative diastolic dysfunction as a risk factor for hemodynamic instability].
abstract: BACKGROUND
  Diastolic function can be evaluated intraoperatively using transesoptiageal echocardiography.
  
  
  OBJECTIVE
  To study if intraoperative diastolic dysfunction is associated to a greater number of hemodynamic events during surgery and during the postoperative period.
  
  
  METHODS
  Patients with indication of intraoperative transesophageal echocardiography due to cardiovascular diseases were included in the study. Diastolic function was assessed measuring transmitral intraventricular filling delay and pulmonary vein now. Patients were divided, according to diastolic dysfunction, in those with derangements in relaxation, pseudonormalization and restrictive patterns. Hypertension, hypotension, ST segment depression, alterations in myocardial contractility, pulmonary congestion and postoperative oliguria were recorded.
  
  
  RESULTS
  Fifty eight patients aged 68+/- 12 years (39 males), were studied. Forty four had diastolic dysfunction. Intraoperative hypotension occurred in 82% of patients with diastolic dysfunction and 16% of patients without it. Likewise, hypotension and oliguria during the postoperative period were more common in patients with diastolic dysfunction.
  
  
  CONCLUSIONS
  In this group of patients with cardiovascular disease, intraoperative diastolic dysfunction is a risk factor for hemodynamic instability.
authors.affiliation: Departamento de Anestesiología, Hospital Clínico, Fuerza Aérea de Chile, Chile. carol218@vtr.net
authors.forename: María Carolina
authors.initials: MC
authors.lastname: Cabrera S
authors.forename: Silvia
authors.initials: S
authors.lastname: Schmied P
authors.forename: Raúl
authors.initials: R
authors.lastname: Vega S
authors.forename: Irini
authors.initials: I
authors.lastname: Semertzakis P
authors.forename: Jaime
authors.initials: J
authors.lastname: De La Maza C
mesh_terms: D000368:Aged; D017548:Echocardiography, Transesophageal; D005260:Female; D006801:Humans; D006973:Hypertension / Q000000981:diagnostic imaging / Q000503:physiopathology; D007022:Hypotension / Q000000981:diagnostic imaging / Q000503:physiopathology; D007430:Intraoperative Care / Q000379:methods*; D007431:Intraoperative Complications / Q000000981:diagnostic imaging* / Q000503:physiopathology; D008297:Male; D009846:Oliguria / Q000000981:diagnostic imaging / Q000503:physiopathology; D011237:Predictive Value of Tests; D012307:Risk Factors; D013514:Surgical Procedures, Operative / Q000009:adverse effects*; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging* / Q000503:physiopathology