title: Progressive loss in circulating volume during haemodialysis can be monitored by time voltage integral area of QRS complex: pilot study.
abstract: BACKGROUND
  Time voltage area of QRS is a parameter that showed a close association with modifications in endoventricular volume. The aim of the study was to investigate the efficacy of this parameter in identifying progressive reduction in circulating blood volume (BV) during haemodialytic treatment (HT).
  
  
  METHODS
  Thirteen uraemic patients were studied. XYX like leads were monitored before, during and after HT. Summation of areas of each QRS complex was named QRS total area (TA).
  
  
  RESULTS
  Increase in QRS TA and decrease in BV were found after vs. before HT. Progressive increase in QRS TA is strongly linked to a progressive reduction of BV during HT.
  
  
  CONCLUSIONS
  THESE FINDINGS ENCOURAGE USE OF ECG MONITORING DURING HT WITH A DUAL PURPOSE: rhythm and haemodynamic control. In fact, excessive or insufficient subtractions of water, with consequent hypotensive or cardiorespiratory crisis, are the most frequent complications in these patients.
authors.affiliation: Department Internal Medicine and Medical Specialities - University "Sapienza", University of Rome, Italy.
authors.forename: Mario
authors.initials: M
authors.lastname: Curione
authors.forename: Claudia
authors.initials: C
authors.lastname: Castro
authors.forename: Camillo
authors.initials: C
authors.lastname: Cammarota
authors.forename: Gianfranco
authors.initials: G
authors.lastname: Tonnarini
authors.forename: Marzia
authors.initials: M
authors.lastname: Pasquali
keywords: QRS area; circulating volume; haemodialysis