title: Correlation between central venous pressure and peripheral venous pressure with passive leg raise in patients on mechanical ventilation.
abstract: BACKGROUND
  Central venous pressure (CVP) assesses the volume status of patients. However, this technique is not without complications. We, therefore, measured peripheral venous pressure (PVP) to see whether it can replace CVP.
  
  
  OBJECTIVE
  To evaluate the correlation and agreement between CVP and PVP after passive leg raise (PLR) in critically ill patients on mechanical ventilation.
  
  
  METHODS
  Prospective observational study in Intensive Care Unit.
  
  
  METHODS
  Fifty critically ill patients on mechanical ventilation were included in the study. CVP and PVP measurements were taken using a water column manometer. Measurements were taken in the supine position and subsequently after a PLR of 45°.
  
  
  METHODS
  Pearson's correlation and Bland-Altman's analysis.
  
  
  RESULTS
  This study showed a fair correlation between CVP and PVP after a PLR of 45° (correlation coefficient, r = 0.479; P = 0.0004) when the CVP was <10 cmH2O. However, the correlation was good when the CVP was >10 cmH2O. Bland-Altman analysis showed 95% limits of agreement to be -2.912-9.472.
  
  
  CONCLUSIONS
  PVP can replace CVP for guiding fluid therapy in critically ill patients.
authors.affiliation: Department of Anaesthesiology, JN Medical College, AMU, Aligarh, Uttar Pradesh, India.
authors.forename: Dharmendra
authors.initials: D
authors.lastname: Kumar
authors.affiliation: Department of Anaesthesiology, JN Medical College, AMU, Aligarh, Uttar Pradesh, India.
authors.forename: Syed Moied
authors.initials: SM
authors.lastname: Ahmed
authors.affiliation: Department of Anaesthesiology, JN Medical College, AMU, Aligarh, Uttar Pradesh, India.
authors.forename: Shahna
authors.initials: S
authors.lastname: Ali
authors.affiliation: Baharampur Medical College, West Bengal, India.
authors.forename: Utpal
authors.initials: U
authors.lastname: Ray
authors.affiliation: Department of Anaesthesiology, JN Medical College, AMU, Aligarh, Uttar Pradesh, India.
authors.forename: Ankur
authors.initials: A
authors.lastname: Varshney
authors.affiliation: Department of Anaesthesiology, JN Medical College, AMU, Aligarh, Uttar Pradesh, India.
authors.forename: Kashmiri
authors.initials: K
authors.lastname: Doley
keywords: Central venous pressure; correlation; mechanical ventilation; passive leg raise; peripheral venous pressure