title: Measurement of Central Venous Pressure Using Ultrasound in Emergency Department.
abstract: BACKGROUND
  In order to assessment of intravascular fluid measurement of central venous pressure (CVP) is used via central venous catheterization (CVC). This procedure is highly invasive and may cause serious complications such as pneumothorax, infection, hematoma and etc. It is so valuable procedure if we can uses a less invasive or noninvasive procedure to assess patients intravascular fluid in critical positions.
  
  
  OBJECTIVE
  In this study, the ultrasound was used to measure the central venous pressure (CVP).
  
  
  METHODS
  In this study, patients with Central venous catheterization were selected using simple random sampling. The largest diameter of longitudinal, transverse views and the cross-section of inferior vena cava (IVC) and internal jugular vein (IJV) were measured using the ultrasound in the bedside of the patients. Central venous pressure was measured using routine methods. Correlations between variables were analyzed using SPSS and linear regression.
  
  
  RESULTS
  Twenty patients with the mean age of 60.3 were studied. The main reason for cardiac catheterization was shock. There are no relationship between anterior posterior diameter of inferior vena cava and CVP of patients (P = 0.257). The longest diameter of IVC in ultrasonographic transverse view had significant association with CVP of patients (P = 0.045) but in patients with BMI > 25 it was not significant. Cross section of internal jugular vein had significant association with CVP of patients (P = 0.003). Longitudinal diameter of internal jugular vein had no significant association with CVP of patients (P = 0.052), but transverse diameter of internal jugular generally had significant association with CVP of patients (P = 0.003). Cross section of internal jugular had significant association with CVP (P = 0.001).
  
  
  CONCLUSIONS
  Noninvasive assessment of the patient hydration condition using the ultrasound is a simple and practicable measure in emergency. With regard to the considerations, it is possible to estimate CVP via diameter measurement and cross-section of the central veins.
authors.affiliation: Department of Emergency Medicine, Pre-Hospital Emergency Research Center, Imam Khomeini Hospital , Tehran University of Medical Sciences, Tehran, IR Iran.
authors.forename: Ahmad
authors.initials: A
authors.lastname: Abbasian
authors.affiliation: Department of Emergency Medicine, Hasheminejad Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, IR Iran.
authors.forename: Hamideh
authors.initials: H
authors.lastname: Feiz Disfani
authors.affiliation: Department of Emergency Medicine, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, IR Iran.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Afzalimoghaddam
authors.affiliation: Department of Emergency Medicine, Pre-Hospital Emergency Research Center, Imam Khomeini Hospital , Tehran University of Medical Sciences, Tehran, IR Iran.
authors.forename: Mohammad Taghi
authors.initials: MT
authors.lastname: Talebian
authors.affiliation: Department of Emergency Medicine, Isfahan University of Medical Sciences, Isfahan, IR Iran.
authors.forename: Babak
authors.initials: B
authors.lastname: Masoumi
authors.affiliation: Department of Emergency Medicine, Isfahan University of Medical Sciences, Isfahan, IR Iran.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Nasr-Esfahani
keywords: Central Venous Pressure; Inferior Vena Cava; Internal Jugular Vein