Kavous Shahsavarinia 
1 
, Peyman Habibi 
2, Ali Taghizadieh 
3, Payman Moharamzadeh 
4, Farzad Rahmani 
4, Tahmoures PourSafar 
4, Neda Gilani 
5*  1
1 Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
2 Healthy Ageing Research Center, Neyshabur Univerdity of Medical Sciences, Neyshabur, Iran
3 Tuberculosis and Lung Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
4 Emergency Medicine Research Team, Tabriz University of Medical Sciences, Tabriz, Iran
5 Department of Statistics and Epidemiology, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
        
	
        
        
Abstract
            
  Background: Intravascular volume is the most important factor in determining  patients' hemodynamic status. This present study aimed to assay the predictive  value of aorta artery diameter and inferior vena cava (IVC) diameter in trauma  patients with hemorrhagic shock.
  Materials and Methods: This was a cross-sectional study conducted on 69 trauma patients  who referred to Imam Reza Hospital in Tabriz. Inclusion criteria were all  trauma patients with hemorrhagic shock. Patients with diseases such as liver  disease,cardiovascular,coronary heart disease and concurrent dehydration were  excluded. Odds ratios and Adjusted odds ratios  for the risk of events were obtained using cumulative logit ordinal regression  model with version 15 of Stata software.
  Results: There were 58 men (84/1%) and 11 women (15/9%) with an average age  of  36.4±12.4 year. Findings showed that  for one unit increase in the diameter of the aorta by controlling the effect of  other variables, the odds of mortality decreased for 2% compared with  hospitalization in ward or intensive care unit (ICU). The reduction was also  statistically significant (P=0.037). Furthermore, by modifying the effect of  other variables, one unit increase in the diameter of IVC during inhale and  exhale, increases the odds of hospitalization in ward or ICU.
  Conclusion: This study  showed that the diameter of the aorta and also the diameter of IVC during  inhale and exhale can be used to predict the outcome of trauma patients with  hemorrhagic shock and eventually to take steps  for emergent and effective treatment.