Abstract:
Objective: To assess the correlation between inferior vena cava(IVC) diameter and central venous pressure (CVP) in critical
patients admitted in ICU.
Study Design and Setting: The cross-sectional pilot study was conducted at Radiology Department of PNS SHIFA Hospital.
Methodology: 18-80 years patients were included and patients with severe orthopnea, unable to lie in supine position,
morbid obese, pneumothorax, mass in mediastinum, tricuspid regurgitation and intra-cerebral bleeds were excluded.
Results: The mean age of 50 patients was 41.44±16.73 years. Mean measurement of CVP was considered as 10.41±4.18
mm. Mean diameter of IVC was 12.65±2.22 mm. The study results showed weak negative correlation between the CVP
and IVC (r= - 0.110, p=0.04). It was also predicted that patients with age =50 years showed weak negative correlation
between the CVP and IVC (r=-0.290, p=0.034). Similarly, in patients with age >50 years there was strong negative correlation
between CVP and IVC (r=-0.680, p=0.045). The study results also showed that in male patients there was weak negative
correlation between the CVP and IVC i.e. (r=-0.045, p=0.048). However, in female patients there was moderate positive
correlation (r=0.685, p=0.001).
Conclusion: Weak negative correlation was found between inferior vena cava diameter on ultrasonography and central
venous pressure measurement among critically ill patients.