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  Indian J Med Microbiol
 

Figure 2: Plethora of inferior vena cava. The presence of a dilated inferior vena cava with less than 50% collapse on forced inspiration, or sniff, correlates with an elevated central venous pressure and confirms tamponade physiology

Figure 2: Plethora of inferior vena cava. The presence of a dilated inferior vena cava with less than 50% collapse on forced inspiration, or sniff, correlates with an elevated central venous pressure and confirms tamponade physiology