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Is it common for a vein to blow out while having a cat scan with dye through iv and or why would a vein blow out after the iv was already in and blew out during scan after dye was put through?
Wiki User
∙ 11y ago
It is uncommon, however, it is not unusual.
Veins are more fragile than arteries because they have to allow the blood to travel through them at much lower pressures than in arteries. Veins are normally exposed to pressures ranging from about 10-15mmHg in the thorax to about 90mmHg in the lower limbs, compared to pressures above 100mmHg.
In a Cat scan, depending on the study required, iv dye is pushed through either as a bolus at low pressure (for a contrast study) at a venous phase or at a higher pressure (for an angiogram study) which is used to look at arterial phase.
If the pressure used to push the dye through exceeds the capacity of the vein then the vein will blow out. It is difficult to predict whether this will happen although it usually does not happen.
Wiki User
∙ 11y ago
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