Many of our trauma protocols specify two IVs, often large-bore, for patients with injuries and known or suspected significant hemorrhage. The thought behind this is that more blood loss necessitates a greater ability to deliver volume than one IV can accomplish.

Why would you need a large bore IV?

Ensuring large bore intravenous access during the resuscitative phase of a trauma patient's treatment for timely delivery of resuscitation fluids is required for definitive treatment. ... Faster infusion of blood and blood products allows for rapid and quality resuscitation to avoid the pitfalls of haemorrhage.

What is a large bore catheter used for?

There are several large bore vascular access devices available for rapid fluid and blood administration in trauma and resuscitation settings, and depending on which country you are in, and where you work, these devices may be referred to by different names.