Ultrasound Guidance for Intravenous Cannulation in Emergency Department Patients.

Ultrasound-Guided Peripheral Intravenous Cannulation in Emergency Department Patients With Difficult IV Access: a Randomized Trial.

A randomized trial of the use of ultrasound by emergency physicians in the placement of intravenous catheters in emergency patients who are found to have difficult intravenous access (defined as two failed attempts by nursing staff).

Inclusion Criteria:

• patients requiring an IV in the emergency department and who have two failed attempts by nursing staff

Exclusion Criteria:

• emergent need for IV access