Undifferentiated hypotension is a medical emergency where a patient's blood pressure drops to
critical levels due to several possible reasons. The medical staff treating the patient will
need to find out the reason for your drop in blood pressure as soon as possible. When
treating low blood pressure, the medical staff typically performs a procedure called central
venous cannulation (CVC). CVC involves accessing a large vein (usually the subclavian under
the collarbone) by inserting a needle into the vein. By doing this, the medical staff can
measure the pressures in the patient's veins or give medicine to the patient while they are
in the hospital.
The purpose of this study is to compare the time needed to complete CVC using the AxoTrack
device to CVC guided by landmarks on a patient's body. The investigators expect that there
will be a maximum of 30 patients enrolled in this study.