Echocardiographic measurement of fluid responsiveness
Intensive Care Med (2006) 32:1547�1552
“By its ability accurately to evaluate hemodynamic status qualitative TEE could be useful for intensivists in managing circulatory failure in septic shock, rendering the more time-consuming quantitative evaluation useless.”
Role of Transesophageal Echocardiography in Hemodynamically Unstable Patients
http://www.ncbi.nlm.nih.gov/pubmed/7564542
Authors conclude that transesophageal echocardiography can be safely performed in hemodynamically unstable patients, it produces a high diagnostic yield, and it provides important information for prompt therapeutic decision making. Therefore, we recommend transesophageal echocardiography as one of the initial diagnostic procedures in critically ill patients suspected of having an underlying cardiovascular disorder.

