TEE Transducers
HD11 XE Getting Started
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ARNINGS
• To avoid the risk of esophageal burn for adult patients, minimize the time
spent imaging at distal tip temperatures in excess of 42°C (107.6°F). Exposure
should be limited to 10 minutes or less at 42°C (107.6°F) or higher.
• Sufficient data on thermal tolerance of the esophagus in neonate and pediatric
patients does not exist, but it is likely these patients are more vulnerable than
adults. Minimize the time spent imaging at distal tip temperatures in excess of
41°F (105.8°F).
Entering the Patient Temperature
Always check the patient’s temperature before inserting a TEE transducer. If it is
above normal, whether from fever or therapeutic heating from a cardiac bypass
heart-lung machine, perform the following steps before inserting the transducer.
Also, follow these steps if a patient’s temperature rises during an exam.
WARNING
To protect the patient and to ensure the effectiveness of the Auto-Cool safety
feature, be sure to enter the correct patient temperature.
Measure the patient’s core temperature, or more specifically, the actual tempera-
ture in the esophagus.
• For patients undergoing surgery:
– Determine the temperature in the esophagus by direct measurement or
by monitoring the temperature of blood returning from the bypass pump
heat exchanger.
•For closed chest situations:
– Rectal temperature is the best estimate of core temperature.
– You can also use oral temperatures, even though they can be 1° lower
than the core temperature.
– If you measure an auxiliary temperature, which can be 2° lower than the
core temperature, add 1° or 2°.
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