TRANSESOPHAGEAL
ECHOCARDIOGRAPHY
PROBE PLACEMENT
▸ should only be performed by adequately trained individuals
to minimise risks & cx
▸ should performed in fasting pt, who is either anaesthetised
or sedated
▸ examine probe for any existing damage prior insertion
▸ wheels of probe should be unlocked & in neutral position to
avoid trauma
▸ in anaesthetised pt, lubricated TEE probe is inserted gently
by performing jaw lift
4 PROBE MANIPULATIONS
1. Advance, withdraw: pushing or pulling the tip of the TEE
probe
2. Turn to right, turn to left (clockwise & anticlockwise):
rotating the anterior aspect of theTEE probe to the right
or left of the pt
3. Anteflex, retroflex: anteflex is the flexing the tip of the
TEE probe anteriorly by turning the large control wheel
clockwise. retroflex is flexing the tip of the TEE probe
posteriorly by turning the large wheel anticlockwise
4. Flex to right, flex to left: flexing the tip of the TEE probe
with the small control wheel to the pt’s right or left.
4 TEE TIP POSITIONS IN THE OESOPHAGUS AND
STOMACH TO OBTAIN 20 STANDARD VIEW
1. Upper oesophageal (20-25 cm from incisors): 2
views
2. Mid oesophageal (30-40 cm from incisors): 12 views
3. Transgastric (40-45 cm from incisors): 5 views
4. Deep transgastric (45-50 cm from incisors): 1 view
UPPER OESOPHAGEAL VIEWS (20-25
CM FROM INCISORS)
MIDOESOPHAGEAL VIEWS (30-40 CM
FROM INCISORS)
TRANSGASTRIC VIEWS (40-45 CM
FROM INCISORS)
DEEP TRANSGASTRIC VIEW (45-50 CM
FROM INCISORS)
RISKS AND COMPLICATIONS
▸ Misinterpreting the results leading to potentially harmful
interventions
▸ Odynophagia (0.1%)
▸ Dental trauma (0.1%)
▸ Upper gastrointestinal haemorrhage (<0.1%)
▸ oesophageal perforation (<0.1%)
▸ Aspiration
▸ dislodgement of ETT
LIMITATIONS
▸ Views are inadequate for diagnosis
▸ difficult imaging in pt with hiatus hernia or stomach
full of air
REFERENCES
▸ Practice guidelines for perioperative transesophageal
echocardiography. an updated report by the American
society of anaesthesiologists and the society of
cardiovascular anaesthesiologists task force on
transoesophageal echocardiography. Anaesthesiology.
May 2010;112(5):1084-96
▸ Comprehensive transesophageal echocardiography
examination. World Journal of Dentistry
▸ http://pie.med.utoronto.ca/TEE/TEE_content/assets/applic
ations/standardViews/index.htm