TEE

Question 1

When are TEE imaged obtained?

Answer 1

Pre operative and post operative

Question 2

TEE is a combination of what 2 procedures?

Answer 2

Ultrasound and endoscopy

Question 3

What are the 3 common TEE probes

Answer 3

-Biplane probe
Omni plane probe
3-D probe

Question 4

What 2 modes does the TEE use to evaluate the heart?

Answer 4

M-mode and Doppler echocardiography

Question 5

What is the average diameter of an esophagus?

Answer 5

2cm extending 25 cm from pharynx to stomach

Question 6

How does the TEE enter the heart?

Answer 6

Descends inferiorly into the thorax, then the esophagus and passing behind the trachea and into the left main stem bronchus and heart

Question 7

TEE allows _____(low or high?) resolution imaging of _____ cardiac structures and vessels closest to the esophagus

Answer 7

High
Posterior

Question 8

How long is the TEE probe?

Answer 8

100cm

Question 9

What is the TEE probe made of?

Answer 9

Flexible tube with piezoelectric crystals

Question 10

Where are the piezoelectric crystals located in the TEE probe?
Frequency ?

Answer 10

Tip of the probe
3-7 Hz

Question 11

Small depth imaging of TEE what kind of frequency is most often used to obtain spatial resolution?

Answer 11

Highest frequency

Question 12

What ways can the probe be bent?

Answer 12

Antegrade (flexion) and retrograde (extension)

Question 13

At what degree of the crystal or imaging plane is horizontal with the patients right side appearing on the left of the display ?

Answer 13

Zero

Question 14

What is a TEE probe used to find?

Answer 14

Embolus
Valvular endocarditis
LAS thrombi
Prosthetic valve dysfunction
Valvular disease
Etc.

Question 15

What are the advantages of using TEE ?

Answer 15

-Improved imaging resolution
-Relatively easy to perform without significant complications
- portability

Question 16

What are the limitations for TEE?

Answer 16

-Dependent on adequate swallowing
-non standardized views
- sometimes hard to achieve anatomical area of interest to be parallel to flow

Question 17

Are complications of TEE rare?

Answer 17

Yes

Question 18

Should the TEE probe be inspected prior to every use?

Answer 18

Yes

Question 19

Before the TEE is inserted, what steps do you have to take before?

Answer 19

-Examine the mouth
-Get informed consent from patient
-Use suitable anesthesia
- bite guard inserted

Question 20

What are the 2 categories for anesthesia?

Answer 20

• topical= lidocaine
• sedation = diazepam

Question 21

Does a TEE prune get lubricated?

Answer 21

Yes

Question 22

How is the probe inserted?

Answer 22

Displacing the mandible anteriorly and advancing the probe gently in the midline with manipulation of the neck

Question 23

When should a TEEA Probe be cleaned?

Answer 23

After each use

Question 24

In what solution do you soak the TEE probe and for how long?

Answer 24

Cidex OPA for 12 mins

Question 25

What does a curie point do?

Answer 25

It had a temp of 300-400 degrees Celsius will cause the piezoelectric crystals to terminators lose effectiveness

Question 26

Is LAA commonly seen with TEE?

Answer 26

No due to the posterior location of the LAA

Question 27

What is used to help TEE see LAA?

Answer 27

Contrast

Question 28

What are the 2 important scanning planes?

Answer 28

Mid esophageal window and transgastric window

Question 29

What do you see in a transgastric long axis view ?

Answer 29

Flipped PLAX view

Question 30

What do you see in a midesophogeal aortic valve short axis view?

Answer 30

A flipped PSAX view

Question 31

What do you see in a mid esophageal 4 chamber view?

Answer 31

Atriums at the top of the screen ventricles towards the bottom