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Boards (&PP2019) > Ultrasound > Flashcards

Flashcards in Ultrasound Deck (12)
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1
Q

advantages

A

Visualization of anatomy
Better guidance for needle pathway to target (+ avoiding structures damaged by needle)
Real time U/S imaging permits continual visualization of LA delivery (ensure proper distribution)

2
Q

U/S image modes

A

A mode

B mode

3
Q

Mode - older technique, 1dimensional, N/A for regional anesthesia

A

A mode

4
Q

2 dimensional scanned by linear array of 100-300 piezoelectric elements
Cross section image
Primary mode used for regional anesthesia

A

B mode

5
Q

generation of electric charge in response to mechanical force applied

A

Piezoelectric

6
Q

common errors of U/S

A

Probe fatigue
Reversing probe orientation
Inadequate equipment preparation

7
Q

Optimization of image

A

PART

8
Q

PART

A

Pressure
Alignment
Rotation
Tilting

9
Q

What does Pressure do?

A

minimize distance to target

compress underlying SubQ adipose tissues

10
Q

What does Alignment allow for?

A

placing transducer in position over extremity at which underling nerve is expected to be in field of view

11
Q

What does Rotating do?

A

Fine tuning the view

12
Q

What does Tilting?

A

helps bring face of probe into a perpendicular arrangement with underlying target to maximize # of returning echoes → providing best image