Interpretation of LE Segment Pressures

Question 1

How is the ABI calculated

Answer 1

highest rt ankle pa / highest brachial pa

highest lft ankle pa/ highest brachial pa

Question 2

API stands for

Answer 2

ankle arm pressure same as ABI

Question 3

what is normal ABI

Answer 3

> 1.0

Question 4

what is value within normal limits for ABI

Answer 4

> .9 - 1.0

Question 5

what ABI value indicates mild arterial disease

Answer 5

.8 - .9

Question 6

what is ABI value for moderate disease (claudication)

Answer 6

.5 - .8

Question 7

what value indicates severe arterial disease ( rest pain)

Answer 7

< .5

Question 8

ABI of incompressable vessels / unreliable values , which have ____elevated systolic pressures

Answer 8

> 1.3 - 1.5

falsely elevated systolic pressures

Question 9

what is most reliable measurement when vessels are calcified

Answer 9

toe pressures

Question 10

what has a stronger weight for predicting symptoms of rest pain than ABI of < .5

Answer 10

absolute ankle pressure < 50 mmHg (single level disease)

Question 11

ABI of ____ represents single level disease

____ suggests multiple lesions

Answer 11

less than or = to .5 (single segment)

less than .5 (multiple lesions )

Question 12

segmental pressure drop of ____ or _____ between two consecutive levels suggests significant obstruction

Answer 12

greater than 30 mmHg
greater than 20 mmHg “consecutive levels “ -
ipsilateral

Question 13

horizontal difference of ____ or ____ suggests obstructive disease at or above the level in the leg with the lower pressure

Answer 13

greater than or = to 20 mmHg or 30 mmHg \

“Horizontal “

Question 14

in the 4 cuff method what things should you remember about the seg pa values
2

Answer 14

the high thigh > 30 mmHg than highest brachial

the AK and BK pa are at least the same as the highest brachial pa

Question 15

in the 3 cuff tec what 2 things should be remembered about the segmental pressure values

Answer 15

thigh pressure is similar to the highest brachial pressure

does not allow for differentiation of HT to AK pressures

Question 16

what is true about toe pressures

2

Answer 16

less than or = to 30 mmHg are foot ulcers that did not heal

toe pressures may be more reliable in the diabetic pressure

Question 17

what is compared in exercise segmental pressures

Answer 17

resting values to post exercise values

Question 18

what does exercise testing used to r/o

Answer 18

true claudication vs false claudication

Question 19

what are contraindications to exercise testing

Answer 19

SOB
severe HTN
cardiac problems
stroke 
walking problems

Question 20

what is procedure for the test

Answer 20

pt WALKS <12% elevation

1.5 MPH for 5 min or until pain severity causes pt to stop

Question 21

what is documented throught the test

Answer 21

MPH
onset 
location and progression of sx
duration of exercise
recover time 
pressure changes pre and post exercise

Question 22

Post exercise doppler pressures are obtained how

Answer 22

1. abnormal ankle
2. other ankle
3. brachial pressures

with drop after exercise (abnorm results) pressures are obtained every two minutes until pre exercise pressures are attained

Question 23

interpretation of exercise ABI

Answer 23

normal : ABI increases

abnorm : ABI decreases

Question 24

exercise testing :

what is recovery time for single level disease

Answer 24

2-6 minutes ABI to increase back to resting levels afgter it has dropped to low or unrecordable levels after exercising

Question 25

Patient will always have a _____ _____ in ankle when claudication pain is vascular in origin

Answer 25

pressure drop and decrease in ABI

Question 26

exercise testing :

multi level disease is indicated by recovery time of

Answer 26

6-12 minutes for the ABI’s to increase back to resting levels after they remained low or at unrecordable levels after exercising

Question 27

what is reactive hyperemia

Answer 27

alternate method for stressing the peripheral circulation

manually creating ischemia

Question 28

interpretation for reactive hyperemia

Answer 28

single level : <50 % drop in ankle pressure with reactive hyperemia.

multi level disease > ankle pressure drop seen