Transcutaneous Oximetry

Question 1

Tc PO2 produces what

Answer 1

transcutaneous oximetery

measurement of o2 tension in skin via electrode excitement

Question 2

capabilities

Answer 2

wound healing and amputation level determination

Question 3

limitations

Answer 3

inability to keep electrode fairly flat

needs intact skin surface

Question 4

Physical principles of transcutaneous oximetry

Answer 4

electrode heats skin 45 C
blood flow increases , lipid layer melts
more o2 escapes and is measured by sensor

Question 5

what happens as the o2 escapes from lipid layer of skin

Answer 5

chemical rx

the electrode converts chemical rx into a current reading

Question 6

the current reading is converted into a what

Answer 6

p02 reading in mmHg

Question 7

describe the steps to TcPO2 procedure

Answer 7

skin cleaned with alcohol wipe, air dried
adhesive fixation ring applied

electrolyte solution put inside ring, sensor is attached ontop

reference reading is obtained (upper lat. chest)

specific sites of intrest readings are obtained

Question 8

after manual calibration it takes ____ to ____min per site to obtain PO2

Answer 8

15-20

Question 9

interpretation of TcPO2 test :

Normal

Answer 9

PO2 reading >50 mmHg

Question 10

interpretation of TcPO2 test :

Borderline

Answer 10

PO2 reading <50 mmHg

Question 11

interpretation of TcPO2 test :

non-helaing

Answer 11

PO2 reading <30 mmHg