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29 terms

PHYSICS SET #2

1515
STUDY
PLAY
PHOTO PLETHYSMOGRAPHY (PPG) TESTS FOR....?
VENOUS INSUFFICIENCY
DETECTS CHANGES IN BLOOD CONTENT OF SKIN
PPG
USES DIODE AND PHOTO SENSOR
PPG
INCREASED BLOOD FLOW CAUSES INCREASED/DECREASED REFLECTION (PPG TESTING)
DECREASED
A DECREASED REFLECTION ON A PPG IS DISPLAYED AS A POSITIVE/NEGATIVE WAVEFORM?
POSITIVE
WHICH COUPLING DETECTS SLOW CHANGES IN BLOOD FLOW ?
DC
WHICH COUPLING HAS FLOW IN BOTH DIRECTIONS?
AC
WHICH COUPLING REVERSES POS. TO NEG. 60 X PER SECOND?
AC
RECORDS ON HEAT SENSITIVE PAPTER
PPG
TEST THAT MEASURES VRT (VENOUS REFILL/REACTIVE TIME)
PPG
NORMAL VRT TIME IS > ? SECONDS
20 SECONDS
TEST THAT MEASURES VENOUS FUNCTION
AIR PLETHYMOGRAPHY (APG)
TESTS PATIENT SUPINE AND THEN STANDING
APG
DISPLAYS VOLUME CHANGES ON AN ANALOG DISPLAY
APG
DOCUMENTS VOLUME CHANGES FROM POSITION CHANGES OR EXCERCISE
APG
10 TIP TOE MANEUVER DONE
APG
VENOUS FILL.ING INDEX (VENOUS VOLUME/ VENOUS FILLING) SHOULD BE LOW/HIGH
LOW
MEASURES CALF MUSCLE PUMP
EJECTION FRACTION
EJECTION VOLUME AND FUNCTIONAL VENOUS VOLUME =
EJECTION FRACTION (EF)
EJECTION FRACTION SHOULD BE A LOW/HIGH PERCENT?
HIGH
RESIDUAL VOLUME FRACTION (RVF) IS EQUAL TO
AMBULATORY VENOUS PRESSURE
VENOUS VOLUME REMAINING AFTER 10 TIP TOES IS.....
RESIDUAL VOLUME FRACTION
RESIDUAL VOLUME FRACTION SHOULD BE A LOW/HIGH PERCENT?
LOW
DOPPLER USED TO EVALUATE DEEP VENOUS OBSTRUCTION
CW DOPPLER
TEST TO EVALUATE VENOUS INCOMPETENCE
CW DOPPLER
CW DOPPLER CAN'T DIFFERENTIATE DVT FROM?
EXTRINSIC COMPRESSION
CW DOPPLER TESTING FOR DVT PATIENT SHOULD BE IN REVERSED ? POSITION
TRENDELENBURG
CW DOPPLER TEST FOR DVT SHOULD USE ?MHZ PROBE?
5 MHZ
START WITH ASYMPTOMATIC/SYMPTOMATIC SIDE?
ASYMPTOMATIC