Test 5 PCW notes Flashcards
PCW normal pressures
25/30/15
what is the format for PCW waveform
a/v/m
what does a wave mean for PCW
atrial contraction
what does c wave mean in PCW
closure of MV
x descent in PCW?
relaxation of the left atrium
v wave in PCW?
Left ventricle contraction and atrial filling
y descents in PCW?
MV opening and LA emptying into LV
what is larger in PCW a waves or v waves
v waves
how much higher does v waves have to be to be considered MR
2-3 times higher than PCW
respiratory variation is normal for
PCW
what is higher values Ra or PCW
PCW
Because of retrograde backflow of blood from pulmonary veins the v wave in the waveform in relation to the EKG is slightly
delayed after the QRS
when is PCW sampled
end expiration
is the balloon up or down when sampling PCW
up
to stretch out a waves form you must __________the speed
increase
is the balloon inflated if saturations are 70-90
which pressures are you sampling
no, PA
is balloon inflated if o2 sat is at 95-100
which pressures are you sampling
yes, PCW
intravascular volume overload
LV failure
pericardial effusion w tamponade
atrial Myoxma,
how does it affect PCW
increase in PCWm
hypovolemia
improper zero of the transducer
these cause what to PCW
decrease in PCWm
Increase in RV, PA PCWm pressures would indicate
VSD
increase in RA RV PA and PCW indicated
ASD
MS
LV failure
a-v synchrony
causes what to PCW
increase PCWa
missing a waves indicate
AFib/aflutter
MR
LRV failure
VSD
causes what to PCW
increase PCWv (2-3 minutes)
PCWv=PCWa means
CP or tamponade
M’s and W’s (prominent x and y descents) indicate
CP/RC
PCWm is increased and higher than LVedp that would mean
MS
canon v waves (2-3 times larger than a) indicates
MR
severe papillary muscle acute ruptures due to infarct causes
canon v waves=MR
12/30/15 PCW
MR
diastolic gradient between PCWm and LVedp means
MS
diastolic gradient between PAd and PCWm indicates
COPD/PE
if patient is suspected of COPD ask the pt if they
smoke
what is usually mistaken for a waves in AFib/aflutter
c waves
RA has respiratory variation opposite of PCW which indicates
Kussmaul’s= tamponade
when in suspicion of tamponade call
echo
M’s and W’s in PCW indicates?
Which waveforms do you need?
what are you looking for?
What provokes Discord or concord?
CP/RC
RV and LV
Square root
1 Liter IV bolus
