Hints Flashcards
Which valve seperates the areas of greatest pressure difference?
Mitral
Which valve separates the areas of lowest pressure differences?
Tricuspid valve
What vessel lies in the anterior interventricular groove or sulcus?
LAD
Which aortic leaflet is the superior one in the parasternal long axis view?
the right leaflet
which aortic leaflet is the posterior one in the parasternal long axis view?
the noncoronary
from the left parasternal window which of the following are you most likely to get accurate velocity measurements?
a) LVOT
b) Mitral stenosis
c) Pulmonary artery
d) mitral regurgitation
C) Pulmonary artery
The coronary arteries come off the:
Sinuses of valsalva
During which phase do the coronaries fill?
Early diastole
the best images of the ascending aorta are often obtained from which transducer window?
Suprasternal
Name the vessels coming off the arch and most proximal to distal
Innominate(proximal)
Left common carotid
left subclavian artery (Distal)
What cardiac pathology is associated with bicuspid aortic valves?
Coarctation of the aorta
which window do you use to look for the secondary finding in bicuspid valves?
Suprasternal arch
where do most aortic coarctations occur?
the aortic isthmus ( after takeoff of the left subclavian artery)
from the apical 4ch view where are the pulmonary veins located?
rt and lt lower(inferior) pulmonary veins
from the apical 4ch view how do you rotate the transducer to obtain the apical LAX?
Counterclockwise 120 degrees
Where is the coronary sinus located?
Posterior AV groove
TO visualize the coronary sinus in the apical 4ch view you should tilt the transducer”
Posterior
where is the chiari network located?
in the right atrium
what portion of the pulmonary venous PW Doppler represents atrial systole? /
a wave
at what temperature is it unsafe to use a TEE probe?
40-45 degrees celcius
which has the fastest intrinsic rates?
SA node
What is the absolute refractory state?
that period when a muscle cell is not excitable- from phase 1 until phase 3;
what is the relative refractory period?
is during phase 3 and the muscle cell might contract if the stimulus is strong
What is the Frank - Starling law
(length- tension relationship) Incrased volume (preload) = increased contractability
Increased myocardial fiber length= Increased tension (rubber band theory)
Acute AI is __________ because we shift up the starling curve
Hypercontractile
Chronic Ai is ____________ when we drop off the end
Failure
echo findings for preload
Dilatation
echo findings for afterload
Hypertropy
which study does not allow for the calculation of ejection fraction?
a) 2D echo
b) cardiac angio
c) chest Xray
d) cardiac nuclear study
Chest xray
how do you eliminate aliasing on PW spectral Doppler?
switch to continuous wave doppler
What does VTI x CSA equal?
Doppler stroke volume
Inhalation of amyl nitrite causes?
decreased afterload
Mitral valve velocity during inspiration
Decreases
Isovolumetric timing with the ECG after the R wave=
Isovolumetric contraction
Isovolumetric timing with the ECG after the T wave=
Isovolumetric relaxation
what is the duration of the IVRT and IVCT
isovolumetric relaxation and contraction time
70 msec
on the wiggers diagram when is the mitral valve open?
4-1
the duration of isovolumetric relaxation time will increase with
bradycardia
during the cardiac cycle this event never happens
a) Ao valve is open &mitral valve is open
b) Ao valve is open &mitral valve is closed
c) Ao valve is closed &mitral valve is open
d) Ao valve is closed &mitral valve is closed
a) Ao valve is open and mitral valve is open
Which is the correct order for the cardiac cycle
Mechanical diastole, electrical diastole, electrical systole, mechanical systole
what is the normal pressure in the pulmonary artery?
25/10
Normal atrial pressures are about ___ mmHG in the right atrium and ____ mmHG in the left atrium
6, in the right
10 in the left
The right sided pressures are approximately _________ of the left sided pressures
1/5th
where is the O2 saturation the lowest?
coronary sinus
the O2 saturation in the pulmonary veins is ________ and ___________ in the arteries
95% and 75%
Best cath technique for LV function
LV angiogram
What is PCW (pulmonary capillary wedge) measuring?
Left atrial pressure
To determine AS where are catheters placed?
one in the LV and one in the Ao or
one in the LV and “pulled back across the AoV
or
one catheter with two separate sensors
TIssue harmonic imaging results in ?
thicker valve leaflets
Apical swelling of echo contrast-for LVO is caused by
high MI
a secondary finding in aoric stenosis is
LEft ventricular hypertrophy
In aortic stenosis is pulse pressure wide or narrow?
Narrow ( pulse pressure is the difference between systolic and diastolic pressures w
it is wide in AI and narrow in AS)
The best view to diagnose a bicuspid aortic valve is in the parasternal?
Short axis systole
what is a common symptom of aortic coarctation?
hypertension
What is Takayasu? arteritis?
(aortic arch syndrome
Narrowing anywhere along the aorta
occurs more in young women from asia
-there is fibrosis of the arch and descendingAo of unknown etiology.
in advanced states multiple coartations may occur (look for supravalvular AS)
Patients BP = 110/84, aortic velocity is 5m/sec. peak LV pressure in this patient is?
210mmHG
add the Ao gradient (100mmHG is the velocity is 5m/sec) to the systolic BP
the normal aortic valve area is
3-4cm squared
what is the continuity equation
Area2= area1 xV1
—————-
V2
*given V1, V2, and A1 calculate A2
when does VTI work better than peak velocities
in patients with poor LV function and when moderate to severe AI is present
using the continuity equation when would the severity of AS be underestimated
When the LVOT measured too large
what is DImensionless Index (DI)
a ratio of the LVOT and AS velocities or VTI
- used when the LVOT cannot be accurately measured, or in the setting of LV dysfunction
Which pressure is obtained during Doppler?
peak or peak instantaneous (for AS it’s the highest gradient anytime during systole)
echo gradients are usually _______ than cath gradients
higher
peak instantaneous vs. peak to peak
what is Noonan syndrome and what is it most commonly associated with
classified as a cardiofacial syndrome with PS, HCM and ASD(30%)
Noonan syndrome = Pulmonic stenosis
does Pulmonic stenosis cause pulmonary hypertension?
NO
If unable to obtain PS gradient from the parasternal window where else can you go?
Subcostal short axis
What does a Mitral stenosis(MS) murmur equal
MS murmur= low frequency “diastolic rumble” with opening snap
which cardiac valve is the second most common to be affected by rheumatic fever disease?
aortic
patients with mitral stenosis often develop?
atrial fibrillation
with atrial fibrillation mitral stenosis velocity calculations are best performed?
averaged over 5-10 beats
in the PSAX view which method is used to assess the MV area?
Planimetry
what is the formula to convert deceleration time to pressure half-time
Mitral halftime= deceleration time x 0.29
what is the formula to convert deceleration time to mitral valve area
Mitral valve area= 759/ deceleration time
for tricuspid stenosis what is the difference in carcinoid vs. rheumatic?
carcinoid= fixed body of the leaflets
rheumatic =tethered leaflet tips
which anomaly goes with aortic dissection?
Marfan syndrome
what kind of murmur would you hear in a patient with rupture of a sinus of valsalva aneurysm?
continuous
what is diastolic “blow”
the classic aortic regurgitation murmur
what causes MV preclosure
an elevated LVEDP
what is the formula to find LVEDP
LVEDP= diastolic BP -end diastolic gradient
antegrade
normal flow direction
retrograde
flow in opposite direction
*descending aorta diastolic flow reversal
Mild aortic regurgitation has an ________ spectral trace
incomplete
how would you calculate pulmonary artery end diastolic pressure
Pulmonic insufficiency velocity
what is the formula for Pulmonary artery end diastolic pressure (PAEDP)
PAEDP= RAP + EDP (converted from the EDV)
systolic flow reversal of bubbles in the IVC – TR or tamponade
TR= post systolic
Tamponade= pre systolic
what is the most common valvular problem associated with carcinoid syndrome
Tricuspid regurgitation
CVP (central venous pressure) refers to the
IVC pressure close to the RA
Hepatic venous flow reversal indicates_______ TR
Severe TR
Given a TR velocity of 4.0m/sec what is the RVSP?
72mmHG
what is the formula for RSVP
RSVP= TRgradient + RAP
RSVP=4(v)squared + RAP
in the absence of pulmonic stenosis the RVSP should equal
the pulmonary artery pressure
the vena contracta might be seen in which type of cardiomyopathy?
Dilated
what of the 4 parts of an MR jet
- zone of convergence
- Vena contracta (greater than or equal to 0.7 cm= severe MR)
3, Jet size (turbulence) - Downstream effect (pulm venous flow reversal)
when does the Coanda Effent happen
with wall hugging jets.
May underestimate jet sized
if you suspect Severe MR where else should you look?
Pulmonary vein
Pulmonary venous systolic flow reversal =?
severe MR
the greatest source of error in measuring PISA is with
radius of the flow convergence
Which of the following is used in echo to measure dP?dt?
Mitral regurgitation
dP/dT measurement of mitral regurgitation assesses what?
LV systolic function
what is the formula for left atrial pressure(LAP)
LAP= systolic BP- MR gradient
what does the pressure waveform for MR look like
late systolic jump in LA pressure
what is Marfan disease
Congenital connective tissue disease causing aortic dilatation and mitral valve prolapse(MVP)
in Marfan syndrome why does aortic dissection and MVP occur?
decreased fibrillin
what is Ehlers-Danlos
connective tissue disease
look for MVP, dilate AO and dissection
Severe aortic aneurysms are greater than
5.0cm
when do you not diagnose a MVP
from the apical 4 chamber view
in the presence of a large pericardial effusion
what are two types of endocarditis?
Libman-sachs (systemic lupus erythematous)
Marantic (non bacterial) now called NBTE
nonbacterial thrombotic endocarditis
seen in patients with metastatic disease
patients with a history of IV drug abuse may present with:
tricuspid endocarditis
can you tell old vs new vegetations
no
in order to be seen by 2D vegetations need to be at least?
3mm
mechanical valves are durable but need
blood thinners
what is the name of the most common Caged ball valve
Starr edwards
what is the name of the most common Caged disc valve
Beall
what is the name of the most common Tilting disc valve
Bjork -shiley
what is the name of the most common bileaflet( bidisc, bi popper)
ST Jude (bi leaflet valve)
autografts use the
patients own tissue
what is the name of the dual valve surgery for congenital AS
Ross procedure
a mitral valve prosthesis has what kind of artifact
acoustic shadowing
the normal pressure half time for mitral prosthetic valve is
<170msec
which cardiomyopathy is autosomal dominant?
Hypertrophic
what is the ratio for assessing asymmetric hypertrophy
1.3:1
LVOT obstruction causes the aortic valve to
close mid systole
what does it mean if the mitral inflow shows A wave greater than E wave
abnormal relaxation
does Inderal (beta blocker) increase SAM?
no , it decreases heart rate, reduces SAM with exercise
61 year old male with IHSS and a resting gradient of 144mm Hg admitted to the hospital with chest pain. the next day the resting gradient was 15 mmHg. What happened?
left ventricular infarct
Global longitudinal strain in patients with HOCM is typically?
-10%
what does strain measure
the deformation within the myocardium
Chagas disease can cause
Cardiomyopathy
posterior and apical thinning
septum usually normal
what are the echo signs of congestive carioimyopathies
Multichamber enlargement Globally impaired LV contractility B notch on mitral valve Mmode reduced aortic root excursion thrombus may be present Small pericardial effusion Increased Epoint to septal separation(>7mm) Reduced mitral valve excursion (double diamond on Mmode)
what is the cause of a B- notch
increased LVEDP
what is the 2D post transplant appearance
double atria
- might have 2 Pwaves on ECG
Amyloid and sarcoid are what type of cardiac abnormalities?
Infiltrative
what is hemochromatosis
an iron disorder in which the body simply loads too much iron
Amyloidosis involves _______ ______ . some may describe is as
abnormal proteins
some may describe is as a translucent waxy protein build up on the myofibrils
what is the term ground glass appearance related to
infiltrative endocarditis
a restrictive cardiomyopathy has which of the following?
a. increased afterload
b. decreased LV compliance
c. increased preload
d. decreased LA pressure
b. decreased LV compliance
what are the types of cardiomyopathies
Normal
Congestive (dilated)
Hypertrophic
Restrictive
a typical ejection fraction in a dilated cardiomyopathy patient might be? or for HCM patient
15-25%
The majority of ventricular filling occurs during?
the first third of diastole
what are the names of the filling patterns
normal
abnormal relaxation
normalization (pseudonormalization)
restrictive
If a patient has a normal MV inflow but the pulmonic veins showed a decreased S wave and D wave consider that they might have
a pseudonormal pattern