CARDIAC Section 1: Chambers Flashcards
LEFT VS RIGHT ATRIUM
Anterior
RIght Atrium
LEFT VS RIGHT ATRIUM
Defined by the IVC
Right Atrium
LEFT VS RIGHT ATRIUM
Crista Terminalis
Right Atrium
What muscle runs from the peak of the crista terminalis and run straight into the atrial appendage?
Pectinate Muscles
Where are the pectinate muscles found in the left atrium?
Inner surface of the left atrial appendage
Which atrial appendage has a triangular appearance with WIDE opening
RIght Atrial appendage
Which atrial appednage has a NARROW opening?
Left atrial appendage
Identify
Crista Terminalis
- Not a clot
It is a muscular ridge that runs from the entrance of the SVC to that of the inferior vena cava.
Crista Terminalis
What is the main draining vein of the myocardium?
Coronary sinus
Where does the coronary atrium run and enter?
It runs in the AV groove on the posterior surface of the heart
and ENTERS the right atrium near the tricuspid valve.
A normal anatomic structure that looks like a little flap in the IVC as it hooks up to the atrium.
Eustachain Valve
- Identify
- What do you call when the tissue of this valve has a more trabeculated appearance?
- Eustachian Valve
- What do you call when the tissue of this valve has a more trabeculated appearance?
Chiari Network
What ventricle is defined by the moderator band?
Right ventricle
Identify
Moderator band
Identify
Moderator band
What does the moderator band do?
Acts as part of the right budle branch
What ventricle has a muscular outflow tract?
Right ventricle
What ventricle has a fibrous outflow track? - Continuous with the mitral valve
Left ventricle
Which ventricle has an extensive trabechulae
Right ventricle
The 2 chamber view is good for these few thing:
- Wall motion/Global LV function
- Mitral Valve issues
This view resembles a “basilisk fang” and is obtained from a bisection of the LV, parallel to the IV septum
2 Chamber long axis single oblique
This view allows assesment of both mitral and tricuspid valves
The Horizonal Long Axis (4 Chamber View)
The 4 chamber view is not great for looking at many congenital heart problems, except:
AV canal defect
What view is this?
What is the defect?
4 chamber view
Atrioventricular septal defect w
ith ostium primum atrial septal defect (arrowhead) and inlet ventricular septal defect (arrow).
This is a “down the barrel of polyjuice potion” series of views taken perpendicular to the long axis of the heart.
LV Short Axis view
The short axis view is obtained perpendicular to what axis?
4 chamber horizontal long axis
What view is this?
Identify the structures
Other name for the 3 chamber view
Apical LONG axis view
This view is obtained by using a short axis view around the mid-base region near the aortic outflow tract
Apical long axis view (3 chamber)
What view is this?
3 chamber view
The advantage of the 3 chamber view
Visualization of the left ventricular outflow tract (LVOT)
Best view to show aortic regurgitation or stenosis?
3 chamber view
Descibe the right Atrial enlargement on CXR
Shifting of the right heart border
Described the right Ventricle enlargement
Cardiac apex is tilted up and out
Describe the left ventricle enlargement
Cardiac apex is tilted DOWN and OUT
Indirect signs of left atrial enlargement
Widenening of the carinal angle (>90)
Elevation of the left main Bronchus
Walking man sign
A classic sign describing the posterio displacemnt of the left mainstem bronchus
Walking man sign
Identify the lesion
Echogenic focus in the left ventricle
What is the Echogenic focus in the Left ventricle?
They are associated with what increase of incidence?
Calcified papillary muscle
Downs Syndrome
DIagnosis?
Lipomatous hypertrophy of the Interarterial Septum
dumbbell (bilobed) appearance of fat density in the atrial septum
Lipomatous hypertrophy of the Interarterial Septum
What structure is spared in the Lipomatous hypertrophy of the Interarterial Septum
Fossa ovalis
Lipomatous hypertrophy of the Interarterial Septum can cause what type of Arythmia?
Supraventricular arrythmia
How thick should the atriaul septum be in Lipomatous hypertrophy of the Interarterial Septum?
> 2cm
Describe the lipoma in the interatrial septum
Uncommon
encapsulated
DOES NOT spare the fossa ovalis
Rarely associated with arrythmia