Cardiac Flashcards
Left isomerism is associated with
Polysplenia
Two lobes on each lungs
Right isomerism
Asplenia
Bilateral minor fissures
Three lobes in each lung
The right atrium receives SYSTEMIC venous return
Superior vena cava
Inferior vena cava
Coronary sinus
Two portions of the right atrium
SMOOTH posterior wall (sinus venosus) - where inflow from SVC, IVC and coronary sinus enters
TRABECULATED anterior wall (embryonic RA)
Is a triangular or pyramidal shaped with a broad base and contains thick, coarse, pectinate muscles extending toward the atriventricular valve
RA appendage
Smooth, thickened muscular ridge that runs from the mouth of the SVC and fades inferiorly to the mouth of the IVC
Crista Terminalis
A smooth, central dimpled area within the interatrial septum
Fossa ovalis
Opening of the coronary sinus is guarded by the
Thebesian valve
Most common form of PAPVR
Right upper pulmonary vein connects to the RA or the SVC
Is required for survival prior to repair of TAPVR
ASD
Most superior and posterior cardiac chamber
Left atrium
Long, slender and finger like and projects superiorly and to the left. With fewer and smaller pectinate muscles
Left atrial appendage
Aortic arch gives rise to
Right brachiocephalic artery
Left subclavian artery
Left common carotid artery
Is the remnant of the ductus arteriosus which closes functionally at ____ and closes anatomically at ______
Ligamentum arteriosum
1st 24 hours of life
10 days of life
Useful in assessment and quantification of blood flow
Pulsed or continuous wave Doppler
Allows assessment of myocardial contraction and deformation
Speckle tracking echocardiography
Supplies the inferior wall of the LV
Posterior Descending artery (PDA)
Supplies the anterior LV
Left anterior descending coronary artery (LAD)
Supplies the posterolater LV and LA(?)
Left circumflex (LCx)
Supploes the inferolateral LV
Obtuse Marginal (OM)
When Left main coronary artery trifurcates
LAD
LCx
Ramus Intermedius
Supplies the RV
Right coronary artery (RCA)
Supplies the inferior aspect of LV and LA
Posterior Left ventricular branch (PLV or PLB)
1st branch of RCA
Conus branch
This is when the conus branch acts as a collateral pathway for blood flow to the LAD
Arterial Circle of Vieussens
Most anterior chamber abuts the sternum
Right ventricle
Muscular band that extends from the base of the anterior papillary muscle to the interventricular septum
Moderator band
Supply
A) Truncus anterior
B) Interlobar attery
A) right upper lobe
B) right middle and lower
Most common form of PAPVR
Right upper pulmonary veun connects to the RA or the SVC
Reservoirs created by the closure of the aortic valve and from which the right and left coronary arteries arise
Sinuses valsalva
SA node is located on the ___
Endocardial surface of the RA just above the SVC
Impulse is collected and delayed approx ___ in the AV node
0.7 sec
AV node is locates on the
Interatrial septum
Bundle of His is locates on the
Interventricular septum
Ventricular filling
Diastole
Ventricular contraction
Systole
Period immediately after ventricular contraction when the aortic and pulmonic valve closes
Isovolumic relaxation
Time between closing of the AV valves and opening of the aortic and pulmonic valves
Isovolumic contraction
Positive Hoffman-Rigler sign
> 1.8 cm distance between the LV border and the posterior border of IVC
Normal volume in the pericardial sac
20-25ml
Most anterior cardiac chamber
Right Ventricle
Most muscular cardiac chamber
Left ventricle
