Flashcards in Week 7- Cardiac Deck (117)
What occupies most of the anterior cardiac surface?
The inferior border of the RV lies below the junction of the:
Sternum and the xiphoid process
This is behind the RV and to the left, it forms the lateral margin of the heart.
The LVs tapered inferior tip if often termed the:
Cardiac apex and this produces the apical impulse, identified during palpating of the precordium as the PMI
Where is PMI typically found:
5th inter coastal space at or just medial to the left midclavicular line.
A displaced PMI is seen in:
RVH such as in COPD, MI, or heart failure
Mitral and tricuspid valves are called:
The aortic and pulmonic valves are called:
Ventricular contraction- LV pressure 5-120
A period of ventricular relaxation - ventricular pressure falls further to below 5mmhg
During systole the aortic valve is ___ and the mitral valve is ___.
Closed to prevent backflow
During diastole the aortic valve is ___ and the mitral valve is ____ open.
S1 is produced by:
Closure of the mitral valve (normal)
S2 is produced by:
Closure of the aortic valve (normal)
S3 and s4 are produced by:
Atrial contraction and are generally pathologic in adults (heart failure, MI)
Right sided cardiac events usually occur slightly ___ than those on the left.
A split s2 is caused by:
Left sided closure of the aortic valve and right sided closure of the pulmonic valve
Where can you hear a split s2?
2nd-3rd intercostal space near sternum.
When will a split s2 happen?
During inspiration (right heart filling time is increased, which increases rv stroke volume and the duration of rv ejection compared with the LV)
Split S1 is the result of:
An earlier mitral and later tricuspid sound
M1 of a split S1 is heard best ___ while the T1 is best heard ____.
Splitting of S1 does or does not vary with respiration?
Distinct heart sounds distinguishable by their pitch and their longer duration and are attributed to turbulent blood flow.
Heart murmurs are usually:
Diagnostic or a valvular heart disease
This has an abnormally narrowed valvular orifice that obstructs blood flow:
When a valve allows blood to leak backward in a retrograde direction:
Murmurs in children may be innocent flow murmurs T/F?
Aortic valve can beat be heard:
Right 2nd intercostal space
Pulmonic valve can best be heard:
left 2nd-3rd interspaces close to the sternum