Cardiac terms from nearpod Flashcards
three muscles layers of the heart
pericardium, epicardium, and endocardium
the four chambers of the heart
tricuspid, mitral, aortic, pulmonic
where can the apical be auscultated and palpable
left chest 5th intercostal space
what is known as the pacemaker of the heart; normal rate is 60-100bpm
sinoatrial node (SA)
which valves are open during diastole
tricuspid and mitral
atrioventricular vales are known as the
tricuspid and mitral valve
during ______ systole contraction of papillary muscles causes the chordea tendineae to become taut, keeping the valve leaflets approximate and enclosed
ventricular
S1 sound is the closure of what valves
tricuspid and mitral
turbulent blood flow caused by a narrowed or malfunctioning valve
murmur
S2 sounds is the closure of what valves
aortic and pulmonic
semilunar valves are known as the
aortic and pulmonic valves
3 major events in each cardiac cycle
diastole, atrial systole, ventricular systole
cardiac output =
SV x HR
average adult CO
4.7 L
normal range for CO
4-8 L
the volume of blood pumped from one ventricle of the heart with each beat
stroke volume
amount of mLs with each beat
70 mls
stroke volume is influenced by ______ that return from the ______ from venous circulation in the _______ from pulmonary veins
amount of blood; right atrium; left atrium
a higher stroke volume does what to the workload of the heat
increases
the goal of medication therapy for cardiac patients
decrease cardiac workload by manipulating the contractility, SV, volume, HR, preload and afterload
the filling pressure of the right ventricle
preload
higher venous return or fluid volume overload will result in what
increased SV
if the patient has a ___________they will have a lower SV
deficit fluid volume
normal central venous pressure
2-6 mmHg