heart and neck Flashcards
(46 cards)
what is the role of the valves in the heart
stop the backflow of blood into the different cavities
what is S1
( Lub )first heart sound as a result of closure of the AV valves (mitral & tricuspid) .It is heard best in the apex of the heart.
what is S2
(Dub)second heart sound as a result of closure of semilunar valves(aortic & pulmonic).It is heard best in the base of the heart.
what valves are closed in dystole and systole ?
systole - tricuspid and mitral, dystole- pulmonic and aortic
what is S3
extra heart sound at the end that is common in pregnant women, and young adults and children
don’t need to know anything about S4
what is a murmur ?
Blood circulating through normal cardiac chambers and valves usually makes no noise, However, some conditions create turbulent blood flow
- A murmur is a gentle, blowing, swooshing sound that can be heard on chest wall
rheumatic fever
the reason why we treat strepp throat, will damage heart valves, leads to mitral valve prolapse/ regurgitation, stroke volume will be very inefficient, and can lead to pulmonary edema
sign of pulmonary edema
pink/ frothy sputum
what is tricuspid stenosis
stiff valve
what will a replacement valve sound like
there will be a clicking sound
true or false: all dyastolic murmurs are bad
True : all dyastolic murmurs are bad
SA node
sets the tempo to keep everyone organized in the heart
AV node
Relay station of the electrical impulse in the heart
left and right bundle branch
av node sends signals to the bundle branches
purkinje fibers
starts at the av node
it is considered a sinus rhythm
reasons of the SA node going out
often results from old age , which is why we need a pace maker,
uncontrolled hypertension can damage it if SA node goes out, the AV node has to take over will beat at a 40- 60 bpm , considered a junctional rhythm
what is A fib ?
when both the AV and the SA nodes go out
what is ventricualr escape
20- 40 bpm
if you dont habe any volume
you cant have a pulse
if you can see electrial activity, doesnt mean that the heart is ok
what is the P wave
Sa node fires Atrial depolarization; conduction of impulse throughout the atri ( going down throught eh heart, upward curve on chart . Sinus rhythm when you see upright P wave
will a junctional rhytm have a p wave
no there will be no p wave
QRS complex
message gets send to purkinje fibers, widened QRS complex, the transmission is not good( commonly seen in a heart attack ), if it is really wide, will be a ventricular rhythm( wide QRS and no P wave)