Murmur Recap Flashcards
Aortic Stenosis
- Type of murmur
- location
- shape (radiating, crescendo, rumble etc)
- pitch
- associated findings (cardiac issues, other heart sounds, pulse changes)
- causes
- systolic murmur
- right upper sternal border, radiating to carotids and apex
- systolic ejection murmur– when ventricles contract, it has to push the blood through the aorta whole time.
- mid, harsh
- parvus et tardus: delayed carotid upstroke (hard to push all the blood out to body, it’ll be slower), apical carotid delay, sustained apex, soft S2, S4 (stiff ventricle– can be due to hypertrophy)
6 causes: degenerative, bicuspid valve instead of tricuspid, rheumatic fever.
heart sounds associated with aortic stenossi
systolic murmur at RUSB.
- soft S2: the aorta is stenosed, so it closes softely cause it’s not as forcefull
S4
Hypertrophic Obstructive Cardio Myopathy hOCM
- Type of murmur
- location
- shape (radiating, crescendo, rumble etc)
- pitch
- associated findings (cardiac issues, other heart sounds, pulse changes)
- causes
- systolic murmur
- LSB and apex– ventricle hypertrophy.
- systolic ejection murmur, INCREASES WITH VALSALVA and squat to stand.
- Mid-harsh
- spike and dome pulse
- palpable S4 (triple ripple)– ventricular filling – stiff ventricle because of HOCM.
- MITRAL REGURG MURMUR - abnormal beta myosin heavy chain
HOCM additional heart sounds
- palpable triple ripple S4
- MR mumur. This is because the mitral valve gets stuck to the hypertrophied ventricle, and when the ventricle contracts, the mitral chamber is held open and blood rushes into atrium, causing a mitral regurgitation murmur.
a squat to stand action will ___ the murmur in HOCM, ___ the murmur in aortic stenosis, and ___ the mitral valve prolapse murmur
a squat to stand action will INCREASE the murmur in HOCM, DECREASE the murmur in aortic stenosis, and INCREASE the mitral valve prolapse murmur
wyy does squat to stand increase a hocm murmur?
- increases murmur in hocm by decreasing venous retrun, decrease preload, preventing the hypertrohpied ventricle from stretching out, thus causing more of an obstruction
why would stand to squad decrease a HOCM murmur?
increase LV volume because increases venous return. thus displaces the hypertrophied interventricular septum, causing less outflow obstruction
how does a stand to squat action afefct mitral valve prolapse?
it decreases mitral valve prolapse murmur, just like it decreases HOCM. HOCM can cause MR which is kind of like MVP so it ultimately is affected by the same things
Pulmonic Stenosis:
- Type of murmur
- location
- shape (radiating, crescendo, rumble etc)
- pitch
- associated findings (cardiac issues, other heart sounds, pulse changes)
- causes
- systolic murmur
- Left upper sternal boarder
- Systolic ejection murmur
- mid-high
- RV heave, right sided S4 because the right ventricle is working extra hard to get deoxy blood through the narrow valve. Also may see signs of systemic strain like backflow
- Shunt issue (especially in peds, like Tetrology of Folet), congenital
Mitral regurgitation:
- Type of murmur
- location
- shape (radiating, crescendo, rumble etc)
- pitch
- associated findings (cardiac issues, other heart sounds, pulse changes)
- causes
- systolic
- Left border, apex radiating to axilla (going from ventricle to atria to possible pulmonary veins)
- pansystolic murmur
- mid
- low volume pulse (because blood is flowing backward from V–> A instead of to aorta), dilated LV/LA, S3 sound– indicating rapid ventricular filling in diastole– blood doesn’t go through aorta, it goes back to atria which falls back into the ventricle–overall there’s more preload and more end diastolic volume.
- causes: degenerative, dilated left ventricle, endocarditis, papillary/chordal, HOCM
heart changes and heart sound in mitral regurgitation
there is overall an extra volume going to the ventricle and atria because less blood is leaving the heart through the aortic pathway. therefore there may be a dialtion in the LV and LA.
S3 sound also heard– indicates rapid overfilling of blood into ventricle
Mitral valve prolapse
- Type of murmur
- location
- shape (radiating, crescendo, rumble etc)
- pitch
- associated findings (cardiac issues, other heart sounds, pulse changes)
- causes
- systolic murmur
- left border and apex– might radiate to axilla
- late systolic crescendo, dynamic!!! increases with valsalva, squat to stand.
- mid
- HOCM, dilation of LV or LA, less blood going through aorta so therefore weaker low volume pulse, more blood going to ventricle from atria because it pushed remenants of last cycle into atria, therefore rapid filling S3, SYSTOLIC CLICK
- congenital
what specific heart sounds might you hear in a mitral valve prolapse setting in additin to a systolic late cresecndo murmur
, dilation of LV or LA, less blood going through aorta so therefore weaker low volume pulse, more blood going to ventricle from atria because it pushed remenants of last cycle into atria, therefore rapid filling S3, SYSTOLIC CLICK
Tricuspid Regurgitation:
- Type of murmur
- location
- shape (radiating, crescendo, rumble etc)
- pitch
- associated findings (cardiac issues, other heart sounds, pulse changes)
- causes
- systolic
- left lower sternal border
- pansystolic murmur
- mid
- RV heave, palpable PULMONARY ARTERY, right sied S3, S4.
- dilated RV, endocarditis, pulmonary hypertension