Bates-Murmurs Flashcards
Is S1 softer or louder at the base?
Softer!
Right and left 2nd interspaces
Is S1 softer or louder at the apex?
Often, but not always louder.
When is S1 accentuated?
Tachycardia, rhythms with a short PR interval, and high cardiac output states (exercise, anemia, and hyperthyroidism)
Mitral stenosis.
In these conditions, the mitral valve is still open wide at the onset of ventricular systole and then closes quickkly
When is S1 diminished?
First-degree heart block.
Also when the mitral valve is calcified and relatively immobile, as in mitral regurg AND when left ventricular contractility is markedly reduced, as in heart failure or coronary heart disease.
What are the two kinds of extra heart sounds in systole?
- Early ejection sounds
2. Clicks, commonly heard in mid-and late systole
What are systolic clicks usually caused by?
Mitral valve prolapse
Where do we listen for mitral valve prolapse?
With our DIAPHRAGM, we listen at or medial to the apex, but also at the lower left sternal border
Do we want our patients to squat or stand when listening for mitral prolapse?
STAND! Squatting delays the click and murmur, standing moves them closer to S1
When will you diagnose PHYSIOLOGIC S3?
Frequently in children and in young adults to the age of 35 or 40. It is also common during the last trimester of pregnancy
When does the physiologic S3 occur?
Diastole during rapid ventricular filling, is is later than the opening snap, dull and low in pitch, and heard best at the apex in the left lateral decubitus position.
When does an S4 sound occur?
Just before S1
Commonly called an atrial sound or atrial gallop
How do you describe an S4 murmur?
Dull, low in pitch, and heard better with the bell
When is an S4 occasionally normal?
In trained athletes and in older age groups
When it S4 most commonly due to?
Increased resistance to ventricular filling following atrial contraction
What may cause S4 (left-sided?
Hypertensive heart disease, myocardial ischemia, aortic stenosis, and cardiomyopathy
Where is S4 best heard?
Best at the apex in the left lateral position. May sound like Tennessee.
Where do we listen for mitral regurg?
Apex
Where does mitral regurg radiate?
To the left axilla, less often to the sternal border
How would you describe the intensity of mitral regurg?
Soft to loud; if loud, associated with an apical thrill
Pitch of mitral regurg?
Medium to high
Quality of mitral regurg?
Harsh, holosystolic
How does it sound different from tricuspid regurg?
Does not become louder in inspiration