Cardiovascular Part B Flashcards
What is MI?
myocardial infarction- heart attack
How is S3 best heard?
at the apex in L lateral with bell
What is S3
A third heart sound, a ventricular filling sound, which may be normal (physiologic) or abnormal (pathologic)
Physiologic S3 is common in…
children, young adults (40 and under) and usually disappears upon sitting up.
In adults, S3 is…
usually abnormal (pathologic) and called a ventricular gallop or S3 gallop. The sound persists when sitting up.
The third heart sound can be seen…
in heart failure or volume overload conditions such as mitral regurgitation.
The gallop will disappear when…
you correct the primary condition.
Describe the S4 sounds
- ventricular filling sound, very soft, low pitch sound
- heard just before the S1 with bell at apex in left lateral position
- may be physiologic or pathologic
When does S4 occur?
when atria contract late in diastole
When is S4 physiologic?
in adults 40-50, no heart disease, especially after exercise
What are four causes of pathologic S4?
- Decreased compliance of ventricles (CAD, cardiomyopathy)
- Systolic overload (afterload)
- Outflow obstruction of ventricle (aortic sensations)
- Systemic hypertension
What’s another name for S4?
atrial gallop or S4 gallop
Describe the Murmur Grading System: I-VI
Grade I- barely audible
Grade II- clearly audible
Grade III- moderately loud
Grade IV- loud with thrill
Grade V- very loud with thrill. can hear with one corner of stethoscope lifted.
Grade VI- heard with stethoscope of chest. thrill palpable and visible
What do systolic murmurs generally indicate?
May NOT indicate disease.
What are the 2 types of systolic and diastolic murmurs?
Aortic Stenosis (abnormal narrowing of the aortic valve) & Mitral Regurgitation (mitral valve does not close properly when the heart pumps out blood)