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80 Cards in this Set
- Front
- Back
what is the period of ventricular contraction?
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systole
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what valve is open during systole?
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aortic
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normally, maximal left ______ pressure corresponds to systolic pressure .
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ventricular
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during systole, what valve is closed, preventing blood from regurgitating back into the atrium?
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mitral (bicuspid)
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what produces the first heart sound (S1)?
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closure of the mitral valve
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when does the mitral valve close?
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when the left ventricle starts to contract and ventricular pressure rapidly exceeds left atrial pressure
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what is the period of ventricular relaxation?
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diastole
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what valve is closed during diastole?
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aortic & pulmonic
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why is the aortic valve closed during diastole?
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to prevent regurgitation of blood from the aorta back into the L ventricle
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when does the aortic valve shut?
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when L ventricular pressure drops below aortic pressure
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what produces the second heart sound (S2)?
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the aortic valve closure
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what valve is open during diastole?
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mitral and tricuspid
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what term is used to describe an audible opening as a snap sound during when the mitral valve opens?
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mitral stenosis
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when might you hear a third heart sound (S3) after a mitral valve opens?
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it may arise in children and young adults from rapid decelleration of the column of blood agaist the ventricular wall
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although not often heard in adults, a fourth heart sound (S4) marks
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atrial contraction
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when is a fourth heart sound heard?
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immediately preceding S1 of the next beat
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what valves open during systole
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Aortic & pulmonic
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what valves open during diastole
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mitral & tricuspid
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what is an S3 sound due to if present?
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rapid ventricular filling
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what is an S4 sound due to?
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atrial contraction "top off"
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what ICS do you hear aortic valve sound @?
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2nd ICS on R
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what ICS do you hear pulmonic valve sound @?
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2nd ICS on L
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what ICS do you hear erb's point?
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3rd ICS on L
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what ICS do you hear tricuspid valve sounds?
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4th and 5th ICS on L
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what ICS do you hear mitral valve sound?
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5th ICS @ midclavicular
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how does one distinguish a heart murmer from a heart sound?
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by their longer duration
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what are heart murmurs attributed to?
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turbulent blood flow
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what can turbulence of blood flow be due to?
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1)valve is open and narrow- stenotic
2)valve should be shut and leaks- regurgitation |
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a defective mitral valve that leaks when it is shut will create a sound on S1
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true
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if a person has aortic or pulmonic stenosis and squeeze occurs, and it is supposed to be open, you will hear a funny sound on ____?
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S1
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if A/P valve is supposed to be shut and has a backward leak you get a murmur on...
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S2
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when is aortic regurgitation heard?
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on S2
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M & T valves are supposed to be opened on S2, so if stenosis is there it will create a murmur on S2
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T
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what is a murmur in a blood vessel called?
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a bruit
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what is a bruit?
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turbulence in a blood vessel
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where you hear a murmur the loudest is indicative of where the problem is
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T
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aortic stenosis occurs when?
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S1, systolic
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aortic regurgitation occurs during
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s2, diastolic
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pulmonic stenosis during
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S1
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pulmonic regurgitation
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S2
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mitral stenosis
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S2
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mitral regurgitation
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S1
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what part of the stethoscope do you use for the mitral maneuver?
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bell
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why place pt. on side during the mitral maneuver?
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this brings out left sided S3 and S4 and mitral murmur (esp. stenosis)
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during the mitral maneuver, pt breathes in & out
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T
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during aortic maneuver, pt. breathes in & out
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F, exhale & hold
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use bell for aortic maneuver
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F, diaphragm
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with aortic maneuver, auscultate APETTM areas
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F, don't do A
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what is the purpose of the aortic maneuver?
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it brings out aortic murmurs
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when would you hear a systolic murmur?
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b/n S1 and S2
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when would you hear a diastolic murmur?
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b/n S2 and S1
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when does a midsystolic murmur start?
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after S1
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when does a midsystolic murmur stop?
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before s2
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when does a pansystolic murmur start?
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w/S1
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when does a pansystolic murmur stop?
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@ s2
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when does a late systolic murmur start?
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in mid-late systole
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when does a late systolic murmur stop?
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persists up to S2
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when does an early diastolic murmur start?
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right after S2 w/o a gap
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when does an early diastolic murmur stop?
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usually fades into silence before the next S1
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when does a middiastolic murmur stop?
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may fade away or merge into a late diastolic murmur
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when does a late diastolic murmur start?
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late in diastole
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when are thrills usually felt?
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in murmurs 4 through 6
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what are the 2 components of the 2nd heart sound?
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A2 and P2
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during what stage of breathing do A2 and P2 separate slightly and S2 splits into its 2 audible components?
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inspiration
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in split heart sounds, what is delayed?
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P2
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in split heart sounds, what comes slightly earlier?
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A2
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what split heart sound is louder?
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A2
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split heart sounds are also heard in S1
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T
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what S1 split heart sound is normally louder?
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mitral
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what S1 split sound is softer?
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tricuspid
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splitting of the first heart sound varies with respiration
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F, it does not vary
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a split S2 on inspiration and disappears on expiration is OK
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T
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any split S2 sound that doesn't disappear is a problemo
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T (split sounds on expiration are pathological)
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any split S1 is a problem
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T
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normally, a notch in the pulse is NOT palpable
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T
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name 3 things that cause a small, weak pulse
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shock
hypovolemia severe aortic stenosis |
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what is the aka for a lg. boundary pulse?
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waterhammer
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what 4 things can cause a lg. boundary pulse?
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fever
anemia hyperthyroidism aortic regurgitation |
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what causes a bisferen's pulse?
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combined aortic regurgiatation and stenosis.
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what is pulses alternans indicative of?
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L ventricular failure
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