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43 Cards in this Set

  • Front
  • Back
Pulmonary/Systemic Circulation
pulmonary vein-only oxygenated vein
pulmonary artery-deoxygenated blood
Internal Position/Surface Landmarks
-heart goes from right side of sternum to the midclavicular line
-apex is at bottom, base at top
-point of max impulse (PMI)-pulse at 5th ICP @ mid clavicular line
-goes from 2nd to 5th ICS
-pericordium
-mediastinum

-
Positioning of the atria and ventricles
-heart rotated so right ventricle is more anterior
-most of left ventricle is posterior
-->important for valves
Great vessels of the heart
-superior and inferior vena cava-return blood of body to right atrium
-pulm artery takes deox blood to lungs from right ventricle
-pulm veins take oxy blood lungs to left atrium
-aorta takes ox blood from left ventricle-->rest of body
Layers of the heart
-mostly connective tissue
-endocardium-CT continuous w inner lining of heart
-myocardium-inner layer
-contracts and pushes blood out of the heart
-pericardium-outter layer of heaer
pericardial cavity-in btw two laters with fluid
-epicardium in btw myo and cavity
Passage of blood through heart
blood in sup and inferior vena cava-->right atrium-->through atrioventricular valve (tricuspid)-->right ventricle-->heart contract-->trixupsid valve closes and blood out through pulm artery through pulm valve-->lungs
blood into pulm veins-->left atrium-->mitral valve (bicuspid)-->left ventricle-->heart contracts-->mitral valve closes-->blood out aorta through aortic valve
Valves
atrioventricular-btw artria and ventricles
pulmonic and aortic valves-btw ventricles and vessel
Sounds
when valves close
S1-when AV valves close-->blood ejected from ventricles
-LUB
S2-when semilunar valves close
-DUB
Systole pumping
ventricles contract
-right ventricle pumps blood into pulmonary arteries (pulmonic valve open)
-the left ventricle pumps blood into the aorta (aortic valve is open
Diastole pumping
-blood flows from the right atrium to the right ventricle (tricuspid valve open)
-blood flows from left atrium to left ventricle (mitral valve is open)
Cardiac Cycle
pressure builds until high enough to open a valve
diastole-ventricles relaxed-->filled with blood-->pressure increases-->aortic valve opens
longer period than systole
-your BP is the pressure needed to open the valve
-the higher the pressure, the more needed to be done/more contraction
Blood distribution in heart
more to right
less to left
-a little bit less blood in left side of heart during inspiration bc its sequestered in lung picking up O2
--left ventricular side has less volume->not going to take as long to squeeze out during systole
Differences in valve closings
-aortic valve is going to close quicker than pulmonic
--normal finding when you breathe in ****
S3 and S4
-if ventricle is tight--doesn't like blood coming in->make bruit, turbulent sound
S3-early diastole when blood is entering the ventricle
S4-at end of diastole when blood is already in ventricle and atria does a little contraction to get the last bit of blood into ventricle-->ventricle kick (atrial systole)
-when ventricle doesnt like this
-turbulent
Cardiac Output
CO=SVXHR
-btw 4-6 L of blood per min
Preload
-volume overload
-length at which ventricular muscle stretches at end of diastole
-as blood is pouring in during diastole-->this muscle is going to stretch
-excersize-->more blood return to the heart-->ventricles stretch more than at rest
-greater it stretches--greater the strength of next contraction (starling 4)
-if there is fluid--preload problem
-give diuretic
Afterload
pressure overload
-the opposing pressure that the ventricle has to generate to open the aortic valve (resistance against which the ventricle has to pump blood
-normally 5-10 mmHg
-if aortic vessel pressure is 80-have to get to 80
-the higher the pressure the harder the ventricle has to work
-pressure problem--an afterload problem
Significant subjective data
-orthopnea
-how many pillows do you sleep with
-fluid in cough
-dyspnea-hard to breathe
-gender
-men more heart disease until menopause
-race
-blacks 2X likely to have more hypertension
Assing the precordium
-inspect
-palpate
-auscultate
Blood Pressure
BP=CO X SVR
Systolic-pressure generated by left ventricle
-when LV ejects blood into aorta and arterial tree
Diastole-pressure generated by blood remaining in arterial tree
-when ventricles are relaxed
Assessing Blood Pressure
-pumping up high enough to be above systolic-occluded artery-no sound
-->letting air out slowly-->a little like a bruit (turbulent through artery)
diastolic-pressure generated by blood remaining in arterial tree-when ventricles are relaxed
-blood free flowing
Assessment of Carotid arteries
-palpate medial to sternomastoid muscle in neck
-one carotid at a time
-palpate in lower or upper third of neck, not middle
-if palpate near thyroid cartilage--carotid sinus--causes HR to drop

-auscultate carotid-bruit=carotic stenosis
-hypertension or high cholesterol
Jugular Venous Pressure
-JVP
-commonly expressed as vertical height (in cm) of column of blood (in head) in relation to the sternal angle (angle of Louis)
-mean height=hydrostatic pressure within right atrium
-6-10cm H2O
-use internal jugular vein
-right side closer and more direct to heart
-can see pulsation in sternal notch when someone is lying down
Inspection of the Jugular Venous Pressure
If you can't see the head of the pulsating column of blood in int. jug vein
-->because hydrostatic pressure so high head of column disappeared behind angle of jaw
-->increase angle andsit the patient bolt right up
OR
-because hydostratic p in right atrium so low that head lies behind clavicle
-->low reclining angle
-may need to lay down flat
**cite angle of patient when describing height
Assessment of the precordium
-inspect the anterior chest for lifts of heaves
-palpate across the precordium
-palpate apical pulse
-APT M (aortic, pulmonic, tricuspid, mitral valve)
-percuss around the 5ICS mid clavicular line
-
Lifts and Heaves
-heart enlarged (ventricle dilation from too much fluid or ventriclar hypertropy)
-lift during systole
Thrills
-murmur
-turbulent blood flow
-vibration
-feels like a cat purring
Hypertrophy
-heart bigger
-apex lower and further over
-moves maximal impulse
Auscultation routine
-hear aorta on right side (hear better)
-hear pulmonic on left
opposite bc heart is twisted in the body
-tricuspid-5 ICS along sternal border
-mitral valve best heard 5ICS MCL (same as PMI)
Herbs-3 ICS where LUB DUB sound same

-listen on left lateral decubitus position
Identifying S1 and S2
-apex: S1>S2 (LUB)
-base-S2<S1 (DUP)
-S1=R wave on ECG
-S1-carotid artery pulse
Physiological Split S2
-during inspiration
-aortic valve closes before pulmonic
--->since there is LESS blood on the LEFT it contracts faster
S3 Auscultation
-ventricular gallop
boom boomboom
Lub dup dup
low pitch
hear with bell
-decreased compliance of ventricle w/ CHF on right side->pathological S3
-lie on side to listen
-pregnant, anemic, hypothyroid
-can be physiological or pathological
S4 Auscultation
-atrial gallop
boomboom boom
low pitched
-hear through bell
-sound right before S1
-almost always pathological
Systolic Clicks/Systolic Extra Sounds
-early systolic ejection click
-midsystolic click
-aortic stenosis-calcification of valves-->doesn't open to nicely
--turbulent
--make a noise
-midsystolic click-btw S1 and S2
-valves go backwards-->make a clicking sound
Diastolic Extra Sounds
-normally opening of AV valves is silent
-stenosis of valves-->open with noise
-sharp and high pitched
-open and snap
-hear in diaphragm or 3/4 ICS at sternal border
Murmurs
-like a bruit
-bolowing, swishing sound of turbulent blood flow through stenosed or loosely closing valve
-pay attention to timing, location, loudness/intensity (scale 1-6)
Types of Murmurs
*midsystolic ejection murmurs
-aortic and pulmonic stenosis
*pansystolic regurgitant murmurs
-mitral and tricuspid regurgitation
*diastolic rumbles of AV Valves
-mitral and tricuspid stenosis
*Early diastolic murmurs
-aortic and pulmonic regurg
Midsystolic Ejection Murmurs
if aorta or pulmonic valves are stenosed (tight)
-open-murmur
Pansystolic Rugurgitant Murmurs
-in systole
-tricuspid and mitral close improperly
-regurgitation
-blood back
-more common w mitral valve
Diastolic Rumbles of AV Valves
-valvular defect
-much more serious
-if mitral and tricusp stenosed-->close-->murmur
Early Diastolic Murmurs
-valvular defect
-much more serious
-aortic and pulmonic do not close properly-->valves go back
-blood back
-can cause syncope
Rub
painful rubbing sound during systole and diastole
Scaling of heart sound intensity
1-barely hear
2-louder-normal
3-louder
4-should hear a thrill
5-very loud when part of stethoscope on it--out of chest
6-pretty much hear without stethoscope