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49 Cards in this Set
- Front
- Back
RIght side of heart |
Right Av valve or Tricuspid valve-- LUB |
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Left side of heart |
Lt AV valve or Bicuspid valve- DUB |
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what side of the heart do you hear the Pulmonary semi lunar valve? |
LEFT |
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What side of the heart do you hear the aortic semi-lunar valve? |
RIGHT |
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Right Ventricle |
Low pressure pump that receives deoxygenated blood |
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Diastole |
during ventricular relaxation when the coronary arteries are perfused |
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S4 |
the extra heart sound you hear with S1 |
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S3 |
the extra heart sound you hear with S2 |
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Patients with coronary artery disease may have trouble getting blood to the ________ ________ since this is the major systemic pump chamber it greatly affects cardiac output. |
left ventricle |
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Average stroke volume |
70 ml |
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Test to determine stroke volume |
Swan-ganz line |
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Cardiac output of average adult |
4-8 liters per min |
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Patient has a pulse of 60...determine the stroke volume |
70mlx60bpm=4200ml/min or 4.2 liters/minute |
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Patient has a pulse of 80- determine the stroke volume |
70mlx80bpm=5600 ml/min or 5.6 liters/minute |
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Patients who have taken too much beta blocker may have |
low cardiac output |
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Ejection Fraction |
SV/EDV= % of total blood ejected from the heart w/each beat |
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Normal ejection fraction |
50-70% |
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Symptoms of low ejection fraction (below 50%) |
SOB fatigue cant complete ADLS |
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Cardiac cycle |
1 heartbeat, one depolarization and one repolarization, HR= 60-100 |
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Cardiac reserve |
ability of the heart to respond to the bodies changing needs. |
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EDV |
amount of blood in the ventricle right before ventricular contraction |
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ESV |
amount of blood in the ventricle right after ventricular contraction |
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Digoxin |
slows down heart |
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Heart rate related to cardiac output if above 150 |
decreased ventricular filling which decreases cardiac output. Needs digoxin! |
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Heart rate related to cardiac output if too slow |
Elderly may need pacemaker. athletes may have low resting heart rate as they excercise their heart muscle puts out more blood- maybe 100 ml their HR can lower because they have larger stroke volume (squeeze) so they still have an adequate cardiac output |
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the faster the heart beats the less filling in the chamber |
true |
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Preload |
=fluid amount of cardiac muscle fiber retention or stretch that exists at the end of diastole just before the contraction of the ventricles |
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What influences preload? |
venous return and the compliance of blood vessels |
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Can we put a patient into heart failure if we give too much fluid? |
Yes |
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Starlings law of the heart |
the greater the volume, the greater the stretch of the cardiac muscle fibers, and the greater the force with which fibers contract to accomplish emptying |
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Starling law |
states that the force of the blood ejected by the heart is determined primarily by the length of the fibers of its muscular wall. ie= an increase in diastolic filling lengthens the fibers and increases the force of muscular contraction |
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Preload increases |
anything that increases the fluid volume in the body |
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what is happening to jenns heart when shes studying |
for sure wearing out from palpations and nervous energy |
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Who wants a bloody mary |
Jenn |
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Cardiac index |
the cardiac output adjusted for the patients body size also called the patients body surface area (BSA). this is a more accurate indicator of the effectiveness of the circulation |
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What disorders can cause preload increases? |
renal disease congestive heart disease Vasoconstriction IV fluid Electrolyte imbalance |
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Preload decreases |
anything that decreases fluid volume in the body |
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preload decrease causes |
diuretics blood loss fluid restrictions |
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Afterload |
the force the ventricles must overcome to eject their blood volume into the pulmonary artery and aorta (BP) |
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The pressure in the arterial system ahead of the ventricles |
Afterload |
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The right ventricle must generate enough tension to open the pulmonary valve and eject its volume into the low pressure pump arteries, measured as pulmonary vascular resistance |
PVR related to afterload |
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SVR related to afterload |
afterload of the left ventricle is measured as systemic vascular resistance |
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silent killer |
hypertension |
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Pulmonary hypertension |
affects right sided afterload..no cure.. |
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Meds for pulmonary hypertension |
viagra revatio |
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what increases afterload |
hypertension, vasoconstriction |
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what decreases afterload |
diuretics, antihypertensive meds, vasopressors,dopamine, epinephrine |
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what does a vasopressor do? |
Increases heart rate |
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MI |
Heart attack |