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49 Cards in this Set

  • Front
  • Back

RIght side of heart

Right Av valve or Tricuspid valve-- LUB




Left side of heart

Lt AV valve or Bicuspid valve- DUB

what side of the heart do you hear the Pulmonary semi lunar valve?

LEFT

What side of the heart do you hear the aortic semi-lunar valve?

RIGHT

Right Ventricle

Low pressure pump that receives deoxygenated blood

Diastole

during ventricular relaxation when the coronary arteries are perfused

S4

the extra heart sound you hear with S1

S3

the extra heart sound you hear with S2

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

Average stroke volume

70 ml

Test to determine stroke volume

Swan-ganz line

Cardiac output of average adult

4-8 liters per min

Patient has a pulse of 60...determine the stroke volume

70mlx60bpm=4200ml/min or 4.2 liters/minute

Patient has a pulse of 80- determine the stroke volume

70mlx80bpm=5600 ml/min or 5.6 liters/minute

Patients who have taken too much beta blocker may have

low cardiac output

Ejection Fraction

SV/EDV= % of total blood ejected from the heart w/each beat

Normal ejection fraction

50-70%

Symptoms of low ejection fraction (below 50%)

SOB fatigue cant complete ADLS



Cardiac cycle

1 heartbeat, one depolarization and one repolarization, HR= 60-100

Cardiac reserve

ability of the heart to respond to the bodies changing needs.

EDV

amount of blood in the ventricle right before ventricular contraction

ESV

amount of blood in the ventricle right after ventricular contraction

Digoxin

slows down heart

Heart rate related to cardiac output if above 150

decreased ventricular filling which decreases cardiac output. Needs digoxin!

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

the faster the heart beats the less filling in the chamber

true

Preload

=fluid amount of cardiac muscle fiber retention or stretch that exists at the end of diastole just before the contraction of the ventricles

What influences preload?

venous return and the compliance of blood vessels

Can we put a patient into heart failure if we give too much fluid?

Yes

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

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

Preload increases

anything that increases the fluid volume in the body

what is happening to jenns heart when shes studying

for sure wearing out from palpations and nervous energy

Who wants a bloody mary

Jenn

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

What disorders can cause preload increases?

renal disease


congestive heart disease


Vasoconstriction


IV fluid


Electrolyte imbalance

Preload decreases

anything that decreases fluid volume in the body

preload decrease causes

diuretics


blood loss


fluid restrictions

Afterload

the force the ventricles must overcome to eject their blood volume into the pulmonary artery and aorta (BP)



The pressure in the arterial system ahead of the ventricles

Afterload

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

SVR related to afterload

afterload of the left ventricle is measured as systemic vascular resistance

silent killer

hypertension

Pulmonary hypertension

affects right sided afterload..no cure..

Meds for pulmonary hypertension

viagra


revatio

what increases afterload

hypertension, vasoconstriction

what decreases afterload

diuretics, antihypertensive meds, vasopressors,dopamine, epinephrine

what does a vasopressor do?

Increases heart rate

MI

Heart attack