Exam 3- Cardiac 1 Flashcards
Systemic circulation-
what side of heart
what pressure
produces
Left side of heart to the rest of body with exception to the lungs
High pressure
Produces systolic blood pressure
Pulmonary circulation-
what side of heart
what pressure
Right side of heart with lungs
its low pressure circulation
“Widowmaker”
what side of heart
if blockage
Coronary Blood Supply
Left ventricle is most important for action
If blockage in LAD then that’s where we see sudden cardiac arrests from heart attack
Cardiac cycle
uses what
contraction/followed by
Uses the- Atria //Ventricles
Contraction of atria, followed by contraction of ventricles a fraction of a second later
Cardiac output-
amount
= to
amount of blood pumped in one minute
= to sv x hr
Stroke volume-
amount
amount of blood in one beat
Cardiac output is influenced by 4 factors
h
p
a
c
heart rate
preload
after laod
contractility
Preload- increased with
f
r
Cardiac Output
fluid volume excess
regurgitation
After load- increased by
h
v
Cardiac Output
hypertension
vasoconstriction
Contractility- what is it
Cardiac Output
strength of the heart muscle
pre load
what is it
end
volume coming into ventricles
end diastolic pressure
afterload
what os it
resistance left ventricle must overcome to circulate blood
What will happen if preload is increased?
heart needs
it will
heart needs stronger contractions
it will increase the stroke volume
What about increased after load?
hard
so there
unless
–harder to pump
so there is less blood going out
unless contractions are increased
How about decreased contractility? –
decreased
decreased stroke volume
What happens when the heart is in optimal condition?
low
high
normal
low heart rate
a high contractility
normal cardiac output
Ejection fraction
what is it
what normal
% of blood that is pumped out of ventricles during systole
Normal is 50-70
what is it influenced by x3
Ejection fraction
after load,
preload
contractility.
how to measure ejection fraction
looks at
Measure with echocardiogram.
Looks at left ventricle
CXR-
what looking at
size and basic deformities of the heart
before the Stress tests-
make sure
dress
mo
only
make sure pt is npo
dressed conformable,
no caffeine
only meds that they can take are the meds that they are told they can take
stress test
do what
looking for
Walk/run on treadmill-
look for chest pain/ dyspnea with exertion
MRI-
identify
identify ischemic tissue
CT-
observe
observe for calcium deposits
PEt
look
look at myocardial perfusion
Echocardiogram
checks-
looks at(w/c/v)
checks motion of the heart
Looks at wall thickness, chamber size and velocity of blood flow
Ejection fraction-
what means issue
means what
also means
what’s significant problem
Echocardiogram
when less then 55% there’s an issue
Means a low cardiac output
Means decreased tissue perfusion
When less then 30% it’s a significant problem
Trans esophageal echocardiogram (TEE)-
what happens
looks for
camera down pts esophagus to look at heart-
looks for cardiac strictures and valves
Pericardiocentesis
does what
remove fluids from pericaridum
Cardiac catheterization- post cath
check
can go
apply
check
keep
check for bleeding
can go radial or femoral
apply direct pressure
check for distal pulses
keep the limb straight
if went through radial-
do what for how long
cardiac cath
pressure for 2-4 hrs after
if femoral- cardiac cath
held
on what-how ling -with what
use
needs
held straight
on bed rest /2-4 hrs/with hob flat-
use urinal and bedpan only
need fluids
Evaluating Cardiac Risk
genetic
health assessment
physical assessment
Genetic- hx of disease
Health assessment-, hyperlipeidemia, diet , smoking, exercise, drugs-follw up on dypnea, chest pain
Physical assessment- listen for sounds, gallops,
Cardiovascular disease-
any
leading
heart disease
any disorder of heart or blood vessel
leading cause of death and disability
Coronary artery disease
is what
can have
heart disease
- impaired blood flow to heart
Can have symptoms or be asymptomatic
Atherosclerosis-
progressive
correlated with
heart disease
progressive plaque accumulation and narrowing
Correlated with elevated blood lipid levels
LDL-
deposits of cholesterol in vessels
HDL
- transports to liver for excretion
Triglycerides-
excess fat
what age men/women
what gender
what for women
what race
what plays a role
non modifiable -Risk Factors for Cardiac Disease
Age –men 45+ women 55+
Gender-men
Women have increased risk in increased menstrual cycles
Genetics/ family history
black
Hyperlipidemia-
what is it
what’s not bad
what is bad
modifiable Risk factors for Cardiac Disease
increased lipids,
LDH A- not so bad
, LDH B proven to oxidize and build up plaque.
HTN—->
what numbers
whats best
modifiable Risk factors for Cardiac Disease
140/90,
diastolic <80 is best.
Diabetes—-
why a risk factor
modifiable Risk factors for Cardiac Disease
2-4 times more likely to have heart disease or a stroke.
. Smoking-
what does carbon monoxide do
waht does nicotine cause
modifiable Risk factors for Cardiac Disease
carbon monoxide damages blood vessels- leads to plaque build up.
Nicotine causes-tachycardia, vasoconstriction.
Obesity causes- x3
considered with what///what size in men and women
modifiable Risk factors for Cardiac Disease
HTN,DMII,Hyperlipidemia
considered with waist circumference >40 for men, >35 for women
Lack of exercise- what does exercise do
modifiable Risk factors for Cardiac Disease
exercise does strengthens heart, decreases cardiac workload, lowers BP, lowers wt. Lowers lipids
- Diet-
what diet are we promoting
high
low
modifiable Risk factors for Cardiac Disease
eat high fiber,
low fat, simple carbs and Na+
How do I decrease my risk for heart disease
5/7 of these
1-no
2-what bmi
3-how much exercise
4-what diet
5-what cholesterol
6-waht bp
7-what fasting glucose
1.No smoking
- Bmi less then 25
- 150 minutes per week of excercise
- Healthy diet
- Total cholesterol less then 200
- Bp less then 120/80
- Fasting glucose less then 100
Increased what levels
what helps lower
other risk factors of heart disease
Increased homocysteine levels
b vitamins- folate, b6 and b12
Metabolic syndrome-
other risk factors of heart disease
abdominal obesity- waist circumference of over 40 in men and over 35 in women///
Metabolic syndrome-
serum triglyceride
HDL- men/women
other risk factors of heart disease
serum triglyceride of 150 or above,
hdl 40 or lower in men or 50 or more in women
Metabolic syndrome-BP
other risk factors of heart disease
bp 130/85 or greater
Metabolic syndrome- fasting glucose
other risk factors of heart disease
fasting glucose of over 100
Premature menopause
causes
Risk factors unique to women
what hdl
what ldl
low hdl,
high ldl
Oral contraceptives-
bp
what risk
Risk factors unique to women
increase bp
clotting risk
Hormone replacement therapy-
increases
metabolized where
leads to
Risk factors unique to women
increase cad,
metalbozed in liver
leads to formation of clots
Cholesterol- what’s normal
total
ldl
hdl
triglycerides
Diagnostic Tests
total less then 200
ldl less then120
, hdl greater then 35
triglycerides less then 150
C-reactive protein-
see what
Diagnostic Tests
inflammation on patient
Exercise ECG-
look for
which is a sign of
Diagnostic Tests heart disease
look for st depression
signs of ischemia
what smoking
how much exercise/how often
Risk management-heart disease
Smoking- quit
Exercise- 30 mins- 5-6 times a week
Diet-
add
have
high
low
Risk management-heart disease
add vitamin b,
have alcohol in moderation,
eat high fiber,
low fat, simple carbs and Na
how to lower HTN
decrease
increase
decrease
Risk management-heart disease
decrease sodium
, increase exercise
, decrease stress
manage what
daily aspirin-only when-does what
risk management heart disease
Diabetes- manage appropriately
Daily aspirin- only if prescribed- decreased inflammation and prevent clots
Statins-
most
does what
monitor what lab
watch for what
Medications to Lower Lipids
most common-
reduces total and ldl-
monitor LFT liver function
watch for rhabdomyolosys