Cardiac Flashcards
preload
how stretched the LV cardiac muscle is after the end of diastole.
afterload
amount of resistance the LV is ejecting against the aorta
stroke volume
amount of blood ejected with each heartbeat
cardiac output
amount of blood pumped out of LV each min!
how to calculate cardiac output
to calculate the amount of blood ejected in each MIN
you have to multiple SV(amount of blood ejected each heart beat) and heart rate(heart beats per minute)
what are we looking at when we look at a 12-EKG
its a ONE TIME THING we want to see the rhythm
that there has to be a P before every QRS
R to R distance is the same
QRS and T should be same direction
HEIGHTS DONT MATTER
hor: time
ver: amplitude
with hor and ver = you can calculate the heart rate.
what does it mean if the T wave is downwards and QRS is upwards
heart disease
what does each part of EKG mean
P: atrial depolarization
QRS: v depolarization and unseen atrical repolarization
T: v depolarization
U: you shouldn’t see this wave. if you do this is bad because its disease. its the Purkinje fibers contracting.
what does it mean if R to R and if there is P wave mean
normal sinus rhythm.
impulse is from SA node or pace maker
normal sinus rhythm
heart rate 60 to 100 bpm
reg rhythem
P wave before QRS
same R to R distance
sinus brady
less than 60
regular
p before QRS
same R to R distance
sinus tachy
more than 100
regular
p before QRS
same R to R distance
what is a fib
uncoordinated electrical activity. atrial muscle is twitching its NOT contracting to push blood into the ventricle. this is bad
how can we see a fib on EKG
no P before QRS
R to R distance don’t match
how can we treat afib
warfarin: for high risk for clots
metoprolol for HR and BP
how is a fib different from a flutter
its more organized whereas a fib is more chaotic and faster HR.
but there is not P wave. R to R waves are like saw tooth-like baby shark
what does ST elevation indicate
patient has chest pain so if they have ST elevation: plaque is building up and the patient is not getting oxygen.
there is ischemia: MI
pericarditis
HYPERkalemia
ST depression
valve disease
HYPOkalemia: digoxin
coronary atherosclerosis patho
coronary arteries give oxygen to heart muscles.
atherosclerosis is when cholesterol and lipids are building up and turning into a plaque(atheroma) to obstruct circulation.
THROWBACK: fatty streak starts to happen as a kid. but not all of them turn into lesions so it depends on their genetics or smoking or HTN. the lesions will trigger an inflammatory where monocytes(WBC) and platelets gather up. the smooth muscle starts to grow. the smooth muscle has a fibrous cap that covers the inflammation and lipids that is unstable. at some point its going to rupture. when this ruptures, more platelets/clotting factors causing blood to POOL. obstruction will cause an MI!!!
atheroma
walls of the arteries will start to accumulate lipids and scar tissue to make plaque.
signs and symptoms of coronary atherosclerosis
ASYMPTOMATIC
chest pain: no oxygen to heart
older patients: SOB, weakness and NO ANGINA because of neuropathy from DM
women: SOB, nausea, weaknes “GI problems”
signs and symptoms depend on where the plaque obstruction is
coronary atherosclerosis risk factors
Non-Modifiable: Age: men 45 women 55 Gender: men but women after 55 Race: AA Modifiable: HTN DM Diet Exercise.
what lab for coronary athero
FLP to see
cholesterol
tri
LDL
HDL
how often should patients get FLP
- over 20? every 5 years
- MI, CABG, Heart catheter? within few months of discharge, every 6 weeks then we check 4 to 6 months for maintenance
educate your parent with hyperlipidemia on diet
- MEDI DIET: veggies and fish and only red meat 2 a twice
- watch cholesterol should be less than 200mg PER DAY
- sat fat should be 7 percent of the calories
- fat should be between 25 to 35 percent of total calories(total calories depends on your weight) most fat should come from mono fats (20 percent) whereas poly is 10
- carb is 50 to 60 percent
- protein is 15 percent
- fiber is 20 to 30 percent
educate hyperlipidemia parent on exercise
work out 30 mins a day but make sure you are able to talk while you exercise. exercising is good because this will get your blood circulating and lower the triglycerides in your blood.
educate your hyperlipidemia patient on smoking
smoking is bad because it can 1. activate your sympathetic NS and this causes an increase in HR and BP vasoconstriction which does not allow blood passage. 2. damages your BV so you increase in platelet aggregation. if the platelets stick together then clots can happen. 3. also hemoglobin will bind to CO2 instead of O2
what meds should we give to a patient with hyperlipidemia?
Statins and fibs restrict lipoproteins
Ezetimibe decreases cholesterol absorption
Chole (Bile) removes lipoprotein
when should we give statins and with what
food and at night because thats when most of the cholesterol is being made
angina patho
when the heart muscle is not getting enough oxygen.
stable angina: relieved by rest and nitro
unstable angina: NOT relieved by rest or angina STEMI BBY
patient is experiencing chest pain what should we tell them to do
sit down and rest so the pain can go away then take the nitro. dont just give them morphine give them O2 for oxygen
why do patients give chest pain
exercise
stress increases heart workload
cold weather bc vasoconstriction and body is using energy to warm up
heavy meal because all the blood goes to the GI tract for digestion
how do patients describe chest pain and ASK WHAT?
choking sensation
elephant on chest
indigestion
chest pain: neck, jaw, shoulder, left arm
SOB
DM patients: numbness in arms but watch out they might not feel anything at all
ASK: WHAT WERE YOU DOING THAT CAUSED THIS CHEST PAIN
what assessment do we need for chest pain
12 lead EKG
Troponin: draw 3 times 6 hours apart
Chest X-ray to rule out pulmonary issues
chest x-ray preparation
- No preggo
- no metals
Angina Drugs
- nitro
- beta blocker
- calcium (amlodipine)
- antiplatelet: ASA and Plavis
- Anticoag: Heparin and Enoxaparin
- O2
Nitro
What does it do?
Check what?
How many?
S/E?
route
DRUG INTERACTION
decreases preload and afterload
check BP
give nitro 3 times 5 mins apart NO WATER
HA and hypotension
tabs treat patches prevent
VIAGRA
nitro patch
patient (3)
nurse (1)
you can swim
take it off at night time
you can put it on chest, left arm, shoulder, or BACK
date time initial
beta blockers
assess what
educate patient about what?
contraindiacted in which patients
HR and BP bc blocks sympathetic NS
wean off to prevent rebound HTN and check blood sugars because it can mask hypoglycemia (shaking, sweating, sleepy, dizzy)
patients with asthma. CALL DR if patient has wheezes, crackles, or SOB
calcium channel blockers
what does it do
check what
prevent or reduce vasospasm which can be good especially during heart cath because that can cause vasospasms
BP
anti-platelet
max ASA
check what
avoid what
325 mg
check BP and HR(compensatory) H and H, Vitals, GI BLEEDS and BLEEDING
AVOID IM injections, frequent BP checks, drawing blood, starting IV sites. PUT PRESSURE IF PATIENT IS BLEEDING
anticoag
indications:
heparin
check what?
a/e
enoxparin
NURSE DO WHAT?
DVT
aptt(45 to 75) if IV
antidote: protamine sulfate
HIT
give the prefilled syringe with the airbubble to seal the med in the tissue
oxygen toxicity
N
V
nasal stuffiness
coughing
substernal pain
cardiac stress test
- what should the patient do before the test?
- what should the nurse do before the EKG
- why do we do this test?
- how do we do this test?
- what side effects can the vasodilators cause?
- how long does it take?
- max HR?
- what should the patient avoid?
- does the patient have a NPO status. if so, how many hours?
- what meds should we hold?
- when should we stop the test?
- what is a positive test?
- what should the nurse start and monitor?
- what should the patient do and should not do AFTER test?
- signed consent for CABG in case patient has heart attack and wear comfy shoes and clothes. make sure they do NOT work out three hours before this stress test
- baseline vitals
- stressing the heart to see how well the coronary arteries work. we want get 80 to 90 percent of HR
- arm cramp, treadmill, vasodilators
- flushing, HA, dizzy(annoying izzy is blushing)
- 1-3 hours
- max HR= 220- age
- alc, tobacco, caf
- yes, 4 hours NPO
- beta blockers because it drops the HR
- patient compains of chest pain, dizziness, fatigue, cramping.
- Pt complains EKG or vital changes STOP its a positive test
- IV SITE in case patient has a heart attack. Monitor the vital signs via telemetry and cold and clammy
- no baths after 1-2 hours after stress test because their vessels are dilated from the vasodilator or exercise.
Nursing Process for ANGINA
ASSESS
DX
Plan
NI
Eval
- ASSESS
- COLDSPA
- Risk factors
- what were you doing before
- level of understanding
- Physical assessment: Vitals, Aus Heart Lungs, Abdomen, Pulses, Edema
- DX
- Ineffective tissue perfusion
- anxiety
- deficient knowledge
- Planning and Goals
- Perserve heart muscles
- NI
- SIT DOWN
- High-Fowlers
- O2
- Get vitals
- EKG
- Nitro
- ANXIETY MANAGEMENT
- balance activity and rest
- educate their patient
REVIEW CASEE STUDY
REVIEW CASE STUDY
how good is nitro good for and how should the patient store it
6 months and patient should store it in a dark glass bottle
what diet should patients with angina be on if they have a lot of weight gain like 8 pounds in a week(should no more than 5 pounds)
sodium restriction: 2g
fluid restriction: 2L
MI is an acute coronary syndrome that includes
STEMI nonSTEMI and unstable angina
what is the GOAL of MI
we want to perserve cardiac muscle that isnt dead
what are signs and symptoms of MI
chest pain
SOB
N
anxiety
Indigestion
Cold, pale, moist, sweating skin
what is the FIRST med we should give to patient with MI since CP not relieved by nitro
nitro IV drip
morphine IV push
how can we diagnose patient with patient with MI
EKG: Read within 10 mins
Troponin: 3 times 6 hours apart
What other meds do we give with MI
- Nitro
- MORPHINE
- Ace(DIREUTIC)
- Beta
- tPA
- Anti-platelet
- Anti-coag
- CARDIAC REHAB
morphine
check what
RR
urine output: myoglobin?
SOB
ACE
check what
what does it do
check BP
diuretic because inhibits a1 converting and a2 and a2 stimulates aldosterone. now if you block aldosterone you will prevent the reabsorption of water and sodium retention.
remodels the heart muscles
tpa
given within?
indication
contraindicated?
6 hours
declots PICC lines or central lines
h. stroke, surgery in 3. weeks
why can’t we give patients with h stroke tpa
because it get rid of those protective clots
Nursing Process for MI
- Assess
- Baseline vitals
- Aus Heart, Lung, Abdomen
- COLDSPA
- UO(could have AKI)
- IV site(bc they can have another MI)
- EKG reading
- Assess for post MI
- pulmonary edema
- HF
- Cardiogenic shock
- NI
- High Fowlers
- VS every 4 hrs
- BED REST
- POST MI COMPLICATIONS
POST MI COMPLICATIONS
Cardiogenic shock
pulmonary embolism (NOTIFY DR IF THEY HAVE EDEMA OR CRACKLES)
heart failure
what should do you do if patient has positive stress test
Cardiac Cath
remember after troponin and EKG you do
cardiac stress test.
positive? cardiac cath
three types of perc. coronary interventions
- perc trans luminal coronary angioplasty
- coronary artery stent
atherectomy
PERCUTANEOUS CORONARY INTERVENTIONS
- what should patient do before
- what meds will the patient be on
- is this treatment GOLD
- what is this procedure
- what is stenosis
- What should the nurse assess before
- patient might feel:
- Is the patient NPO, if so how long?
- What should the nurse do for RIGHT after cath lab?
- how frequent should we take vital signs?
- What should the nurse ASSESS for?
- how should the nurse assess?
- Patient should be in what position
- How long should the patient should be in that position?
- Why is the patient in pain after cath lab?
- signed consent because patient can have ANOTHER MI so we gotta do CABG
- plavix and aspirin
- HELL YEAH GOLD STANDARD
- PCI: this procedure checks how bad the CAD is and stenosis. CAN USE WITH DYE so the doc is gonna go into via groin area into the femoral artery ALLL way to the coronary artery with a balloon tipped catheter to where the plaque is. The ballloon will INFLATE to crack that plaque and deflate and remove the balloon. 60 min procedure. CAS: Coronary artery stent: same shit but when balloon is up. a MESH STENT will be up there for structural SUPPORT. sometimes the doctor will coat the STENT with ASA. Atherectomy: shave that plaque
- narrowing of CORONARY blood vessels
- Assess renal function (UO), allergies,
- warm, flushed feelings
- yes, 8 hours
- VITAL SIGNS
- over 6 hours, every 15 mins in first hour, second hour 30 times 2, every hour times 4
- ASSESS GROIN FOR HEMATOMA (it should be soft. bad if its hard because hematoma is painful and its basically blood trapped under skin. Patient is going to be sleeping so they won’t know. Assess pedal pulses.
- Use a doppler for pedal pulses and marker it.
- supine.
- 6 hours
- BACK PAIN and HEMATOMA(BAD)
now why would we do a CABG
cardiac cath didn’t work
CABG
- what should the patient do before?
- nurse should get what before this procedure
- what is this procedure?
- what incisions will the patient have
- what meds can the doc stop and why?
- What should we assess for after the procedure when they come back 2 days after ICU
- what should the patient do after 48 hours? should they rest in bed after a CABG
- if they should ambulate, how many feet
- What labs should the nurse monitor
- signed consent
- baseline vitals and INCENTIVE SPIROMETRY
- this procedure is when a vessel from the leg is chosen and grafted to the occulded site to let more blood flow.
- check the small one on leg and big one chest
- stop the anti coags and platelets because of BLEEDING
- VS, UO (kidney damage), LOC, Aus Lungs Heart & Abdodmen, Tele
- NO REST. SIT in chair get. that blood moving to prevent lung collapse and DVT.
- yes AMBULATE. 25 to 100 feet
- infection (WBC, CBC) UO (AKI)
hypertension patho
BP=COxPR
cardiac output=amount of blood ejected per min
PR: peripheral resistance
why is hypertension is a silent killerr
asymptomatic. but it can damage your heart(MI) brain(stroke) eyes(vision loss), and kidneys(CKD). ⅓ of patients have it and they dont even know.
primary HTN
95 percent patients have this and its because of no IDENTIFIED cause
secondary HTN
Renal
Preggo
NSAIDs(fluid retention)
Tumor
HTN Expected findings
HA
dizziness
vision loss
fainting
but for the most part: no symptoms
How do we dx patient with HTN
2 or more readings on bare arms at heart level and patient is sitting.
when a patient has HTN was should we monitor
I and Os; UO BUN and Creat because HTN can ruin kidneys
HLD: hyperlipidemia is a risk factor
DM: glucose levels
EKG
HTN meds
-
DIURETICS
- thiazide
- loop
- potassium sparing (amiloride)
- spironolactone
- beta
- ACE
- ARBs
- Clonidine
- Calcium channel
thiazide assess and do what
give this med with food because GI upset
assess K because K loss
loop
monitor BP because hypotension
HR idk why
get K too because K loss
why is clonidine given
for uncontrolled HTN