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128 Cards in this Set

  • Front
  • Back

Electrocardiogram (ECG)

Monitors PQRST & U waves of heart

Why is ECG used?

Dx dysrythmias, myocardial ischemia, injury, infarction & monitor electrolyte imbalance or med admin

P Wave represents?

Firing of SA node, atrial depolarization

QRS represents?

AV depolarization through ventricles

T wave represents?

Repolarization of ventricles

U wave represents?

Repolarization of purkinje fibers or associated w/ hypokalemia

Systole

Contraction, ventricles eject blood

Diastole

Relaxation, blood flow into ventricles

Stroke Volume (SV)

Amount of blood ejected per beat

Cardiac output (CO)

Amount of blood pumped by each ventricle per min.

CO formula

CO=SV×HR

Norm. CO

4-8 L/min

Cardiac index formula?

CO÷BSA

Cardiac index norm.

2.8-4.2 L/min/m^2

CVD inc. With?

age

Leading cause of death in adults >65yo

CVD

CAD most common cardiovascular problem due to?

Atherosclerosis

Cardiovascular change result of

Aging, disease, environmental factors, lifetime behaviors

Age related changes include

Dec. Stress response, inc. SBP and dec./no change in DBP, ortho hypotension, postprandial hypotension, inc. collagen, dec. Elastin

Subjective CVD Qs

Hx present illness, past health Hx, past/current meds, past surg.

CVD risks factors

HTN, Sedentarty life, DM, obesity, genetics, tobacco, abn. Lipids

CVD objective data (vitals)

Vitals BP bilateral SBP should not dec. More than 20 mmHg from supine to standing

CVD objective data inspect, palate, auscultate

Inspect: edema, neck vein distention, stasis ulcers, nail clubbing.



Palpate: extremity moisture, temp, pulse, cap. Refill, edema



Auscultate: major arteries, bruit

Bruit is

Abn. Flow causing humming or buzzing

Cardiac biomarkers/enzymes

Released into blood when heart suffers ischemia

Troponin levels help Dx?

Acute coronary failure

Troponin specific to heart?

Troponin T (cTnT)/ Troponin I (cTnI)

Troponin rise, peak, detected for?

Rise: 4-6hr



Peak: 10-24hr



Detected: 10-14 days

Creatine kinase (CK)

Found in heart (specific CK-MB)

CK-MB rise, peak, baseline return?

Rise: 3-6hr



Peak: 12-24hr



Baseline return: 12-48hr

Myoglobin is

Heme protein found in heart, sensity to early myocardial injury, limited in MI Dx

C-reactive protein

Produced by liver during acute inflammation, inc. Lvl linked to presence of atherosclerosis/1st occurance of heart attack.

Serum lipids consist of

Triglycerides, cholesterol, phospholipids

Total cholesterol lvls

<200 mg/dL

LDL (Bad cholesterol) lvl

Transport cholesterol to cells from liver



<130mg/dL

Triglyceride lvls

M: 40-160 mg/dL


F: 35-135 mg/dL

HDL (good cholesterol) lvls

Protect coronary arteries by transporting cholesterol to liver


M: >45 mg/dL


F: >55 mg/dL

Chest X-ray Dx

Show heart shape, size, anatomical changes. Records enlargement of heart, pericardial effusion, pulmonary congestion.

Electrocardiogram (ECG) is used to

Asses heart activity, monitor resting/ambulatory ECG, stress testing

Echocardiogram is

Ultrasound of heart, with/without contrast, provide info regarding structure/motion of heart, measure ejection fraction

Ejection fraction

65-70% percentage of end diastolic blood volume ejected,can also measure during systole. Provide info on left ventricle during systole

Cardiac catheterization

R Side: measure pressures


L Side: evaluate coronary arteries

Cardiac catheterization edu, consideration, actions

NPO 8hrs, consent form, client understand procedure, iodine/shellfish allergy, renal function

Coronary angiography is for

Identifying coronary blockage using contrast medium

One of the most modifiable risk factors that lead to CVD is

HTN

Inc. BP inc. Risk for

MI, Heart attack, Stroke, Renal disease

Systemic vascular resistance

Force opposing the movement of blood within vessels

Normal BP range

SBP: <120 mmHg


DBP: <80 mmHg

Prehypertension range

SBP: 120-130 mmHg


Or


DBP: 80-89 mmHg

Stage 1 HTN range

SBP: 140-159mmHg


Or


DBP: 90-99 mmHg

Stage 2 HTN range

SBP: > OR = 160 mmHg


Or


DBP: >OR= 100mmHg

Primary HTN is

AKA essential/idiopathic HTN


Inc. Without identified cause


Exact cause unknown, several contributing factors


Secondary HTN

inc.BP with specific cause (med, kidney disease), Tx aimed at removing or Tx cause.

HTN risk factors

Age, DM, Obesity, Stress, Excess sodium, ETOH, inc. Serum lipids.

HTN clinical manifestations are

Monitor: Headaches, facial flushing, fatigue, dizziness/fainting, palpation, angina, renal change, dyspnea, visual disturbance

HTN target organs are

Heart, brain, PVD, kidney, eyes

Overall HTN goals are

Control BP, dec. CVD risk factors/target organ disease, lifestyle modifications(weight loss #1)

2 main action of drug therapy for HTN

Dec. Volume circulating blood


Reduce SVR

Diuretics for HTN

Dec. Volume, promote Na/H2O excretion, reduce plasma volume/vascular response to dopamine, nor-epinephrine


Monitor for hypokalemia: muscle weakness, irregular pulse, dehydration

Ace inhibitors function by

Prevent conversion of angiotensin 1 to angiotensin 2 (BP enzyme) preventing vasoconstriction.

Captopril Rx

Monitor BP, Hypotension (fatigue, dizziness, nausea, blurry vision, lightheadedness) monitor edema (evidence of heart failure)



Can cause renal/heart complications



Report cough/angioedema severe adverse effect

Calcium channel blocker

Blocks Ca access to cells causing vasodilation, dec. BP/HR

Nifedipine Rx (Ca blocker)

Monitor BP, hypotension, use with caution in pts with heart failure.



Educate pt how to take pulse, call HCP if irregular or lower that norm.



Avoid grapefruit juice, potentates med, inc. Hypotensive effects.

What is atherosclerosis?

Hardening of arteries

What are arthromas?

Fatty deposits that prefer coronary arteries

Stages of atherosclerosis development are

1. Chronic endothelial injury


2. Fatty streak


3. Fuberous plaque


4. Complicated lesion

Non modifiable risk factors for CAD are

Inc. Age, genetics, ethnicity (more common in white men), gender (more common in men than women until 75yo)

Modifiable risk factors of CAD are

Obesity, DM, physical act., serum lipids, BP <140/90 mmHg, tobacco, psychosocial (stress, anger, depression)

What should a CAD assessment include?

Health/Family/psychosocial Hx, diet, activity, presence of cardio symptoms.

What type of nutritional therapy should be considered in CAD pts?

Lower LDL cholesterol

Low LDL cholesterol meals include...

Dec. Saturated fats and cholesterol (vegetable oil, shellfish, nuts, seeds margarine)

What foods are major sources of saturated fats and cholesterol?

Red meat, egg yolks, whole milk products (butter, sour cream, cream cheese)

Initiate lipid lowering drug therapy if...

Diet and exercise are ineffective

The type of med most commonly used that functions by inhibiting synthesis of cholesterol in liver, dec. LDL, and inc. HDL?

Statins

When on statins, why are liver enzymes monitored?

Liver damage/myopathy

A serious side effect of Simvastatin (zocor) and Gemfibrozil (lopid) is...

Liver failure, rhabdomyolysis (muscle pain, weakness)

Antiplatelet therapy functions by

Dec. Platelet aggregation, inhibit thrombus formation.

Some anticoagulants include...

Aspirin (ASA), Clopidrogrel (plavix)

Some considerations before starting AC therapy?

Hx of bleeding, teach pt of inc. Bleeding and bruising, have blood monitored to check bleeding times (PT, aPTT, INR, CBC)

High o2 demand greater than o2 supply can lead to...

Myocardial ischemia

Clinical manifestation of angina is

Chest pain

The most common reason for angina to develop is

Atherosclerosis (70% or more blockage)

Chronic stable angina is...

Chest pain that occurs intermittently over a long period of time. Usually in similar pattern.

What can cause an episode of Chronic stable angina?

Exercise or emotional stress

What can relieve an episode of Chronic stable angina?

Rest or nitroglycerin

Some pt descriptions of Chronic stable angina are...

Pressure, heaviness, tight suffocating sensation, difficulty breathing, fatigue

Overall goal to treat Chronic stable angina?

Dec. O2 demand and/or inc. O2 supply

Shirt acting nitrates work by...

Dilate peripheral and coronary blood vessels

Shirt acting nitrate administration are by

Sublingual or spray

Short acting nitrates in an emergency steps are

Administer, no relief of pain call 911;if some relief repeat q5 mins for a max of 3 doses. *WE NEED COMPLETE RELIEF NOT SOME*

What could be included in pt teaching when giving shirt acting nitrates?

Headache is the most common side effect, can be take prophylactically before activity know to cause angina

Beta blockers work by...

Blocking receptors on heart by causing dec. HR and force of contraction.

Some beta blockers are...

Atenolol and metoprolol ( end in -lol)

Unstable angina....

Occurs at rest, pain last >/= 10 min, need immediate Tx

What are S/S of unstable angina

SOB, fatigue (most prominent), anxiety, indigestion

Some interventions for Angina are....

Upright position, supplemental o2, vitals, 12 lead ECG, a assess heart/lungs. Pt will most likely be anxious have cool, pale, clammy skin.

Peripheral Artery Disease (PAD) is

thickening of artery walls

What does PAD AND PVD affect

Blood flow to (PVD) and from (PAD) heart

PVD/PAD is a result of...

Atherosclerosis

Risk factors for PVD/PAD

Tobacco (most important) ,CKD, DM, HTN, females, age, hypercholesterolemia

Clinical manifestations of PAD/PVD include...

Burning, claudication (pain and/or cramping), numbness in feet.

PVD/PAD assessment findings include...

*appearance is most important regarding blood flow*


Dec. Cap refill, atrophy, redness, diminished or absent pedial, femoral, popliteal pulses.

Complications of PVD/PAD are

Atrophy of skin, delayed healing, infection, necrosis, arterial ulcers (occur over boney prominences on toes, legs, feet)

What helps promote vasodilation?

Warm environment (ex. Warm socks) avoid caffeine, cold, stress and nicotine, avoid crossing legs, elevation to reduce swelling.

What type of exercise is recommended?

Walking helps build circulation. Walk until pain, stop, rest, walk further

Angioplasty is

Insertion of catheter through femoral artery

Mechanical rotational abrasive artherectomy is

Scrap plaque from inside peripheral artery

Arterial revascularization surgery is

Rerouting circulation around a blockage, can cause potential limb loss

What are some nursing considerations for pts who've had therapeutic procedures?

Frequent vitals (q15min), observe site for bleeding, monitor VS, peripheral pulse, cap refill, movement and sesation. Bedrest and keep limb straight 2-6hrs

How can a nurse provide a pt with PVD/PAD conservative Tx?

Trauma protection, dec. Ischemic pain, preventing/control infection, improve perfusion.

Venous thromboembolism (VTE) risk factors are

Heart failure, immobility, post OP, pregnancy, oral contraceptives, active cancer

VTE expected findings are

Tenderness,sudden edema, warmth, calf/groin pain, can be asymptomatic

What is indicative that a embolism has gone to the lungs from VTE?

SOB and chest pain

What type of care can be offered to those with DVT and thrombophlebitis?

Encourage rest and elevation, warm compress, no massage, anti embolism stockings, IVC filter

What are some risk factors for venous insufficiency?

Sitting/standing in place for long time, obesity, preg, thrombophlebitis

Some of the expected findings in those who may have venous insufficiency are

Edema, stasis ulcers, brown discoloration.

Risk factors for varicose veins are

Female, 30yo older, fam Hx, obesity, preg, standing

Finding that may indicate varicose veins are...

Distended veins, muscle cramps/spasms, pruritus (itching)

Nursing care for venous insufficiency are

Evelvate legs 20 min 4-5× day., avoid restrictive clothes/crossing legs, wear compression sock after elevation and when swelling is minimal

Therapeutic procedures for venous insufficiency could be...

Sclerotherapy, vein stripping, laser Tx

What meds are used for DVT/thrombophlebitis?

Heparin, enaxoprin, warfarin

What med is used to prevent clot formation or enlargement?

IV heparin

What med uses potanin sulfate as it antidote?

Heparin

What to monitor when giving heparin

PTT, bleeding, platelet count

What med uses vitamin K as its antidote?

Warfarin

What labs are monitored when administering warfarin?

PT/INR

How long to reach warfarin therapeutic levels?

3-4 days

What therapy dissolves clots within 5 days of therapy?

Thrombolytic therapy