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148 Cards in this Set

  • Front
  • Back

Afterload

The amount of resistance to ejection of blood from the ventricle

Apical Impulse

Impulse normally palpated at the 5th intercostal space, left mid-clavicular line; caused by contraction of the left ventricle.

Acute Coronary Syndrome

Refers to rupture of an atheromatous plaque in a diseased coronary artery, which rapidly forms an obstructive thrombus.

AV Node

Secondary pacemaker of the heart, located in the right atrial wall near the tricuspid valve

Baroreceptors

Nerve fibers located in the aortic arch and carotid arteries that are responsible for reflex control of the blood pressure

Cardiac Catheterization

An invasive procedure used to measure cardiac chamber pressures and assess latency of the coronary arteries

Cardiac Conduction System

Generated and transmits electrical impulses that stimulate contraction of the myocardium.

Cardiac Output

Amount of blood pumped by each ventricle in liters per minute

Cardiac Stress Test

A test used to evaluate the functioning of the heart during a period of increased oxygen demand

Contractility

Ability of the cardiac muscle to shorten in response to electrical impulse


Depolorization

Electrical activation of a cell caused by the influx of sodium into the cell while potassium exits the cell

Diastole

Period of ventricular relaxation resulting in ventricular filling

Ejection Fraction

Percentage of the end-diastolic blood volume ejected from the ventricle with each heartbeat

Hypertension

BP that is persistently greater than 140/90

Hypotension

A decrease in BP to less than 100/60 that compromises systemic perfusion

Murmers

Sounds created by abnormal, turbulent flow of blood in the heart

Myocardial Ischemia

Condition in which heart muscle cells receive less oxygen than needed

Myocardium

Muscle layer of the heart responsible for the pumping action of the heart

Opening snaps

Abnormal diastolic sound generated during opening of a rigid AV valve leaflet

Orthostatic Hypotension

A significant drop in BP after an upright posture is assumed

Preload

Degree of stretch of the cardiac muscle fibers at the end of diastole.

Pulmonary Vascular Resistence

Resistance to right ventricular ejection of blood

Repolarization

Return of the cell to resting state, caused by reentry of potassium into the cell while sodium exits the cell

S1

1st heart sound produced by closure of the atrioventricular valves

S2

2nd heart sounds produced by closure of the semilunar valves

SA Node

Primary pacemaker of the heart, located in the right atrium

Stroke Volume

Amount of blood ejected from the ventricle per heartbeat

Systemic Vascular Resistance

Resistance to left ventricle ejection

Systole

Period of ventricular contraction resulting in ejection of blood from the ventricles into the pulmonary artery and aorta

Telemetry

The process of continuous electrocardiographic monitoring by the transmission of radio waves from a battery-operated transmitter worn by the patient

Systolic click

Abnormal systolic sounds created by the opening of a calcified aortic or pulmonic valve during ventricular contraction

Common S&S of CVD

Chest pain, SOB, Edema, Weight gain, Abdominal distention, palpitations, Vital fatigue, dizziness, syncope, changes in LOC

Pallor

Caused by lack of oxyhemoglobin, it is a result of anemia or decreased arterial perfusion

Peripheral cyanosis

Suggests decreased blood flow to a particular area (nails, skin of nose, lips, earlobes, extremities)

Central cyanosis

Suggests serious cardiac disorders in which venous bloods passed through the pulmonary circulation without being oxygenated (tongue, buccal mucosa)

Ecchymosis

Bruise-may indicate prolonged clotting time, reduced platelet function

Cool/cold and moist skin

Cardiogenic shock causes vasoconstriction and skin becomes cool and clammy

Pulse pressure

Difference between systolic and diastolic pressures (Usually 30-40 mmHg)

Decreased pulse pressure

Reflects reduced stroke volume and ejection velocity or obstruction to blood flow during systole

JVP (Jugular Vein Pulsations)

Indicates an abnormal increase in the volume of the venous system. (Right ventricular failure, pulmonary HTN, pulmonary stenosis)

Erb's point

3rd intercostal space to the left of the sternum

Aortic area

2nd intercostal space to the right of the sternum

Pulmonic area

2nd intercostal space to the left of the sternum

S3

Occurs early in diastole during the period of rapid ventricular filling

S4

Occurs late in diastole-generated during atrial contraction as blood forcefully enters a noncompliant ventricle

LDL's

<160 mg/dL


Primary transporters of cholesterol and triglycerides into the cell (LETHAL)

HDL's

35-70 mg/dL-Men


35-85 mg/dL-Women


Transport cholesterol away from the tissue and cells of the arterial wall to the liver for excretion

Triglycerides

100-200 mg/dL

Brain Natriuretic Peptide

Neurohormone that helps regulate BP and fluid volume


>100 pg/mL is suggestive of HF

ECG

Graphic representation of the electrical currents of the heart


12, 15, 18-Leads

Potassium

3.5-5.0 mEq/L

Sodium

135-145 mEq/L

Calcium

8.6-10.2 mg/dL


Magnesium

1.3-2.3 mEq/L


Low Mg predispose patients to atrial and ventricular tachycardias

BUN

10-20 mg/dL


Reduced renal perfusion and decreased cardiac output

Creatinine

0.7-1.4 mg/dL


Renal impairment

INR

1.0 (2-3 therapeutic level)


Monitor effectiveness of Warfarin

Prothrombin Time

9.5-12 seconds


Monitors level of anticoagulation with Warfarin

Hematocrit

35-47%-Women


42-52%- Men


Percentage of RBC in 100 mL of whole blood

Hgb

12-16 g/dL- Women


13-18 g/dL- Men


Transports oxygen to the cells

Stress test helps determine....(6 things)

1.CAD


2.cause of chest pain


3.functional capacity after MI or heart surgery


4. effectiveness of antianginal/antiarrhythmic medications


5.dysrhythmias that occur during physical activity


6.specific goals for a physical fitness program

MAP

=[(2 x diastolic)] + systolic] / 3

Ablation

Purposeful destruction of heart muscle cells, usually in an attempt to control a dysrhythmia

Antiarrhythmic medication

Medication the suppresses or prevents a dysrhythmia.

Automaticity

Ability of the cardiac cells to initiate an electrical impulse

Cardioversion

Electrical current administered in synchrony with the patients own QRS complex to stop a dysrhythmia

Conduction

Transmission of electrical impulses from one cell to another

Defibrillation

Electrical curren administered to stop a dysrhythmia, not synchronized with the patients QRS

Depolarization

Process by which cardiac muscle cells change from a more negatively charged to a more positively charged intracellular state

Dromotropy

Conduction velocity

Inhibited

In reference to pacemakers, term used to describe the pacemaker withholding and impulse

Inotropy

Force of myocardial contraction

P wave

The part of an ECG that reflects conduction of an electrical impulse through the atrium; atrial depolarization

Paroxysmal Dysrhythmia

Sudden onset and/or termination and is usually of short duration

PR Interval

Reflects conduction of an electrical impulse from the sinoatrial node through the atrioventricular node

QRS complex

Reflects the conduction of an electrical impulse through the ventricles; ventricular depolarization

QT Interval

Reflects the time from ventricular depolarization through repolarization

Repolarization

Process by which cardiac muscle cells return to a more negatively charged intracellular condition, their resting state

Sensitivity

The level that the intracardiac electrical activity must exceed in order to be sensed by a pacemaker

Sinus Rhythm

Electrical activity of the heart initiated by the SA node

ST segment

Reflects the end of the QRS complex to the beginning of the T wave

Supraventricular Tachycardia

A Rhythm that originates in the conduction system above the ventricles

T wave

Reflects depolarizations of the ventricles

TP Interval

Reflects the time between the end of the T wave and beginning of the next P wave

Triggered

In reference to pacemakers, describes the release of an impulse in response to some stimulus

Ventricular Tachycardia

A Rhythm that originates in the ventricles

Acute coronary syndrome (ACS)

signs and symptoms that indicate unstable angina or acute myocardial infarction

Angina pectoris

Chest pain brought about by myocardial ischemia

Atheroma

fibrous cap composed of smooth muscle cells that forms over lipid deposits within arterial vessels and protrudes into the lumen of the vessel, narrowing the lumen and obstructing blood flow; also called plaque

Atherosclerosis

Abnormal accumulation of lipid deposits and fibrous tissue within arterial walls and the lumen

Contractility

Ability of the cardiac muscle to shorten in response to an electrical impulse

Coronary artery bypass graft (CABG)

A surgical procedure in which a blood vessel from another part of the body is grafted onto the occluded coronary artery below the occlusion in such a way that blood flow bypasses the blockage

Creatine kinase (CK)

An enzyme found in human tissues; one of the three types of CK is specific to heart muscle and may be used as an indicator of heart muscle injury


HDL

A protein-bound lipid that transports cholesterol to the liver for excretion in the bile; composed of a higher proportion of protein to lipid than LDL; exerts beneficial effect on the arterial wall

Ischemia

Insufficient tissue oxygenation

LDL

A protein-bound lipid that transports cholesterol to tissues in the body; composed of a lower proportion of protein to lipid than HDL; exerts a harmful effect on the arterial wall

Metabolic Syndrome

A cluster of metabolic abnormalities including insulin resistance, obesity, dyslipidemia, and hypertension that increase the risk of cardiovascular disease

Myocardial infarction

Death of heart tissue caused by lack of oxygenated blood flow

Percutaneous Coronary Intervention (PCI)

An invasive procedure in which a catheter is placed in a coronary artery, and one of several methods is employed to remove or reduce a blockage within the artery

Percutaneous Transluminal Coronary Angioplasty (PTCA)

A type of percutaneous coronary intervention in which a balloon is inflated within a coronary artery to break an atheroma and open the vessel lumen, improving coronary artery blood flow

Stent

A woven mesh that provides structural support to a coronary vessel, preventing its closure

Sudden cardiac death

Abrupt cessation of effective heart activity

Thrombolytic

An agent or process that breaks down blood clots

Troponin

Myocardial protein; measurement is used to assess heart muscle injury.

Allograft

Heart valve replacement made from a human heart valve

Annuloplasty

Repair of a cardiac valve's outer ring

Autograft

Heart valve replacement made from the patients own heart valve

Cardiomyopathy

Disease of the heart muscle

Chordae Tendineae

Nondistensible fibrous strands connecting papillary muscles to atrioventricular (mitral, tricuspid) valve leaflets

Chordoplasty

Repair of the chord tendineae

Commissurotomy

Splitting or separating fused cardiac valve leaflets

Heterograft

Heart valve replacement made of tissue from an animal heart valve

Homograft

Heart valve replacement made from a human heart valve

Leaflet repair

Repair of a cardiac valve's moveable flaps

mitral valve

atrioventricular valve located between the left atrium and left ventricle

Orthotopic transplantation

The recipient's heart is removed and a donor heart is grafted into the same site; the patient has one heart

Prolapse (of a valve)

Stretching of an atrioventricular heart valve leaflet into the atrium during systole

Pulmonic Valve

Semilunar valve located between the right ventricle and the pulmonary artery

Regurgitation

Backward flow of blood through a heart valve

Stenosis

Narrowing or obstruction of a cardiac valve's orifice

Total artifical heart

Mechanical divide used to aid a failing heart, assisting the right and left ventricles

Tricuspid valve

Atrioventricular valve located between the right atrium and right ventricle

Valve replacement

insertion of a device at the site of a malfunctioning heart valve to restore blood flow in one direction through the heart

Valvuloplasty

Repair of a stenosed or regurgitant cardiac valve by commissurotomy, annuloplasty, leaflet repair, or chordoplasty

Ventricular Assist Device

Mechanical device used to aid a failing right or left ventricle

Xenograft

Heart valve replacement made of tissue from an animal heart valve

Acute decompensated heart failure

Acute exacerbation of heart failure, with signs and symptoms resulting in markedly lower systemic perfusion

Anuria

Urine output of less than 50 mL/24 hr

Ascites

An accumulation of serous fluid in the peritoneal cavity

Cardiac resynchronization therapy (CRT)

A treatment for heart failure in which a divide paces both ventricles to synchronize contractions

Compliance

The elasticity or amount of "give" when blood enters the ventricle

Congestive Heart Failure

A fluid overload condition associated with heart failure

Contractility

The force of ventricular contraction; related to the number and state of myocardial cells

Diastolic Heart Failure

The inability of the heart to pump sufficiently because of an alteration in the ability of the heart to fill.

Ejection Fraction

% of blood volume in the ventricles at the end of diastole that is ejected during systole; a measurement of contractility

Heart Failure

The inability of the heart to pump sufficient blood to meet the needs of the tissues for oxygen and nutrients

Left-sided heart failure

Inability of the left ventricle to fill or pump sufficient blood to meet the needs of the tissues for oxygen and nutrients; traditional term to describe patient's symptoms of heart failure

Oliguria

Diminished urine output; less than 500 mL/24 hr

Orthopnea

Shortness of breath when laying flat

Paroxysmal norcturnal dyspnea

Shortness of breath that occurs suddenly during sleep

Pericardiocentesis

Procedure that involves aspiration of fluid from the pericardial sac

Pericardiotomy

Surgically created opening of the pericardium

Pulmonary Edema

Abnormal accumulation of fluid in the interstitial spaces and alveoli of the lungs

Pulseless electrical activity (PEA)

Condition in which electrical activity is present but there is not an adequate pulse or blood pressure

Pulsus Paradoxus

Systolic blood pressure that is more than 10 mmHG higher during exhalation than during inspiration; difference is normally less than 10 mmHg

Right sided Heart Failure

Inability of the right ventricle to fill or pump empty sufficient blood to the pulmonary circulation

Stroke volume

Amount of blood pumped out of the ventricle with each contraction

Systolic Heart Failure

Inability of the heart to pump sufficiently because of an alteration in the ability of the heart to contract