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EKG Vocab

AC Interference Unwanted markings on the EKG caused by other electrical current sources (AC= alternating current)
Ambulate To walk.
Agrina Pain around the heart radiating to the arm, caused by lack of oxygen to the heart muscle.
Angiogram An invasive procedure during which x-rays are taken of a blood vessel after an injection of a radiopaque substance.
Angle of Louis A ridge about an inch or sobelow the suprasternal notch where the main part of the sternun, known as the manubrium, attach.
Anterior Axillary Line An imaginary vertical line starting at the edge of the chest where the armpit begins.
Anti-Arrhythmic Type of medication given to prevent arrythmias.
Aorta The largest artery that transports blood from the left ventricle of the heart to the entire body.
Aortic Semilunar Valve Valve located in the aorta that prevents backflow of blood into the left ventricle.
Apnea The absence of breathing.
Arrythmia Abnormal or absence of normal heartbeat, also known as Dysrhythmia.
Artifact Unwanted marking on the EKG tracing caused by activity other than the heart's electical activity.
Asystole When no rhythm or electrical current is traveling through the cardiac conduction system
Atrial Kick The blood ejected into the ventricles by the atria immediatly prior to ventricular systole.
Atrioventricular (AV Node) Specialized cells that delay the electrical conduction through the heart and allow the atria time to contract.
Atrium One of the upper two small chambers of the heart. The right atrium recieves blood through the vena cava and the left atrium recieves blood from the lungs through the pulmonary vein.
Augmented Normally small EKG lead tracings that are increased in size by the EKG machine in order to be interprated.
Automaticity The ability of the heart to initiate an electrical impulse without being stimulated by another source.
Beta Blockers Drugs used to treat hypertension.
Bigeminy Pattern where every other complex is a premature beat.
Biphasic The waveform has an equally positive (upward) and negative(downward) deflection on the EKG paper.
Bipolar A type of EKG lead that measures the flow of electrical current in two directions at the same time.
Blocked or Non-Conducted Impulse occurs too early after preceding impulse causing a period when no other impused can occur in the ventrilcles.
Bradycardia A slow heart rate, usually less than 60 beats a min.
Bundle of Branches Left and right branches of the Bundle of His that conduct impulses down either side of the interventricular septum to the left and right ventricles.
Bundle of His (AV Bundles) A bundle of fiber that originate in the AV node and enter the interventricular septum conducting electrical impulses to the left and right bundle branches.
Capture The ability of the heart muscle to respond to electrical stimulation and depolarize the myocardial tissue.
Cardiac Cycle The period between the beginning of one beat of the heart to the next. The cardiac cycle includes systole and diastole.
Cardiac Output Parameters Observation guidelines used to access the blood supply to the vital organs of the body to maintain normal function.
Cardiologist A physician who specializes in the study of the heart.
Cardiovascular Related to the heart and blood vessels.
Code Blue Term used for en emergency when a person goes into cardiac(or respiratory)arrest in a hospital or medical car facility.
Complex A group of EKG waveform deflections which indicate electrical activity in the heart.
Complexes Atrial or ventricular contractions as they appear on the EKG.
Conductivity The ability of the heart cells to recieve and transmit an electrical impulse.
Congestive Heart Failure Failure of the heart to pump an adequate amount of blood to the body tissue.
Contractility The ability of the heart muscle cells to shorten in response to electrical simulus.
Coronary Artery Disease Narrowing of the arteries surrounding the heart causing a reduction in blood flow to the heart.
Coronary Circulation The circulation of blood to and from the heart muscle.
Defibrillator A machine that produces and sends an electrical shock to the heart, which is intended to correst the hearts electrical pattern.
Deoxygenated Blood Blood that has little or no oxygen.
Depolarization The electrical activation of cells of the heart that initiates contraction of the heart muscle.
Dextrocardia A congenital defect where the left ventricle, left atrium, aortic arch, and stomach are located on the right side of the chest.
Diabetes Mellitus (DM) A conduction characterized by a lack of production of insulin resulting in elevated gluscose in the blood stream.
Diastole The phase of the cardiac cycle when the heart is expanding and refilling
Echocardiogram Noninvasive diagnostic test that uses sound to study the heart and blood vessels; also known as an ultrasound.
Einthoven Triangle A triangle fromed by three limb electrodes- left arm, right arm, and left leg.
Electrocardiogram A tracing of the hearts electrical activity recorded on an electrocardiograph.
Electrocardiograph An instrument used to record the electrical activity of the heart.
Electrocardiology The study of the hearts electrical activity.
Electrodes Small sensors, metal plates, or disposable units placed on the skin during an EKG to recieve the electrical activity of the heart.
Created by: angel4193