Term
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Definition
| The abnormal conduction of the electrical impulse through the heart |
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Term
| Absolute Refractory Period |
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Definition
| The early phase of cardiac repolarization, wherein the heart muscle cannot be stimulated to depolarize. |
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Term
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Definition
| A chemical mediator of the parasympathetic nervous system |
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Definition
| Term used to describe any group of clinical symptoms consistent with acute myocardial ischemia |
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Term
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Definition
| A condition present when a period of cardiac ischemia caused by sudden narrowing or complete occulusion of the coronary artery leads to death of the myocardial tissue |
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Term
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Definition
| hormone produced by the adrenal gland with alpha and beta properties. |
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Term
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Definition
| The resistance against which the ventricles contract |
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Definition
| Pertaining to the period of dying |
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Term
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Definition
| A cardiac dysrhythmia seen just before the heart stops all togethor. (asystole) |
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Term
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Definition
| A sac or bulge resulting from the weakening of the wall of a blood vessel or ventricle. |
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Term
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Definition
| The sudden pain from myocardial ischemia caused by diminished circulation to cardiac tissue. |
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Definition
| The largest artery in the body, originating from the left ventricle |
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Term
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Definition
| The valve between the left ventricle and the aorta |
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Term
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Definition
| Disturbances in cardiac rhythm |
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Term
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Definition
| The muscular thick walled blood vessels that carry blood away from the heart. |
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Term
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Definition
| A small blood vessel that carries oxygenated blood into the capillaries |
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Term
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Definition
| A condition in which the walls of the arterys become thickened and inelastic |
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Term
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Definition
| An artificial product; in cardiology, is used to refer to noise or interference in an ECG tracing. |
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Term
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Definition
| The absence of ventricular contractions |
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Term
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Definition
| The addition to ventricular volume contributed by contraction of the atria. |
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Term
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Definition
| opposes the action of ACH on the Heart and elsewhere, allowing the bodys natural sympathetic system to speed up heart rate. |
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Term
| Atrioventricular (AV) node |
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Definition
| A specialized structure located in the AV junction that slows conduction through the AV junction |
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Term
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Definition
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Term
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Definition
| A common type of ateriosclerosis affecting the coronary and cerebral arteries |
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Term
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Definition
| A subdivision of the nervous system that controls primarily involuntary body functions. Made up of SNS and PNS |
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Term
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Definition
| The portion of the electric conduction system of the heart located in the upper part of the interventricular septum that conducts impulse to the bundle of His |
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Term
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Definition
| Spontaneous initiation of depolarizing electric impulses by pacemaker sites within the electric conduction system of the heart. |
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Term
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Definition
| An arrhythmia in which every other heartbeat is premature contraction. |
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Term
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Definition
| The pressure exerted by the pulsatile flow of blood against the arterial walls. |
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Term
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Definition
| A slow heart rate of less than 60BPM |
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Term
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Definition
| Abnormal whoosing sound caused by turbulent blood flow within a vessel |
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Term
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Definition
| A disturbance in electric conduction through the right or left bundle branch from the bundle of His |
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Term
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Definition
| The period from one cardiac contraction to the next. |
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Term
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Definition
| Amount of blood pumped by the heart per minute = SV times HR per minute |
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Term
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Definition
| The sudden and often unexpected cessation of adequate cardiac output. |
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Term
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Definition
| Fibrous strands shaped liked umbrella stays, that attach the free edges of the cuspsis of the AV valves to the papillary muscles. |
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Term
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Definition
| The effect on the rate of the contraction of the heart. |
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Term
| Circumflec Coronary Artery |
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Definition
| On of the 2 branches of teh left main coronary artery |
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Term
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Definition
| The mesh of arteries and capillaries that furnashes blood to a segment of tissue whose original arterial supply has been obstructed. |
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Term
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Definition
| The strength of heart muscle contractions |
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Term
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Definition
| A process caused by artherosclerosis that leads to narrowing and obstruction of the coronary arteries. |
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Term
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Definition
| A large vessel in the posterior part of the coronary sulcus into which the coronary veins empty. |
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Term
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Definition
| The groove along the exterior surface of the heart that seperates the atria from the ventricles |
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Term
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Definition
| 2 premature ventricular contractions occuring sequentially |
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Term
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Definition
| The slurring of the upstroke of the first part of the QRS complex that occurs in Wolf_Parkinson_White Syndrome |
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Term
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Definition
| The process of discharging resting cardiac muscle fibers by an electric impulse that causes them to contract. |
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Term
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Definition
| The period of ventricuar relaxation during which the ventricles passively fill with blood |
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Term
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Definition
| The drugs used in the treatment of CHF and certain Atrial Arrythmias |
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Term
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Definition
| The effect on the velocity of conduction |
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Term
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Definition
| The thin membrane lining on the inside of the heart |
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Term
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Definition
| The thin membrane lining on the outside of the heart. |
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Term
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Definition
| THe therapy that uses medications that act to dissolve blood clots. |
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Term
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Definition
| A partial disruption of the conduction of the depolarizing impulse from the atria to the ventricles causing prolonged p-r interval. |
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Term
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Definition
| The number of heart contractions per minute. |
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Term
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Definition
| An excessive amount of Potassium on the blood. |
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Term
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Definition
High Blood pressure
Usually an Diastolic pressure greater then 90 mmHg |
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Term
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Definition
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Term
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Definition
| Death or necrosiss of a localized area of tissure caused by the cutting off of tis blood supply |
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Term
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Definition
| Three pathways of the elctrical conduction system found in the Atria that transmits the impulse from the SA node to the AV node. |
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Term
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Definition
| A thick wall that seperates the right and left ventricles. |
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Term
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Definition
| Tissue anoxia from diminished blood flow to tissues usually caused by narrowing or occulusion of the artery. |
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Term
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Definition
| When refering to a wave the wave is neither positive or negative. |
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Term
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Definition
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Term
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Definition
| An arrythmia arising from ectopic foci in teh area of the AV junction. Often shows an absence of the P wave, short P-R interval or a P Wave aftert the QRS |
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Term
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Definition
| The ECG leads attached to the limbs that form the Hexaxial system. Dividing the Heart into the interior and posterior segments. |
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Term
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Definition
| The valve located between the left atrium and the left ventricle of the heart. |
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Term
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Definition
| Having one common shape of QRS complex |
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Term
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Definition
| Arising from or pertaining to many foci or locations. |
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Term
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Definition
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Term
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Definition
| The death of tissue caused by the cessation of its blood supply |
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Term
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Definition
| Nerotransmitter and drug used in the treament of shock. Produces vasoconstriction through its alpha stimulator properties. |
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Term
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Definition
| The normal rhythm of the heart where the excitation impulses arises in the SA node travels through the internodal pathways to the atrioventricular junction down the bundle of HIS etc. etc... |
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Term
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Definition
| Severe Dyspnea experienced while lying down and relieved when sitting up. |
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Term
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Definition
| First wave of the ECG complex representing depolarization of the Atria |
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Term
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Definition
| Initiates excitation impulses |
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Term
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Definition
| A sensation felt in the heart caused by a PVC. "Skipping a Beat" |
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Term
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Definition
| Protrusions of the Myocardium into the ventricular cavities to which the Chordae Tendinae are attached. |
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Term
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Definition
| The double layered sac containing the heart |
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