Term
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Definition
| Resistance to the ventricular ejection of blood. |
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Term
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Definition
| Abnormal rhythms or dysrhythmias. |
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Term
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Definition
| Volume of blood ejected from the left ventricle each minute. |
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Term
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Definition
| Enlargement of the heart by hypertrophy of its walls. |
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Term
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Definition
| Ability of the lungs and chest wall to expand during inspiration and recoil with expiration; amount of distention or expansion the ventricles can achieve to increase stroke volume. |
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Term
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Definition
| The ability of the heart muscle fibers to contract forcefully. |
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Term
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Definition
| Blood with a lower than normal oxygen level resulting when a heart defect causes oxygenated and unoxygenated blood to mix. |
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Term
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Definition
| Process of giving a higher than normal dose of digoxin initially to speed response to the drug and achieve therapeutic blood levels faster. |
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Term
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Definition
| The fetal vascular channel between the pulmonary artery and the descending aorta. |
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Term
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Definition
| The fetal vascular channel between the umbilical vein and the inferior vena cava. |
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Term
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Definition
| Fetal growth centers for mitral and tricuspid valves and the atrial and ventricular septum. |
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Term
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Definition
| The opening between the right and left atria in the fetal heart. |
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Term
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Definition
| A third heart sound that produces a rhythm like the gait of a horse. |
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Term
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Definition
| Pressures generated by blood and passage of blood through the heart and pulmonary system. |
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Term
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Definition
| Heart murmur heard during the entire phase of systole. |
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Term
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Definition
| An abrupt decrease in systemic vascular resistance and pulmonary blood flow triggered by activity that occurs in children with heart defects with decreased pulmonary blood flow. |
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Term
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Definition
| Underdeveloped organ or tissue. |
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Term
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Definition
| Lower than normal amounts of oxygen in the blood. |
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Term
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Definition
| Agents that improve the velocity of heart contractility. |
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Term
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Definition
| The amount of oxygen that can potentially be delivered to the tissues. |
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Term
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Definition
| Surgical procedure that does not create normal anatomical or hemodynamic results that are used for children with a potentially fatal or lethal condition. Examples include shunts that are life saving, pulmonary artery banding, and final surgeries that do not produce normal blood flow, such as the Fontan procedure. |
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Term
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Definition
| Above normal increase in the number of red cells in the blood to increase the amount of hemoglobin available to carry oxygen. |
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Term
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Definition
| Volume of blood in the ventricle at the end of diastole that stretches the heart muscle before contraction. |
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Term
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Definition
| The use of radio energy to destroy a very small section of the myocardium through which an accessory conduction pathway passes. |
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Term
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Definition
| An acute, complex state of circulatory dysfunction resulting in failure to deliver sufficient oxygen and other nutrients to meet cell and tissue demands. It can be caused by a variety of conditions such as hemorrhage, dehydration, sepsis, obstruction of blood flow, and cardiac pump failure. |
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Term
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Definition
| Movement of blood between the systemic and pulmonary circulation through an abnormal anatomic or surgically created opening. Left to right shunting is systemic to pulmonary circulation, and right to left shunting is pulmonary to systemic circulation. |
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Term
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Definition
| Narrowing of a valve or below the valve, or in the blood vessel. |
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Term
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Definition
| The amount of blood ejected with each contraction. |
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Term
| synchronized cardioversion |
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Definition
| The timed administration of a calibrated electrical charge by a defibrillator in an effort to convert the arrhythmia to a sinus rhythm. |
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Term
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Definition
| Transient loss of consciousness and muscle tone. |
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Term
| systemic vascular resistance |
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Definition
| The force or resistance of the blood in the body's blood vessels that helps return blood to the heart. |
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Term
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Definition
| A distinct form of ventricular tachycardia in patients with marked QT prolongation on the ECG, appearing as "twisting of the points." |
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Term
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Definition
| A forced expiratory effort against a closed airway (e.g., holding the breath and bearing down as if to have a bowel movement, inducing the gag reflex, or blowing forcefully on the thumb), which increases intrathoracic and venous pressures and thus slows the heart rate. |
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Term
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Definition
| Dilating a stenotic pulmonic or aortic valve. |
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