Perfusion Flashcards
Resistance to left ventricular ejection; the work the heart must overcome to fully eject blood from the left ventricle
Afterload
Slower than normal heart rate; heart contracts fewer than 60 beats/min
Bradycardia
Volume of blood expelled by the ventricles of the heart, equal to the amount of blood ejected at each beat multiplied by the number of beats in the period of time used for computation (usually 1 minute)
Cardiac Output
Blood pressure at the instant of maximum cardiac relaxation; the pressure of the blood in the arteries when the heart is filling
Diastole
Pertaining to diastole of blood pressure
Diastolic blood pressure
Deviation from the normal pattern of the heartbeat
Dysrhythmia
Disorder characterized by an elevated blood pressure persistently exceeding 120/80 mmHg
Hypertension
Abnormal lowering of blood pressure that is inadequate for normal perfusion and oxygenation of tissues
Hypotension
Arterial blood oxygen level less than 60 mmHg; low oxygen level in the blood
Hypoxemia
Necrosis of a portion of muscle caused by an obstruction
Infarction
Decreased blood supply to a body part such as skin tissue or to an organ such as the heart
Ischemia
Abnormally low blood pressure occurring when a person stands
Orthostatic Hypotension
Amount of hemoglobin fully saturated with oxygen, given as a percent value
Oxygen Saturation
Abnormally low blood pressure occurring when an individual assumes the same standing posture; also called orthostatic hypotension
Postural Hypotension
Volume of blood in the ventricles at the end of diastole, immediately before ventricular contraction
Preload