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flutter |
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flutter /flut·ter/ (flut´er) a rapid vibration or pulsation. atrial flutter cardiac arrhythmia in which the atrial contractions are rapid (250 to 350 per minute), but regular. diaphragmatic flutter peculiar wavelike fibrillations of the diaphragm of unknown cause. impure flutter atrial flutter in which the electrocardiogram shows alternating periods of atrial flutter and fibrillation or periods not clearly one or the other. mediastinal flutter abnormal motility of the mediastinum during respiration. pure flutter atrial f. ventricular flutter (VFI) a possible transition stage between ventricular tachycardia and ventricular fibrillation, the electrocardiogram showing rapid, uniform, regular oscillations, 250 or more per minute.
flutter, a rapid vibration or pulsation that may interfere with normal function. flutter, n a quick, irregular motion. flutter a rapid vibration or pulsation. atrial flutter cardiac arrhythmia in which the atrial contractions are rapid (200-320 per minute), but regular. diaphragmatic flutter peculiar wavelike fibrillations of the diaphragm of unknown cause. See also synchronous diaphragmatic flutter. impure flutter atrial flutter in which the atrial rhythm is irregular. mediastinal flutter abnormal mobility of the mediastinum during respiration. pure flutter atrial flutter in which the atrial rhythm is regular. flutter valve in an intravenous infusion apparatus, a floating bead in the fluid chamber that allows air to enter the system but prevents fluid from escaping. Its movement is often viewed as an indicator of the speed of fluid infusion, but it is inaccurate. ventricular flutter a possible transition stage between ventricular tachycardia and ventricular fibrillation, the electrocardiogram showing rapid, uniform, and virtually regular oscillations, 250 or more per minute. flutter Cardiology A family of cardiac tachyarrhythmias characterized by rapid regular atrial–250-350/min or ventricular–200/min rhythms. See Atrial flutter, Ventricular flutter. Cf Fibrillation.
Flutter types
Atrial flutter occurs at 200-350 beats/min (with a 2:1 block, so that the ventricle fires at ± 150 beats/min); AF results from a circus pathway, occurs in atrial dilatation, primary myocardial disease, or rheumatic heart disease and
responds poorly to antiarrhythmics
Ventricular flutter is characterized by a continuous and regular depolarization rate of greater than 200 beats/min, and demonstrates high-amplitude zigzag pattern on the EKG, without clear definition of the QRS and T waves, a pattern
that may revert spontaneously to a normal sinus rhythm or progress to ventricular fibrillation
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