| flutter | <clinical sign> A rapid vibration or pulsation. (18 Nov 1997) |
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| flutter-fibrillation | Mixture of atrial flutter (FF) waves and fibrillation (ff) waves in the electrocardiogram. Synonym: fibrilloflutter, flutter-fibrillation. (05 Mar 2000) |
| flutter-fibrillation waves | The waves of atrial flutter usually best seen in ECG leads 2, 3, and AVF. (A small f indicates atrial fibrillation). Synonym: fibrillary waves, fibrillatory waves, flutter-fibrillation waves. (05 Mar 2000) |
| atrial flutter | <cardiology> A rapid well organised contraction of the atrium at a rate of 250-350 contractions per minute. Ventricular response rates are usually some multiple of 300. ECG shows sawtooth waves. Atrial flutter is considered a serious and potentially unstable rhythm. (27 Sep 1997) |
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| ventricular flutter | A form of rapid ventricular tachycardia in which the electrocardiographic complexes assume a regular undulating pattern without distinct QRS and T waves. (05 Mar 2000) |
| pure flutter | Consistent registration of atrial flutter waves unmixed with other signals. (05 Mar 2000) |
| diaphragmatic flutter | Rapid rhythmical contractions (average, 150 per minute) of the diaphragm, simulating atrial flutter clinically and sometimes electrocardiographically. (05 Mar 2000) |
| impure flutter | Mixture of atrial flutter (FF) waves and fibrillation (ff) waves in the electrocardiogram. Synonym: fibrilloflutter, flutter-fibrillation. (05 Mar 2000) |
| ocular flutter | A spontaneous, brief, intermittent, horizontal oscillation of the eyes occurring during fixation; it often coexists with ocular dysmetria in cerebellar syndromes. (05 Mar 2000) |