Respiratory flutter or diaphragmatic flutter is a rare disorder characterized by involuntary, high frequency contractions of the diaphragm. Only 7 cases are reported in infants till date. The present case presented with life threatening respiratory distress immediately after birth. In view of high respiratory rate of 120-154 per minute, clinical and fluoroscopic evidence of diaphragmatic contra...

Fetal atrial flutter (AF) is the second common fetal tachyarrhythmias that exist in less than 1% of all pregnancies. It may be related to congestive heart failure, hydrops, neurologic morbidity, or intrauterine death. Early detection and treatment are crucial for getting better neonatal outcomes. We presented a case of fetal atrial flutter diagnosed in the 36th week of gestation and managed suc...

Freeplay is one of the most important nonlinearities that affect the control surfaces of the aircraft; it can induce flutter phenomena and limit the performances of the same airplane. To investigate the effect of control surface freeplay, an aeroelastic wind tunnel model of a T-tail has been developed. A variable amplitude freeplay has been introduced in the control chain by a specifically desi...

A 25-year-old man with idopathic atrial flutter and high grade atrioventricular (AV) block is described. Postcardioversion, sino-atrial (SA) and AV nodal dysrhythmias occurred. Treadmill exercise during atrial flutter increased AV conduction to 2:1, and normalized SA and AV nodal function following cardioversion. A neurogenic basis for these arrhythmias is hypothesized.

Monkeys trained to distinguish touch stimuli that 'flutter' with different frequencies can similarly distinguish electrical stimulation of the somatosensory cortex according to its frequency; the implication is that the electrically-evoked patterns of cortical activity cause flutter sensations similar to those induced by touch.

To cite: Nam MCY, Best L, Greaves K, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2015214048 DESCRIPTION An 82-year-old man with previous bioprosthetic aortic valve replacement for aortic stenosis had a routine ECG (figure 1). This was thought to represent an atrial tachycardia with cycle length 280 ms and 3:1 atrioventricular response. A diagnosis of at...

An automated flutter boundary tracking procedure is presented for the efficient calculation of transonic flutter boundaries. The new procedure uses aeroelastic responses to march along the boundary by taking steps in speed and Mach number, thereby reducing the number of response calculations prevlously requi red to determi ne a transoni c fl utter boundary. The tracking procedure reduces comput...

The mechanism of atrial flutter is controversial. A 76-year-old woman with rheumatic heart disease was referred to our clinic with an unusual rhythm disturbance which initially appeared to be classic atrial flutter at a rate of 300 beats/min. Later tracings, however, demonstrated a rate exactly one-half that of the earlier ECGs, with an identical p-wave morphology and vector. This latter rhythm...

This paper develops a non-contact active feedback control of web flutter in a narrow passage by using movable plates set at inlet and outlet of the passage. The strategy of this active feedback control is based on the flow-control which cancels the exciting fluid force acting on the web, i.e., cancels the self-excited feedback mechanism. In this paper, suppression of the web flutter by the acti...