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Topic: Flutter


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In the News (Tue 18 Jun 19)

  
  Atrial flutter - Wikipedia, the free encyclopedia
Atrial flutter is a rhythmic, fast rhythm that occurs in the atria of the heart.
Atrial flutter is typically not a stable rhythm, and frequently degenerates to atrial fibrillation.
While entrainment may break atrial flutter and cause the individual to revert to a normal sinus rhythm, the rapid atrial pacing may cause the individual to go into atrial fibrillation.
en.wikipedia.org /wiki/Atrial_flutter   (1301 words)

  
 Atrial flutter -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-11-07)
Atrial flutter is a rhythmic, fast rhythm that occurs in the (Click link for more info and facts about atria) atria of the (The hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions pump blood through the body) heart.
Atrial flutter is typically not a stable rhythm, and frequently degenerates to (Fibrillation of the muscles of the atria of the heart) atrial fibrillation.
While entrainment may break atrial flutter and cause the individual to revert to a normal sinus rhythm, the rapid atrial pacing may cause the individual to go into (Fibrillation of the muscles of the atria of the heart) atrial fibrillation.
www.absoluteastronomy.com /encyclopedia/a/at/atrial_flutter.htm   (1368 words)

  
 atrial flutter   (Site not responding. Last check: 2007-11-07)
Atrial flutter is a very rapid, regular heart beat that starts in the atria, or upper chambers of the heart.
In a person with atrial flutter, the regular beating of the atria is replaced by a rapid beating, known as atrial flutter.
Atrial flutter is caused by a short circuit in one atrium.
www.northmemorial.com /healthencyclopedia/content/13.asp   (711 words)

  
 Forward-Swept Fan Flutter Calculated Using TURBO Code
Flutter, a self-excited dynamic instability arising because of fluid structure interaction, can be a significant design problem for rotor blades in gas turbines.
The flutter point was then calculated as the mass flow point where the aerodynamic damping value went to zero.
We also found that for operating conditions where flutter was dictated by the presence of a shock wave, an inviscid analysis gave results qualitatively similar to viscous analysis.
www.lerc.nasa.gov /WWW/RT2002/5000/5930srivastava1.html   (534 words)

  
 U-M CVC - Atrial Flutter   (Site not responding. Last check: 2007-11-07)
Atrial flutter is an abnormal, rapid heart rhythm that comes from the heart’s upper chambers — the atria — causing them to beat at rates of 220 to 300 times a minute.
Atrial flutter is uncommon in the young except when there is a history of heart surgery involving the atria.
Atrial flutter occurs when an electrical impulse travels in a circle around the atria like "a dog chasing its own tail." This happens when there are areas of slow and fast conduction in the atria, which is quite common after having surgery in this area.
www.med.umich.edu /cvc/mchc/paratrfl.htm   (1477 words)

  
 Atrial fibrillation/flutter Encyclopedia Search - Drug Price Search
In atrial fibrillation and flutter, the atria are stimulated to contract very quickly and differently from the normal activity originating from the sinoatrial node.
For most patients with atrial flutter, radiofrequency ablation is the current treatment of choice.
Some patients with atrial fibrillation and rapid heart rates may need the radiofrequency ablation done not on the atria, but directly on the AV junction (i.e., the area that normally filters the impulses coming from the atria before they proceed to the ventricles).
drug-price-search.com /encyclopedia/?encyclopedia_name_url=219&level=2   (795 words)

  
 Atrial Flutter
The most common form of atrial flutter is attributable to a large reentrant loop confined to the right atrium that travels in a counterclockwise direction, caudiocrandially in the interatrial sptum and craniocaudally in the right free atrial wall.
This common form of atrial flutter is characterized electrocardiographically by sawtoothed flutter waves that are negative in leads 11, 111, and aVF and show continual electrical activity (lack of an isoelectric interval between flutter waves, see figure 5a).
In this type of atrial flutter, an area of slow conduction is present in the posterolateral to posteromedial inferior right atrium between the tricuspid valve annulus and the inferior vena cava orifice (figure 11f).
www.rjmatthewsmd.com /Definitions/atrial_flutter.htm   (565 words)

  
 [No title]
Flutter wings grow very light once they have exhausted their Utter Flutter, and this is a danger to the survival of the Flutter Ponies.
Flutter Valley has more vines and branches than any other place in the pony realm, and she is so scatter brained and absent minded that she rarely realizes she is about to go "THUD!" into a very large (and soon to be very angry) Flutter Tree.
She is the most bold and tempermental of the flutter ponies, a species renown for its fierce pricavy and delicate shyness.
www.angelfire.com /80s/babygoldenautumn/fluttervalley.html   (1444 words)

  
 Atrial Fibrillation Foundation
Atrial flutter can sometimes degenerate to atrial fibrillation and sometimes atrial fibrillation will organize back into atrial flutter and at times even one atrium may be in an organized rhythm and the other atrium may be in a disorganized rhythm.
This is an electrocardiogram of a patient in atrial flutter.
The flutter waves are indicated with the dark arrows.
www.affacts.org /Questions/flutter.html   (298 words)

  
 Flutter in the Sky
It had no wings to flutter, only tail-fin stabilizers, and although Churchill was speaking metaphorically, he referred unknowingly to a major obstacle that confronted the German technologists.
Flutter as a phenomenon of flight engineering means a vibration that can amplify into structural damage.
As recently as September 1997, wing flutter — partly the result of faulty structural maintenance — caused an F-117A Nighthawk, the first operational "stealth" plane, to lose most of one wing and crash at an air show.
www.psc.edu /science/2001/farhat/flutter_in_the_sky.html   (1576 words)

  
 Influence of Shock Wave on the Flutter Behavior of Fan Blades Investigated
Flutter is a self-excited dynamic instability arising because of fluid-structure interaction, which causes the energy from the surrounding fluid to be extracted by the vibrating structure.
An in-flight occurrence of flutter could be catastrophic and is a significant design issue for rotor blades in gas turbines.
The flutter point can then be calculated by extrapolating the performance characteristics at which the aerodynamic damping goes to zero.
www.lerc.nasa.gov /WWW/RT2002/5000/5930srivastava2.html   (565 words)

  
 Atrial fibrillation and flutter
Atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles, or lower chambers of the heart.
Atrial flutter is less common, but both of these arrhythmias can cause a blood clot to form in the heart.
Patients with atrial fibrillation and flutter can live a normal life for many years as long as the arrhythmia is controlled and serious blood clots are prevented.
www.lifesteps.com /gm/Atoz/ency/atrial_fibrillation_and_flutter.jsp   (1537 words)

  
 CD Baby: FLUTTER: Toys in Coin Machines - from jettblack
Flutter is "girlish in that manner of someone you can't help being attracted to."1 This Chicago-based project is led by vocalist/writer Christine Ingaldson with rotating collaborators and performers.
Flutter's first incarnation, a solo-produced and written blend of experimental, darkwave-based music resulted in "Molting," which was independently released by Christine Ingaldson in spring of 2001.
Flutter is keeping busy with a new music video for "Sleepwalking," a new track for a Bowie compilation, as well as the third album.
www.cdbaby.com /cd/flutter/from/jettblack   (908 words)

  
 HPC - Flutter in the sky   (Site not responding. Last check: 2007-11-07)
Panel flutter may have affected the outcome of WW II, but sophisticated computational simulation technologies on terascale class systems are now becoming a valuable tool in assessing the "flutter envelope" for high-performance aircraft.
As recently as September 1997, wing flutter -- partly the result of faulty structural maintenance -- caused an F-117A Nighthawk, the first operational "stealth" plane, to lose most of one wing and crash at an air show.
"Flutter can be catastrophic and must be avoided at all costs," says Farhat, who directs the University of Colorado's Center for Aerospace Structures, an interdisciplinary center focusing on aircraft structural technology.
www.hp.com /techservers/news/news_hpc_61028.html   (1519 words)

  
 ELECTROPHYSIOLOGY: Treatment of atrial flutter -- Waldo 84 (2): 227 -- Heart
After atrial fibrillation, atrial flutter is the most important and most common atrial tachyarrhythmia.
flutter, uncommon atrial flutter, and rare atrial flutter.
Importance of the atrial flutter isthmus in post-operative intra-atrial reentrant tachycardia.
heart.bmjjournals.com /cgi/content/full/84/2/227   (3772 words)

  
 MedlinePlus Medical Encyclopedia: Atrial fibrillation/flutter
Underlying causes of atrial fibrillation and flutter include dysfunction of the sinus node (the "natural pacemaker" of the heart) and a number of heart and lung disorders, including coronary artery disease, rheumatic heart disease, mitral valve disorders, pericarditis, and others.
Some cases of atrial fibrillation or flutter occur in the setting of a heart attack or soon after surgery on the heart.
An ECG shows atrial fibrillation or atrial flutter.
www.nlm.nih.gov /medlineplus/ency/article/000184.htm   (886 words)

  
 J & M Abrasive - Flutter wheels   (Site not responding. Last check: 2007-11-07)
The 1" x 4" Flutter Wheel consists of 32 Flutter sheets with 4 spacers fully assembled with sheets alternated back-to-back.
These flutter wheels work best on a hi-speed drill or drill press with speeds of 3,000 to 5,000 RPM maximum.
These flutter wheels work best on a hi-speed drill or drill press with speeds of 2,000 to 3,500 RPM maximum.
www.jmabrasives.ca /fw.html   (205 words)

  
 eMedicine - Atrial Flutter : Article by Alan D Clark, MD   (Site not responding. Last check: 2007-11-07)
Atrial flutter can conduct to the ventricle in a 1:1 fashion, producing a ventricular rate of 300 beats per minute in children, in patients with the pre-excitation syndrome, in those whose AV nodes conduct rapidly, and occasionally in patients with hyperthyroidism.
The issue of stroke risk and anticoagulation in patients with atrial flutter is controversial; however, Seidl et al recently studied 191 consecutive patients admitted to the hospital with atrial flutter and found that the risk of thromboembolism may be higher than previously thought.
Rarely, AF or atrial flutter may be due to pericardial disease or effusion or carbon monoxide intoxication.
www.emedicine.com /emerg/topic47.htm   (4066 words)

  
 Flying-Vol 10 No. 4 Pg 14 : Flies Like it Does - Flutter
The rudder had about an inch of play and it had minor flutter, not the violent buzz, but a slow wiggle back and forth.
Flutter occurs at high speed, so if you have a slow plane, you probably won't get flutter.
I can say that I have gotten flutter and cured it (boy, that sounds like a disease) and here are my prevention and cures.
www.fly-imaa.org /imaa/hfarticles/flying/v10-4-14.html   (689 words)

  
 The Physician and Sportsmedicine: Atrial Flutter in a College Football Player
Atrial flutter is an uncommon supraventricular tachyarrhythmia with an unknown cause.
Therefore, if the duration of flutter exceeds 48 hours, anticoagulation with warfarin sodium for 3 to 4 weeks is indicated before cardioversion, followed by continued anticoagulation.
Atrial flutter is generally not lethal in the absence of structural cardiac disease or preexcitation syndrome.
www.physsportsmed.com /issues/2003/1003/wen.htm   (1833 words)

  
 Airway Clearance Through the Flutter: New Hope
Now the Flutter, a new chest physiotherapy device recently granted market clearance by the Food and Drug Administration, seems to hold promise as an easier and more effective means of accomplishing this vital therapy.
The Flutter was invented by a Swiss physiotherapist, Patrick Althaus, as a method for loosening mucus in the airways; CF patients in other countries have been using the Flutter since mid-1989.
The patient breathes through the Flutter against resistance, which is generated by blowing a small stainless ball upward inside a cone at the of a pipe-shaped device.
www.cfri.org /news/94summer/trtm194su.html   (616 words)

  
 CHEST: Atrial Flutter: From Mechanism to Treatment - Review   (Site not responding. Last check: 2007-11-07)
The section on medical management of atrial flutter is concise, including a discussion of pharmacologic treatment of both acute and chronic flutter that is clinically relevant and quite up-to-date.
The description of flutter occurring after the suppression of atrial fibrillation treated with intracardiac antiarrhythmic agents is one such example.
However, with [is greater than] 90% of all atrial flutter being curable by radiofrequency ablation, I would have expected intracardiac electrograms of clockwise flutter, counterclockwise flutter, and complete isthmus block, plus examples demonstrating the use of the newer, computer-assisted mapping systems.
www.findarticles.com /p/articles/mi_m0984/is_2_120/ai_77806194   (704 words)

  
 flutter. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
To wave or flap rapidly in an irregular manner: curtains that fluttered in the breeze.
To move or fall in a manner suggestive of tremulous flight: “Her arms rose, fell, and fluttered with the rhythm of the song” (Evelyn Waugh).
To cause to flutter: “fluttering her bristly fl lashes as swiftly as butterflies' wings” (Margaret Mitchell).
www.bartleby.com /61/96/F0209600.html   (230 words)

  
 ATRIAL FLUTTER   (Site not responding. Last check: 2007-11-07)
Your atrial flutter may come and go, last for only a short time, or be a life-long condition.
The treatment that is right for you depends on how bad your atrial flutter is. It also depends on how long you have had atrial flutter, what is causing it, and other heart or rhythm problems you may have.
Untreated atrial flutter increases your chance of heart failure, a heart attack, or fluid in the lungs.
www.medformation.com /ac/mm_qdis.nsf/qd/nd0109g.htm   (1084 words)

  
 Atrial Flutter   (Site not responding. Last check: 2007-11-07)
Typical atrial flutter has a very characteristic ECG pattern and is caused by localized reentry with impulse pathways occupying large portions of the right atrial wall.
Therapy of atrial flutter is similar to that for atrial fibrillation.
Since atrial flutter and fibrillation frequently coexist, the risk of embolic stroke is may be increased.
www.txai.org /edu/irregular/atrial_flutter.htm   (443 words)

  
 UMMC - Atrial Fibrillation/Flutter   (Site not responding. Last check: 2007-11-07)
Atrial fibrillation and atrial flutter are abnormalities in the rhythm or rate of the heart beat.
Atrial fibrillation may be caused by such conditions as coronary artery disease, rheumatic heart disease, mitral valve problems, heart infection or an overactive thyroid gland.
Atrial flutter is often associated with a heart attack or may occur after heart or lung surgery.
www.med.umich.edu /1libr/heart/rate01.htm   (292 words)

  
 Importance of Atrial Flutter Isthmus in Postoperative Intra-Atrial Reentrant Tachycardia -- Chan et al. 102 (11): 1283 ...
of the atrial flutter isthmus in the reentrant circuit.
Atrial flutter in the young: a collaborative study of 380 cases.
Role of the tricuspid annulus and the eustachian valve/ridge on atrial flutter: relevance to catheter ablation of the septal isthmus and a new technique for rapid identification of ablation success.
circ.ahajournals.org /cgi/content/full/102/11/1283   (3959 words)

  
 eMedicine - Atrial Flutter : Article by Lawrence Rosenthal, MD, PhD
Type II atrial flutter is associated with atrial rates from 340-433 bpm and is not as well characterized electrically as type I. Type I atrial flutter can always be electrically entrained and interrupted by atrial pacing at faster rates than the intrinsic rate of the tachycardia, whereas type II atrial flutter cannot be electrically entrained.
For typical atrial flutter, pacing from the tricuspid valve isthmus during atrial flutter causes concealed entrainment such that the morphology of the paced flutter waves is identical to that of the native flutter waves.
Patients with atrial flutter and episodes of atrial fibrillation are at higher risk of thromboembolic events; however, determining whether episodes of atrial fibrillation are associated with episodes of atrial flutter is difficult.
www.emedicine.com /med/topic185.htm   (8916 words)

  
 Flutter definition - Heart Disease and other cardiovascular conditions on MedicineNet.com
Flutter: Flutter is a rapid vibration or pulsation.
The difference between flutter and fibrillation is that flutter is well organized while fibrillation is not.
For example, atrial flutter consists of well-organized but over-rapid contractions of the atrium of the heart (usually at a rate of 250-350 contractions per minute).
www.medterms.com /script/main/art.asp?articlekey=9738   (244 words)

  
 Aircraft Flutter Testing   (Site not responding. Last check: 2007-11-07)
When activated, the DEI Flutter Exciter alternately deflects the airstream upward and downward in a rapid manner, creating a force similar to that produced by an oscillating trailing edge flap.
Among them, because the DEI flutter components are a "strap-on" type of hardware, cost and complexity of fitting the system on the aircraft can be lessened.
DEI sub-scale flutter exciters are also available to incorporate into wind tunnel flutter models, permitting an aircraft builder to pre-qualify a vehicle design.
www.sti.nasa.gov /tto/spinoff1997/t8.html   (495 words)

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