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Topic: Polymorphic ventricular tachycardia


  
 Arrhythmias, Dysrhythmias, EKG, Echocardiograms: NY Emergency Room RN
Discussion includes atrial tachycardia, atrial flutter classification, paroxysmal reentrant tachycardia, and drug therapy.
Management, pharmacologic therapy, and the use of radiofrequency catheter ablation procedures are introduced.
Tachycardia Therapy Information about normal conduction, including methods of control of tachycardia rhythms.
http://www.nyerrn.com/h/a.htm

  
 Tachycardia - Wikipedia, the free encyclopedia
Arrhythmias can be treated using drugs, intervention or implantable devices.
This is caused by any of the factors mentioned above, rather than a malfunction of the heart itself.
The body contains several feedback mechanisms to maintain adequate blood flow and blood pressure.
http://en.wikipedia.org/wiki/Polymorphic_ventricular_tachycardia

  
 Polymorphic ventricular tachycardia in association with a normal QT interval
Ventricular fibrillation in patients without significant structural heart disease: A multicenter experience with implantable cardioverter-defibrillator therapy.
Polymorphous ventricular tachycardia associated with acute myocardial infarction.
This conversion may be helpful, since it permits electrophysiologic mapping of the ventricular tachycardia and successful application of surgical or catheter ablative therapeutic techniques.
http://cmbi.bjmu.edu.cn/uptodate/critical%20care/Critical%20care%20cardiology/Polymorphic%20ventricular%20tachycardia%20in%20association%20with%20a%20normal%20QT%20interval.htm

  
 Welcome to Ventricular Tachycardia
Intravenous lidocaine for ventricular tachycardia associated with acute myocardial infarction.
To become familiar with drug and device therapy for ventricular tachycardia
This is the only ventricular tachycardia that is consistently responsive to intravenous verapamil, a treatment generally contraindicated in ventricular tachycardia.
http://www.lhsc.on.ca/uwodoc/pages/vt.htm

  
 Ventricular Tachyarrhythmias
Medically it is helpful to considered ventricular tachyarrhythmias as either being associated with structural heart disease or not associated with any demonstrable structural problem with the heart.
Medically it is helpful to considered ventricular tachyarrhythmias as either being due to structural heart disease, caused by medicines or no associated with any demonstrable structural problem with the hear of definable cause.
http://www.txai.org/edu/irregular/ventricular_tachyarrhythmias.htm

  
 s000626b - Torsades de Points - Treatment
Ventricular fibrillation and polymorphic ventricular tachycardia with critical coronary artery stenosis: does bypass surgery suffice?.
Recent literature suggests that polymorphic ventricular tachycardia (PVT) is more common during cardiopulmonary arrest than previously thought but responds poorly to advanced cardiac life support (ACLS) therapy.
Comparison of prehospital monomorphic and polymorphic ventricular tachycardia: prevalence, response to therapy, and outcome.
http://www.emory.edu/WHSCL/grady/amreport/litsrch99/s000626b.html

  
 eMedicine - Ventricular Tachycardia : Article by Steven J Compton, MD, FACC, FACP
Amiodarone (Cordarone, Pacerone) -- Now the drug of choice in treatment of unstable ventricular arrhythmias.
Premature ventricular beats are induced following conditioning pacing drives, in an attempt to induce reentrant arrhythmia.
Study of other families with polymorphic VT has implicated the cardiac sodium channel (Brugada syndrome, some long QT syndromes) and cardiac sarcoplasmic reticular calcium channels (familial polymorphic VT, possibly one form of arrhythmogenic right ventricular dysplasia).
http://www.emedicine.com/med/topic2367.htm

  
 Sustained Ventricular Tachycardia
A fairly specific electrophysiologic mechanism, "early afterdepolarizations", caused by a malfunctioning sodium or potassium channel, appears to be responsible for torsade de pointes, which can be treated by drugs or an ICD.
In spite of the previous history of complete heart block, it was felt that intravenous procainamide, if carefully controlled, was the treatment of choice.
The author suggests that PHT may represent a drug with a wide margin of safety that is effective in controlling serious ventricular hyperirritability.
http://www.rjmatthewsmd.com/Definitions/ventricular_tachycardia.htm

  
 ABC of clinical electrocardiography: Broad complex tachycardia---Part II -- Edhouse and Morris 324 (7340): 776 -- BMJ
The safest option is to regard a broad complex tachycardia of uncertain origin as ventricular tachycardia unless good evidence suggests a supraventricular origin
during the tachycardia (especially if the change is >40° to the
does not usually affect a ventricular tachycardia but
http://www.bmj.com/cgi/content/full/324/7340/776

  
 ORIGINAL ARTICLE
Monomorphic ventricular tachycardia seems more common in patients with a depressed ejection fraction, a prior history of myocardial infarction and has a much higher inducibility rate on electrophysiological study, suggesting a
On the other hand, non-sustained ventricular arrhythmias do not seem to represent an ominous sign for the postoperative prognosis of surgically revascularized patients (15).
Finally, a left ventricular vent was only rarely used.
http://www.hmc.org.qa/hmc/heartviews/heartviews/orig62.htm

  
 eMedicine - Ventricular Tachycardia : Article by William Ernoehazy, Jr, MD, FACEP
Unstable VT is treated as ventricular fibrillation, with immediate synchronized cardioversion, followed by expeditious airway management (if needed), supplemental oxygenation, vascular access, and antiarrhythmic therapy.
Pathophysiology: VT usually is a consequence of structural heart disease, with breakdown of normal conduction patterns, increased automaticity (which tends to favor ectopic foci), and activation of re-entrant pathways in the ventricular conduction system.
Unstable VT Unstable VT is characterized by symptoms of insufficient oxygen delivery such as chest pain, dyspnea, hypotension, or altered level of consciousness, indicating rate and stroke volume are not providing adequate cardiac output.
http://www.emedicine.com/emerg/topic634.htm

  
 Heart Info-The Right Workout for Those With Congenital Heart Defects
The statement, published in the June 7 issue of Circulation, is meant to help doctors counsel patients who have an increased risk for sudden death while they're doing physical activity.
The statement was prepared by the Working Groups of the American Heart Association Committee on Exercise, Cardiac Rehabilitation and Prevention, and the councils on Clinical Cardiology and Cardiovascular Disease in the Young.
This includes people with a number of kinds of genetic heart disease such as: hypertrophic cardiomyopathy ; arrhythmogenic right ventricular cardiomyopathy; Marfan syndrome ; and ion channel diseases, including long QT syndrome, Brugada syndrome and catecholaminergic polymorphic ventricular tachycardia.
http://www.heartinfo.com/ms/news/519376/main.html

  
 Catecholaminergic polymorphic ventricular tachycardia: electrocardiographic characteristics and optimal therapeutic ...
tachycardia is the same clinical entity and has the same mechanism
Exercise-induced ventricular arrhythmias and sudden cardiac death in a family.
or bidirectional ventricular tachycardia may develop in association
http://heart.bmjjournals.com/cgi/content/full/89/1/66

  
 Product Abstract: Magnesium
The probable proarrhythmic action of amiodarone, although rare, is reviewed along with a discussion of the novel use of intravenous magnesium sulfate therapy.
Magnesium deficiency-related changes in lipid peroxidation and collagen metabolism in vivo in rat heart.
Nonsustained polymorphous ventricular tachycardia during amiodarone therapy for atrial fibrillation complicating cardiomyopathy.
http://www.lef.org/prod_hp/abstracts/php-ab236c.html

  
 Cardiac Arrhythmia - Ventricular Tachycardia
Also termed polymorphic ventricular tachycardia, this condition shows a movement in the reentrant mechanism.
The condition is dangerous if the rate increases to the point when the R wave overlaps with the T wave.
Usually initiated by premature ventricular complexes, ventricular tachycardia is continued by re-entry mechanisms.
http://www.cardionetics.com/docs/healthcr/ecg/arrhy/0601_bd.htm

  
 Nonsustained Ventricular Tachycardia in Coronary Artery Disease: Relation to Inducible Sustained Ventricular ...
The relationship of paroxysmal ventricular tachycardia complicating the acute phase and ventricular arrhythmia during the late hospital phase of myocardial infarction to long-term survival.
slightly slower in patients with inducible ventricular tachycardia
tachycardia was recorded in 86% of patients, and polymorphic
http://www.annals.org/cgi/content/full/125/1/35

  
 VENTRICULAR TACHYCARDIA
A slower and less dangerous form of VT.
VT can sometimes develop even when a patient has no other underlying conditions.
For example, their VT may permanently resolve after their medication has been changed.
http://www.heartcenteronline.com/myheartdr/common/artprn_rev.cfm?filename=&ARTID=493

  
 Inducible polymorphic ventricular tachyarrhythmias in a transgenic mouse model with a long Q-T phenotype -- Jeron et ...
Selective elimination of IK,slow1 in mouse ventricular myocytes expressing a dominant negative Kv1.5{alpha} subunit
a preliminary right ventricular effective refractory period (RVERP).
underlie the polymorphic and transient nature of the arrhythmia
http://ajpheart.physiology.org/cgi/content/full/278/6/H1891

  
 Polymorphic Ventricular Tachycardia
If the patient is awake, alert and perfusing, then one can try antiarrhythmic drugs first (e.g.
Polymorphic ventricular tachycardia suggests that many different diseased foci in the myocardium participate in generating the tachycardia.
If the patient is in cardiac arrest, then CPR, defibrillation, and the usual VF/VT algorithm should be followed.
http://www.powellvu.com/nursing/acls/Poly0010.htm

  
 Module A, Annotation M:Monitor And Treat Life-Threatening Arrhythmias
Amiodarone, on the other hand, does not have the same adverse cardiovascular profile and should be considered the antiarrhythmic of choice in the setting of an AMI.
Complete heart block with a wide ventricular escape
All other sustained, monomorphic ventricular tachycardia can be treated initially with medical therapy, including lidocaine, procainamide, or intravenous amiodarone.
http://www.oqp.med.va.gov/cpg/IHD/IHD_CPG/content/moduleA/IHDModA_M_anno.htm

  
 Purkinje-Muscle Reentry as a Mechanism of Polymorphic Ventricular Arrhythmias in a 3-Dimensional Model of the ...
The use of high-resolution mapping techniques in the study of ventricular
PVT, with no structural cardiac disease, was documented.
Purkinje-Muscle Reentry as a Mechanism of Polymorphic Ventricular Arrhythmias in a 3-Dimensional Model of the Ventricles -- Berenfeld and Jalife 82 (10): 1063 -- Circulation Research
http://www.circresaha.org/cgi/content/full/82/10/1063

  
 Non-invasive evaluation of ventricular refractoriness and its dispersion during ventricular fibrillation in patients ...
Non-invasive evaluation of ventricular refractoriness and its dispersion during ventricular fibrillation in patients with implantable cardioverter defibrillator
http://bmc.ub.uni-potsdam.de/1471-2261-4-8

  
 Sotalol associated polymorphic ventricular tachycardia and coronary spasm -- Lowe et al. 79 (5): 518 -- Heart
ventricular tachycardia in patients treated with sotalol may therefore
A comparison of seven antiarrhythmic drugs in patients with ventricular tachyarrhythmias.
Sotalol associated polymorphic ventricular tachycardia and coronary spasm
http://www.heartjnl.com/cgi/content/full/79/5/518

  
 Faculty Publications
Sugarbaker P.H. Cytoreductive surgery and perioperative intraperitoneal chemotherapy as a curative approach to pseudomyxoma peritonei syndrome.
Lundergan C.F.; Ross A.M.; McCarthy W.F.; Reiner J.S.; Boyle D.; Fink C.; Califf R.M.; Topol E.J.; Simoons M.L.; Van Den Brand M.; Van de Werf F. and Coyne K.S. Predictors of left ventricular function after acute myocardial infarction: effects of time to treatment, patency, and body mass index: the GUSTO-I angiographic experience.
Suddath W.O.; Deychak Y. and Varghese P.J. Electrophysiologic basis by which epinephrine facilitates defibrillation after prolonged episodes of ventricular fibrillation.
http://eleanor.gwumc.gwu.edu/publist/2001/

  
 Pregnancy, labour and delivery in a Jehovah's Witness with esophageal varices and thrombocytopenia. Pulmonary ...
Pulmonary hypertension associated with liver cirrhosis: an echocardiographic study.
The patient also had an episode of polymorphic ventricular tachycardia during hospitalization that degenerated into ventricular fibrillation.
In conclusion, the echocardiographic examination (a noninvasive technique), appears suitable for detecting pulmonary hypertension in patients with compensated liver cirrhosis, and can elucidate some aspects of the clinical course of the so-called PPH syndrome.
http://hypertension-6.viagenbio.com/hypertension-research-abs3.759.html

  
 Catecholaminergic ventricular tachycardia
The arrhythmias observed in the affected patients usually show the peculiar ECG pattern of bi-directional ventricular tachycardia and are reproducibly elicited either during exercise or by beta adrenergic stimulation with isoproterenol infusion.
The fact that only 4 out of 12 probands affected with CPVT have been genotyped on hRyR2 gene might suggest the hypothesis that, in analogy with other arrhythmogenic disorders, genetic heterogeneity is present in Catecholaminergic Ventricular Tachycardia.
described an autosomal dominant arrhythmic syndrome characterized by exercise induced polymorphic ventricular tachycardia in the absence of detectable structural heart disease.
http://pc4.fsm.it:81/cardmoc/CVTsynopsis.htm

  
 Mutations in the cardiac ryanodine receptor gene (RyR2) underlie catecholaminergic polymorphic ventricular tachycardia ...
Beta-Blockers reduce arrhythmias, but in 30% of patients an implantable defibrillator may be required.
The study population included subjects with documented polymorphic ventricular tachycardia (occurred during exercise or emotional stress) and a structurally normal heart.
The aim of the study was to define clinical characteristics of patients with mutations in RyR2 gene, compared to patients with non-genotyped CPVT.
http://www.sicped.it/sicp2003/c8.htm

  
 Reversible ventricular dysfunction (takotsubo cardiomyopathy) following polymorphic ventricular tachycardia
Reversible ventricular dysfunction (takotsubo cardiomyopathy) following polymorphic ventricular tachycardia
Key Words: Catecholamine; Electrophysiological study; Reversible ventricular dysfunction; Takotsubo cardiomyopathy; Ventricular tachycardia
Although no treatment was given to maintain hemodynamic stability, echocardiography revealed normal left ventricular contraction 14 days after the onset of the ventricular dysfunction.
http://www.pulsus.com/CARDIOL/19_04/akas_ed.htm

  
 Autosomal recessive catecholamine-induced polymorphic ventricular tachycardia
Catecholamine-induced polymorphic ventricular tachycardia (PVT) is characterized by episodes of syncope, seizures or sudden death, in response to physical activity or emotional stress, and affects mainly young children with morphologically normal hearts.
The implication of the calcium release cascade in this disease may lead to a better understanding of the pathophysiological events underlying ventricular tachycardia, and to the use of drugs directly involved in intracellular calcium control for the treatment of the PVT patients.
Registered users can view the complete article in Pdf format.
http://www.pulsus.com/europe/07_02/laha_ed.htm

  
 Cardiology - Wikipedia, the free encyclopedia
Specific diseases of the electrical system of the heart
Disorders of the electrical system of the heart (
Arrhythmogenic right ventricular dysplasia (Arrhythmogenic right ventricular cardiomyopathy)
http://en.wikipedia.org/wiki/Cardiology

  
 Polymorphic Ventricular Tachycardia and Repolarization Abnormalities Accompanying Intracerebral Hemorrhage -- Danenberg ...
The patient was admitted to an intensive care unit, where
Deep, symmetrical T-wave inversion in precordial leads, followed by nonsustained polymorphic ventricular tachycardia.
Polymorphic Ventricular Tachycardia and Repolarization Abnormalities Accompanying Intracerebral Hemorrhage -- Danenberg and Hasin 101 (6): 81 -- Circulation
http://www.circulationaha.org/cgi/content/full/101/6/e81

  
 SmartPedia.com - Free Online Encyclopedia - Encyclopedia Books.
Perhaps there is an entry Polymorphic ventricular tachycardia in our sister dictionary project,Wiktionary.
If you created an article under this title previously, it may have been deleted.
http://www.smartpedia.com/smart/browse/Polymorphic_ventricular_tachycardia

  
 Medtronic Reveal - For Health Professionals - Syncope Case Report
Recordings (above) showed ventricular tachycardia (VT) and ventricular fibrillation (VF)
EP study showed intraventricular conduction dely with prolonged HV (70 msec, normal AV conduction and atrial and ventricular vulnerability
A dual chamber ICD was implanted with the ventricular frequency stabilization feature programmed ON Two month follow-up showed several self-terminating tachycardia episodes and one sustained VT terminated by the ICD's shock
http://www.medtronic.co.uk/reveal/tachycase_4.html

  
 Implantable cardioverter defibrillator.
Most of this 12-lead recording is polymorphic ventricular tachycardia but, in the rhythm strip, the large deflection (arrowed) is the defibrillator discharging.
Following the defibrillation a dual chamber pacemaker can be seen.
http://www.ecglibrary.com/icd.html

  
 REPOLARIZATION ABNORMALITIES DURING EXERCISE DISTINGUISH CATECHOLAMINERGIC POLYMORPHIC VENTRICULAR TACHYCARDIA (CPVT) ...
CONCLUSION: CPVT patients exhibit subtle repolarization abnormalities and frequent ventricular ectopy during stress testing.
REPOLARIZATION ABNORMALITIES DURING EXERCISE DISTINGUISH CATECHOLAMINERGIC POLYMORPHIC VENTRICULAR TACHYCARDIA (CPVT) FROM LONG QT SYNDROME (LQTS)*
REPOLARIZATION ABNORMALITIES DURING EXERCISE DISTINGUISH CATECHOLAMINERGIC POLYMORPHIC VENTRICULAR TACHYCARDIA (CPVT) FROM LONG QT SYNDROME (LQTS)
http://www.ccs.ca/society/congress2002/abstracts/abs/a436.htm

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