Page last updated: 2024-10-31

mexiletine and Torsade de Pointes

mexiletine has been researched along with Torsade de Pointes in 13 studies

Mexiletine: Antiarrhythmic agent pharmacologically similar to LIDOCAINE. It may have some anticonvulsant properties.
mexiletine : An aromatic ether which is 2,6-dimethylphenyl ether of 2-aminopropan-1-ol.

Research Excerpts

ExcerptRelevanceReference
"We report a 28-year-old female patient with congenital type 2 long QT syndrome (LQTS) in which mexiletine shortened corrected QT interval (QTc) and effectively prevented refractory Torsade de Pointes (TdP) and ventricular fibrillation (VF)."8.12Mexiletine effectively prevented refractory Torsades de Pointes and ventricular fibrillation in a patient with congenital type 2 long QT syndrome. ( Kai, K; Nakashima, R; Sakamoto, K; Takase, S; Tsutsui, H, 2022)
"Erythromycin is a selective IKr-blocking, action potential duration (APD)-prolonging drug, which may induce early afterdepolarizations (EADs) and torsade de pointes ventricular tachycardia."7.70Suppression of erythromycin-induced early afterdepolarizations and torsade de pointes ventricular tachycardia by mexiletine. ( Fazekas, T; Krassói, I; Lengyel, C; Papp, JG; Varró, A, 1998)
"The arrhythmogenic and electrophysiologic properties of sotalol, a class III antiarrhythmic drug, administered alone and in combination with mexiletine, a class I antiarrhythmic drug, were compared in conscious dogs predisposed to torsade de pointes arrhythmias."7.69Mexiletine antagonizes effects of sotalol on QT interval duration and its proarrhythmic effects in a canine model of torsade de pointes. ( Chézalviel-Guilbert, F; Davy, JM; Poirier, JM; Weissenburger, J, 1995)
"We report a 28-year-old female patient with congenital type 2 long QT syndrome (LQTS) in which mexiletine shortened corrected QT interval (QTc) and effectively prevented refractory Torsade de Pointes (TdP) and ventricular fibrillation (VF)."4.12Mexiletine effectively prevented refractory Torsades de Pointes and ventricular fibrillation in a patient with congenital type 2 long QT syndrome. ( Kai, K; Nakashima, R; Sakamoto, K; Takase, S; Tsutsui, H, 2022)
"It has been suggested that both pacing and treatment with mexiletine may reduce torsade de pointes (TdP) arrhythmias in patients with long QT syndrome 3 (LQT3), but it is not fully understood how these interventions could prevent TdP."3.72Effect of pacing and mexiletine on dispersion of repolarisation and arrhythmias in DeltaKPQ SCN5A (long QT3) mice. ( Breithardt, G; Carmeliet, E; Carmeliet, P; Fabritz, L; Franz, MR; Haverkamp, W; Kirchhof, P; Nuyens, D; Ottenhof, A; Rossenbacker, T, 2003)
"Erythromycin is a selective IKr-blocking, action potential duration (APD)-prolonging drug, which may induce early afterdepolarizations (EADs) and torsade de pointes ventricular tachycardia."3.70Suppression of erythromycin-induced early afterdepolarizations and torsade de pointes ventricular tachycardia by mexiletine. ( Fazekas, T; Krassói, I; Lengyel, C; Papp, JG; Varró, A, 1998)
"The arrhythmogenic and electrophysiologic properties of sotalol, a class III antiarrhythmic drug, administered alone and in combination with mexiletine, a class I antiarrhythmic drug, were compared in conscious dogs predisposed to torsade de pointes arrhythmias."3.69Mexiletine antagonizes effects of sotalol on QT interval duration and its proarrhythmic effects in a canine model of torsade de pointes. ( Chézalviel-Guilbert, F; Davy, JM; Poirier, JM; Weissenburger, J, 1995)
"d-Sotalol was used to mimic LQT2, whereas ATX-II mimicked LQT3."1.30Sodium channel block with mexiletine is effective in reducing dispersion of repolarization and preventing torsade des pointes in LQT2 and LQT3 models of the long-QT syndrome. ( Antzelevitch, C; Shimizu, W, 1997)

Research

Studies (13)

TimeframeStudies, this research(%)All Research%
pre-19900 (0.00)18.7374
1990's4 (30.77)18.2507
2000's4 (30.77)29.6817
2010's4 (30.77)24.3611
2020's1 (7.69)2.80

Authors

AuthorsStudies
Mirams, GR1
Cui, Y1
Sher, A1
Fink, M1
Cooper, J1
Heath, BM1
McMahon, NC1
Gavaghan, DJ1
Noble, D1
Nakashima, R1
Takase, S1
Kai, K1
Sakamoto, K1
Tsutsui, H1
Vicente, J1
Johannesen, L1
Hosseini, M1
Mason, JW1
Sager, PT1
Pueyo, E1
Strauss, DG1
Aziz, PF1
Tanel, RE1
Zelster, IJ1
Pass, RH1
Wieand, TS1
Vetter, VL1
Vogel, RL1
Shah, MJ1
Sato, A1
Chinushi, M1
Suzuki, H1
Numano, F1
Hanyu, T1
Iijima, K1
Watanabe, H1
Furushima, H1
Fabritz, L1
Kirchhof, P1
Franz, MR1
Nuyens, D1
Rossenbacker, T1
Ottenhof, A1
Haverkamp, W2
Breithardt, G1
Carmeliet, E1
Carmeliet, P1
Takeuchi, T1
Sato, N1
Kawamura, Y1
Takahashi, F1
Sato, M1
Kikuchi, K1
Akasaka, N1
Go, K1
Fujimoto, K1
Hasebe, N1
Kehl, HG1
Rellensmann, G1
Yelbuz, TM1
Krasemann, T1
Vogt, J1
Schulze-Bahr, E1
Divekar, A1
Soni, R1
Chézalviel-Guilbert, F1
Davy, JM1
Poirier, JM1
Weissenburger, J1
Shimizu, W2
Antzelevitch, C2
Fazekas, T1
Krassói, I1
Lengyel, C1
Varró, A1
Papp, JG1

Clinical Trials (2)

Trial Overview

TrialPhaseEnrollmentStudy TypeStart DateStatus
A Double-Blind, Randomized, Placebo-Controlled Single-Dose, Five Period Crossover Study of the Electrocardiographic Effects of Ranolazine, Dofetilide, Verapamil, and Quinidine in Healthy Subjects[NCT01873950]Phase 122 participants (Actual)Interventional2013-05-31Completed
Five Period Crossover Study of the Ability of Late Sodium or Calcium Current Block (Mexiletine, Lidocaine, or Diltiazem) to Balance the Electrocardiographic Effects of hERG Potassium Current Block (Dofetilide or Moxifloxacin)[NCT02308748]Phase 122 participants (Actual)Interventional2014-05-31Completed
[information is prepared from clinicaltrials.gov, extracted Sep-2024]

Trial Outcomes

Change in Relationship (Ratio) Between Heart Rate and QT

Different post-dose time-points employ different techniques for altering heart rate (leg raises and postural maneuvers). Using the measurements from all the time-points of postural maneuvers, the QT/RR relationship was modeled as a linear relationship between the square root of RR in seconds and QT in seconds and computed on a by subject, treatment and time-point basis. The change in the QT and heart rate relationship was assessed as the difference (mean and 95% CI) between the slopes from the models for each drug vs. placebo. (NCT01873950)
Timeframe: 24 hours

Interventionratio (Mean)
Ranolazine 1500mg0.01
Dofetilide 500mcg0.06
Verapamil HCl 120 mg0.02
Quinidine Sulfate 400mg0.11

Change in Spatial QRS-T Angle Using Exposure/Response (Dofetilide and Verapamil Arms)

"The exposure response analysis will be performed for each treatment and will use a linear or nonlinear model (as determined by visual inspection) to quantify the relationship between exposure and Baseline and placebo adjusted change from Baseline for each ECG parameter (same as for primary analysis).~The magnitude of change (mean and 95% CI) in spatial QRS-T angle for the observed mean Cmax for each drug may be calculated." (NCT01873950)
Timeframe: 24 hours

Interventiondegrees per ng/ml (Mean)
Dofetilide 500mcg-3.9
Verapamil HCl 120 mg0.4

Change in Spatial QRS-T Angle Using Exposure/Response (Ranolazine and Quinidine Arms)

"The exposure response analysis will be performed for each treatment and will use a linear or nonlinear model (as determined by visual inspection) to quantify the relationship between exposure and Baseline and placebo adjusted change from Baseline for each ECG parameter (same as for primary analysis).~The magnitude of change (mean and 95% CI) in spatial QRS-T angle for the observed mean Cmax for each drug may be calculated." (NCT01873950)
Timeframe: 24 hours

Interventiondegrees per mcg/ml (Mean)
Ranolazine 1500mg-1.0
Quinidine Sulfate 400mg2.7

Change in Ventricular Gradient Using Exposure/Response (Dofetilide and Verapamil Arms)

"The exposure response analysis will be performed for each treatment and will use a linear or nonlinear model (as determined by visual inspection) to quantify the relationship between exposure and Baseline and placebo adjusted change from Baseline for each ECG parameter (same as for primary analysis).~The magnitude of change (mean and 95% CI) in ventricular gradient for the observed mean Cmax for each drug may be calculated." (NCT01873950)
Timeframe: 24 hours

InterventionmV.ns per ng/ml (Mean)
Dofetilide 500mcg4.0
Verapamil HCl 120 mg1.2

Change in Ventricular Gradient Using Exposure/Response (Ranolazine and Quinidine Arms)

"The exposure response analysis will be performed for each treatment and will use a linear or nonlinear model (as determined by visual inspection) to quantify the relationship between exposure and Baseline and placebo adjusted change from Baseline for each ECG parameter (same as for primary analysis).~The magnitude of change (mean and 95% CI) in ventricular gradient for the observed mean Cmax for each drug may be calculated." (NCT01873950)
Timeframe: 24 hours

InterventionmV.ns per mcg/ml (Mean)
Ranolazine 1500mg-0.7
Quinidine Sulfate 400mg1.6

Placebo, and Baseline-adjusted Changes in Spatial QRS-T Angle

Compute maximum mean placebo, and baseline-adjusted change for: spatial QRS-T angle (degrees) (NCT01873950)
Timeframe: 24 hours

Interventiondegrees (Least Squares Mean)
Ranolazine 1500mg-2.2
Dofetilide 500mcg-4.9
Verapamil HCl 120 mg-2.4
Quinidine Sulfate 400mg3.9

Placebo, and Baseline-adjusted Changes in Ventricular Gradient

Compute maximum mean placebo, and baseline-adjusted change for: ventricular gradient (mV*ms). (NCT01873950)
Timeframe: 24 hours

InterventionmV*ms (Least Squares Mean)
Ranolazine 1500mg2.5
Dofetilide 500mcg4.8
Verapamil HCl 120 mg4.2
Quinidine Sulfate 400mg6.0

Change in PR, QRS, J-Tpeak, Tpeak-Tend and QTc Using Exposure/Response (Dofetilide and Verapamil Arms)

"The exposure response analysis will be performed for each treatment and will use a linear or nonlinear model (as determined by visual inspection) to quantify the relationship between exposure and Baseline and placebo adjusted change from Baseline for each ECG parameter (same as for primary analysis).~The magnitude of change (mean and 95% CI) in QTc for the observed mean Cmax for each drug may be calculated." (NCT01873950)
Timeframe: 24 hours

,
Interventionms per ng/ml (Mean)
Change in PRChange in QTcChange in QRSChange in J-TpeakcChange in Tpeak-Tend
Dofetilide 500mcg-0.573.60.239.134.4
Verapamil HCl 120 mg28.73.90.3-0.73.6

Change in PR, QRS, J-Tpeak, Tpeak-Tend and QTc Using Exposure/Response (Ranolazine and Quinidine Arms)

"The exposure response analysis will be performed for each treatment and will use a linear or nonlinear model (as determined by visual inspection) to quantify the relationship between exposure and Baseline and placebo adjusted change from Baseline for each ECG parameter (same as for primary analysis).~The magnitude of change (mean and 95% CI) in QTc for the observed mean Cmax for each drug may be calculated." (NCT01873950)
Timeframe: 24 hours

,
Interventionms per mcg/ml (Mean)
Change in PRChange in QTcChange in QRSChange in J-TpeakcChange in Tpeak-Tend
Quinidine Sulfate 400mg3.078.90.426.151.2
Ranolazine 1500mg4.212.00.80.710.0

Placebo, and Baseline-adjusted Changes in PR, QRS, J-Tpeak, Tpeak-Tend and QTc

Compute maximum mean placebo, and baseline-adjusted change for: PR (ms), QRS (ms), J-Tpeak (ms), Tpeak-Tend (ms) and QTc (ms) (NCT01873950)
Timeframe: 24 hours

,,,
Interventionms (Least Squares Mean)
Change in PR intervalChange in QRS durationChange in J-TpeakcChange in Tpeak-TendChange in QTc
Dofetilide 500mcg2.31.139.540.079.3
Quinidine Sulfate 400mg5.12.129.149.878.1
Ranolazine 1500mg6.52.73.38.812.6
Verapamil HCl 120 mg32.12.6-2.44.85.2

Change in Placebo Corrected Change From Baseline QTc Interval on the ECG Measured in Milliseconds When Moxifloxacin is Administered With Diltiazem at the Evening Dose Compared to When Moxifloxacin is Administered Alone at Afternoon Dose on Treatment Day.

Evening dose (moxifloxacin+diltiazem) versus afternoon dose (diltiazem alone). (NCT02308748)
Timeframe: 5 weeks

Interventionms (Mean)
Moxifloxacin Alone29.9
Moxifloxacin + Diltiazem31.3

Change in Placebo Corrected Change From Baseline QTc and J-Tpeakc Intervals on the ECG Measured in Milliseconds When Dofetilide is Administered With Mexiletine or Lidocaine Compared to When Dofetilide is Administered Alone at Evening Dose on Treatment Day

After 3rd dose of mexiletine or lidocaine (evening dose) on treatment day when combined with dofetilide to evening dose on dofetilide alone day. (NCT02308748)
Timeframe: 5 weeks

,,
Interventionms (Mean)
Placebo corrected change from baseline in QTcPlacebo corrected change from baseline in J-Tpeakc
Dofetilide + Lidocaine183.5
Dofetilide + Mexiletine20.40.8
Dofetilide Alone37.924.0

Trials

1 trial available for mexiletine and Torsade de Pointes

ArticleYear
Electrocardiographic Biomarkers for Detection of Drug-Induced Late Sodium Current Block.
    PloS one, 2016, Volume: 11, Issue:12

    Topics: Adult; Biomarkers; Calcium Channel Blockers; Cross-Over Studies; Electrocardiography; Ether-A-Go-Go

2016
Electrocardiographic Biomarkers for Detection of Drug-Induced Late Sodium Current Block.
    PloS one, 2016, Volume: 11, Issue:12

    Topics: Adult; Biomarkers; Calcium Channel Blockers; Cross-Over Studies; Electrocardiography; Ether-A-Go-Go

2016
Electrocardiographic Biomarkers for Detection of Drug-Induced Late Sodium Current Block.
    PloS one, 2016, Volume: 11, Issue:12

    Topics: Adult; Biomarkers; Calcium Channel Blockers; Cross-Over Studies; Electrocardiography; Ether-A-Go-Go

2016
Electrocardiographic Biomarkers for Detection of Drug-Induced Late Sodium Current Block.
    PloS one, 2016, Volume: 11, Issue:12

    Topics: Adult; Biomarkers; Calcium Channel Blockers; Cross-Over Studies; Electrocardiography; Ether-A-Go-Go

2016

Other Studies

12 other studies available for mexiletine and Torsade de Pointes

ArticleYear
Simulation of multiple ion channel block provides improved early prediction of compounds' clinical torsadogenic risk.
    Cardiovascular research, 2011, Jul-01, Volume: 91, Issue:1

    Topics: Action Potentials; Animals; Calcium Channel Blockers; Calcium Channels, L-Type; Computer Simulation;

2011
Mexiletine effectively prevented refractory Torsades de Pointes and ventricular fibrillation in a patient with congenital type 2 long QT syndrome.
    Journal of cardiovascular electrophysiology, 2022, Volume: 33, Issue:7

    Topics: Adult; Arrhythmias, Cardiac; DNA-Binding Proteins; Electrocardiography; Female; Humans; Long QT Synd

2022
Congenital long QT syndrome and 2:1 atrioventricular block: an optimistic outcome in the current era.
    Heart rhythm, 2010, Volume: 7, Issue:6

    Topics: Adrenergic beta-Antagonists; Anti-Arrhythmia Agents; Atrioventricular Block; Child; Child, Preschool

2010
Long QT syndrome with nocturnal cardiac events caused by a KCNH2 missense mutation (G604S).
    Internal medicine (Tokyo, Japan), 2012, Volume: 51, Issue:14

    Topics: Child; Electrocardiography; Epinephrine; ERG1 Potassium Channel; Ether-A-Go-Go Potassium Channels; G

2012
Effect of pacing and mexiletine on dispersion of repolarisation and arrhythmias in DeltaKPQ SCN5A (long QT3) mice.
    Cardiovascular research, 2003, Mar-15, Volume: 57, Issue:4

    Topics: Action Potentials; Animals; Anti-Arrhythmia Agents; Cardiac Pacing, Artificial; Disease Models, Anim

2003
A case of a short-coupled variant of torsades de Pointes with electrical storm.
    Pacing and clinical electrophysiology : PACE, 2003, Volume: 26, Issue:2 Pt 1

    Topics: Electrocardiography; Electrophysiologic Techniques, Cardiac; Humans; Male; Mexiletine; Middle Aged;

2003
Images in cardiovascular medicine. Life-threatening neonatal arrhythmia: successful treatment and confirmation of clinically suspected extreme long QT-syndrome-3.
    Circulation, 2004, May-11, Volume: 109, Issue:18

    Topics: Bradycardia; Cardiovascular Agents; Electrocardiography; Heart Block; Humans; Infant, Newborn; Infan

2004
Successful parental use of an automated external defibrillator for an infant with long-QT syndrome.
    Pediatrics, 2006, Volume: 118, Issue:2

    Topics: Anti-Arrhythmia Agents; Combined Modality Therapy; Death, Sudden, Cardiac; Defibrillators; Defibrill

2006
Mexiletine antagonizes effects of sotalol on QT interval duration and its proarrhythmic effects in a canine model of torsade de pointes.
    Journal of the American College of Cardiology, 1995, Volume: 26, Issue:3

    Topics: Analysis of Variance; Animals; Disease Models, Animal; Dogs; Drug Evaluation, Preclinical; Drug Inte

1995
Sodium channel block with mexiletine is effective in reducing dispersion of repolarization and preventing torsade des pointes in LQT2 and LQT3 models of the long-QT syndrome.
    Circulation, 1997, Sep-16, Volume: 96, Issue:6

    Topics: Action Potentials; Animals; Anti-Arrhythmia Agents; Benz(a)Anthracenes; Dogs; Electrocardiography; H

1997
Suppression of erythromycin-induced early afterdepolarizations and torsade de pointes ventricular tachycardia by mexiletine.
    Pacing and clinical electrophysiology : PACE, 1998, Volume: 21, Issue:1 Pt 2

    Topics: Action Potentials; Animals; Anti-Arrhythmia Agents; Anti-Bacterial Agents; Dogs; Electric Stimulatio

1998
Cellular basis for the ECG features of the LQT1 form of the long-QT syndrome: effects of beta-adrenergic agonists and antagonists and sodium channel blockers on transmural dispersion of repolarization and torsade de pointes.
    Circulation, 1998, Nov-24, Volume: 98, Issue:21

    Topics: Adrenergic beta-Agonists; Adrenergic beta-Antagonists; Animals; Disease Models, Animal; Dogs; Dose-R

1998