repolarization


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repolarization

 [re″po-lah-rĭza´shun]
1. the reestablishment of polarity, especially the return of a cell's membrane potential to resting potential after depolarization.
2. in cardiac physiology, the restoration of the cell to its maximal diastolic potential, represented by phase 0 to phase 3 of the action potential.

re·po·lar·i·za·tion

(rē'pō-lăr-i-zā'shŭn),
The process whereby the membrane, cell, or fiber, after depolarization, is polarized again, with positive charges on the outer and negative charges on the inner surface.

repolarization

(rē-pō′lər-ĭ-zā′shən)
n.
The restoration of a polarized state across a membrane, as in a muscle fiber following contraction.

re·po·lar·i·za·tion

(rē-pō'lăr-ī-zā'shŭn)
The process whereby the membrane, cell, or fiber, after depolarization, is polarized again, with positive charges on the outer and negative charges on the inner surface.

repolarization

Restoration of the resting polarized state in a muscle or nerve fibre. Polarization implies a balanced electrical charge on either side of the fibre membrane, being, in the resting state, negative on the inside and positive on the outside. In depolarization the charges are locally reversed.
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References in periodicals archive ?
The autonomic and intrinsic cardiac involvement affects ventricular repolarization and prolongs QTc and Tp-e intervals (14, 15).
Electrocardiographic Findings of Leprosy
KEYWORDS: Advanced age, Arrhythmia, Electrocardiogram, Pregnancy, Ventricular repolarization.
Assessment of increased risk of arrhythmia in advanced age pregnancies
showed that elevated repolarization ability is directly associated with sympathetic cardiac activation in patients with essential hypertension.
Comparative assessment of effects of calcium channel antagonists, amlodipine, and cilnidipine, on QT interval in hypertensive patients - An observational study
The most common arrhythmia was found to be Supra ventricular tachycardia (SVT) 126 (44%), followed by premature ventricular contractions (PVCs) 80 (28%), early repolarization 34 (11.9%), Atrial fibrillation (AF) 25(8.7%), first degree heart block 15(5.2%),inappropriate sinus tachycardia (IST) 6 (2.1%).
ARRHYTHMIAS AMONG YOUNG MALE SOLDIERS UP TO 40 YEARS OF AGE WITH STRUCTURALLY NORMAL HEART
Prominent positive atrial repolarization waves ([T.sub.a]) are seen after the QRS complexes in leads II, III, and aVF giving rise to ST segment elevation, mimicking ST elevation myocardial infarction.
Atrial Repolarization Waves ([T.sub.a]) Mimicking Inferior Wall ST Segment Elevation Myocardial Infarction in a Patient with Ectopic Atrial Rhythm
T peak is a marker of epicardial repolarization while T end is believed to represent completion of repolarization of the mid-myocardial cells.
Electrocardiographic Analysis of Repolarization Changes in South Indian Children with Kawasaki Disease after the Acute Phase of Illness
Using specific formulations of [Na.sup.+], [K.sup.+], and [Ca.sup.2+] currents based on the experimental data recorded from human atrial myocytes, along with representations of pump, exchange, and background currents, the model is computationally efficient and correctly replicates physiologically repolarization process.
Simulation of Atrial Fibrosis Using Coupled Myocyte-Fibroblast Cellular and Human Atrial Models
The QT interval on the surface ECG is a composite of ventricular activation (QRS) and completion of repolarization (end of the T wave) as well as the net effect of these forces reaching the body surface [15].
Value of the New Spline QTc Formula in Adjusting for Pacing-Induced Changes in Heart Rate
QTc = QT/[[square root of RR].sup.1/2] Repolarization parameters analyzed from QT measurements were:
Profile of the cardiac repolarization in cervical spinal cord injury subjects performing physical exercise/Perfil da repolarizacao cardiaca de sujeitos com lesao medular cervical submetidos a exercicios fisicos
Identifying Drug-Induced Repolarization Abnormalities from Distinct ECG Patterns in Congenital Long QT Syndrome.
Classification of normal and arrhythmic ECG using wavelet transform based template-matching technique
QT interval which is the time interval between beginning of Q wave and end of T wave represents electrical depolarization and repolarization of ventricles.
Torsade de Pointes Induced by Hypokalemia from Imipenem and Piperacillin
Further details such as QT interval prolongation and functional AVB due to prolonged ventricular repolarization were accurately diagnosed by fetal magnetocardiography (fMCG).
Prenatal Diagnosis of Atrioventricular Block and QT Interval Prolongation by Fetal Magnetocardiography in a Fetus with Trisomy 18 and SCN5A R1193Q Variant

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