QRS complex
The deflections in an electrocardiographic (ECG or EKG) tracing that represent the ventricular activity of the heart.

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QRS complex n the series of deflections in an electrocardiogram that represent electrical activity generated by ventricular depolarization prior to contraction of the ventricles compare P WAVE, T WAVE

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the element of an electrocardiogram that precedes the S-T segment and indicates ventricular contraction.

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the portion of the electrocardiogram comprising the Q, R, and S waves, together representing ventricular depolarization. See also electrocardiogram.

Medical dictionary. 2011.

Look at other dictionaries:

  • QRS complex — noun a record of the measurement of the movement of electrical impulses through the lower heart chambers …   Wiktionary

  • QRS complex — the element of an electrocardiogram that precedes the S–T segment and indicates electrical activation of the ventricles …   The new mediacal dictionary

  • qrs complex — noun Usage: usually capitalized Q&R&S : the deflections in an electrocardiographic tracing that represent ventricular activity of the heart …   Useful english dictionary

  • QRS-анализ — QRS (возможно сокращение от англ. Quick Response System система быстрого ответа) анализ товарного ассортимента по необходимым инвестициям, авторская методика Романа Бодрякова. Не путать с термином «QRS комплекс» (QRS complex) из… …   Википедия

  • QRS — in electrocardiography, the complex consisting of Q, R, and S waves, corresponding to depolarization of ventricles [complex]; in electrocardiography, the loop traced by QRS vectors, representing ventricular depolarization [interval] * * * QRS kyü …   Medical dictionary

  • QRS-ST — the junction between the QRS complex and the ST segment in the electrocardiogram [junction] …   Medical dictionary

  • QRS-ST — • the junction between the QRS complex and the ST segment in the electrocardiogram [junction] …   Dictionary of medical acronyms & abbreviations

  • complex — 1. An organized constellation of feelings, thoughts, perceptions, and memories that may be in part unconscious and may strongly influence associations and attitudes. 2. In chemistry, the relatively stable combination of two or more compounds into …   Medical dictionary

  • QRS — • in electrocardiography, the complex consisting of Q, R, and S waves, corresponding to depolarization of ventricles [complex]; • in electrocardiography, the loop traced by QRS vectors, representing ventricular depolarization [interval] …   Dictionary of medical acronyms & abbreviations

  • ventricular premature complex — (VPC) an ectopic beat arising in the ventricles and stimulating the myocardium prematurely. It is characterized by an early, wide, oddly shaped QRS complex with an ST segment and T wave directed opposite to the QRS complex, usually without… …   Medical dictionary

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