| QR | quality review; quantity is correct [Lat. quantum rectum]; quieting response; quinaldine red |
|---|---|
| qr | quadriradial; quantity is correct [Lat. quantum rectum]; quarter |
| QRB | Quality Review Bulletin |
| QRM | quality and resource management |
| 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-ST | the junction between the QRS complex and the ST segment in the electrocardiogram [junction] |
| QRS-T | the angle between the QRS and T vectors in vectorcardiography [angle] |
| QRZ | wheal reaction time [Ger. Qaddel Reaktion Zeit] |
| QR | NAD(P)H-quinone oxidoreductase |
|---|---|
| QR | Quinone reductase |
| QRA | Quantitative Risk Assessment |
| QRDR | quinolone resistance determining region |
| QRS D | QRS duration |
| QRT-PCR | Quantitative reverse transcriptase-polymerase chain reaction |
| QRT-PCR | Quantitative reverse transcription polymerase chain reaction |
| QR | <abbreviation> Origin: L quantum rectum, however much is correct. (05 Mar 2000) |
|---|---|
| QRS complex | <cardiology> The deflections in an electrocardiographic tracing and represent ventricular activity of the heart. (13 Nov 1997) |
| QRS interval | The duration of the QRS complex in the electrocardiogram. (05 Mar 2000) |
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| QRST complex |
Q-T interval.
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|---|---|
| QRST interval |
The ventricular complex of the electrocardiogram. SEE: electrocardiogram for illus.
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| QRS c. |
the portion of the electrocardiogram comprising the Q, R, and S waves, together representing ventricular depolarization. See also electrocardiogram.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| QRS i. |
in electrocardiography, the interval from the beginning of the Q wave to the termination of the S wave, representing the time for ventricular depolarization. See also illustration at electrocardiogram.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| QRST i. |
in electrocardiography, the time from the beginning of the Q wave to the end of the T wave; it represents the duration of ventricular electrical activity. See also illustration at electrocardiogram.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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