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What does QRS stand for? 

What does QRS mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: QRS.

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QRS

Shall I send more slowly?

Academic & Science » Amateur Radio

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QRS

Send More Slowly

Academic & Science » Amateur Radio

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QRS

Quadralink Rear Suspension

Miscellaneous » Automotive

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QRS

Quasi-Random Signal

Academic & Science » Electronics

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QRS

Quantronic Resonance System

Academic & Science » Electronics -- and more...

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QRS

Equation Editor support file (WordPerfect for Win)

Computing » File Extensions

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QRS

Quattro Rocket Science

Business » Companies & Firms

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QRS

Quality Review System

Business » General Business

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QRS

Quality Real Service

Medical » Human Genome

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QRS

Quick Response Service

Medical » Hospitals

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QRS

Quantitative Restrictions

Business » International Business

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QRS

Qos Routing Simulator

Computing » IT

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QRS

Quick Response System

Medical » Laboratory -- and more...

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QRS

Quick Response Squad

Governmental » Law & Legal -- and more...

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QRS

Quick Reaction Strike

Governmental » Military

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QRS

Send More Slowly (not an acronym)

Miscellaneous

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QRS

Quick-Reaction Sortie

Governmental » NASA

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QRS

Quantitative Risk Specialist

Business » Occupation & Positions

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QRS

Quick Release Spool

Miscellaneous » Unclassified

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QRS

Quick Release System

Miscellaneous » Unclassified

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QRS

Quick Reference Subject

Miscellaneous » Unclassified

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QRS

Quiet Resource Study

Miscellaneous » Unclassified

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QRS

Quick Reference Sheets

Miscellaneous » Unclassified

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QRS

Quiet Rotary Screw

Miscellaneous » Unclassified

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QRS

QuickTest Recovery Scenario

Miscellaneous » Unclassified

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What does QRS mean?

qrs
The QRS complex is the combination of three of the graphical deflections seen on a typical electrocardiogram (ECG or EKG). It is usually the central and most visually obvious part of the tracing. It corresponds to the depolarization of the right and left ventricles of the heart and contraction of the large ventricular muscles. In adults, the QRS complex normally lasts 80 to 100 ms; in children it may be shorter. The Q, R, and S waves occur in rapid succession, do not all appear in all leads, and reflect a single event and thus are usually considered together. A Q wave is any downward deflection immediately following the P wave. An R wave follows as an upward deflection, and the S wave is any downward deflection after the R wave. The T wave follows the S wave, and in some cases, an additional U wave follows the T wave. To measure the QRS interval start at the end of the PR interval (or beginning of the Q wave) to the end of the S wave. Normally this interval is 0.08 to 0.10 seconds. When the duration is longer it is considered a wide QRS complex.

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