Body Fluids and Circulation — BIOLOGY STD 11 Science — Question
Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBody Fluids and Circulation1 Mark
Question
How will you interpret an electrocardiogram (ECG) in which time taken in QRS complex is higher?
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Answer
The QRS complex in an electro-cardiogram (ECG) represents ventricular depolarization, i.e., spread of impulse of contraction from atrio-ventricular node (AVN) to ventricles through Purkinje fibres and Bundle of His. Duration of normal QRS complex is less than 0.10 sec and the enlarged Q and R waves indicate myocardial infarction.
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