ECGS MADE EASY 5TH EDITION COMPREHENSIVE SOLVED QUESTIONS AND COMPLETE ANSWERS

ECGS MADE EASY 5TH EDITION
COMPREHENSIVE SOLVED QUESTIONS AND
COMPLETE ANSWERS

◉ atrioventricular node.
Answer: A group of cells that conduct an electrical impulse through
the heart; located in the floor of the right atrium immediately behind
the tricuspid valve and near the opening of the coronary sinus;
delays the electrical impulse in order to allow the atria to contract
and complete filling of the ventricles


◉ augmented limb lead.
Answer: Leads aVR, aVL, and aVF; these leads record the difference
in electrical potentioal at one location, relative to zero potential
rather than relative to the electrical potential of another extremity


◉ automaticity.
Answer: ability of a cardiac msucle pacemaker cells to
spontaneously initiate an electrical impulse without being
stimulated frmo another source (such as a nerve)


◉ axis.

, Answer: imaginary line joining the positive and negative electrodes
of a lead


◉ baseline.
Answer: straight line recorded on electrographic paper when no
electrical activity is deteceted


◉ biphasic.
Answer: Waveform that is partly positive and partly negative


◉ bipolar limb lead.
Answer: an ecg lead consisting of a postive and negative electrode


◉ bradycardia.
Answer: heart rate slower than 60 BPM


◉ bundle of HIS.
Answer: Fibers located in the upper portion of the interventricular
septum that receive an electrical impulse from the AV node and
conduct the impulse to the right and left bundle branches


◉ complex.
Answer: several waveforms