ANSWERS GRADED A+
✔✔Supraventricular foci - ✔✔Central points of origin of dysrhythmias, which are located
above the level of ventricles in the atria
✔✔Ventricular focus(foci) - ✔✔A displaced point of origin for a dysrhythmia that is in the
ventricles
✔✔Sinus rhythms - ✔✔Cardiac rhythms in which the pacemaker is the sinoatrial node
✔✔Atrial (Supraventricular) rhythms - ✔✔Dysrhythmias in which the pacemaker is in the
atria above the level of the ventricles (Supraventricular) area.
✔✔Ventricular rhythms - ✔✔Cardiac dysrhythmia in which the pacemaker is in the
ventricles rather than in the SA node
✔✔Arrest rhythms - ✔✔Cardiac rhythms in which there is a cardiac arrest. Some arrest
rhythms such as pulseless ventricular tachycardia are accompanied by a rhythm
display, but there is no contraction
✔✔Rate of firing in the SA node - ✔✔60-100
✔✔Rate of firing in the atria - ✔✔60-80
✔✔Rate of firing in the AV node - ✔✔40-60
✔✔Rate of firing in the ventricles - ✔✔20-40
✔✔Normal sinus rhythm - ✔✔Regular rhythm with a rate of 60-100 bpm. Has P waves,
QRS complex and T wavs
✔✔Sinus arrhythmia - ✔✔Similar to normal sinus rhythm but with slight variation in rate
with inspiration and expiration
✔✔Sinus bradycardia - ✔✔Similar to normal sinus rhythm except a slower rate of less
than 60 bpm
✔✔Sinus tachycardia - ✔✔Similar to normal sinus rhythm except for an increase in rate
of greater than 100 bpm but usually less than 150 bpm
✔✔Atrial and superventricular rhythms - ✔✔Those above the level of the ventricles