AND ANSWERS SURE A+
✔✔1st degree nodal block - ✔✔a _________ occurs when the heart is slowed to the
point where some impulses from the atria cannot pass through the AV node
✔✔aortic and pulmonary - ✔✔when the heart relaxes, which two valves close
✔✔valves - ✔✔which structures maintains controls of blood through the heart
✔✔parasympathetic - ✔✔what nerves may cause the heart rate to decrease
✔✔unipolar - ✔✔a _______ lead had an indifferent electrode at the center of the
Einthoven's triangle at a zero potential
✔✔limb - ✔✔leads 1, 2, and 3 are called the ______ leads
✔✔leads V1 and V2 - ✔✔which leads monitor electrical activity of the heart from the
anterior aspect, septum, and right ventricle
✔✔ the p wave should always be upright in leads 1 and 2 - ✔✔what would be
considered a cardinal feature of sinus rhythm?
✔✔U - ✔✔what is a small wave (similar to the P wave) that sometimes appears after
the T wave, and is thought to represent late repolarization of the Purkinje fibers in the
ventricles?
✔✔sick sinus rhythm - ✔✔a disturbance of SA nodal function that results in a markedly
variable rhythm is known as
✔✔atrial fibrillation - ✔✔what term best describes a cardiac condition that demonstrates
a sinus rate of 250 to 350 beats per minute
✔✔T - ✔✔which wave represents ventricle repolarization
✔✔ventricular tachycardia - ✔✔which of these ECG findings indicates a pulse greater
than 100 beats per minute with at least three irregular beats in a row
✔✔atrial depolarization - ✔✔the p wave is indicative of
✔✔premature atrial contraction with pvcs - ✔✔what best describes this rhythm strip
✔✔trigeminy pvcs - ✔✔what best describes this rhythm strip