1. Typically, first-degree block results from excessive conduction delay in the: a. SA node          c. Internodal pathways b. AV node         d. Purkinje network 2. Lead II is the lead most commonly...

1. Typically, first-degree block results from excessive conduction delay in the:

a. SA node          c. Internodal pathways

b. AV node         d. Purkinje network

2. Lead II is the lead most commonly used in the prehospital arena because it:

a. Is easier to apply

b. Shows good T waves

c. Illustrates good P waves

d. Is faster to apply