A new nurse is comparing 2nd degree AV heart block type 1 to 2nd degree AV heart block type 2 and knows that the main differences between the two are which of the following? Select all that apply.
a. The SA node initiated the impulse in both blocks
b. 2nd degree AV heart block type 2 has a normal PR interval and with occasional missed QRS
c. 2nd degree block drops the QRS
d. 2nd degree AV heart block type 1 has a progressively prolonged PR interval
e. 2nd degree AV block type 1 is deadly
b. 2nd degree AV heart block type 2 has a normal PR interval and with occasional missed QRS
d. 2nd degree AV heart block type 1 has a progressively prolonged PR interval
rationale: These are true characteristic differences between Type 1 and Type 2
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