WITH CORRECT ANSWERS
depolarization - CORRECT ANSWERS-- inside of cell becomes positive,
outside negative
- contraction
- na+ channel opens
- ELECTRICAL
repolarization - CORRECT ANSWERS-movement of cells = inside is negative
again
- na+ channels close, k+ channels open
- MECHANICAL
heart block 2nd deg type I
- rate
- rhythm
- p waves
- pr interval
- qrs complex - CORRECT ANSWERS-rate
- atrial faster than ventricular rate
rhythm
- irregular
p waves
- not every p wave has a wrs following
pr interval
- longer, longer, longer, drop
qrs complex
- narrow
heart block 2nd degree type II
- rate
- rhythm
- p waves
- pr interval
- qrs complex - CORRECT ANSWERS-rate
- atrial rate (p) faster than ventricular rate
, rhythm
- irregular
p waves
- some p waves not followed by qrs
pr interval
- constant interbal
qrs complex
- narrow, intermittently absent
- REG P WAVES, IRREG R WAVES (measure r to r intervals)
- more p waves than qrs
- dropped qrs
3rd deg heart block
- rate
- rhythm
- p waves
- pr interval
- qrs complex - CORRECT ANSWERS-rate
- normal or abnormal
rhythm
- regular
p waves
- no relationship to qrs complexes (p's march on)
pr interval
- variable; p wave dependent of qrs
qrs complex
- narrow or wide
symptomatic heart block tx - CORRECT ANSWERS-ACLS bradycardia
- atropine
- transcutaneous pacing
- dopamine
- epinephrine
- rate
- rhythm
- p waves