Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
9 Cards in this Set
- Front
- Back
|
Criteria for AV blocks |
-PR interval prolonged (>0.20 secs) in some kind of sinus rhythm OR - some P waves not followed by QRS, P-P regular
|
|
|
First degree AV block What is it? |
-A prolonged PR interval due to a delay in the AV node’s conduction of sinus impulses to the ventricle. - all impulses get thru but are 1delayed - can be due to AV nose ischemia or other factors |
|
|
1st degree AV Block rate |
Can happen at any rate |
|
|
1st degree AV Block regularity |
Depends on underlying rhythm |
|
|
1st degree AV Block P waves |
Upright, matching, 1 P per QRS |
|
|
1st degree AV Block Intervals |
-PR prolonged (>0.20), constant - QRS <0.12 |
|
|
1st degree AV Block Cause |
3 causes -AV nose ischemia - digitalis toxicity -Med side effects (from beta blockers or calcium channel blockers) |
|
|
1st degree AV Block Adverse effects |
Usually none |
|
|
1st degree AV Block Treatment |
2 treatments - remove medication causing it - treat the cause |
