Question | Answer |
---|---|
Regular P waves followed by QRS, rate 60 - 100 | Sinus Rhythm |
PR interval > .20 ; represents a slowing of conduction in the AV node | SR with 1st degree heart block |
PR interval widening with an occasional dropped QRS, usually not symptomatic | SR with 2nd degree heart block type I (wenkebach) |
PR interval > .20 but constant, usually 3:1 ratio and P wave not always followed by QRS complex | SR with 2nd degree heart block type II (mobitz) |
P-P constant, QRS constant, P is not followed by QRS in fact there is no correlation between P and QRS, "they do not talk"; usually symptomatic | 3rd degreee heart block |
QRS originates in AV node, QRS 40 -60 bpm, P wave may or may not be present | Junctional Rhythm (seen a lot in anesthesia) |
no P waves, comes from AV node rate >60 bpm | Accelerated Junctional rhythm |
Unable to get a PR interval, very irregular complexes, no p waves present | Atrial Fibrillation |
Saw tooth P waves present; QRS is regular; common 2:1 conduction | Atrial Flutter |
HR of 140 - 220; does not come from SA node buy the tissues around the AV node | Supraventricular Tachycardia |
HR 100-220 with wide bizarre QRS; can often lead to ventricular fibrillation | Ventricular tachycardia |
Failure of primary pacemaker, rate <40 bmp: this is the ventricles last ditch effort for cardiac output, QRS is wide and bizarre | Idioventricular Rhythm |
Which leads are the precordial leads? | V leads |
Which leads are the limb leads? | I,II, III |
Which leads are the augmented leads? | avf, avl, avr |
Which are the positive leads? | AvF, V3-6 |
Which are the negative leads? | Limb leads, and AvR |
When lead I is up and avf is down what type of axis deviation is it? | Left shift |
When lead I is down and avf is up what type of axis deviation is it? | Right shift |
When lead I is down and avf is down what type of axis deviation is it? | Extreme right shift |
Bundle Branch Blocks are seen in which leads? | I, V1, V6, and a QRS > .12 |
Right Bundle Branch Blocks are diagnosed how on EKG's | there is a R. S. R1 configuration in V1 |
Left Bundle Branch Blocks are diagnosed how on an EKG | I positive and wide, "bunny ears" seen in V6, but sometimes look like a notch in the QRS in V5 |
Anterior wall is supplied by what artery | LAD, seen best in V1-V4 |
What is the treatment for and anterior wall MI? | Start nitro, stop sx, increase 02, gas off, fentanyl, and watch fluid overload |
Lateral wall is supplied by which artery | LAD, or obtuse, seen in lead I, avl, V5-V6 |
Inferior wall is supplied by which artery | RCA, seen in leads II, IIIm abd avf |
how is a inferior wall MI treated | increase fluids, and get ready for dysrhythmias |
which wall is supplied by PDA and is seen as negative in leads V1 and V2 | posterior wall |