ECG

1st Degree Heartblock characteristics?

A DELAY: Characterized by a prolonged PR interval >0.20

There is still a 1:1 ratio for p waves/QRSs

2nd degree heart block Type 1 Mobitz 1 Wenkebach characteristics

Longer, longer, longer, drop. Now you have a Wenkebach!

PRI progressively gets longer until QRS is dropped

2nd degree heart block Type 2 mobitz 2 characteristics

PRI is steady (but wide) until QRS is dropped

3rd degree complete heart block characteristics

Never getting back together!

No relationship between the P waves and QRS complexes

More Ps than QRSs

Atrial rhythms characteristics

abnormal P waves or flutter

PACs characteristics?

Narrow QRS

resets underlying rhythm to synchronize with the premature beat

PJCs characteristics?

narrow qrs

does not reset the underlying rhythm to synchronize with premature beat

PVCs characteristics?

wide bizarre QRS

no P wave

Supraventricular Tachycardia SVT characteristics?

Normal QRS

150-250 bpm

regular rhythm

Junctional rhythm characteristics

The P wave is messed up. (absent, inverted, happens after the qrs, short PRI)

QRS narrow

HR 40-60

junctional bradycardia

HR under 40

The P wave is messed up. (absent, inverted, happens after the qrs, short PRI)

QRS narrow

Accelerated junctional

Missing p waves or messed up

HR 60 - 100

junctional tachycardia

HR over 100

p waves missing or messed up

rhythm regular

ventricular rhythms characteristics

HR very slow 20-40

no p wave

wide qrs

PVC

wide bizarre qrs

no p wave

Ventricular Tachycardia

Tombstones

Wide QRSs

no p waves

regular rhythm

HR: 150 - 250?? maybe lower

Polymorphic V tach

Torsades de points

Ventricular Fibrillation

no QRS just little fibrillations along the isoelectric line

idioventricular rhythm

WIDE QRS

no p waves

rhythm is regular

Under 40 BPM

accelerated idioventricular rhythm over 40 bpm

Asystole?

flatline or very small wiggles

Sinus rhythm vs junctional rhythm?

deflection and location of P wave

Sinus arrhythmia characteristics

rhythm irregular

rate 60 - 100

QRS and PRI are normal

The only thing that is different is the rhythm