Rate- Exam 1

*Sinus rhythm has a rate range of

60-100 bpm

*Sinus bradycardia has a rate of

less than 60 bpm

*SInus tachycardia has a rate of

more than 100 bpm

*QRS close together means

faster rate

*QRS far apart means

slower rate

*automaticity foci

extra or abnormal focus that can trigger a premature beat

*atrial

60-80 bpm, p wave, narrow QRS

*junctional

40-60 bpm, mat have p wave, narrow QRS

*ventricular

20-40 bpm, no p wave, wide QRS

*for each ladder ring you go down the heart

the rate slows by 20 bpm

*3 questions to ask when you look at EKG

What is my rate? Presence or absence of P wave? Is the QRS wide or narrow?

*If SA node fails what takes over

atrial focus than junctional, than so on of each fail

*first step in finding rate is

the R waves

*big block method

find R waves closest to the beginning of big block and count the big blocks to the next R wave, divide by 300

*triples method

find R waves count 300-150-100-75-60-50

*Q waves are typically how many blocks

2-3 small blocks

*6 second method

tick marks at the top 3 sec each. or count 30 big blocks. Count full cardiac cycles. Multiply by 10.