rx lab practical 1 ecg stuff

ONLY BP HR manual and KNOW THE EQUATIONS FOR WRITTEN 

 AND ECG manual and written 

be able to find enlargement and hypotrophy

memorize boxes?

know if ekg looks abnormal

study the worksheets she gave back

flow of blood in heart

sa to av → bundles (r to l) → fasicles → purjunke fibers

movement of positively charged ions across cell

membrane

Depolarization

reverse flow of ions (i.e., cell becomes more

negative)

Repolarization

EKG measures the _______ flow of electricity

average

atrial depolarization is what wave

P Wave

ventricular depolarization is what wave

QRS Complex

ventricular repolarization is what wave

T Wave

PR Interval

the time from

start of atrial depolarization to

start of ventricular

depolarization

PR Segment

the time from

end of atrial depolarization to

the start of ventricular

depolarization

QT Interval

the time from the

start ventricular depolarization

to the end of ventricular

repolarization

1 small box

↕ = 0.1 mV

↔ = 0.04 sec

1 large box

(5×5 small boxes)

↔ = 0.2 sec

maybe learn box methods (come back to this)

Rules for naming the QRS Complex:

• The first upward deflection is called an R

wave

• The first downward deflection following

an upward deflection is called an S wave

• If there is a second upward deflection, it

is called R’

• If the entire wave is just a downward

deflection, it’s called a QS wave

• If the first deflection is downward but

followed by an upward deflection, it is

called a Q wave

10 Electrodes making up __ leads

12

6 Extremity (Limb) Leads

I, II, III, aVR, aVL, aVF

6 Precordial (Chest) Leads

V1-V6

figure out transitional zones

go over second powerpoint