Electrical safety procedures Flashcards
What is (E). How is it measured?
Electromotive force-Difference in the charge between two points
-Measured in volts
What is (I). How is it measured?
Electric current-The flow of electrons.
- Measured in amps
- Push forward (current)
What is (R). How is it measured?
Resistance. Material’s tendency to resist the flow of electrons (current)
- Measured in Ohm’s
- Push back (resistance)
What is Ohms law?
E=I x R
What is MAP?
mean arterial pressure
MAP=COxSVR
Blood pressure in the vascular system is ________ to voltage
Analogous
The cardiac output (CO) is ______ to current
Analgous
SVR is ______ to the forces opposing the flow of electrons
Analgous
1/3 of the time we are in ______ and 2/3 of the time we are in _______
1/3=Systole
2/3=Diastole
Electrical power is measured in _____ and is the product of the ______ and the ______
- Measured in (watts)
- Product of the (voltage)
- and the (current)
W=E x I
W-electrical power
E-voltage
I-current
Dry intact skin has a resistance of ______
100,000 ohms
Electric shock can be divided into two categories _____ and ______
Macroshock and Microshock
What is macroshock?
Large amounts of current flowing through intact skin which can cause damage.
What is microshock?
Very small amounts of current that are dangerous because they are applied directly to the myocardium.
Currents as low as 80 microamperes when delivered through a central line can cause _______________ because all the current is concentrated in a small area. Can be dangerous to patients with pacemaker wires or saline filled central line.
ventricular fibrillation. That is actually 1/1000th the current that could cause fibrillation if applied externally.
