Exam 4 Electrical Safety -OR

Question 1

Current

Answer 1

Flow of electrically charged particles (electrons)

Question 2

Circuit

Answer 2

Electrons flow around a closed path

Question 3

2 types of circuits:

Answer 3

Direct current (DC) : parallel and series
and Alternating Current (AC)

Question 4

In Direct Current (DC) –>

Answer 4

flow of current in one direction

Question 5

In Alternating Current (AC) –>

Answer 5

electron flow switches direction at regular intervals 120 times per second

Question 6

Voltage (V)

Answer 6

pressure behind electrons

Question 7

Amps (I)

Answer 7

Current: number of electrons flowing past a given point per unit of time

Question 8

Ohms (R)

Answer 8

Reistance to the flow

Question 9

In the water flowing through a pipe analogy: Water pressure is the_______, Pipe is the _______and the
Water in the tube =

Answer 9

voltage
ohms resistance
Ampage

Question 10

Ohm’s Law

Answer 10

Voltage = Current x Resistance
V = I x R

Question 11

BP

Answer 11

CO x SVR

Question 12

Capacitance

Answer 12

Stores charge (electrons)

Question 13

A capacitors consists of

Answer 13

any 2 parallel conductors that are separated by an insulator.

Question 14

Capacitive coupling

Answer 14

occurs in the presence of a capacitor and is created when 2 conductors are separated by an inuslator. may occur during laparoscopic procedure.

Question 15

Electricity

Answer 15

may cause burn or Vfib

Question 16

DC

Answer 16

more dangerous

Question 17

Macroshock

Answer 17

large current flows that can cause harm

Question 18

Microshock

Answer 18

small amount of current flow only dangenous

100 microamps –> Vfib

Question 19

1 mA
5 mA
10
50
100(0.1A)

Answer 19

perception
maximal harmless current
"let go " current
Pain, LOC muscle lock
Vfib

Question 20

WHat happens at each current?
1 mA
5 mA
10
50
100(0.1A)

Answer 20

perception
maximal harmless current
"let go " current
Pain, LOC muscle lock
Vfib

Question 21

Maximum leakage allowed in OR

Answer 21

The maximum leakage 10 microamps.

Question 22

Use to supply sensitive equipment like medical devices

Answer 22

Isolation transformers.

Transfers electricity through a magnetic field (induction)

Question 23

Line Isolation Monitor

Answer 23

monitor Circuit

Question 24

Line isolation monitor purpose

Answer 24

safety device that monitor for leakage current from internal faults

Question 25

Alarms of line isolation

Answer 25

2-5 mA

Question 26

Electrocautery

Answer 26

Use low-voltage, high amperage, direct or alternating high frequency 0.1-3 mGhz electric current

Question 27

The element in Electrocautery is

Answer 27

HOT

Question 28

2 types

Answer 28

bipolar and monopolar

Question 29

Bipolar Bovie (electrocautery)

Answer 29

2 sides

Question 30

Grounding pad

Answer 30

place on the leg for monopolar

Question 31

Define electricity

Answer 31

The flow of electrons

Question 32

Define conductors

Answer 32

Any substance that permits the flow of electrons(or current)

Question 33

Define insulators

Answer 33

Any substance that prevents the flow of electrons