Monitor II

Question 1

What range is temperature regulation lost?

Answer 1

74-82 ^oF

(24-28 ^oC)

Question 2

Conductor

Answer 2

Objects that have low resistance

Example: metal

Question 3

Capacitor

Answer 3

stores energy

Question 4

Conductance

Answer 4

G

(siemens)

= 1/R

Question 5

Current

Answer 5

Amps

(I)

amount of charge

Question 6

Ohm’s Law

Answer 6

V = I/R

Question 7

Insulators

Answer 7

substances with high resistance

Example: glass, porcelain, plastics, dry wood

Question 8

Dry skin

Answer 8

high resistance and poor conductor

Question 9

Resistance of electrode paste vs. implanted cardiac electrode

Answer 9

500 vs 10

Question 10

Fibrillation threshold in Macroshock

Answer 10

75-100 mA

(for 1 second applicaiton)

Question 11

macroshock

Answer 11

• intact skin
• application of shock to exterior skin
• large amount of current

Question 12

Microshock

Answer 12

• applied to myocardium
• can happen through pacemaker wires
• very small amounts of current
• fibrillation threshold 50uA

Question 13

Macroshock Thresholds

Answer 13

• 1mA - perception
• 10mA - “Let Go”
• 100-300mA - V-fib

Question 14

Microshock Thresholds

Answer 14

• 10 uA - maximum allowable
• 100uA - v-fib

Question 15

Factors of dangerous electrical currents

Answer 15

path

current

frequncy (worse between 50-60Hz)

Question 16

LIM

Answer 16

Line Isolation Monitors

Question 17

GFI

Answer 17

Ground Fault Interrupters

(reset button in area with water)

Question 18

Max leakage allowed in OR equipment

Answer 18

10 uA

Question 19

Capacitance

Answer 19

ability of a charge to induce an equal but opposite charge in nearby conductors

Question 20

Line Isolation Transformer

Answer 20

no direct connection to ground

each device is grounded on its own

Question 21

Ground Fault Interrupter

Answer 21

• required in wet locations
• monitors outflow and return of current
• disconnects circuit if a flow imbalance occurs

Question 22

Fetal oxygen sensor wavelengths

Answer 22

735 and 890 nm

Question 23

Warning Signs of Fetal Compromise

Answer 23

• contractions > 90sec
• relaxation between contracions < 60sec
• resting uterine tone above 20 mmHg
• peak pressure of contractions above 90 mmHg
  
  • (except during labor [2nd stage])

Question 24

Normal fetal heart rat

Answer 24

110-160 bpm

*If neonatal heart rate is bradycardic (like 60bpm), start chest compressions

Question 25

At what time is the fetal heart rate controlled by the PNS?

Answer 25

after 26 weeks

Question 26

Abnormal bradycardia in newborns

Answer 26

< 100 bpm

Question 27

abnormal tachycardia in newborns

Answer 27

> 180 bpm

Question 28

normal beat-to-beat- variability

Answer 28

5-25 bpm

Question 29

what pH represents spontaneous acceleration?

Answer 29

7.25

Question 30

Early decelerations

Answer 30

• Good
• caused by head compressions
• pattern is symmetrical with uterine contractions

Question 31

Late Decelerations

Answer 31

• repetitive (3+
• more ominous when associated with minimal variability
• may indicate fetal hypoxia and acidosis
  
  • ph < 7.25

Question 32

Treatmet for late Decelerations

Answer 32

• LUD
• stop oxytocin
• increase IV fluids
• 100% oxygen

Question 33

Normal Fetal scalp blood gases

Answer 33

• pH = 7.25-7.35
• SO₂ = 30% - 50%
• PO₂ = 18-22 mmHg
• PCO₂ = 40-50 mmHg

Question 34

APGAR

Answer 34

Appearance

Pulse

Grimace

Activity

Respiration

Question 35

Normal APGAR score

Answer 35

8-10