Monitors & Data interpretation

Question 1

Periop monitoring standards

Answer 1

AANA
Ventilation, O2, CV, body temp continuously
Patient positioning, neuromuscular fxn PRN

Question 2

O2 monitoring

Answer 2

2 light emitting diodes (LED), light detector (photocell)

placed on any perfused tissue

Question 3

O2 calculation based on

Answer 3

Beer-Lambert Law; oxygenated & reduced hemoglobin differ in absorption of red/infrared light

Question 4

Absorbs more Infrared light

Answer 4

oxyhemoglobin (HbO2)

940-990 nm wavelength

Question 5

Absorbs more Red Light

Answer 5

Deoxyhemoglobin

660 nm wavelength

Question 6

SpO2 > 90% means PaO2 is _____

Answer 6

above 60

Question 7

Oxyhemoglobin dissociation curve – small drops in saturation correspond to ____

Answer 7

large drops in PaO2

Narrow Range of safety

Question 8

PaO2 is: 
10
20
30
Then SpO2 is:

Answer 8

13
35
57

Question 9

PaO2 is: 
40
50
60
Then SpO2 is:

Answer 9

75
83
90

Question 10

PaO2 is: 
70
80
90
Then SpO2 is:

Answer 10

93
95
96

Question 11

Exists in smokers/urban pollution areas, falsely elevated readings on Pulse Ox

Answer 11

Carboxyhemoglobin (COHb)

Question 12

Late sign of caboxyhemoglobin toxicity

Answer 12

cherry red appearance

Question 13

Oxidated product of hemoglobin that forms reversible complex w/ O2 and impairs unloading of oxygen to tissues

Answer 13

methemoglobin (metHb)

Question 14

SpO2 Reading of someone with methemoglobin

Answer 14

85% no matter what - even if SpO2 is higher or lower

Question 15

Treatment for methemoglobinemia

Answer 15

Methylene blue

Question 16

Gold standard for ETT placement

Answer 16

capnography

Question 17

Normal EtCO2

Answer 17

35-45 mmHg

Question 18

Normal Waveform: A-B

Answer 18

Baseline

Question 19

Normal Waveform: B-C

Answer 19

Expiratory Upstroke

Question 20

Normal Waveform: C-D

Answer 20

Expiratory Plateau

Question 21

Normal Waveform: D

Answer 21

End-Tidal Concentration

Question 22

Normal Waveform: D-E

Answer 22

Inspiration

Question 23

MAP Equation

Answer 23

(SBP + 2DBP)/3

Question 24

Most of myocardial perfusion occurs during

Answer 24

Diastole

Question 25

Diastole represents

Answer 25

LV Relaxation, ventricular filling

Question 26

Systole represents

Answer 26

myocardial oxygen consumption/demand
peak pressure w/in vasculature
Ventricular contraction

Question 27

how often to measure NBP?

Answer 27

q3-5min

Question 28

NBP cuff should be _____ of circumference of limb with a length that is _______ of circumference

Answer 28

40-50% of circumference of limb with a length that is 80-100% of circumference

Question 29

Too small NBP cuff

Answer 29

falsely higher pressure

Question 30

too big NBP cuff

Answer 30

falsely lower