6 Resp Monitors

Question 1

Dynamic compliance eqn

Answer 1

TV / PP-PEEP

Question 2

Plateau pressure defn, when it inc risk for barotrauma

Answer 2

P in small airways and alveoli when tv delivered. When >35 cmh20

Question 3

Static compliance eqn

Answer 3

Tv / plateau pressure - peep

Question 4

Nml static compliance in adult v child

Answer 4

Adult: 35-100. Child: >15 ml cmh20

Question 5

Normal alpha angle, inc when

Answer 5

100-110 degrees. Inc= expiratory airflow obstruc, COPD, bronchospasm, kinked ett

Question 6

Beta angle: normal angle, when increased

Answer 6

90. Rebreathing, faulty uni valve, etc

Question 7

Lights/wavelengths in pulse ox waveform

Answer 7

Red light 660 nm deoxyhgb, near infrared 940 in oxyhgb

Question 8

Sp02 calc

Answer 8

Oxy hgb / (oxy hgb + deoxyhgb) x 100

Question 9

When spo2 measurement can be falsely low

Answer 9

When measured on head or esophagus and in tburg

Question 10

Sp02 % and pa02 Corel

Answer 10

Spo2 90, 80, 70= pao2 60, 50, 40

Question 11

How to calc alveolar 02

Answer 11

Fio2 x (PB -ph20) - paco2/rq

Question 12

Margin of error spo2

Answer 12

2-3% when b/w 70-100. When 50-70% 3%

Question 13

How methgb effects pulse ox

Answer 13

Underestimates spo2 if sat >85%, overestimates if 02 sat <85%

Question 14

How pulse ox effected by carboxyhgb

Answer 14

Reads sum of 02 hgb and co hgb, overestimates sp02