Oxygen Administration

Question 1

O2 + CORD = Potential Hypercarbia mechanisms =

Answer 1

reversal of hypoxic pulmonary vasconstriction, high levels of CO2 in poorly ventilated alveoli to diffuse back into circulation.
Decreased ventilatory drive
Decreased CO2, buffering capacity of HB
Absorption of CO2 from alveoli beyond obstructed airways.
The higher desity of O2 compaired with air causing increased work of breathing.
Signs of Increased CO2 = confusion, drowiness, agitation, < LOC

Question 2

Oxygen administration + Bleomycin tx or Paradquat poioning

Answer 2

only give to those <88% - Bleomycin is a chemotherapy drug and become sensitive to Oxygen.
Animal experiences = makes worse however in Humans -to give to ensure SPO2 : 94-97 %

Question 3

Cyanosis =

Answer 3

cyanosis is blue discolouration of skin or mucus membranes. Haemoglobin not having oxygen bound to it.
Cyanosis = < 80%

Question 4

Oxygen adminsitration = ??

Answer 4

An SPo2 <94% (except high risk and neonatal)
Airway Obstruction
Breathing - Respiratory Distress
Carbon Monoxide Poisioning
Decompression Illness
Shock
Severe traumatic Brain Injury
Smoke Inhalation
Sedation

Question 5

High Risk with Oxygen =

Answer 5

People who are CORD, Morbid Obesity, home O2, Neonates, Home CPAP or BIPAP
High risk also includes pt’s that may have Carbon Dioxide clearance

Question 6

Oxygen Flow Rates =

Answer 6

NP: 1-4 Lper Min
Simple Mask: 6-8 L per Min
Neb: 8 L per Min
Reservior Mask: 10-15 L per min
Manual Ven bag: 10-15 L per Min

Question 7

Oxygen Administration + Confined spaces

Answer 7

Only administer O2 in confined space if:

1. clinical indication is very strong
2. fire service present to monitor oxygen concentration keep under 24%.

Question 8

Oxygen Administration + CORD

Answer 8

titrate o2 flow - 88-92%

Question 9

Hypercarbia

Answer 9

*Reversal of hypoxic pulmonary vasoconstriction
causing high levels of CO2, in poorly ventiated alveoli to diffuse back into the circulation.
*Decreased ventilatory drive
*Decreased CO2 buffering capacity of haemoglobin
*Absorption of CO2 from alveoli beyond obstructed airways
*higher density of O2 compared to air causing increased work of breathing.
*

Question 10

Oxygen with Bleomycin Tx/Paraquat Poisoning

Answer 10

O2 will can cause severe lung inflamation and only use <88%

Paraquat - use to keep O2 94-97%.