week 3 Flashcards
There are two major types of oxygen delivery devices available for supplemental oxygen
LOW FLOW OXYGEN SYSTEM
HIGH FLOW OXYGEN SYSTEM
Low Flow Oxygen System
Nasal Cannula:
All age groups
1-5L/Min
Comfortable
Can dry mucous membranes
Low Flow Oxygen System
Hudson Mask:
6-8L/Min
Inexpensive
Comfortable
Low Flow Oxygen System
Non-Rebreather:
12-15L/Min
HighO2 Concentration
High Flow Oxygen System
Venturi Mask:
4-8L/Min
Provides Low levels of supplemental O2
Precise FiO2
Ventilation:
inspiration & expiration
Diffusion:
exchange of O2 & CO2 at the alveolar-capillary membrane
Perfusion:
blood flow through the pulmonary circulatory
V/Q ratio
determines the blood oxygen concentration. Air must reach the alveoli to be available for gas exchange. The blood must then reach the membrane to exchange carbon dioxide for oxygen. A balanced gas exchange depends upon an adequate V/Q ratio.
Oxyhaemoglobin Dissociation Curve shows the
relationship between pressure of oxygen and oxygen saturation levels, and how the blood carriers and releases. By affecting the curve to the left the bond between oxygen and haemoglobin is stronger. However if it is effected to the right, oxygen is released much easier.
Nasopharyngeal
needs lubricant to insert
Used for conscious and unconscious patients
-contraindicates (patients with facial injuries)
Measurements tip of the nose to the ear
Guedels airways
Insert it upside down, turn it 180 degrees
Measurements to incision to angle of jaw
UNCONSCIOUS PATIENTS ONLY
Gag refelex to conscious patients
Y-Suction catheter
can suction down with nasoprongs
small bits only can be used for babies
Single use only
Yanker sucker
good for suctioning bug bits such as blood, vomit
