oxygen delivery systems

Respiratory Modalities:

Respiratory Modalities Karen Larson MBA/TM, MSN

Oxygen Therapy:

Oxygen Therapy Administration of oxygen at greater than 21% (the concentration of oxygen in room air) to provide adequate transport of oxygen in the blood, to decrease the work of breathing, and to reduce stress on the myocardium. Assess for signs and symptoms of hypoxia, arterial blood gas results, and pulse oximetry . Hypoxemia – decrease in the arterial oxygen content in the blood (ABG) Hypoxia – decreased oxygen supply to the tissues. (Pulse oximetery Oxygen administration systems

Classification of Oxygen Delivery Systems:

Classification of Oxygen Delivery Systems Low flow systems (with low flow systems the % of oxygen that actually reaches the lung varies with depth and rate of respirations) contribute partially to inspired gas client breathes do not provide constant FIO2 Ex: nasal cannula , simple mask, partial non- rebreather , non- rebreather High flow systems deliver specific and constant percent of oxygen independent of client’s breathing Ex: Venturi mask, trach collar, T-piece

Nasal Cannula:

Nasal Cannula Used for low-medium concentrations of O2 Simple Can use continuously with meals and activity Flow rates in excess of 4L cause drying and irritation Depth and rate of breathing affect amount of O2 reaching lungs

Simple Mask:

Simple Mask Low to medium concentration of O2 Client exhales through ports on sides of mask Should not be used for controlled O2 levels O2 flow rate- 6 to 8L Can cause skin breakdown; must remove to eat

Partial Rebreather Mask:

Partial Rebreather Mask Consists of mask with exhalation ports and reservoir bag Reservoir bag must remain inflated O2 flow rate - 8 to 10L Client can inhale gas from mask, bag, exhalation ports Poorly fitting; must remove to eat

Non-rebreather Mask:

Non-rebreather Mask Consists of mask, reservoir bag, 2 one-way valves at exhalation ports and bag Client can only inhale from reservoir bag Bag must remain inflated at all times O2 flow rate- 10 to 15L Poorly fitting; must remove to eat

Venturi Mask:

Venturi Mask Most reliable and accurate method for delivering a precise O2 concentration Consists of a mask with a jet Excess gas leaves by exhalation ports O2 flow rate- 4 to 15L Can cause skin breakdown; must remove to eat

T-piece:

T-piece Used on end of ET tube when weaning from ventilator Provides accurate FIO2 Provides good humidity