Oxygen Analysis

UTMB RESPIRATORY CARE SERVICES

PROCEDURE - Oxygen AnalysisPolicy 7.4.8

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Oxygen Analysis

Formulated: 12/02Effective:12/30/02

Reviewed:5/31/05

Oxygen Analysis

PurposeTo standardize reporting practice for monitoring oxygen concentration in gases delivered to a patient on mechanical ventilation or other devices that have built-in venture mechanisms. Calibration of ventilator oxygen analyzers occurs during the course of every OVP performed.

AudienceRespiratory Care Services monitors oxygen concentration by means of the R-24 cell incorporated in the Siemens 300 and 300A to assure the fraction of inspired oxygen delivered to a patient.

ScopeRegistered Respiratory Therapists may perform the oxygen analysis. A Therapist, Preceptor, or Respiratory Care Practitioner must verify all oxygen analyses performed by students.

Physician's Order All devices set to deliver oxygen concentrations greater than ambient levels have standardized Venturi mechanisms that deliver the FIO2 as it is dialed in on the device in use. Ventilators will be checked every 6 hours for compliance with physician's orders and/or after a change in ventilator parameters. Ambient devices may be checked every shift in the intensive care units and on a PRN basis in general care areas for patients on orders for Oxygen per Protocol.

These are standard operating procedures for the Respiratory Care Service and no physician's order is required for monitoring oxygen concentrations per se.

IndicationsOxygen concentrations are monitored so accurate correlations may be made between the concentration of inspired oxygen and the results of blood gas analysis or oximetry.

Contra-indicationsR-24 cells are used in ventilators used in the practice of respiratory care and may not be used in the presence of flammable anesthetics. (Note: the addition of alarms, switches and other such devices may produce a spark hazard. Consult manufacturers literature to identify devices suitable for operation in hazardous atmospheres).

Procedure

StepAction

1View the Oxygen Concentration Percent in the window above the Alarms and Messages Panel on the 300 and the 300A. The digital oxygen concentration display should agree with the FIO2 indicated on the control knob.

Procedure Continued

StepAction

2Record the analyzed FIO2 displayed in the digital readout on the ventilator rounds sheet.

3Monitor the oxygen saturation lf patients on Venturi mechanisms and low flow devices to establish adequacy of oxygenation.

4Record findings on RCS patient flow sheet.

ReferencesSiemens 300I and 300A Service and Instruction Manual

AARC Clinical Practice Guidelines; Respiratory Care 2002; 47(7): 717-720: Oxygen Therapy For Adults in the Acute Care Facility--2002 Revision and Update

AARC Clinical Practice Guidelines; Respiratory Care 2002: 47(7): 707-716: Selection of an Oxygen Delivery Device For Neonatal & Pediatric Patients-- 2002 Revision and Update

Scanlan, C., Sheldon, R., Spearman, C., Egan's Fundamentals of Respiratory Care, 8th Edition 2003

Ward JJ; Equipment for Mixed Gas and Oxygen Therapy, In: Barnes TA, Ed. Core Textbook of Respiratory Care Practice. 2nd edition. St. Louis: Mosby-Year Book; 1994.

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