ATS Pulmonary Function Laboratory Manual

ATS Pulmonary Function Laboratory Management & Procedure Manual | 3rd Edition

c. Slowly probes into the subcutaneous tissue on the sides of the artery, aspirating to ensure that the needle is not in the artery. Injects lidocaine into the periarterial tissue. d. Uses only a small amount of anesthetic (i.e., 0.5–1.0 ml) e. Waits 1 to 3 minutes for the anesthetic to become effective before doing the arterial puncture. 7. Properly positions patient’s arm and obtains sample. a. If heparin solution is used, withdraws a sufficient volume of arterial blood to minimize dilation effect of heparin. b. Uses towel or other prop under wrist (radial puncture). c. Positions patient's arm to create easy and comfortable access to sampling site. 8. Properly removes needle, and applies firm pressure for 3–5 minutes. a. Activate the needle safety feature immediately after specimen collection and discard. 9. Properly removes air, seals syringe, and mixes the specimen thoroughly. 10. Properly labels specimen and immerses in coolant, if applicable. 11. Promptly completes test-request form and transports specimen to lab. 12. Properly disposes of barrier protection and washes hands. 13. Properly documents in patient chart: a. Time sample obtained b. Puncture site and number of attempts c. Results of Allen test d. O 2 liter flow, and/or ventilator settings at time of specimen collection

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