ATS Pulmonary Function Laboratory Manual

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

Appendix 9.1  Checklist for Acceptable Test and Repeatability Criteria for Raw Measurements (7) 1. Use of equipment that has undergone quality control. 2. Proper positioning of patient, assuring mouthpiece and nose clip are positioned appropriately, with cheeks supported with fingertips. 3. Panting frequency between 1.5 to 2.0 pants/s with entire open- and closed-shutter loops displayed within calibrated range. 3.1 Open-shutter loops are linear, non-elliptical and closed (or nearly closed). 4. Adjustment of open shutter loops between +0.5 L/s and −0.5 L/s. 5. Closed shutter loops (for determining TGV) adjusted as center fit. 6. Perform at least four to five technically acceptable trials. 7. The average of at least four to five technically acceptable trials that agree within ≤ 10% of the mean value is reported. 8. Technologist’s quality statements about patient's understanding of test instructions, his/her level of partici- pation in testing process, and notation if the reported results do not comply with laboratory standardization criteria.

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