1. Reception and confirmation of identity:

– The technician or doctor in charge receives the patient and confirms his or her full name and date of birth, ensuring that they match the medical request and the file or registration number, if applicable

– Contraindications are reviewed, and if any are present, the test is not performed unless authorized in writing by the treating physician or approved by the laboratory medical director

2. Anthropometric measurements of weight and height will be carried out in accordance with what is established in other pulmonary function tests

3. Demographics:

– The patient’s age in years on the day of the test and other demographic data such as ethnicity are recorded

– The altitude of the region where the test is performed should be recorded for adjustments, if necessary

– These data are entered into the equipment data program

4. Additional information:

– Tobacco or vaping consumption, previous intense physical exercise and the use of inhaled bronchodilators are recorded

– The patient rests sitting for at least 10 minutes before the test

5. Instructions for the maneuver:

– The maneuver is explained in clear and easy language for the patient, ensuring that they understand each step

– The use of the nose clip is explained and the patient is instructed on the proper use of the mouthpiece

– Instructions include holding the mouthpiece with your teeth, without biting, sealing it with your lips around it, and avoiding inserting your tongue into the hole

– Place the patient in the correct position: sitting, with both feet resting on the floor, trunk upright and head slightly elevated (maintain this position throughout the maneuver)