Patient with nose clip breathing into spirometer mouthpiece while pulmonologist monitoring his lung function on computer screen

young, adult, people, caucasian, health, medicine, healthcare, male, procedure, man, nose, concept, office, doctor, two, device, monitor, exam, patient, test, indoors, clip, lung, take, checkup, diagnosis, examination, physician, clinic, diagnostic, mouthpiece, breathe, function, diagnostics, spirometer, healthcare worker, Medical Equipment, medical doctor, computer screen, Medical Examination, medical care, medical center, medical professional, Medical Practitioner, patient care, pulmonologist, Healthcare Professional, Medical Service, modern technology, spirometry,