Spirometer Diagram: Understanding Key Components for Lung Function Testing #268273 (License: Personal Use)

This technical illustration details a handheld spirometer, including the piston that moves in response to exhaled air, a graduated scale (250-2500 mL), a yellow indicator for visual feedback, a coach indicator with icons for guidance, and a flexible mouthpiece for patient use. The device is designed for measuring forced vital capacity (FVC) and forced expiratory volume in one second (FEV1). Labels are positioned for clarity, supporting clinical training and patient education.

Used on medical education websites, pulmonary clinic resources, or telehealth platforms to explain spirometry procedures to healthcare professionals and patients. Matches user intent for understanding diagnostic equipment, preparing for lung function tests, or training on respiratory assessment tools.