ECG RHYTHM LAB

Accessibility

Controls have labels, keyboard focus indicators and native dialog focus management. Icons are vector graphics. Waveform channels have text labels as well as colors. Pause and Freeze stop visible motion; reduced-motion preferences disable initial autoplay.

Tab moves focus; Enter or Space activates buttons; Escape closes dialogs. The main monitor has a skip link. Appearance, waveform and numeric values can be adjusted independently.

Canvas traces have accessible names, and the rhythm library provides text descriptions. Visual ECG recognition is not yet a fully equivalent nonvisual experience. Physical-device and screen-reader reviews remain outstanding; no WCAG conformance certification is claimed.