11. Environmental specification

Use Environment

Professional healthcare environment (practices of primary care physicians, internal medicine doctors, cardiologists and hospitals)

Lighting

• Adequate lighting conditions preferred

• If insufficient lighting would result in low quality images, the app will automatically activate the smartphone flashlight

Sound/Noise (ambient and intermittent)

Ambient or intermittent due to colleagues and other patients being in adjacent rooms

Climate

No restrictions or specifications regarding the climate

Social environment, social interactions, work organization

• Colleagues or other patients might be in adjacent rooms or on the corridor

• Normal stress level (GPenvironment)

• Elevated stress level (Hospital-/EMSenvironment)

Typical equipment used (in conjunction with the medical device)/Connectivity

• Stable wireless internet connection (Wi-Fi or cellular)

• Available ECG printout or monitor that displays such

• iOS and Android smartphone

• 12-lead ECG recording in either digital form or paperform

Distractions and interruptions

• Noises or chatter from other treatment rooms

• Nurse or assistant entering the room

• Other patients knocking on door or asking a question

• Phone ringing

• Environmental noises