This is a poster snapped in my cardiologist’s (actually, electrophysiologist’s) office. These are all machines that are put into your heart to track its beating and alter that rhythm with electrical pulses. There’s a QR code on the poster linking to HeartDeviceAnswers.com, which has cute little animations done in the same mid-century-ish art style showing the kinds of devices at work, either zapping hearts that have gone all twitchy or recording and raising alerts for hearts that have started doing the wrong sort of rhythms altogether.
What strange things hearts are.