attack

beat

blood

cardiac

cardiogram

cardiology

care

clinic

digital

display

ecg

ekg

electrocardiogram

electrocardiograph

electronic

emergency

equipment

frequency

graph

graphic

health

healthy

heart

heartbeat

hospital

illness

instrument

life

lifeline

line

loop

medical

medicine

modern

monitor

patient

pressure

pulsating

pulse

rate

rhythm

screen

signal

status

stress

survival

technology

test

treatment

wave