adrenaline

aorta

atrium

beat

beats

clinic

dark

deep

fear

frightening

heart

heart beat

heartbeat

heartthrob

horror

human

life

loop

loopable

monitor

multiple

pulsating

pulse

ominous

foreboding

pump

pumping

rhythmical

scared

tense

tension

throb

looped

hospital

sound

heart beating

pulsate