“I place my stethoscope onto their chest to listen for the lub-dub sound of the heart valves. Then I wait. I wait a long, silent, slow five minutes. I listen for silence and feel for the presence of absence. No sound is heard and no pulse is felt.” DeathDoctorsMedicineCriticalMedicalIcu Book:Critical: Science and Stories from the Brink of Human Life Source: Critical: Science and Stories from the Brink of Human Life