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open-heart surgery

noun [U]
 
 
/ˌəʊ.pən.hɑːtˈsɜː.dʒər.i/ US  /ˌoʊ.pən.hɑːrtˈsɜːr.dʒɚ-/

Definition

a medical operation in which the body is cut open and the heart is repaired, while the body's blood is kept flowing by a machineSurgery
(Definition of open-heart surgery noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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