IPA: /nɒnˈkɑːdiæk/
KK: /nɑnˈkɑrdiæk/
Not related to the heart or its functions.
The patient was diagnosed with a noncardiac condition that required different treatment.
Noncardiac → It is formed from "non-" (meaning not) and "cardiac" (from Greek "kardiakos", meaning related to the heart). The word "noncardiac" refers to conditions or issues that are not related to the heart.
Think of 'non-' meaning 'not' and 'cardiac' relating to the heart — so noncardiac means something that is not related to the heart.