Read aloud letter-by-letter (ài-sī-yōu) in English, as in Chinese medical settings the English abbreviation itself is the standard label. Chinese name: 重症监护室 (zhòngzhèng jiānhùshì).
culture
The Gen Z phrase 喜大普奔ICU jokes aside, 'ICU' also shows up in internet slang 笑到进ICU ('laughed so hard I ended up in the ICU') for extreme reactions.