The best replacement for icu is ccu.

The best alternatives to icu are rated as following:
★★★★★  ccu
★★★★★  er
★★  er nurse
★★  med surg
★★  pcu
★  nicu
★  ccu worse
★  micu
★  pacu
★  critical care
★  iccu
★  icu
★  imu
★  itu
  trauma
  hdu
  gettext
  iconv
  med surg nursing
  ccu nursing
  imc
  telemetry
  acu
  hcm
  step down
  floor nursing
  surgical icu
  er nursing
  floor nurse
  acute care
  non icu
  emergency room
  critical care unit
  step down unit
  er nurses
  medical icu

Your alternative for icu is not listed? Suggest!
Speaking about icu, one probably shouldn't forget about xerces.

Other search terms related to icu and their ratings are:
★★★★★ xerces
You have in mind a companion for icu and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of icu in all years. Click on graph for more.
icu
ccu
er