tɹˈɔːmə sˈɛntɚ: ˌʌndɚ ðə nˈaɪf tˈuː ɪz ðə fˈoːɹθ ˈɛntɹi, ɐ dᵻɹˈɛkt sˈiːkwəl tə ðə fˈɜːst ɡˈeɪm dɪvˈɛləpt fɚðə dˌiːˈɛs.
Trauma Center: Under the Knife 2 is the fourth entry, a direct sequel to the first game developed for the DS.