Having played the US version, I found this game to be very good.
It's actually not trying to be Trauma Center, as this game came out in 2004 in Japan and is the second in the series.
The first being ,Kenshuui Tendo Dokuta, only released in Japan, and therefore only in Japanese and isn't as good as Lifesigns.
Where as Trauma Centrer was puzzle based, Lifesigns is more a Doctor RPG.
While choosing which nurse to take out on a date, you get to perform actual medical procedures for real conditions, not a fictional virus.
If you want a more "real" doctor game, get Lifesigns, if you prefer puzzles, get Trauma Center.