TY - GEN AU - Grassi,P AU - Lo Nigro,L AU - Battaglia,K AU - Barone,M AU - Testa,F AU - Berlot,G TI - Pulse pressure variation as a predictor of fluid responsiveness in mechanically ventilated patients with spontaneous breathing activity: a pragmatic observational study SN - 2037-0504 PY - 2013///0726 N1 - Publication Type: Journal Article ER -