No abstract available
MeSH terms
-
Aged
-
Blood Flow Velocity / physiology
-
Central Venous Catheters*
-
Hemorrhage / diagnosis*
-
Humans
-
Pilot Projects
-
Prospective Studies
-
Pulsatile Flow*
-
Respiration, Artificial
-
Vascular Access Devices
-
Venous Pressure / physiology*