diastolic pressure variation
Also written as: DPV — Diastolic Pressure Variation
The cyclical change in diastolic arterial pressure during mechanical ventilation, used as an indicator of fluid responsiveness.
Full Definition
Diastolic pressure variation (DPV) refers to the difference between maximum and minimum diastolic pressures during one respiratory cycle in mechanically ventilated patients. It serves as a dynamic indicator of preload responsiveness, with variations greater than 5 mmHg suggesting fluid responsiveness. During cardiac anesthesia, DPV helps guide fluid management decisions, particularly when static measures like central venous pressure may be unreliable. The measurement requires adequate tidal volumes and absence of spontaneous breathing efforts for accuracy.
Usage
Usage note: Requires mechanically ventilated patients with adequate tidal volumes for reliable measurement.
In Context
- "Diastolic pressure variation of 8 mmHg indicated the patient would benefit from additional fluid administration." — Anesthesia record
- "DPV monitoring guided our fluid resuscitation strategy during the rewarming phase." — Case presentation