Pulse-Pressure / Stroke-Volume Variation
Pulse-pressure / stroke-volume variation: (max - min) / mean x 100 over a respiratory cycle.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Variation type
- Pulse-pressure variation (PPV, mmHg)
- Maximum value
- 50
- Minimum value
- 40
Result: Pulse-pressure variation 22.2% (max 50 / min 40 mmHg): > ~13% -- suggests fluid responsiveness (regular rhythm, controlled ventilation, adequate tidal volume).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Threshold
- PPV above about 13% (SVV above about 12%) predicts responsiveness -- only with a regular rhythm, controlled ventilation, and adequate tidal volume.
What you enter
- Variation type
- Maximum value
- Minimum value
How this is calculated
- Formula
- variation = (max - min) / ([max + min] / 2) x 100 over a respiratory cycle.
Michard F, Boussat S, Chemla D, Anguel N, Mercat A, Lecarpentier Y, Richard C, Pinsky MR, Teboul JL. Relation between respiratory changes in arterial pulse pressure and fluid responsiveness in septic patients with acute circulatory failure. Am J Respir Crit Care Med. 2000;162(1):134-138. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.