We have designed and constructed a ruler ("Torrstick") calibrated in millimeters of mercury for the measurement of hydrostatic pressure differences. Marks are placed on a measuring stick every 1.34 cm, to afford the best compromise between a column of 0.9% saline solution and a column of blood. Several uses for this ruler are proposed, including the measurement of central venous pressure.
- Blood pressure, measurement
- Equipment: manometer
- Measurement techniques: manometry
- Monitoring: blood pressure; central venous
ASJC Scopus subject areas
- Critical Care and Intensive Care Medicine