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The “Torrstick”: A ruler calibrated in millimeters of mercury for measurement of hydrostatic pressure

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Abstract

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.

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References

  1. Weast RC, ed. CRC Handbook of Chemistry and Physics, 67th ed. Boca Raton: CRC Press, 1986, Tables D-231, 250, 251, 253, F100

    Google Scholar 

  2. Ramsey M III. Pressure transducer calibration. In: Proceedings AAMI Twelfth Annual Meeting. Arlington, VA: Association for the Advancement of Medical Instrumentation, 1977

    Google Scholar 

  3. Verweij J, Kester A, Stroes W, et al. Comparison of three methods for measuring central venous pressure. Crit Care Med 1986;14:288–290

    Google Scholar 

  4. Gravenstein JS, Paulus DA. Monitoring Practice in Clinical Anesthesia. Philadelphia: Lippincott, 1982:45–47

    Google Scholar 

  5. Warren JV. The physiology of the giraffe. Sci Am 1974;231:96–100, 105

    Google Scholar 

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Block, F.E., Schulte, G.T., Morris, T. et al. The “Torrstick”: A ruler calibrated in millimeters of mercury for measurement of hydrostatic pressure. J Clin Monitor Comput 8, 136–138 (1992). https://doi.org/10.1007/BF01617433

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  • DOI: https://doi.org/10.1007/BF01617433

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