Use of the tilt test in measuring acute blood loss

Robert Knopp, Roger Claypool, Dave Leonardi

Research output: Contribution to journalArticlepeer-review

64 Scopus citations


We undertook to determine the accuracy of the tilt test in detecting acute blood loss. One hundred volunteers were phlebotomized a specific amount of blood (Group I, 450 cc; Group II, 1,000 cc In 500 cc increments). Orthostatic vital signs were recorded at timed intervals comparing the supine to sitting and supine to standing techniques. Using the criteria of pulse increase ≥ 30/min or severe symptoms, the supine to standing test accurately distinguished 1,000 cc blood loss from no blood loss in our population. The major value of the tilt test is detecting blood loss of 1,000 cc or more.

Original languageEnglish (US)
Pages (from-to)72-75
Number of pages4
JournalAnnals of Emergency Medicine
Issue number2
StatePublished - Feb 1980
Externally publishedYes


  • blood loss, measurement, tilt test
  • tests, tilt, acute blood loss


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