Prehospital index: A scoring system for field triage of trauma victims

Adult prehospital scoring systems: a critical review

“…Similar to previous studies, the PHI had a high sensitivity for mortality (98%). The sensitivity for emergency surgery at 24 h was 59% and 71% for emergency surgery within 4 h. Not surprisingly, the false negative rate (number of patients with PHI < 4 who were subsequently defined as having major trauma) was much higher (18.9%) than that found by Koehler (1986;4.6%; prospective data set), an inevitable consequence of selecting only patients with an ISS > 15. Bond et al (1997) prospective comparative study comparing the PHI against the PHI combined with mechanism of injury (MOI) criteria.…”

“…The Prehospital Index (PHI) was developed by Koehler et al (1986). The PHI is a four-component, coded, physiologically based scoring system, the four components being: systolic blood pressure; heart rate; respiratory status; and conscious level (Table 6).…”

Selection bias found in interpreting analyses with missing data for the prehospital index for trauma

“…Measures of trauma severity, such as the Prehospital Index (PHI) [6] and the Revised Trauma Score [7], are used both as triage tools and in trauma research. Research uses include calculating summaries of the types of patients that are transported to the various levels of care, and tracking changes in patient condition over time.…”

“…Anatomic scales are obtained from physical examination, investigative procedures, surgical interventions, and, in fatal cases, postmortem examination, so cannot typically be used for triage. Physiologic scales [7,23], including the PHI [6,24], measure the acute response to injury. Physiologic scales can be used for triage, because, in principle, all data may be quickly collected at the scene of the injury.…”

Long-Term Evaluation of Prehospital Trauma Patient Triage in a Large Urban Area*

“…In 1986, Koehler et al developed the Prehospital Index (PHI) for the prehospital triage of trauma patients [14]. This index was validated in several multicenter studies [15][16][17][18][19].…”