Outcome indicators: result variables

Our aim is to save lives, and to find out what makes a survivor.

Trauma mortality is thus the main result variable. Register death: yes/no. Also register:

  • Time of death (hours after injury)
  • Death on-site (before prehospital life support started): yes/no
  • Death during prehospital treatment: yes/no
  • In-hospital death: yes/no

Effect of prehospital life support

The aim of prehospital life support is temporary damage control, to stop physiological deterioration and even improve the physiological condition of victims. For this we compare physiological indicators on-site and again on hospital admission. RTS values are already registered at two points  as explanatory variables (PEKER). From this you can construct a new result variable:

  • RTS2 – RTS1. 
  • RTS2 ≥ RTS1 is considered good prehospital outcome.
  • RTS2 ≤ RTS1 can also be used to select the subset of patients who deteriorated despite life support provided. The management of every one of these patients should be scrutinized.

Postoperative sepsis

The probability of  postoperative bacterial wound infection mainly depends on the quality of primary surgical care. Still we should expect that good prehospital life support should helps reduce the rate of post-injury sepsis: bacterial wound infection and/or abscess formation and/or pneumonia and/or bacteremia. Register sepsis: yes/no

Post-injury malaria

In areas with endemic malaria Falciparum, the rate of symptomatic post-injury malaria is an indicator of treatment quality. Symptomatic malaria is defined as clinical signs of malaria (fever > 38.5 °C plus chills and sweating) and positive rapid test or microscopic smear examination. Register: post-injury malaria yes/no.

In-hospital days

The duration of the hospital treatment may be an indicator of post-injury recovery. However, this variable may be inaccurate because other factors may affect in-hospital time (actions of war, security measures, in-hospital physical rehabilitation etc.).

Gathering end-point variables

The result variables are registered at the end-point, which is the hospital providing definitive trauma surgery. Forr this we use a simple form to register the essential variables and factors.