Blunt Chest Trauma in Polytraumatized Patients: Predictive Factors for Urgent Thoracotomy.

PURPOSE

Current guidelines on urgent thoracotomy of polytraumatized patients are based on data from perforating chest injuries. We aimed to identify predictive factors for urgent thoracotomy after chest-tube placement for blunt chest trauma in a civilian setting.

METHODS

Polytraumatized patients (Injury Severity Score ≥16) with blunt chest trauma, submitted to a level I trauma centre during a period of 12 years that received at least one chest tube were included. Trauma mechanism, chest-tube output, haemoglobin values, need for cellular blood products, coagulopathies, rib fracture pattern, thoracotomy, and mortality were retrospectively analysed.

RESULTS

235 polytraumatized patients were included. Patients that received urgent thoracotomy (UT, = 10) showed a higher mean chest-tube output within 24 h with a median (Mdn) of 3865 (IQR 2423-5156) mL compared to the group with no additional thoracic surgery (NT, = 225) with Mdn 185 (IQR 50-463) mL ( < 0.001). The cut-off 24-h chest-tube output value for recommended thoracotomy was 1270 mL (ROC-Curve). UT showed an initial haemoglobin of Mdn 11.7 (IQR 9.2-14.3) g/dL and an INR value of Mdn 1.27 (IQR 1.11-1.69) as opposed to Mdn 12.3 (IQR 10-13.9) g/dL and Mdn 1.13 (IQR 1.05-1.34) in NT (haemoglobin: = 0.786; INR: = 0.215). There was an average number of 7.1(±3.4) rib fractures in UT and 6.7(±4.8) in NT ( = 0.649).

CONCLUSIONS

Chest-tube output remains the single most important predictive factor for urgent thoracotomy also after blunt chest trauma. Patients with a chest-tube output of more than 1300 mL within 24 h after trauma should be considered for transfer to a level I trauma centre with standby thoracic surgery.