Is the number of rib fractures a risk factor for delayed complications? A case–control study

Abstract

Aim

To analyse factors that may predict the appearance of rib fracture complications during the first days of evolution and determine whether the number of fractures is related to these complications.

Method

Retrospective case–control study of patients admitted with a diagnosis of rib fractures between 2010 and 2014. Two groups were established depending on the appearance or not of pleuropulmonary complications in the first 72 h, and the following were compared: age, sex, Charlson comorbidity index (CCI), number and uni- or bilateral involvement, mechanism of trauma, days of hospital stay, haemoglobin on discharge minus haemoglobin on admission, pleuropulmonary complications during admission (pneumothorax, haemothorax or pulmonary contusion) and placement of pleural drainage.

Results

One hundred and forty-one cases of rib fractures were admitted in the period mentioned. There were no differences in the patients’ baseline characteristics (age, sex and Charlson Comorbidity Index) between the two groups. Differences were found in the number of fractures (2.98 ± 1.19 in the group without complications vs 3.55 ± 1.33 in the group with complications, p = 0.05) and in the drop in the level of haemoglobin (0.52 ± 0.91 mg/dl vs 1.22 ± 1.29 mg/dl, p = 0.01). The length of hospital stay varied considerably in each group (5.35 ± 4.05 days vs 7.86 ± 6.96 days), but without statistical significance (p = 0.11).

Conclusions

The number of fractured ribs that best predicted the appearance of complications (delayed pleuropulmonary complications and greater bleeding) was 3 or more.

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