Complications were associated with more severe ASIA grade: 84% of patients with Grade A and 25% of patients
with Grade D had at least 1 complication. Seventy-eight percent of complications occurred within 14 days of injury.
The most frequent types of severe and moderate complications were respiratory failure, pneumonia, pleural effusion,
anemia, cardiac dysrhythmia, and severe bradycardia. The mortality rate was 3.5% and was associated with increased
age and preexisting morbidity