que tipos de lesiones puede presentar un paciente que tuvo una colision frontal

After a frontal collision with a tree where the airbag did not deploy but the patient was wearing a three-point seatbelt (head to pelvis), the patient may present with multiple types of injuries including head, thoracic, spinal, and abdominal or pelvic injuries.

Head injuries are common due to rapid deceleration and impact forces, even if the airbag did not deploy. The patient might have traumatic brain injury ranging from mild concussion to severe injuries such as skull fractures, intracranial hematomas (epidural, subdural), subarachnoid hemorrhage, and associated complications like seizures and cognitive impairment. These injuries can occur due to impact with the steering wheel or windshield despite seatbelt use, especially when airbags fail to deploy NICE CKS,NICE NG232 El-Hennawy et al. 2014.

Spinal injuries, particularly thoracic and lumbar spine fractures, are frequently seen in belted occupants after high-energy frontal collisions. Three-point seatbelt use is associated with specific spine injury patterns such as burst fractures, due to flexion and compression forces transmitted to the spine during abrupt deceleration. Flexion-distraction injuries are also possible, though more common in two-point belted occupants, and unbelted occupants more frequently suffer fracture-dislocations. These spinal injuries carry risks of neurological deficit depending on severity NICE NG37,Rao et al. 2014 Rao et al. 2014.

Chest and thoracic injuries are common extraspinal injuries in these scenarios due to the restraint effect of the seatbelt across the chest and pelvis. These injuries may include rib fractures, pulmonary contusions, pneumothorax, hemothorax, and blunt cardiac injuries. The presence of seatbelts often reduces the severity of head injury but may increase the incidence of chest wall and thoracic injuries NICE NG39,Rao et al. 2014 El-Hennawy et al. 2014.

Pelvic and abdominal injuries can occur with a three-point seatbelt as the lap belt portion restrains the pelvis against the seat, and sudden deceleration may cause pelvic fractures or intra-abdominal organ injuries such as solid organ lacerations or hollow viscus injury. These injuries are more likely in patients with minor spinal injuries, which paradoxically are associated with a higher injury severity score and risk of pelvic or abdominal trauma NICE NG37,Rao et al. 2014 Rao et al. 2014.

Because the airbag did not deploy, the head and thoracic injuries might be more severe than if the airbag had functioned properly, despite seatbelt use Wallis and Greaves I. 2002 Wallis & Greaves I 2002. The restraint system reduces the risk of ejection and fatality but forces are still transmitted to key body regions that the seatbelt covers.

Additional considerations include possible neck injuries such as whiplash or more serious cervical spine trauma, due to hyperflexion and hyperextension forces during the collision, even if the patient was restrained NICE CKS. Secondary injuries related to the mechanism and energy transfer may include soft tissue injury, bruising along the seatbelt path, and psychological sequelae associated with trauma NICE CKS.

In summary, the patient may present with head trauma including concussion or severe brain injury, thoracic injuries such as rib fractures or pneumothorax, thoracolumbar spinal fractures typical of restrained occupants, and pelvic or abdominal injuries from deceleration forces transmitted through the lap belt. Thorough trauma assessment with imaging (including CT of head, spine, chest, abdomen, and pelvis) is recommended to identify all injuries NICE NG37,NICE NG39. Vigilance for intracranial complications and cervical spine injury is key NICE CKS,NICE NG232.