[Diaphragmatic pacemaker dysfunction and utility of diaphragmatic ultrasonography].

Patients with spinal cord injuries above the C5 vertebrae have a high risk of respiratory complications, and complete spinal cord injures can require support with mechanical ventilation. In selected patients, implantation of a diaphragmatic pacemaker offers the possibility of breathing without mechanical support and reduces respiratory complications, increasing the patient's independence. Ultrasonography is a simple and non-invasive technique that may be useful in the differential diagnosis of thoracic diseases. We present the case of a patient with a traumatic cervical spinal cord injury, who underwent diaphragmatic pacemaker implantation. The use of ultrasound allowed rapid and reliable diagnosis of device malfunction. M-mode diaphragmatic ultrasonography is a simple and non-invasive technique that can be incorporated into routine clinical practice to diagnose diaphragm movement disorders.