Functional electric stimulation of the phrenic nerve and its clinical significance

: The peripheral parts of the phrenic nerve are healthy in some of the patients who require permanent or intermittent care in a respirator owing to reduced respiratory function of central aetiology. In such cases, continual care in a mechanical respirator can be avoided, and diaphragm function maintained by means of functional electrical stimulation (FES) of the phrenic nerve with carefully controlled electrical impulses. The method is suitable for use in certain cases of quadriplegia, or in patients with sleep apnoea. Experience with the method has shown that health care costs can be reduced and the patients' quality of life improved. In some cases, the patient may even regain partial work capacity.