Electromyography and clinical neurophysiology
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Electromyogr Clin Neurophysiol · Sep 1993
Combined ultrasonographic and neurographic examination: a new technique to evaluate phrenic nerve function.
In this report a new technique for simultaneous assessment of the electrical and mechanical properties of the diaphragm is presented. The phrenic nerve of 9 healthy persons was stimulated at the neck using magnetic stimulation. ⋯ The data show that this method helps to distinguish the diaphragm muscle compound action potential from electrical activity derived from neighboring muscles activated by the brachial plexus. Furthermore, it provides a non-invasive tool which can easily be used in clinical practice to study the mechanical properties of the diaphragm.