Neurophysiological and technical considerations for the design of an implantable phrenic nerve stimulator
| Autor: | J. K. Ojala, G. A. Baer, Pasi P. Talonen, V. Häkkinen |
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| Rok vydání: | 1990 |
| Předmět: |
Adult
Male Biomedical Engineering Motor nerve Electric Stimulation Therapy Stimulation medicine Humans Aged Phrenic nerve Muscle fatigue business.industry Skeletal muscle Equipment Design Smooth muscle contraction Middle Aged Electrodes Implanted Computer Science Applications Phrenic Nerve Diaphragm pacing medicine.anatomical_structure Anesthesia Female medicine.symptom Respiratory Insufficiency business Neuroscience Muscle Contraction Muscle contraction |
| Zdroj: | Medical & Biological Engineering & Computing. 28:31-37 |
| ISSN: | 1741-0444 0140-0118 |
| DOI: | 10.1007/bf02441674 |
| Popis: | Sequential stimulation during one muscle contraction of several compartments of a motor nerve, using multiple-electrodes, allows individual nerve-muscle compartments to be stimulated at fairly low frequencies. This provides time for recovery even during muscle contraction. However, the whole muscle is stimulated at near to its optimum fusion frequency, which provides smooth muscle contraction. This stimulation system imitates the natural activation of skeletal muscle. The new phrenic nerve stimulator described utilises the principle of sequential motor nerve stimulation. It also incorporates a sigh function. The sigh current recruits additional axons at certain intervals and thus creates and keeps available a reserve of conditioned muscle. Clinical advantages result: the conditioning phase after the beginning of long-term phrenic nerve stimulation for electroventilation is shortened and muscle fatigue is delayed. A need of increase of gas exchange can be answered by increasing tidal volume instead of respiration rate alone. |
| Databáze: | OpenAIRE |
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