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No eligible subjects identified. Study closed with IRB.
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Pyridostigmine is a medication that is used in certain heart rate and blood pressure conditions. This medication, as a side effect, is known to also cause changes in the junction between a nerve and muscle. The changes caused at the nerve muscle junction by pyridostigmine could alter the effect of muscle relaxants (a medication used during surgery and anesthesia). The investigators are conducting this study to see whether patients taking pyridostigmine are more or less sensitive to rocuronium (a muscle relaxing medication used during surgery).
No subjects enrolled. No data collected.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| pyridostigmine | administration of rocuronium to determine its potency. | ||
| control arm (no pyridostigmine) | determination of potency of rocuronium in patients not taking pyridostigmine |
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| Measure | Description | Time Frame |
|---|---|---|
| Dose of the muscle relaxant rocuronium that will lead to 50% decrease in the force of the evoked muscle contraction in patients taking pyridostigmine. | Rocuronium used to produce muscle weakness or paralysis during surgery. Its potency is measured as ED50, the dose necessary to cause a 50% reduction in the force of evoked muscle contraction. We intend to determine this measure of potency (ED50 for rocuronium) in patients taking pyridostigmine and compare it with control subjects. | 12 months |
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Inclusion Criteria:
Exclusion Criteria:
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Subjects taking pyridostigmine for any reason who are scheduled for surgery under general anesthia.
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| Name | Affiliation | Role |
|---|---|---|
| Shashi Bhatt, MD | University of Toledo Health Science Campus | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Toledo, Health Science Campus | Toledo | Ohio | 43614 | United States |
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| ID | Term |
|---|---|
| D009123 | Muscle Hypotonia |
| ID | Term |
|---|---|
| D020879 | Neuromuscular Manifestations |
| D009461 | Neurologic Manifestations |
| D009422 | Nervous System Diseases |
| D012816 | Signs and Symptoms |
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| D013568 | Pathological Conditions, Signs and Symptoms |