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Gabapentin pretreatment may reduce hyperalgesia occurring at the second surgery in serial, bilateral cataract surgery.
Hyperalgesia occurring at the second operation in bilateral eye surgery is well known, and mechanism of central sensitization might be involved. Gabapentin is known to lower the effect of central sensitization, and its effect on acute postoperative pain has been reported. Therefore, pretreatment of gabapentin after first operation may reduce the pain at second operation.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Gabapentin | Experimental | gabapentin pretreatment |
|
| Placebo | Placebo Comparator | placebo drug pretreatment |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| gabapentin | Drug | 100 mg tid of gabapentin is prescribed to the patient for 1 week after the first eye surgery |
|
| Measure | Description | Time Frame |
|---|---|---|
| proportion of subjects who answer that "pain was greater" in the second eye surgery | Intra operative (pain while fluid injection to anterior chamber) |
| Measure | Description | Time Frame |
|---|---|---|
| perioperative pain | evaluation of overall perioperative pain | end of surgery, post-op 1hr at PACU, at out-patient ward, post-op 1 day |
| Measure | Description | Time Frame |
|---|---|---|
| satisfaction | evaluation of satisfaction of both operator and patient | intra operative |
| anxiety | evaluation of patient's anxiety | baseline (at OR room arrival, just before sterile draping) |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Heepyoung Park, MD,PhD | Contact | 82-2-2072-2466 | hppark@snu.ac.kr | |
| Eugene Kim, MD | Contact | 82-2-2072-2469 | tomomie@hanmail.net |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Seoul National University Hospital | Recruiting | Seoul | 110-799 | South Korea |
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| ID | Term |
|---|---|
| D006930 | Hyperalgesia |
| ID | Term |
|---|---|
| D020886 | Somatosensory Disorders |
| D012678 | Sensation Disorders |
| D009461 | Neurologic Manifestations |
| D009422 | Nervous System Diseases |
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| ID | Term |
|---|---|
| D000077206 | Gabapentin |
| ID | Term |
|---|---|
| D000588 | Amines |
| D009930 | Organic Chemicals |
| D005680 | gamma-Aminobutyric Acid |
| D000613 | Aminobutyrates |
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| placebo | Drug | the same regimen of placebo drug is prescribed to the patient for 1 week after the first eye surgery |
|
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D002087 |
| Butyrates |
| D000144 | Acids, Acyclic |
| D002264 | Carboxylic Acids |
| D003509 | Cyclohexanecarboxylic Acids |
| D000146 | Acids, Carbocyclic |
| D003510 | Cyclohexanes |
| D003516 | Cycloparaffins |
| D006840 | Hydrocarbons, Alicyclic |
| D006844 | Hydrocarbons, Cyclic |
| D006838 | Hydrocarbons |
| D000596 | Amino Acids |
| D000602 | Amino Acids, Peptides, and Proteins |