- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 NCT01385904
Blood Levels of Ketamine in Patients Using Topical Application of 10% Ketamine Gel for Neuropathic Pain
Plasma Concentrations of Ketamine and Norketamine in Patients Using Topical Application of 10% Ketamine for Neuropathic Pain.
The purpose of this research study is to measure how much, if any, ketamine is absorbed into the blood stream after ketamine gel is applied to the skin. The investigators expect that the topical administration will provide pain relief locally, at the site of pain, but not be absorbed into the bloodstream and thus not cause side effects. This research will help assess the safety of this drug by measuring the blood concentrations of the drug.
Ketamine is a general anesthetic drug but also has excellent pain relieving qualities. It has been used to relieve chronic pain by administering intravenously, by mouth, or as an injection beneath the skin. When given these ways ketamine can occasionally cause side effects like dizziness, nausea, nightmares, agitation, hallucinations. Recently it has been used topically for patients with neuropathic pain in order to avoid the dizziness and nausea side effects.
Neuropathic Pain can be partially caused by the misfiring of small nerve fibers close to the area of pain. By applying it on the skin, it is expected the drug can penetrate the skin and act directly on the small nerve fibers. The advantage is that less drug will get into the blood circulation. Up to now, it has not been carefully studied how much of the drug appears in the circulation after application on the skin.
연구 개요
상태
연구 유형
등록 (예상)
연락처 및 위치
연구 장소
-
-
Ontario
-
London, Ontario, 캐나다, N6A 4V2
- 모병
- Pain Clinic, St. Joseph's Health Care London Hospitals
-
연락하다:
- Rajarathinam Manikandan, MD
- 전화번호: 13465 5196858500
- 이메일: drmani.ab8@gmail.com
-
연락하다:
- Patricia Morley - Forster, MD, FRCPC
- 전화번호: 65065 (519) 646-6000
- 이메일: pat.morley-forster@sjhc.london.on.ca
-
수석 연구원:
- Patricia Morley- Forster, MD, FRCPC
-
부수사관:
- Rajarathinam Manikandan, MD
-
부수사관:
- Dr Craig Railton, MD FRCP(C)
-
-
참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
샘플링 방법
연구 인구
설명
Inclusion Criteria:
- Patients with peripheral, focal neuropathic pain such as or complex regional pain syndrome following surgery, bony, soft tissue trauma or nerve trauma, associated with significant allodynia and hyperalgesia who score equal to or greater than 4 in the DN4 questionnaire.
- Duration of pain more than 3 months.
- Ability to speak English adequately to consent to and participate in the study
Exclusion Criteria:
- Allergy to ketamine
- Severe medical illnesses like, e.g. unstable angina, tachyarryhthmias, renal or hepatic failure
- History of psychosis.
- Patients who are already on oral ketamine treatment.
- Patients who are taking HIV Antiretrovirals: (indinavir, nelfinavir, ritonavir saquinavir); Antibiotics: (clairithromycin, itraconazole, ketoconazole, telithromycin,fluconazole, erythromycin); Calcium Channel Blockers (verapamil, diltiazem),Amiodarone, Ciprofloxacin. (These drugs inhibit CYP 3A4 enzyme which metabolises ketamine)
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 관찰 모델: 케이스 전용
- 시간 관점: 유망한
공동 작업자 및 조사자
수사관
- 수석 연구원: Patricia Morley- Forster, MD, FRCPC, Western University, Canada
간행물 및 유용한 링크
일반 간행물
- Clements JA, Nimmo WS, Grant IS. Bioavailability, pharmacokinetics, and analgesic activity of ketamine in humans. J Pharm Sci. 1982 May;71(5):539-42. doi: 10.1002/jps.2600710516.
- Poyhia R, Vainio A. Topically administered ketamine reduces capsaicin-evoked mechanical hyperalgesia. Clin J Pain. 2006 Jan;22(1):32-6. doi: 10.1097/01.ajp.0000149800.39240.95.
- Finch PM, Knudsen L, Drummond PD. Reduction of allodynia in patients with complex regional pain syndrome: A double-blind placebo-controlled trial of topical ketamine. Pain. 2009 Nov;146(1-2):18-25. doi: 10.1016/j.pain.2009.05.017. Epub 2009 Aug 22.
- Zapantis G, Csoka I, Csanyi E, Horvath G, Eros I. Evaluation of ketamine systemic absorption from topical preparations. Short Communication. Acta Biol Hung. 2006 Sep;57(3):387-9. doi: 10.1556/ABiol.57.2006.3.12.
- Pedersen JL, Galle TS, Kehlet H. Peripheral analgesic effects of ketamine in acute inflammatory pain. Anesthesiology. 1998 Jul;89(1):58-66. doi: 10.1097/00000542-199807000-00011.
- Lynch ME, Clark AJ, Sawynok J, Sullivan MJ. Topical 2% amitriptyline and 1% ketamine in neuropathic pain syndromes: a randomized, double-blind, placebo-controlled trial. Anesthesiology. 2005 Jul;103(1):140-6. doi: 10.1097/00000542-200507000-00021.
- Grant IS, Nimmo WS, Clements JA. Pharmacokinetics and analgesic effects of i.m. and oral ketamine. Br J Anaesth. 1981 Aug;53(8):805-10. doi: 10.1093/bja/53.8.805.
연구 기록 날짜
연구 주요 날짜
연구 시작
기본 완료 (예상)
연구 완료 (예상)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (추정)
연구 기록 업데이트
마지막 업데이트 게시됨 (추정)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .