Termination of Pregnancy Clinical Trial
Official title:
A Doubled Blinded Randomised Controlled Trial of Conscious Sedation With Transcutaneous Nerve Stimulation for Pain Relief During Suction Evacuation for Termination of First Trimester Pregnancies
Verified date | April 2018 |
Source | Queen Mary Hospital, Hong Kong |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
To study the effectiveness of the pain relief method of transcutaneous electrical nerve stimulation (TENS) for women who will undergo suction evacuation under conscious sedation for first trimester termination of pregnancy.
Status | Enrolling by invitation |
Enrollment | 170 |
Est. completion date | March 22, 2020 |
Est. primary completion date | January 22, 2020 |
Accepts healthy volunteers | No |
Gender | Female |
Age group | 18 Years and older |
Eligibility |
Inclusion Criteria: - Chinese aged 18 years or above and mentally competent - Up to 12 weeks gestation on the day of STOP - Size of the uterus on pelvic examination compatible with estimated duration of pregnancy, or dating confirmed with ultrasound scan - Normal general and gynecological examination Exclusion Criteria: - Skin damage or allergy at site of TENS pads application - Previous experience with TENS - History of pacemarker insertion - History of severe respiratory or cardiac disease - Severe and recurrent liver disease - Allergic to lignocaine - Myasthenia gravis - Psychiatric conditions requiring medication - Disorders that constitute contraindications to use of prostaglandins |
Country | Name | City | State |
---|---|---|---|
Hong Kong | Queen Mary Hospital | Hong Kong |
Lead Sponsor | Collaborator |
---|---|
Queen Mary Hospital, Hong Kong |
Hong Kong,
Bélanger E, Melzack R, Lauzon P. Pain of first-trimester abortion: a study of psychosocial and medical predictors. Pain. 1989 Mar;36(3):339-50. — View Citation
Lisón JF, Amer-Cuenca JJ, Piquer-Martí S, Benavent-Caballer V, Biviá-Roig G, Marín-Buck A. Transcutaneous Nerve Stimulation for Pain Relief During Office Hysteroscopy: A Randomized Controlled Trial. Obstet Gynecol. 2017 Feb;129(2):363-370. doi: 10.1097/AOG.0000000000001842. — View Citation
Sluka KA, Walsh D. Transcutaneous electrical nerve stimulation: basic science mechanisms and clinical effectiveness. J Pain. 2003 Apr;4(3):109-21. Review. — View Citation
Vance CG, Dailey DL, Rakel BA, Sluka KA. Using TENS for pain control: the state of the evidence. Pain Manag. 2014 May;4(3):197-209. doi: 10.2217/pmt.14.13. Review. — View Citation
Wong CY, Ng EH, Ngai SW, Ho PC. A randomized, double blind, placebo-controlled study to investigate the use of conscious sedation in conjunction with paracervical block for reducing pain in termination of first trimester pregnancy by suction evacuation. Hum Reprod. 2002 May;17(5):1222-5. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | To assess the change of 100-point visual analogue pain scale in 3 time points | To measure patient's pain intensity before and after suction TOP by using The Visual Analogue Scale (VAS) consists of a straight line length of 100 mm with the endpoints defining extreme limits such as 'no pain at all' and 'pain as bad as it could be'. The patient is asked to mark his pain level on the line between the two endpoints. The distance between 'no pain at all' and the mark then defines the subject's pain. This tool was first used in psychology by Freyd in 1923. | Patient will be asked for the pain intensity by using the 100 mm linear VAS 5 minutes before receiving the active TENS/ placebo TENS before the start of suction evacuation, reassess 20 minutes later and 1 hour after operation. | |
Secondary | To assess the change of Anxiety level of the patients in 3 time points by using State-Trait Anxiety Inventory Questionnaire to record patient's anxiety level. | To record patient's anxiety level for comparison | Patient will be asked for the anxiety level by using STAI 5 minutes before receiving the active TENS/ placebo TENS before the start of suction evacuation, reassess 20 minutes later and 1 hour after operation. | |
Secondary | To assess the difficulty of the operation | The surgeon will assess the difficulty of the operation by using LEVEL OF SEDATION AND DIFFICULTY OF OPERATION ASSESSMENT FORM (proposed by Ramsay et al.) | The surgeon will be asked to fill the assessment form right after the suction evacuation operation immediately. |
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