Infertility Clinical Trial
Official title:
Intracervical Block and Pain Perception During the Performance of a Hysterosalpingogram: A Randomized Controlled Trial
The purpose of this study is to compare the efficacy of 1% lidocaine intracervical block to placebo for pain control during the performance of a hysterosalpingogram (HSG). We hypothesized that an intracervical block would decrease pain during a hysterosalpingogram.
The hysterosalpingogram (HSG) is an integral part of the evaluation for anatomic etiologies of female infertility. The majority of women regard a hysterosalpingogram as acutely painful since it involves placement of a cervical tenaculum, traction on the cervix, and instillation of dye through a cervical cannula. Different techniques have been employed to attempt to make the procedure less painful, including use of balloon catheters rather than cannulas; however, this has not been shown to be uniformly effective. Previous studies have shown a reduction in overall pain during HSG after pre-medication with oral non-steroidal anti-inflammatory drugs. Benzocaine gel (20%) applied to the cervix has also been shown to reduce pain. Conversely, a study of pre-medication with paracetamol (acetaminophen) showed no statistical improvement in pain perception. Additionally, transcervical intrauterine instillation of lidocaine has been shown in randomized studies to not improve pain scores and may actually increase pain after the procedure is complete A MEDLINE literature search of papers written in English from January 1966 to August 2005, using the keywords “hysterosalpingogram,” “analgesia”, “paracervical,” and “intracervical” did not reveal any prior studies on the use of an intracervical block prior to hysterosalpingography. A paracervical block has been shown to decrease pain with therapeutic abortions, endometrial biopsy, and office hysteroscopy (7, 8). We hypothesized that an intracervical block would also decrease pain during a hysterosalpingogram. A three armed, randomized controlled trial comparing pain control after a 1% lidocaine intracervical block, saline injection or no injection in patients undergoing hysterosalpingogram was performed. ;
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Treatment
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