The impact of altering filling pressures in diagnostic outpatient hysteroscopy on the procedure completion rates and associated pain: a randomised double-blind controlled trial

The effect of informing the patient about the procedure with video imaging before office hysteroscopy on pain

OBJECTIVE

To evaluate the effect of informing patients undergoing diagnostic office hysteroscopy via a video 24 h before the procedure and determine the changes in pain scores, channel transit time, the degree of difficulty of the procedure, and physiological parameters.

DESIGN

Single-blind randomized controlled trial.

SETTING

The study was conducted between September 1, 2021 and April 1, 2022 at the University of Health Sciences Bakirkoy Dr. Sadi Konuk Training and Research Hospital.

PARTICIPANTS

A total of 134 patients aged 18-65 years who needed diagnostic office hysteroscopy.

INTERVENTIONS

Participants were randomized into two groups, the standard information group (Group 1: controls), and the video information + standard information group (Group 2). After office hysteroscopy, a visual analog scale (VAS) and Likert scale were used to assess pain and the degree of difficulty of the procedure, respectively. Physiological parameters were evaluated before and after the procedure.

MAIN OUTCOME MEASURE

To determine the effect of video-based multimedia information administered 24 h before office hysteroscopy on post-procedure pain.

RESULTS

The mean VAS score of the group that watched the training video (3.02 ± 1.88) was significantly lower than the control group (4.72 ± 2.54) who did not watch the training video (p < 0.001). The mean cervical channel transit time in seconds (sec) during the procedure was found to be significantly higher in the control group (21.57 ± 15.10 s) than in the video-watching group (p = 0.011). There was no significant difference between the groups in terms of physiological parameters and the degree of ease of the procedure.

CONCLUSION

Our study has shown that informing patients in a pre-procedure video is an effective approach that shortens the duration of the channel transit time and reduces pain.

Pain Management during Office Hysteroscopy: An Evidence-Based Approach

Background and Objectives: Hysteroscopy is a reliable technique which is highly useful for the evaluation and management of intrauterine pathology. Recently, the widespread nature of in-office procedures without the need for anesthesia has been requesting validation of practical approach in order to reduce procedure-related pain. In this regard, we performed a comprehensive review of literature regarding pain management in office hysteroscopic procedures. Materials and Methods: MEDLINE, EMBASE, The Cochrane Library (Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials, Cochrane Methodology Register), Global Health, Health Technology Assessment Database and Web of Science, other research registers (for example Clinical Trials database) were searched. We searched for all original articles regarding pain relief strategy during office hysteroscopy, without date restriction. Results have been collected and recommendations have been summarized according to the Appraisal of Guidelines for Research and Evaluation (AGREE) tool. Moreover, the strength of each recommendation was scored following the Grading of Recommendations Assessment (GRADE) system, in order to present the best available evidence. Results: Both pharmacological and non-pharmacological strategies for pain management are feasible and can be applied in office setting for hysteroscopic procedures. The selection of strategy should be modulated according to the characteristics of the patient and difficulty of the procedure. Conclusions: Accumulating evidence support the use of pharmacological and other pharmacological-free strategies for reducing pain during office hysteroscopy. Nevertheless, future research priorities should aim to identify the recommended approach (or combined approaches) according to the characteristics of the patient and difficulty of the procedure.

A Systematic Review of the Effect of Type, Pressure, and Temperature of the Distension Medium on Pain During Office Hysteroscopy

OBJECTIVE

To identify the optimal distension medium type, pressure, and temperature to minimize pain during office hysteroscopy.

DATA SOURCES

MEDLINE, EMBASE, CINAHL, and CENTRAL were searched from inception to January 29, 2020.

METHODS OF STUDY SELECTION

We included randomized controlled trials in which women undergoing office hysteroscopy were randomized to either a distension medium type, pressure, or temperature against a suitable control, where pain was an outcome. Data regarding feasibility, visualization, complications, and satisfaction were also collected.

TABULATION, INTEGRATION, AND RESULTS

The literature search returned 847 studies, of which 18 were included for systematic review and 17 for meta-analysis. There was no significant difference in intraprocedural pain when comparing the use of normal saline against carbon dioxide (standardized mean difference [SMD], -0.12; 95% confidence interval [CI], -0.36 to 0.13). Subgroup analysis of high-quality studies revealed a statistically significant reduction in postprocedural pain with normal saline (SMD, -0.65; 95% CI, -1.14 to -0.16). Side effects were less frequent (Peto odds ratio, 0.29; 95% CI, 0.20-0.40) and patient satisfaction was higher (SMD, 1.39; 95% CI, 0.51-2.28) with normal saline compared with carbon dioxide. Pressures of ≤40 mm Hg reduced intraprocedural pain (SMD, -0.67; 95% CI, -1.09 to -0.26) at the expense of a higher proportion of unsatisfactory views (81%-89% at ≤40 mm Hg vs 95%-99% at ≥50 mm Hg). Postprocedural pain was reduced with lower filling pressures. Warming saline did not reduce intraprocedural pain (SMD, 0.59; 95% CI, -0.14 to 1.33).

CONCLUSION

Normal saline, instilled at the lowest pressure to acquire a satisfactory view, should be used for uterine distension during office hysteroscopy to minimize pain.

Pain management for in-office hysteroscopy. A practical decalogue for the operator

Hysteroscopy is known to be the gold standard for evaluation of intrauterine pathologies, pre-menopausal and post-menopausal abnormal uterine bleeding and, in addition to this, it is a crucial examination in the infertility work-up. In-office operative hysteroscopy incorporates the outstanding possibility of seeing and treating an intracavitary pathology in the same examination, eliminating all the risk related to anesthesia and reducing procedure-related costs. By now, performing operative procedures in the office setting is recognized as feasible and safe. Over the last 20 years, many efforts have been made to implement the in-office operative approach worldwide. However, for some women, in-office hysteroscopy is still considered a painful experience, with reported discomfort at different steps of the hysteroscopic procedures. Moreover, uneventful and tedious sensations might be increased by a high level of anxiety for such examination. For this reason, despite the feasibility of the in-office approach, many clinicians are still afraid of provoking pain during the procedure and rather not to perform surgical procedures in the office, postponing the removal of the pathology in the operating room. To date, there is no consensus concerning pain management for in-office hysteroscopy and different approaches, pharmacological and non-pharmacological aids, as well as several procedural tips and tricks are utilized. Our purpose is to provide a feasible practical decalogue for the operator, to supply adequate management of pain during in-office hysteroscopic procedures, performing challenging operations, shrinking discomfort, aiming to upgrade both women's and operator's satisfaction.

Pharmacological and non-pharmacological pain relief for office hysteroscopy: an up-to-date review

In-office hysteroscopy is considered the standard technique for visualization of the uterine cavity and the diagnosis of intrauterine pathologies. Moreover, nowadays, it is possible to treat a vast number of intracavitary diseases in the office, without the need for the inpatient setting. However, in some cases, pain might occur, and this is the most common reason for not completing the procedure. Over the last 20 years, many efforts have been carried out to miniaturize the instrumentation and to improve the techniques in order to avoid discomfort. Nonetheless, hysteroscopy still provokes distress for many patients. For this reason, pharmacological and non-pharmacological treatments for intraoperative and postoperative pain relief have been widely used for in-office hysteroscopy, with different results in various groups of women. The purpose of this review was to analyze the current literature on pharmacological aids (non-steroidal anti inflammatory drugs, cyclooxygenase-2 inhibitors, antispasmodics, local anesthetics, prostaglandins, opioids) and non-pharmacological interventions (transcutaneous electrical nerve stimulation, uterine stretching, uterine pressure, warming of distension medium, hypnosis, music, vocal-local) and to evaluate their impact on the relief from pain experienced during in-office hysteroscopy.

What should the optimal intrauterine pressure be during outpatient diagnostic hysteroscopy? A randomized comparative study

AIM

The aim of this study was to evaluate and compare lower and higher uterine filling pressures during outpatient diagnostic hysteroscopy.

METHODS

One hundred and seventy-five women eligible for outpatient diagnostic hysteroscopy were included in this randomized double blind comparative study. The subjects were randomized into two groups. Group 1 (n = 80) underwent surgery with lower intrauterine filling pressures (30, 40, and 50 mmHg) and group 2 (n = 81) underwent surgery with higher filling pressures (70, 80, and 100 mmHg). The primary outcome measure was adequate visibility during the procedure. The secondary outcome measure was pain perceived by the patient during and 30 min after the procedure.

RESULTS

In total, 161 patients completed the trial. Group 2 had significantly higher adequate visibility than group 1 (71/80, 88.75% in group 1 and 79/81, 97.5% in group 2, P = 0.008). There was a trend toward increase in pain scores with higher pressures during the procedure. However, there were no significant differences between the two groups in terms of visual analog scale pain scores measured 30 min after the procedure.

CONCLUSION

Lower uterine filling pressure was associated with lower pain scores with a higher trend towards inadequate visibility. It appears that higher filling pressure can be used for performing office hysteroscopy, but it is associated with higher pain scores.