Practical Tips for Office Hysteroscopy and Second-Generation “Global” Endometrial Ablation

Hysteroscopic endometrial biopsy: from indications to instrumentation and techniques. A call to action

During the last twenty years, the diagnostic approach to endometrial pathology has radically evolved. For over a century, intrauterine blind biopsy techniques were considered the gold standard procedure for the histopathological diagnosis of intrauterine diseases. The advent of hysteroscopy, which made it possible to directly visualize the uterine cavity, and the subsequent miniaturization of the instruments allowing its use in the office setting without anesthesia are considered game-changers. To date, it is feasible to retrieve a targeted eye specimen of endometrial tissue with little or no discomfort for the patient in the office setting. To pursue this aim, several technological upgrades have improved the diagnostic accuracy of hysteroscopic endometrial biopsy. In this paper we provide an up-to-date review of the latest evidence regarding indications, instrumentations, and techniques for hysteroscopic endometrial biopsy, to help the operator in providing an adequate endometrial sampling for histopathological analysis.

Pathological findings in the endometrium after microwave endometrial ablation

The acceptance of MEA in Japan is well demand due to its outstanding effectiveness and safety. Infrequently, a repeat MEA or hysterectomy is needed for recurrent menorrhagia in case of failure ablation. The reasons of recurrent menorrhagia subsequent MEA treatment are unclear. The objective of current study is to identify the possible causes of menorrhagia repetition following MEA, together with the observation of histological changes in the endometrium due to this treatment compared with normal cycling endometrial tissue. A total of 170 patients, 8 (4.7%) of them carried out hysterectomy after 16.8 months (range, 2-29 months) of MEA treatment. Normal (n = 47) and MEA (n = 8) treated paraffin embedded endometrial tissue were prepared for hematoxylin and eosin (H&E) and immunostaining study to recognize the histological changes in the endometrium as a result of MEA treatment. The histological features observed increased tubal metaplasia (TM) including negative expression of the estrogen receptor (ER) and progesterone receptor (PR) in the endometrium subsequent MEA treatment. Increased TM together with the absence of ER and PR expression might be a reasonable explanation for repetition menorrhagia in cases of failure ablation. Further study is required to clarify the molecular mechanisms of tubal metaplasia and the expression loss of hormone receptor in the endometrium as a result of MEA treatment. Current studies propose that low dose estrogen-progestin may not be effective with recurrent menorrhagia patient's due to the inadequacy of hormone receptor expression in the endometrium following MEA.

Low-Dose Ketamine for Outpatient Hysteroscopy: A Prospective, Randomised, Double-Blind Study

Objective

Outpatient hysteroscopy is often accompanied by pain and discomfort along with frequent occurrence of bradycardia and hypotension. This study aimed to observe if intravenous low-dose ketamine reduces the pain scores along with lowering the incidence of bradycardia and hypotension during hysteroscopy.

Methods

This prospective, randomised, double-blind trial was conducted in operating rooms in a tertiary care hospital. In this study, we enrolled 72 patients with American Society of Anesthesiologists status I to II undergoing hysteroscopy. We randomised patients into two groups, and both groups received paracervical block. The control group received intravenous pentazocine and promethazine along with saline infusion. The ketamine group received ketamine infusion (0.75 mg kg⁻¹ bolus followed by infusion at the rate of 10 mcg kg⁻¹ min⁻¹). We analysed visual analogue scale (VAS), rescue analgesic consumption, hemodynamic parameters, lowest recorded heart rate, blood pressure, level of sedation, patient’s comfort, surgeon’s satisfaction and nursing staff’s satisfaction.

Results

Analysis of the data revealed that the pain scores were similar in both the groups (p=0.493, p<0.001). Rescue analgesic was required by 47% patients in control group, compared to only 5.6% patients in ketamine group. Episodes of bradycardia and hypotension were more pronounced in the control group than in the ketamine group [77.4±10.9 vs. 78.4±5.5; 67.6±8 vs. 70.1±6 respectively] (p<0.001). Patient comfort and surgeon’s satisfaction were higher in the ketamine group, but nursing satisfaction was higher in the control group. Disorientation was present in 75% patients in the ketamine group as compared to none in the control group.

Conclusion

We concluded that low-dose ketamine in day-care hysteroscopy is an effective and safe agent.

Endometrial ablation for heavy menstrual bleeding

Endometrial ablation can be described as one of the great gynecological success stories. It has changed the management of heavy menstrual bleeding dramatically. The development of newer (second generation) endometrial ablative techniques has enabled clinicians to set up comprehensive 'one stop clinics' based on an outpatient service to treat heavy menstrual bleeding effectively without the need for general anesthetic or conscious sedation. This article describes the rationale and evidence for use of different endometrial auto-ablative systems along with relevant technical and clinical aspects. It also addresses the essentials of a successful approach to outpatient endometrial ablation along with discussion on risks, complications and contraindications of the procedure.

Office hysteroscopy: current trends and potential applications: a critical review

Office hysteroscopy is an excellent method of identifying and treating intracavitary uterine lesions. It has become easy to learn and perform; as an aid of modern technological applications, it is safe, accurate, provides immediate results under direct visualisation, and offers the additional benefit of histological confirmation and the discomfort of patients is minimal. We applied an extended literature search to explore the special features and details of the technique itself, as it evolved since it first appeared 30 years back. Our initial goal was to examine potential changes/improvements of the modality, in terms of the instrumentation used and the technique itself, the indications of use, its incorporation in daily practice, and patients' and clinicians' acceptability.