What is hysteroscopy
Hysteroscopy is a gynecologic procedure that allows examination of the inside of the uterus using an instrument called a hysteroscope. This is a thin device equipped with a light source and an optical or camera system, allowing direct visualization of the uterine cavity and its walls. During hysteroscopy, after local anesthesia or under sedation, the hysteroscope is introduced through the vagina and subsequently through the external uterine os of the cervix until it reaches the uterine cavity. In some cases, slight cervical dilation may be necessary to facilitate access and allow introduction of the instrument.
This procedure can be performed for diagnostic or therapeutic purposes. In the diagnostic setting, hysteroscopy is used to evaluate and identify any abnormalities or pathologic conditions within the uterus, such as polyps, fibroids, uterine malformations, or other irregularities of the endometrial cavity. During the examination, the physician carefully observes the uterus and, when indicated, may also perform a tissue sampling for histologic examination.
For therapeutic purposes, hysteroscopy may be employed for the removal of endometrial polyps, submucosal myomas, or for the treatment of certain uterine abnormalities. The procedure may also be indicated in the management of endometrial hyperplasia in selected cases.
It can be performed in an outpatient or hospital setting, depending on the clinical picture, the type of planned procedure, and any need for additional interventions. Hysteroscopy represents an important tool in gynecologic practice for the diagnosis and treatment of uterine pathologies.
Clinical indications
The main indications for hysteroscopy include clinical situations in which direct evaluation of the uterine cavity or targeted treatment of intracavitary pathologies is necessary:
- Abnormal uterine bleeding.
- Infertility.
- Recurrent miscarriage.
- Pelvic pain.
- Evaluation of suspected uterine abnormalities.
- Monitoring of intrauterine devices (IUDs).
General benefits and risks
Among the main advantages of this minimally invasive procedure are reduced recourse to more invasive surgical interventions and the ability to prevent or treat various uterine conditions in a targeted manner. The availability of outpatient hysteroscopy also allows considerably reduced recovery times compared to traditional inpatient procedures.
Although hysteroscopy is generally considered a safe procedure, in rare cases complications such as infection, bleeding, or uterine perforation may occur. It is important to discuss with the physician the details of the procedure, the possible benefits, risks, and any alternatives before undergoing the examination.
Frequently asked questions
Operative hysteroscopy can be performed in an outpatient setting under local anesthesia, by paracervical or intracervical block, or in the operating room under general or spinal anesthesia, based on procedural complexity and patient clinical characteristics. ACOG guidelines recommend the use of injectable local anesthesia in diagnostic and operative hysteroscopic procedures, as it is effective in reducing procedural pain.
Some studies have shown that inhaled nitrous oxide and paracervical lidocaine may offer pain control comparable to other analgesic strategies. Many patients adequately tolerate outpatient procedures, particularly when the vaginoscopic approach is used, which is associated with significant reduction in pain during the examination.
Ref.: [1, 2, 3, 4]
Recovery after operative hysteroscopy is generally rapid. After outpatient procedures, in most cases it is possible to resume usual activities the same day. In more complex operative hysteroscopic procedures, such as hysteroscopic myomectomy, return to work has been described with a median of approximately 4 days.
Outpatient procedures are associated with faster recovery and a high degree of patient satisfaction compared to those performed in an inpatient setting.
Ref.: [4, 5, 6]
Operative hysteroscopy is a minimally invasive procedure with a low complication incidence, generally between 1% and 3%. The most frequent perioperative complications include hemorrhage, uterine perforation, and cervical laceration. In a multicenter series of 13,600 procedures, the overall complication rate of operative hysteroscopy was 0.95%, with uterine perforation as the most frequent event, reported in 0.76% of cases.
Intravasation of distending fluids is observed almost exclusively in operative procedures and is rare (incidence 0.02%). Intrauterine adhesiolysis procedures present the highest complication rate (4.5%). Postoperative infections are infrequent and estimated at 1–2% of cases.
Ref.: [6, 7, 8, 9, 10, 11]
Available evidence on specific restrictions after hysteroscopy is limited. Traditionally, after gynecologic surgery, limitations on physical activity were suggested, but with the spread of minimally invasive surgery and rapid recovery protocols such restrictions have progressively decreased. After an outpatient procedure, it is generally possible to rapidly resume daily activities in most cases.
As a precaution, it may be advisable to avoid sexual intercourse, vaginal tampons, and bathtub baths for a few days, in order to reduce the risk of infection, although guidelines do not define a uniform duration. Definitive recommendations should be tailored by the treating physician based on the type of procedure performed.
Ref.: [5, 11, 12, 13]
Before hysteroscopy, pregnancy must be reasonably ruled out. In premenopausal women with regular cycles, the preferable time for the examination is the follicular phase, immediately after menstruation. There is insufficient evidence to systematically recommend routine cervical preparation, but this may be considered in patients with greater risk of cervical stenosis or increased procedural pain.
Vaginal misoprostol at a dose of 400 micrograms, administered at least 4 hours before the procedure, may help reduce pain. When general anesthesia is planned, fasting in the preceding 6–12 hours may be required. It is generally also advisable to avoid vaginal douches, tampons, or vaginal medications in the 24 hours preceding the examination.
Ref.: [2, 4, 13]
The time required for complete endometrial recovery varies depending on the type of hysteroscopic procedure performed: it may be approximately 1 month after the removal of endometrial polyps and up to 3 months after treatment of submucosal fibroids. A prospective study showed that 86% of women have complete endometrial healing 1 month after polypectomy, compared to 18% after myomectomy and 67% after adhesiolysis.
However, a retrospective study of 318 patients undergoing embryo transfer after operative hysteroscopy showed that the time interval between hysteroscopy and embryo transfer does not modify implantation or clinical pregnancy rates. This suggests that, after operative hysteroscopy, it is not always necessary to delay fertility treatments, although the optimal timing must be defined based on the procedure performed and the overall clinical picture.
Ref.: [14, 15, 16]
Specialist Consultation Request
For evaluation of the indication for diagnostic or operative hysteroscopy, or to discuss a complex clinical picture related to uterine cavity pathologies, you may request a consultation with Prof. Di Donato.
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