This retrospective study showed that the correlation between the size of the submucous uterine fibroid and operative time for outpatient hysteroscopic resection was stronger in cases where fibroids had easier access (FIGO classes 0 and 1). In FIGO 2 fibroid cases, size and time correlation was had weaker due to challenging and time-taking resection of the “hidden” fibroid. Comparing FIGO 1 to 0 classes, resection of class 0 fibroids was faster independently from the size. Comparing class 2 to 0, due to the challenging resection from the deep part of the fibroid, in smaller size cases (not greater than 8 cm³), type 2 surgeries were significantly longer.
Submucous fibroids are proven to cause severe bleeding disorders [5]. On the contrary, the relationship between fibroids and fertility-related complaints (infertility, recurrent miscarriages) has been investigated extensively [4], but strong evidence remains elusive and more data is necessary to build final conclusions [19]. Hysteroscopic resection is the primary surgical procedure for treating fibroids in this location. Fibroid resection can be performed using various methods, including electrosurgical instruments, lasers, mechanical instruments, “cold loops” and hysteroscopic tissue retrieval systems (HTRS) during operative hysteroscopy [20].
Due to technological advancements and the demands of modern lifestyles, more and more of these surgeries are now performed in outpatient settings. Office hysteroscopy offers advantages over traditional methods performed in operating rooms [21], such as eliminating the need for anesthesia, staff, and hospitalization, making it more cost-effective and feasible and less stressful [22]. The most significant limiting factor during surgical procedures without anesthesia is the stress, discomfort or pain experienced by the patient. The impact of the type of surgery, instrument, and instrument diameter on the level of discomfort has been researched by many authors, but definitive correlations have not been established till now [23, 24]. One factor affecting the level of discomfort is the duration of the procedure. In most cases, hysteroscopic resection of fibroids is performed in small bites, meaning the duration of eliminating a fibroid correlates with its volume. Various conditions of the fibroid, which influence the difficulty of resection, have been analyzed by Lasmar et al. Depending on the localization of the fibroids within the uterine wall, FIGO types 0, 1, and 2 are differentiated. The more embedded the fibroid is in the uterine wall (FIGO 2), the harder it is to reach for resection. The localization of the fibroid within the uterine cavity (anterior, posterior, lateral, fundal) can also affect the surgery's duration, this is simply due to the angles of access to the lesion.
The challenge and duration of resection can vary due to the size, localization, and FIGO class of the fibroid. The rate of complications and the success of complete resection are also dependent on these factors. In 2005, Lasmar et al. published a scoring system [25] that predicts the challenge, success in complete resection, and the chance of complications based on the fibroid's conditions. The STEPW system assigns points for Size, Topography, Extension of the base, Penetration, and lateral Wall localization. According to the final score, three groups are established: low complexity hysteroscopy, complex surgery, and non-hysteroscopic techniques are recommended [25]. In 2021, the ISGE Task Force published a review with 14 recommendations concerning hysteroscopic fibroid resection to enhance the success of surgeries, ensure patient safety, and aid surgeons in choosing the appropriate therapeutic options [26]. Despite these quite good and relatively simple scales, most doctors do not use them at all and describe fibroids rather imprecisely.
As mentioned above, various methods are available for fibroid resection, including the use of scissors, lasers, resectoscopes, the cold loop method during hysteroscopy, and HTRS [27–31]. In recent decades, resectoscopic procedures using the slicing technique have been predominant, but HTRS is increasingly gaining prominence [32–35]. The advantage of resectoscopy is the effective maintenance of hemostasis during the procedure. However, its disadvantages include a longer learning curve compared to HTRS, more frequent movements in and out of the cavity for chip removal, and complications arising from the use of mono- or bipolar current, where there is always a risk of possible intestinal or bladder injury [28, 32, 35, 36].
Several limitations should be noted and acknowledged. Firstly, The absence of a control group makes it difficult to compare the outcomes of hysteroscopic resection with other treatment methods. Secondly, the study does not provide follow-up data on patient outcomes post-surgery, which is crucial for assessing the long-term efficacy and safety of the procedure. In addition, the use of paracervical or inhalative analgesia in selected cases introduces variability in the procedural approach, which may affect the outcomes and their interpretation. Moreover, being conducted in a single practice, the findings may lack generalizability to other settings, such as public hospitals, or different geographic locations. First of all, it does not take into account a larger group of doctors who have different degrees of training in these advanced procedures. Lastly, although reaching the minimum number of required patients, the study includes only 65 cases, which may limit the statistical power and the ability to generalize findings.
However, several strengths are also retrievable. Firstly, the focus on outpatient hysteroscopic procedures without general anesthesia reflects a modern and patient-friendly approach, potentially increasing the study’s relevance to current clinical practices. In our opinion, in the coming years the number of patients treated in outpatient clinics rather than in hospital wards will continue to increase. Moreover, the use of standardized classification system (FIGO) and a detailed description of the hysteroscopic procedure enhance the study's methodological rigor and reproducibility.
In conclusion, our results underscore the importance of detailed preoperative evaluation. By accurately measuring the size (diameters and volume) of the fibroid, the duration of surgery can be more reliably predicted. This information allows patients to better prepare for the procedure and enables healthcare providers to tailor the type and extent of analgesia more precisely according to the anticipated duration of the surgery. It also allows, above all, to optimize the work of a given office and plan equipment and the number of procedures. Further studies involving a larger number of cases are necessary to obtain more robust data. An expanded dataset would facilitate the detection of additional correlations between surgery duration and other relevant factors, thereby enhancing our understanding and management of hysteroscopic fibroid resection.