Preliminary Uterine Artery Ligation vs Pericervical Tourniquet in Abdominal Myomectomy Hemorrhage Control
Blood loss remains one of the most important technical challenges in abdominal myomectomy. The operation aims to remove fibroids while preserving the uterus, but fibroids are often highly vascular, the myometrium bleeds readily, and distorted pelvic anatomy can make haemostasis difficult. Even in experienced hands, uncontrolled bleeding can increase operative stress, prolong surgery, raise transfusion risk, and, in severe cases, push the surgeon towards hysterectomy.
Two commonly discussed methods for reducing haemorrhage are preliminary uterine artery ligation and the pericervical mechanical tourniquet. Both reduce uterine perfusion during myoma enucleation, but they do so in different ways. Their practical value depends on operative anatomy, surgeon experience, fertility goals, available resources, and the expected difficulty of the case.
This article compares the two techniques, summarises key findings reported in comparative surgical research, and considers what the evidence means for everyday practice.
Why haemorrhage control matters in abdominal myomectomy
Abdominal myomectomy is still widely performed, especially for large fibroids, multiple fibroids, deeply intramural lesions, and cases where minimally invasive removal is unsuitable. Haemorrhage risk rises when fibroids are large, numerous, fundal, broad ligament based, or close to major vessels. Anaemia before surgery also increases the clinical impact of even moderate blood loss.
The goals of haemorrhage control are straightforward:
Maintain a clear operative field.
Reduce intraoperative blood loss.
Lower the need for blood transfusion.
Preserve uterine tissue and reproductive potential.
Avoid emergency hysterectomy.
Support safe multilayer myometrial closure.
Mechanical and vascular control methods are part of a broader plan. Other measures may include correction of anaemia, careful incision placement, vasopressin use where appropriate, meticulous enucleation, electrosurgical haemostasis, and layered closure. No single method replaces sound surgical judgement.
The comparison between preliminary vascular ligation and a pericervical tourniquet is clinically relevant because both are relatively low-cost options. They do not require expensive equipment and can be adapted to many open myomectomy settings, including resource-conscious surgical units.
How the two techniques reduce bleeding
Although both methods aim to reduce uterine blood flow, they act at different points in the vascular pathway.
Preliminary uterine artery ligation
In preliminary uterine artery ligation, the surgeon identifies and occludes the uterine arteries before making the myometrial incisions or before major enucleation begins. This is typically done bilaterally. The aim is to reduce arterial inflow into the uterus at an early stage of the operation.
The uterine artery runs close to the ureter, especially near the level of the cervix. Safe ligation requires accurate knowledge of pelvic anatomy and deliberate dissection. In distorted anatomy, large cervical fibroids, adhesions, or broad ligament fibroids, the technique may be more difficult.
The theoretical advantage is that vascular control is more direct. Once both uterine arteries are secured, the uterus receives less arterial inflow throughout the critical part of the operation. Bleeding from the myoma bed may be reduced, and the operative field may remain clearer.
Pericervical mechanical tourniquet
A pericervical tourniquet involves placing a constricting device, often a rubber catheter, Foley catheter, or similar material, around the cervico-isthmic region to compress uterine vessels temporarily. In many techniques, windows are made in the broad ligament, and the tourniquet is passed around the lower uterus before being tightened.
The attraction is simplicity. It can be quick to apply, does not always require formal vascular dissection, and produces immediate reduction in uterine perfusion. The surgeon can release it after enucleation and closure to check for bleeding.
The limitation is that it is temporary and mechanical. Once released, bleeding may resume from inadequately secured vessels. The tourniquet may also compress tissues unevenly, and its effect can vary depending on fibroid location, uterine size, and collateral flow.
What comparative studies suggest about effectiveness
Comparative studies evaluating these two approaches generally focus on measurable outcomes such as intraoperative blood loss, haemoglobin drop, transfusion requirement, operative time, and perioperative complications. Some studies also examine postoperative recovery, febrile morbidity, or return of menstrual function, though long-term fertility outcomes are less often assessed in sufficient depth.
The key finding across this area of research is that both techniques can reduce bleeding during abdominal myomectomy when compared with no vascular control, but they may not perform equally in all settings.
In the study comparison referred to in the brief, preliminary artery control appeared to provide stronger haemorrhage reduction than a pericervical tourniquet, especially during the active phase of myoma enucleation. The likely reason is anatomical. Direct uterine artery occlusion reduces the main arterial inflow before the uterus is incised, while a tourniquet relies on external compression around the cervix and may be less complete in very large or irregularly shaped uteri.
Reported findings from comparative work in this field commonly include:
Lower measured blood loss with preliminary vascular control.
A smaller perioperative fall in haemoglobin in patients with more effective devascularisation.
Reduced need for transfusion when blood loss is substantially controlled.
A clearer surgical field, which may improve enucleation and closure.
Longer preparation time for artery ligation in some cases.
Faster application but less durable control with tourniquet use.
These findings should be interpreted with care. Myomectomy studies often differ in fibroid size, number of fibroids, baseline haemoglobin, surgeon experience, use of vasoconstrictive agents, and definitions of blood loss. Measuring blood loss during open pelvic surgery is also imperfect because blood mixes with irrigation fluid and swabs.
A practical reading of the evidence is this: preliminary arterial control may offer more reliable haemorrhage reduction, but it demands greater anatomical skill. A pericervical tourniquet remains useful because it is simple, quick, and familiar, though its protection may be less complete.
Benefits and drawbacks of preliminary artery ligation
Preliminary artery ligation is attractive when the expected bleeding risk is high. This includes large intramural fibroids, multiple fibroids requiring several uterine incisions, and cases where a dry field is crucial for safe reconstruction.
Potential benefits
The major benefit is early control of uterine inflow. This can make the operation calmer and more predictable. When the surgeon opens the myometrium, the tissue may bleed less, which improves visibility and reduces repeated coagulation.
A clearer field can also help preserve healthy myometrium. Excessive electrocautery can damage tissue, and persistent bleeding can make plane identification difficult. Better visibility supports precise enucleation and layered suturing.
There may also be an advantage after the tourniquet stage would normally end. Since ligation is not simply a temporary external compression method, haemostasis may remain more stable during closure and early postoperative observation.
Other practical benefits include:
Less dependence on rapid clamp-and-suture reactions.
Better visibility around deep intramural beds.
Possible reduction in transfusion exposure.
Lower stress in complex myomectomy if performed safely.
Potential drawbacks
The main drawback is technical difficulty. The uterine artery is close to the ureter, and pelvic anatomy can be distorted by fibroids, endometriosis, prior surgery, or adhesions. Poorly placed sutures or clamps can injure adjacent structures.
The technique may also increase operative time, especially during the learning phase. A surgeon unfamiliar with retroperitoneal dissection may spend longer achieving safe exposure than would be needed to apply a tourniquet.
Concerns sometimes arise about future fertility and uterine perfusion. The uterus has collateral blood supply, and many patients resume normal menstruation after artery ligation, but long-term reproductive data are not always strong enough to dismiss concern in every case. Counselling should reflect that uncertainty, particularly for patients with strong fertility goals.
The main risks to consider are:
Ureteric injury if anatomy is not clearly identified.
Vascular injury during dissection.
Added operative time.
Need for advanced pelvic surgical skill.
Uncertain long-term fertility implications in some patient groups.
Benefits and drawbacks of the pericervical tourniquet
The pericervical tourniquet remains popular because it is simple and accessible. In many units, it is a familiar method taught early in open myomectomy training.
Potential benefits
The greatest strength is speed. A mechanical tourniquet can often be applied without extensive pelvic sidewall dissection. It gives immediate feedback because the uterus becomes less vascular, and bleeding during the uterine incision may reduce quickly.
It is also low cost. This matters in many Indian and global surgical settings where operating theatre resources vary. A Foley catheter or similar material is widely available and does not require specialised devices.
The temporary nature of the tourniquet is also useful. The surgeon can release it before completing the operation to identify active bleeding points. This step is critical because a tight tourniquet can mask bleeding that appears only after reperfusion.
Potential benefits include:
Quick application.
Low equipment cost.
Ease of teaching and replication.
Reversible temporary occlusion.
Useful in settings with limited resources.
Potential drawbacks
The same temporary effect can become a disadvantage. If haemostasis is not secured before release, bleeding can recur. In large uteri, broad ligament fibroids, or high fundal fibroids, the tourniquet may not fully control inflow from collateral vessels.
There is also a concern about tissue pressure. A very tight tourniquet can cause local trauma, venous congestion, or tissue marks at the cervico-isthmic region. Prolonged application may increase ischaemic risk, so timing and periodic assessment matter.
Placement can be difficult in patients with adhesions, distorted lower uterine anatomy, or broad ligament extension. Blind or forceful passage through the broad ligament should be avoided because of the risk of vascular or ureteric injury.
The main limitations are:
Less complete vascular control in some anatomical situations.
Rebound bleeding after release.
Potential tissue pressure injury.
Reduced effectiveness when collateral supply is significant.
Risk during placement if anatomy is unclear.
A practical comparison for surgical decision-making
The choice between the two methods should not be framed as a universal winner and loser. Each method has a role, and the best approach depends on case selection and surgical skill.
Consideration | Preliminary artery ligation | Pericervical mechanical tourniquet |
Main mechanism | Direct reduction of uterine arterial inflow | Temporary mechanical compression near the cervix |
Technical demand | Higher, requires confident pelvic anatomy | Moderate, usually easier to learn |
Speed of application | May take longer | Usually quick |
Bleeding control | Often more reliable in high-risk cases | Useful but may be incomplete |
Reversibility | Not immediately reversible in the same way | Easily released |
Key risk | Ureteric or vascular injury during dissection | Rebound bleeding and pressure-related tissue effects |
Best suited for | Complex or high-bleeding-risk myomectomy in skilled hands | Straightforward cases or low-resource settings where rapid temporary control is needed |
For large fibroids, multiple incisions, and anticipated difficult enucleation, preliminary artery control may be favoured if the surgeon has the required experience. For less complex cases, or where rapid and temporary vascular control is preferred, a tourniquet may be appropriate.
A combined strategy may also be considered in selected cases, though it should not become routine without clear indication. Combining techniques can reduce bleeding, but it may also add complexity, tissue manipulation, and ischaemic exposure. Each additional step should have a clear purpose.
Implications for surgical practice and training
The main implication is that haemorrhage control should be planned before the incision, not improvised after bleeding begins. Preoperative imaging, anaemia correction, blood availability, and surgical approach all influence outcomes.
For surgical teams, the study findings support several practice points.
Surgeon training should include pelvic vascular anatomy. If preliminary artery ligation offers better haemorrhage control, trainees need supervised exposure to retroperitoneal anatomy, ureter identification, and safe ligation techniques.
Tourniquet use should still be taught carefully. Simple does not mean risk-free. Proper placement, controlled tightening, time awareness, and release before final closure are essential.
Technique selection should be individualised. A patient with a single anterior intramural fibroid does not need the same vascular strategy as a patient with a bulky uterus and multiple deep fibroids.
Outcome audit matters. Units performing abdominal myomectomy should track estimated blood loss, transfusion rates, haemoglobin change, operative time, complications, and need for conversion to hysterectomy. Local data often guide practice better than habit alone.
Counselling should be balanced. Patients should understand that haemorrhage control methods aim to improve safety, but no technique removes bleeding risk entirely. For fertility-desiring patients, discussion should include uterine reconstruction quality, scar integrity, and the limits of long-term fertility data.
The clinical takeaway
Both preliminary uterine artery ligation and the pericervical mechanical tourniquet can reduce haemorrhage during abdominal myomectomy. The strongest practical distinction is reliability versus simplicity. Direct arterial ligation may provide more consistent reduction in blood loss, particularly in complex cases, but it requires greater surgical expertise and careful protection of the ureter. The tourniquet is faster, inexpensive, and widely usable, yet its effect is temporary and may be less complete after release.
For practice, the best approach is not automatic preference for one technique in every case. It is structured decision-making: assess fibroid burden, map anatomy, correct anaemia, choose the haemorrhage-control method that matches the surgical scenario, and confirm haemostasis before closure.
This content is for medical education only and does not replace institutional protocols, specialist training, or patient-specific clinical judgement.
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