Thromboprophylaxis in gynaecology: a review of current evidence

Key content: Thromboembolism is a major cause of preventable morbidity and mortality. Hospital acquired thrombosis (HAT) accounts for 50-60% of all thromboembolic events. As well as effects on patient safety, there are considerable cost implications to both prophylaxis and treatment. While guidance exists on thromboprophylaxis for patients in obstetrics and those undergoing general surgery, there is a paucity of guidance relating to gynaecological practice. Increasing prevalence of risk factors and multimorbidity is paralleled by higher risk of thromboembolic events. Gynaecological surgery presents some unique risk factors for thrombosis. Learning objectives: To understand the basic pathophysiology of thrombosis in relation to risk factors particularly relevant to gynaecology and pelvic surgery. To know the current evidence in key areas relevant to gynaecological practice: early pregnancy;day case surgery;minimally invasive gynaecological surgery;open and complex benign gynaecology and gynaecological oncology. To be aware of proposed guidance on risk assessment and prophylaxis in thrombosis as relevant to the gynaecologist based on current evidence. Ethical issues: Problems with thromboprophylaxis in high-risk patients include noncompliance and refusing animal products/injections. Clinicians may be reluctant to institute thromboprophylaxis, most times because of the possible risks of bleeding. Copyright © 2022 Royal College of Obstetricians and Gynaecologists.

Ovarian Vein Thrombosis in a Non-Puerperal Patient.

Ovarian vein thrombosis (OVT) is a relatively rare, but serious disease more commonly seen in puerperal patients. In the postpartum period, there is an unequal incidence of OVT in women with vaginal delivery (0.18%) and caesarean section (2.0%). OVT is usually associated with other conditions like pelvic inflammatory disease, malignant tumours, sepsis, enteritis, and recent pelvic or abdominal surgery. The incidence of idiopathic OVT is extremely rare and only a few cases have been reported to date in healthy patients with unknown aetiology. Patients with OVT present with abdominal pain, nausea, vomiting, fever or abdominal mass. Complications of OVT include pulmonary embolism, ovarian infarction, sepsis and death. CT scanning of the abdomen provides reliable evidence for the diagnosis of idiopathic OVT. Thrombus in most patients with idiopathic OVT is located in the right ovarian vein. This may be due to the longer length of the right ovarian vein, right shift of the uterus and relative insufficiency of the right ovarian vein valve. Treatment of OVT includes systemic anticoagulation which will achieve resolution of symptoms and prevent life-threatening complications. Our case report documents a non-puerperal patient who underwent hysterectomy a year before presenting to the ED with complaints of diarrhoea and found to have OVT on a CT scan. Our case brings attention to the fact that OVT can occur outside the puerperium and might present as a rare complication of minimally invasive surgeries for endometrial cancer. Furthermore, we posit that OVT in the non-puerperal patient may be a separate clinical entity. LEARNING POINTS: Ovarian vein thrombosis (OVT) can occur outside the puerperium and might present as a rare complication of minimally invasive surgeries.OVT should be included in the differential diagnosis of a non-puerperal postoperative woman presenting with vague abdominal symptoms.Duration of anti-coagulation varies from case to case. More research is needed to determine its exact duration.

Practice changes in Italian Gynaecologic Units during the COVID-19 pandemic: a survey study.

The impact of Coronavirus disease 2019 pandemic on Italian Gynaecological Units practice and the compliance and satisfaction with available guidelines/recommendations is unknown. Therefore, a survey was conducted among all Italian Gynaecological Units Directors in April 2020. The response rate was 90% (135/150). 77.8% of centres performed surgery only for oncologic or not deferrable pathologies, and 9.6% was closed. 68.7% of directors were at least moderately satisfied by published guidelines/recommendations, but 94.8% of respondents identified limitations, mainly (83%) the absent definition of benign non-deferrable pathology. Responders considered as non-deferrable severe endometriosis (69.6%), endometriosis with organ failure/dysfunction (74.1%), and unresponsive symptomatic fibroids (89.6%). Despite guidelines/recommendations, respondents treated ovarian (77%) and endometrial (71.6%) cancer as usual. Only a minority of respondents reduced the laparoscopic approach (11.2%) and adopted all recommended surgical precautions (9.6%). Compliance with available guidelines/recommendations appears incomplete. Reconsidering guidelines/recommendations regarding oncological cases and specify non-deferrable benign pathologies would improve guidelines/recommendations compliance.Impact statementWhat is already known on this subject? The SARS-CoV-2 pandemic has profoundly influenced medical routine practice worldwide. Surgery units have been forced to reduce or even completely restrict their activity to re-allocate human resources. Many major international gynaecological societies have released statements and guidelines, providing various recommendations to guide practice changes. However, the impact of the SARS-CoV-2 pandemic on Italian Gynaecological Units practice and the compliance and satisfaction with available guidelines/recommendations is unknown.What do the results of this study add? Study results provide evidence showing how the SARS-CoV-2 pandemic has changed surgical activity in the Italian Gynaecological Units. Most centres reduced surgical activity, limiting surgery only for oncologic or not deferrable pathologies. Moreover, our research shows the level of compliance and satisfaction with available guidelines/recommendations and where they need to be improved. Most directors were at least moderately satisfied but identified different limitations. Guidelines/recommendations do not provide enough details, such as the absent definition of benign non-deferrable pathologies.What are the implications of these findings for clinical practice and/or further research? The limited compliance with available guidelines/recommendations and identified limitations suggest reconsidering guidelines/recommendations focussing on identified gaps. Provide more details, such as specifying non-deferrable benign pathologies, would improve guidelines/recommendations compliance.