Abstract
Individuals with gender dysphoria often seek medical interventions, such as hormone treatment and surgery, to live as their identified gender. Cross-sex hormone therapy typically consists of various estrogen formulations which confer varying risks of venous thromboembolism (VTE). Currently, there is no standard practice by surgeons regarding the preoperative gender-affirming surgery (GAS) hormone regimen of male-to-female (MTF) patients to minimize thromboembolic postoperative complications. The aim of this review is to examine the current literature on VTE occurring in MTF transgender patients on cross-sex hormone therapy (CSHT) when undergoing various gender-affirming surgeries-facial feminization surgery (FFS), top surgery (TS), and bottom surgery (BS)-to understand how evidence-based recommendations regarding perioperative hormone regimens can be established to improve clinical outcomes. Within the past 25 years, 7 published studies have examined the incidence of VTE in MTF patients undergoing GAS procedures. Two of these articles examined MTF patients undergoing FFS, 1 article reported a patient who had undergone BS and FFS during the same hospitalization, and the remaining 4 articles investigated VTE risk in BS. Our review supports that plastic surgeons who perform GAS are divided on their preferred CSHT protocols, with some requiring patients to suspend their CSHT weeks before surgery and others allowing patients to continue CSHT through the day of surgery. Three of the 7 studies detailed a CSHT perioperative regimen which instructed patients to suspend CSHT sometime before surgery; 1 study tapered CSHT to lower levels before surgery; the remaining 3 studies did not specify a CSHT perioperative regimen. This review highlights the paucity of data failing to support that continuing CSHT through GAS elevates VTE risk. We conclude that in the absence of definitive VTE risk factors (e.g., smoking, clotting disorders, or malignancy), surgeons may engage MTF patients in joint decision-making process to determine the most optimal perioperative CSHT management plan on a case-by-case basis. Future studies are warranted to evaluate VTE risk based on patient age, type of surgery, operating time, prophylactic measures, follow-up time, and CSHT perioperative regimens.
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