Do You NEED a Duplex Ultrasound Before Microsclerotherapy for spider veins? (What the Evidence Says)

Should you order a *duplex ultrasound scan* for every single patient before performing *Microsclerotherapy* for leg spider veins? While it sounds like it should have a simple answer, conflicting international guidelines and a lack of randomized controlled trial data have created a lot of confusion for aesthetic and vein practitioners. In this video, Dr. Haroun Gajraj dives deep into the clinical evidence, compares the major global guidelines (ESVS, UIP, SVS/AVF/AVLS, and NICE), and breaks down a pragmatic, evidence-based framework you can use in your clinic right now to determine who actually benefits from a scan and who doesn't. 💡 *Read the full evidence review here:* *www.veincare.academy/blog/blog/duplex-ultrasound-before-microsclerotherapy-evidence-review* --- 🕒 Timestamps *00:00* - Introduction: The Duplex Ultrasound Dilemma *00:56* - Clinical Reality vs. Routine Scanning Risks *01:44* - What the Duplex Studies Actually Show (C1 Disease) *02:51* - Pathophysiology: Is Reflux the Only Driver? *03:44* - The Evidence Gap: Do Pretreatment Scans Improve Outcomes? *04:15* - Analyzing NICE Guideline Surveillance (CG168) *05:08* - 3 Key Pieces of Evidence to Consider (EASI & Cochrane) *06:00* - International Guideline Showdown: ESVS vs. UIP vs. SVS *07:38* - Why Guidelines Diverge (Logical Assumptions vs. Data) *08:53* - The "Predictable Cascade" of Unnecessary Ablation *09:42* - CLINICAL FRAMEWORK: When Duplex is NOT Required *10:31* - CLINICAL FRAMEWORK: When Duplex SHOULD be Performed *11:23* - The Case of Treatment-Resistant Spider Veins *12:11* - Incidental Reflux & Shared Decision-Making *13:40* - Summary of Key Clinical Takeaways --- 🔑 Key Takeaways from This Video *No Outcome Data:* There is currently no primary randomized controlled trial evidence proving that a pretreatment duplex scan improves the cosmetic results of microsclerotherapy. *Guideline Discrepancies:* The *ESVS (2022)* recommends universal scanning based strictly on expert consensus (Level C evidence). Conversely, the *UIP (2024)* and *SVS/AVF/AVLS (2023)* explicitly recommend against routine scanning for asymptomatic C1 patients to avoid unnecessary saphenous interventions. *Selective Approach:* A pragmatic workflow uses selective scanning based on clinical history, symptoms (aching, heaviness), visible varicose veins, skin changes, or a history of DVT. *Sclerotherapy Resistance:* If a patient has undergone two or more courses of microsclerotherapy with poor results, a duplex scan is strongly indicated to check for deeper feeding or perforator vessels. --- 📢 Connect & Support If you found this clinical update helpful, please give it a 👍 *Thums Up**, leave a comment with your thoughts, and **Subscribe* to the channel so you never miss future evidence-based vein care insights! *Subscribe here:* [https://www.veincare.academy/subscrib...] *Website:* [https://www.veincare.academy/] *Disclaimer: This educational article is written and regularly reviewed by Dr Haroun Gajraj, a GMC‑registered vein specialist who has treated thousands of patients with vein disease and has trained many doctors and nurses in microsclerotherapy, shortwave diathermy and related cosmetic vein procedures. Dr Gajraj is the founder and board member of the British Association of Sclerotherapists. You can view his current GMC registration and independent patient reviews on iWantGreatCare for further information about his clinical background. This video is for healthcare professionals and is based on current clinical guidelines, peer‑reviewed research and day‑to‑day practice experience. The information here is general education only and is not a substitute for individual clinical judgement, local protocols or formal training. Clinicians remain responsible for assessing each patient, obtaining informed consent, explaining risks and alternatives, and working within the scope of their professional registration and regulatory guidance. For regular updates get my weekly newsletter *https://www.veincare.academy/subscrib... © VeinCare Academy | Dr. Haroun Gajraj | veincare.academy This article is intended for qualified healthcare professionals. All clinical decisions should be based on individual patient assessment, primary medical literature, and current professional guidelines. #Microsclerotherapy #SpiderVeins #DuplexUltrasound #VeinTreatment #Phlebology #AestheticMedicine #DrHarounGajraj