Case Scenario

Patient Background: A woman in her 30s who received hyaluronic acid injections in the nasal and nasolabial fold areas at another clinic. During the injection, the patient began experiencing unusual stinging and burning sensations near the injection site. Approximately 20 minutes after the injection was completed, blanching appeared in the perialar region, which progressed to a violaceous discoloration within one hour.

Emergency Transfer Timeline:

• 20 minutes post-injection: Blanching appeared in the perialar region; patient reported escalating local pain

• 1 hour post-injection: Blanched area began turning purplish-red with slight expansion

• Original clinic attempted pressure and warm compress management, but symptoms continued to worsen

• ~3 hours post-injection: Affected area darkened further with increasingly defined borders

• Original clinic contacted our facility for emergency transfer

• ~5 hours post-injection: Upon arrival at our clinic, the affected area had progressed to deep purple to dark discoloration

Presentation on Arrival:

• Sharply demarcated deep purple to dark skin discoloration from the perialar region to the nasolabial fold

• Noticeably reduced skin temperature in the affected zone

• Patient reported persistent pain and numbness in the affected area

• Capillary refill test indicated severely diminished blood flow in the affected region

• Patient in extreme distress and anxiety

Deep Analysis

Root Cause Analysis

> Key Insight: Vascular occlusion is one of the most serious acute complications of filler injection. Time is the critical determinant of tissue survival — the earlier intervention begins, the greater the probability of complete tissue recovery. Classic warning signs include: abnormal pain during injection, blanching or purplish discoloration around the injection area, and decreased skin temperature. Once these signs appear, emergency protocols should be initiated immediately rather than adopting a wait-and-see approach.

Related reading: Vascular Occlusion Mechanism and Emergency Response

Doctor's Perspective

"The timing of this patient's transfer was critical. While 5 hours is not the ideal intervention window — the earlier the better — it was still within the time frame where tissue salvage remained possible. The deep purple to dark skin color indicated severe ischemia, but through ultrasound assessment, we determined that the tissue had not yet progressed to complete necrosis, meaning a window of opportunity for rescue still existed.

Our emergency strategy was multi-pronged: first, immediately perform ultrasound-guided precision localization to confirm the exact position of the filler and its compression effect on surrounding vasculature; second, administer high-concentration hyaluronidase under ultrasound guidance, delivering it directly to the filler material compressing the vessel; third, implement vasodilation and anticoagulation support measures to facilitate perfusion recovery. The entire rescue process demands both speed and precision — every minute matters for tissue survival."

Treatment Plan and Process

Emergency Strategy

Emergency Rescue Process

Ultrasound emergency assessment: Rapid scanning to confirm filler location, extent of vascular compression, and residual blood flow status

Precision hyaluronidase injection: Under real-time ultrasound guidance, high-concentration hyaluronidase delivered directly to the filler compressing the vessel

Sequential supplemental injections: Based on real-time ultrasound monitoring, additional hyaluronidase administered to areas of persistent compression

Vasodilation support measures: Local and systemic blood flow enhancement therapy implemented concurrently

Real-time monitoring: Skin color changes and capillary refill assessed every 15-30 minutes

Follow-up treatment: 24-hour follow-up evaluation to determine need for additional intervention

Rescue Outcome

Approximately 2-3 hours after the initial emergency intervention, the affected skin color began transitioning from dark to a deep red, indicating blood flow restoration. At the 24-hour follow-up, most of the area had progressed to red to light red, with skin temperature gradually returning to normal. Through several days of intensive monitoring and supportive treatment, tissue perfusion progressively normalized.

Key Patient Notes

Special Characteristics of Vascular Occlusion Emergency

Recovery Timeline

> Key Insight: Successful vascular occlusion rescue does not mean immediate return to normal. Tissue that has experienced ischemia requires time to repair, and the recovery process may include temporary manifestations such as hyperpigmentation and texture changes. The important thing is to maintain regular follow-up so the physician can assess recovery progress and provide further restorative treatment at the appropriate time.

Clinical Takeaways

Timely recognition of warning signs is life-saving — abnormal pain during injection and blanching or purplish discoloration are early occlusion signals requiring immediate action

The time window determines outcomes — the first 6 hours after occlusion onset represent the golden period for rescue

Ultrasound's value in emergency rescue is irreplaceable — precise localization of the compression source enables precise decompression

Multi-pronged rescue strategy is essential — hyaluronidase, vasodilation, and perfusion support must proceed simultaneously

Injection safety is fundamental — understanding the vascular anatomy of facial danger zones is the first step in occlusion prevention

If you experience abnormal symptoms after injection, contact a medical professional immediately. For emergency evaluation, contact our clinic for urgent assistance.