What are the risks of higher hemorrhage with direct transfer for my stroke?
For large vessel occlusion (LVO) stroke, getting you to treatment quickly is critical. One approach, called direct transfer to angiography suite (DTAS), skips standard imaging and sends you straight to the procedure room. While DTAS can speed up treatment, a recent large trial found it may come with a higher risk of bleeding in the brain (symptomatic intracranial hemorrhage). This is important to discuss with your doctor when deciding the best path for your care.
What the research says
A 2024 randomized controlled trial compared DTAS to the conventional pathway (imaging first) in patients with suspected LVO stroke. The trial found that DTAS did not improve the rate of functional independence at 90 days compared to the conventional pathway. However, it did show a higher rate of symptomatic intracranial hemorrhage (sICH) in the DTAS group 5. This means that for some patients, the faster route may increase the chance of dangerous bleeding.
A 2022 meta-analysis of earlier studies had suggested DTAS might improve outcomes and shorten treatment times 6. But the newer, larger trial 5 provides stronger evidence that the bleeding risk is real and that the benefit may not be as clear as once thought.
Other studies on thrombectomy timing show that earlier treatment generally leads to better outcomes and smaller infarcts, without a significant increase in bleeding 4. However, these studies did not specifically test the DTAS pathway. The key risk with DTAS appears to be that you may undergo a procedure without full imaging confirmation, potentially exposing you to unnecessary risks if you have a condition that mimics stroke or if you have a hemorrhage that wasn't detected 7.
What to ask your doctor
- What is the risk of symptomatic intracranial hemorrhage with direct transfer to the angiography suite compared to standard imaging first?
- How does my individual stroke severity and time since symptom onset affect the balance of risks and benefits for DTAS?
- Are there any specific imaging findings (like a low ASPECTS score) that would make DTAS riskier for me?
- What is the typical door-to-puncture time at this center, and how much time could DTAS realistically save in my case?
- If I am not a candidate for DTAS, what is the standard pathway and how quickly can I expect treatment?
This question is drawn from common patient questions about Neurology and answered using cited medical research. We do not provide individualized advice.