Real-World outcomes of thrombectomy for distal medium vessel occlusions in the middle East and North Africa region: A multicenter registry analysis
摘要
Recent randomized trials showed neutral results for distal medium vessel occlusion (DMVO) thrombectomy, but real-world effectiveness across diverse healthcare settings remains unknown. We evaluated DMVO thrombectomy outcomes in the Middle East and North Africa (MENA) region.
MethodsThe MEMENTO registry retrospectively analyzed consecutive DMVO thrombectomy patients (M2, M3, A2-3, P2-3 segments) across 15 centers (2022–2024). DMVOs were classified as primary, baseline secondary, or iatrogenic secondary. Primary outcome was 90-day functional independence (mRS 0–2). Secondary outcomes included successful recanalization (TICI ≥ 2b), mortality, and symptomatic hemorrhage.
ResultsAmong 164 patients (median age 72, NIHSS 10), subtypes included primary (25%), baseline secondary (50%), and iatrogenic secondary (25%) DMVOs. Overall successful recanalization was 69%, with primary DMVOs achieving higher rates than baseline secondary (78% vs. 59%, p = 0.046). Good functional outcome occurred in 54% overall, with no significant differences between subtypes (primary 59%, baseline secondary 51%, iatrogenic secondary 54%, p = 0.661). Stent retriever achieved highest recanalization (85%) followed by combination (74%) and aspiration (45%, p = 0.046). Independent predictors of poor outcome included age > 75 (aOR 2.34, 95% CI 1.18–4.64), NIHSS > 15 (aOR 3.12, 95% CI 1.45–6.71), and unsuccessful recanalization (aOR 4.89, 95% CI 2.31–10.35). Cost-effectiveness analysis across MENA income levels yielded ICERs of $26,875-$71,333/QALY, exceeding regional GDP thresholds. The modest numerical difference in outcomes (54% vs. 45% historical controls) does not establish clinical benefit given neutral randomized trial results.
ConclusionsReal-world DMVO thrombectomy outcomes closely mirror recent randomized trial results showing limited clinical benefit compared to medical management across diverse healthcare settings, with prohibitive economic costs that challenge routine implementation. These findings support highly selective application focusing on younger patients with moderate deficits and primary occlusions.