在这两个期间，通路闭塞的患者全部进行外科血栓切除术。
During both periods, occluded accesses were directed to surgical thrombectomy.
对于PVT的治疗外科血栓切除术不是首选治疗方法，因为它具有侵入性，技术上存在困难并且易引起肝性脑病。
Surgical thrombectomy is not preferred as treatment method for PVT since it is invasive, technically difficult and can cause hepatic encephalopathy.
对于PVT的治疗外科血栓切除术不是首选治疗方法，因为它具有侵入性，技术上存在困难并且易引起肝性脑病。
Surgical thrombectomy is not preferred as treatment method for PVT since it is invasive, technically difficult and can cause hepatic encephalopathy.
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