Objective: To analyze the clinical manifestation, laboratory examination, treatment and prognosis of congenital factor Ⅺ (FⅪ) deficiency. Methods: The clinical data of 80 patients with congenital FⅪ deficiency in our hospital from September 2006 to October 2020 were analyzed retrospectively. Results: Among the 80 patients, there were 33 males (41.3%) and 47 females (58.8%) , with a median age of 32 (2-66) years. Twenty-eight cases (35.0%) had bleeding events, including 11 cases of spontaneous bleeding (13.8%) , 9 cases of ecchymosis or bleeding after skin trauma (11.3%) , 9 cases of postoperative bleeding (11.3%) . Among the female patients, there were 11 cases of menorrhagia (23.4%) and 1 case of bleeding after vaginal delivery (2.1%) . Laboratory examination were characterized by prolonged activated partial thromboplastin time (APTT) , normal prothrombin time (PT) , and decreased FⅪ activity (FⅪ∶C) . Nine patients (11.3%) were tested for FⅪ gene (F11) with 11 mutations. Twenty-seven patients (33.8%) received fresh frozen plasma (FFP) treatment, 15 patients (18.8%) were received for prophylaxis with no bleeding occurred during and after operation. Conclusion: Most patients with congenital FⅪ deficiency have no or mild bleeding symptoms. There was no significant correlation between FⅪ∶C and the severity of bleeding symptoms, and there was a well consistency between FⅪ∶C and F11 homozygous or heterozygous mutation type. Prophylactic infusion of FFP can effectively reduce the risk of operative bleeding.
目的： 分析遗传性凝血因子Ⅺ（FⅪ）缺乏症的临床表现、实验室检查、治疗及转归。 方法： 对2006年9月至2020年10月就诊于中国医学科学院血液病医院的80例遗传性FⅪ缺乏症患者进行回顾性分析。 结果： 80例患者中，男33例（41.3%），女47例（58.8%），中位年龄32（2~66）岁。28例（35.0%）存在出血事件，其中自发性出血11例（13.8%），皮肤磕碰后瘀斑或出血9例（11.3%），手术后出血9例（11.3%），女性患者月经过多11例（23.4%），阴道分娩后出血1例（2.1%）。实验室检查表现为活化部分凝血活酶时间（APTT）延长、凝血酶原时间（PT）正常、FⅪ活性（FⅪ∶C）减低。9例（11.3%）患者接受F11基因检测，共检测到11种突变。27例（33.8%）患者接受新鲜冰冻血浆（FFP）治疗，15例（18.8%）手术前预防性输注患者均未发生术中、术后出血。 结论： 多数遗传性FⅪ缺乏症患者无出血症状或症状轻微，FⅪ∶C与出血严重程度之间缺乏相关性，FⅪ∶C与F11基因纯合或杂合突变类型具有较好的一致性。预防性输注FFP可有效降低手术出血风险。.
Keywords: Congenital; Factor Ⅺ deficiency; Retrospective analysis.