英国帝国理工学院等机构的研究人员在最新一期《胸腔》杂志上报告说，血液中缺铁可能是导致血栓的原因，对于血栓高风险人群来说，也许可以通过补铁来降低血栓的发病率。
过去研究显示，遗传性出血性毛细血管扩张症患者血栓风险高。研究人员对600多名患这种病的人的血液分析发现，血液中铁元素的含量越低，出现血栓的风险就越高。本次研究的大部分患者都没有其他会导致血栓的风险因素，他们患血栓高风险的原因可能是，他们鼻子和肠道的毛细血管经常出血，血液中的铁元素流失，增加了血栓风险。研究还发现，部分患者服用补铁药物后出现血栓的风险就相对低很多。
Flight-related complications are infrequent in patients with hereditary haemorrhagic telangiectasia/pulmonary arteriovenous malformations, despite low oxygen saturations and anaemia
Mason, Christopher G; Shovlin, Claire L
Individuals with pulmonary arteriovenous malformations (PAVMs) and hereditary haemorrhagic telangiectasia (HHT) commonly have low oxygen saturations and anaemia, two parameters generally used to indicate medical fitness to fly. Using a retrospective questionnaire-based study, the authors examined in-flight complications and predictors in 145 HHT patients (96 with PAVMs) who reported 3950 flights, totalling 18 943 flight hours. Dyspnoea and thrombotic complications were less common than expected, and could not be predicted from sea level oxygen saturations or haemoglobin concentrations. Nosebleeds that can bar individuals from boarding a flight occurred in 13.6% (11.5% to 15.8%) of long-haul flights. The findings should influence preflight advice.
