An 82-year-old woman was admitted electively for surgical stabilisation of a persistently painful osteoporotic fracture of T12 vertebra She had a history of kyphosis with two previous osteoporotic fractures at T8 and T9 treated by kyphoplasty. She was noted to be persistently hypoxic with saturations of 80% on room air. She required 4 L/min of oxygen to maintain her saturations at >94%. There was no platypneoa-orthodeoxia. She had no history of significant cardiorespiratory disease, was an ex-20 pack year smoker and denied breathlessness. Cardiorespiratory examination was normal apart from moderate kyphosis. Figure 1 Colour flow doppler revealing shunt from right to left atria across a patent foramen ovale (white arrow); Left atrium= LA, Right atrium= RA and interatrial septum= IAS Chest radiograph was normal as was spirometry with a forced expiratory volume (FEV1) of 132% predicted, forced vital capacity (FVC) of 145% predicted with an FEV …

中文翻译：

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术前低氧血症异常病例

一名 82 岁妇女因 T12 椎体持续疼痛性骨质疏松性骨折的手术稳定而择期入院。她有脊柱后凸病史，之前在 T8 和 T9 时两次骨质疏松性骨折接受过椎体后凸成形术治疗。注意到她持续缺氧，室内空气的饱和度为 80%。她需要 4 L/min 的氧气来维持她的饱和度 > 94%。没有扁平呼吸-正氧。她没有严重的心肺疾病病史，吸烟 20 年，否认呼吸困难。除中度后凸畸形外，心肺检查均正常。图 1 彩色血流多普勒显示卵圆孔未闭从右心房向左心房分流（白色箭头）；左心房 = LA,