Because such "beating heart" surgery causes little pain and does not require general anaesthesia or blood thinners, patients are back on their feet much faster than usual.

因为这种“心脏持续跳动”手术不会产生痛楚，不需要普遍的麻醉和血液稀释，所以病人恢复得比平常要快。

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Mortality from general anaesthesia alone is reported to be as high as one in 150 in parts of sub-Saharan Africa.

据报道，在撒哈拉以南非洲的部分地区，仅全身麻醉的死亡率就高达一百五十分之一。

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The patient developed acute, sudden, severe facial pain and swelling necessitating emergency admission to hospital and operative intervention under general anaesthesia.

病人急性，突发性，严重的面部疼痛和肿胀需要紧急入院及手术全身麻醉下进行干预。

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Professor Khan is confident that the new technique will be particularly useful for patients who are at risk under a general anaesthesia.

BBC: heart op

In an interview with the BBC, Professor Khan credited the success of the operation to his anaesthetist, Dr Mubashir Zia, who he said had made the operation possible by rendering the spine numb using an epidural, rather than by general anaesthesia.

BBC: heart op

Warren Zapol, of the Massachusetts General Hospital and a professor of anaesthesia at Harvard Medical School, along with his colleagues, monitored the vital signs of mice exposed to low-dosages (80 parts per million) of hydrogen sulphide for several hours.

ECONOMIST: Researchers find hydrogen sulphide can lower metabolism