Shock, bradycardia and irregular breathing are important predictive signs, and severe malaria with respiratory distress is a common cause of hypoxaemia.

休克、心动过缓和呼吸不规则是重要的预示性症状，伴有呼吸窘迫的严重疟疾是低血氧症的常见原因。

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Patients had an obvious history of living in malaria-endemic areas. Most patients had irregular fevers and did not have typical clinical symptoms.

病人均有明确的疟区生活史，大部分病人热型不规则，临床症状不典型。

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