Morley C J, Thornton A J, Fowler M A, Cole T J, Hewson P H
Department of Paediatrics, University of Cambridge.
Arch Dis Child. 1990 Aug;65(8):834-7. doi: 10.1136/adc.65.8.834.
This paper defines the normal range of respiratory rate in babies under 6 months of age. It was counted by two observers in 1007 babies of whom 709 were seen when presenting to hospital for assessment of an acute illness, and 298 on a random basis at home. Whether they were asleep, content, or crying was recorded and the severity of their illness graded. The diagnosis was also recorded. The mean (SD) for the respiratory rate in babies seen awake was 61 (18) breaths/minute at hospital and 61 (14) breaths/minute at home. The respiratory rate when awake did not correlate with the severity of a baby's illness or the presence of serious lower respiratory tract infections. Sleeping babies had a significantly lower mean rate than awake babies at 42 (12) breaths/minute. Crying babies had a significantly lower mean rate than awake and content babies: 51 (14) breaths/minute compared with 61 (18) breaths/minute.
本文定义了6个月以下婴儿呼吸频率的正常范围。两位观察者对1007名婴儿进行了计数，其中709名是在因急性疾病到医院就诊时观察的，298名是在家中随机选取的。记录他们是 asleep、安静还是哭闹状态，并对其疾病严重程度进行分级。还记录了诊断结果。在医院观察到的清醒婴儿的呼吸频率平均（标准差）为61（18）次/分钟，在家中为61（14）次/分钟。清醒时的呼吸频率与婴儿疾病的严重程度或严重下呼吸道感染的存在无关。睡眠中的婴儿平均呼吸频率明显低于清醒婴儿，为42（12）次/分钟。哭闹的婴儿平均呼吸频率明显低于清醒和安静的婴儿：分别为51（14）次/分钟和61（18）次/分钟。 （注：原文中“asleep”未翻译完整，推测可能是“睡着的”意思，这里按此意思补充完整了翻译内容）
