Nielsen T G, Bakholdt V T
Medicinsk og Kirurgisk Afdeling, Middelfart Sygehus.
Ugeskr Laeger. 1991 Dec 9;153(50):3541-3.
The electronic thermometers for oral use employed in Middelfart Hospital (Ivac, TN III and Crafttemp) were compared with mercury thermometers for rectal use. Employment of all the thermometers in question in a water bath revealed considerable accuracy where the mercury thermometers were concerned but considerable divergence and deviations where the electronic thermometers were concerned and this was particularly marked with increasing temperature. Pyrexia is defined as temperature greater than or equal to 37.0 degrees C orally and greater than or equal to 37.5 degrees C rectally. In the clinical investigation of the ability of establishing the diagnosis of pyrexia in 147 patients a true negative diagnostic frequency (diagnostic sensitivity) for the electronic thermometers was found to be 0.94 as compared with the mercury thermometers employed rectally which is considered to be satisfactory as a screening method but, with the limits chosen, a true positive diagnostic frequency (diagnostic specificity) of 0.37 was found. No significant differences in the median temperature were found as regard age greater than or equal to 70 years or prostheses in the lower jaw. It is recommended that a raised temperature on oral measurement with the thermometers mentioned above should be controlled with rectal measurement with a mercury thermometer.
对米德尔法特医院使用的电子体温计（Ivac、TN III和Crafttemp）与直肠用汞体温计进行了比较。将所有这些体温计放在水浴中使用时，汞体温计显示出相当高的准确性，但电子体温计则存在较大的差异和偏差，且随着温度升高这种情况尤为明显。发热的定义为口腔温度大于或等于37.0摄氏度，直肠温度大于或等于37.5摄氏度。在对147名患者进行发热诊断能力的临床研究中，发现电子体温计的真阴性诊断频率（诊断敏感性）为0.94，与之相比，直肠使用的汞体温计作为一种筛查方法被认为是令人满意的，但在所选择的限度内，发现其真阳性诊断频率（诊断特异性）为0.37。在年龄大于或等于70岁或下颌有假体的患者中，未发现中位温度有显著差异。建议用上述体温计进行口腔测量时出现体温升高的情况，应使用汞体温计进行直肠测量加以核实。
