The patient's temperature was 38.8°C (101.9°F), the blood pressure was 126/68 mm Hg, the pulse rate was 95 beats per minute, and the respiratory rate was 16 per minute.

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Given the patient's high temperature, I would have expected a faster pulse rate. Although this is a young man who may have a vigorous cardiovascular system and thus a slower heart rate, a temperature–pulse dissociation may occur with any type of enteric fever or atypical pneumonia, such as Q fever, legionellosis, and chlamydial pneumonia. However, the most common reasons for a normal heart rate in a febrile patient are the use of beta-blockers and pacemakers, as well as just normal variation. Thus, this finding may not be useful. NEJM Back to the Basis

比較的徐脈

発熱の程度のわりに脈拍数が少ないことを言う。チフス、レジオネラ、クラミジアなどの細胞内寄生体による感染症の特徴である。以下の目安がよく引用されるが、少し厳しすぎる印象がある。

脈拍数＜Ｔ×１０−３２３　（Ｔ℃のとき）

（感染症レジデントマニュアルＰ．１４２）