Vital signs

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See critical care quick reference for vital signs by weight.

Normal Adult Vital Signs

Heart Rate 60 - 100 bmp
Respiratory Rate 10 - 20 rpm
Systolic BP 90 - 140 mmHg
SaO2 ≥95%[1]


  • Fever directly causes an increase in:[2]
    • Heart rate: 10 beats per minute per degree centigrade
    • Respiratory rate

See Also


  1. ATS/ACCP Statement on cardiopulmonary exercise testing. American Thoracic Society, American College of Chest Physicians. Am J Respir Crit Care Med. 2003;167(2):211. PMID 12524257
  2. Davies P, Maconochie I. The relationship between body temperature, heart rate and respiratory rate in children. Emerg Med J. 2009 Sep;26(9):641-3. doi: 10.1136/emj.2008.061598.