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In humans, hyperthermia is defined as a temperature greater than 37.5–38.3 °C (99.5–100.9 °F), depending on the reference used, that occurs without a change in the body's temperature set point. [3] [10] The normal human body temperature can be as high as 37.7 °C (99.9 °F) in the late afternoon. [2]
[18] [19] [20] High blood pressure affects 33% of the population globally. [9] About half of all people with high blood pressure do not know that they have it. [9] In 2019, high blood pressure was believed to have been a factor in 19% of all deaths (10.4 million globally). [9] Video summary
A child aged 1–3 years old can have a heart rate of 80–130 bpm, a child aged 3–5 years old a heart rate of 80–120 bpm, an older child (age of 6–10) a heart rate of 70–110 bpm, and an adolescent (age 11–14) a heart rate of 60–105 bpm. [12]
Reference ranges for blood pressure (BP) in children [29] Stage Approximate age Systolic BP, mmHg Diastolic BP, mmHg Infants 0–12 months: 75–100: 50–70 Toddlers and preschoolers 1–5 years: 80–110: 50–80 School age 6–12 years: 85–120: 50–80 Adolescents 13–18 years: 95–140: 60–90
Using the results of the blood pressure test, the health care provider will diagnose prehypertension or high blood pressure if: For an adult, systolic or diastolic readings are consistently higher than 120/80 mmHg. A child's blood pressure numbers are outside average numbers for children of the same age, gender, and height. [39]
[12] [15] Therefore, an oral temperature of 37.3 °C (99.1 °F) would, strictly speaking, be a normal, healthy temperature in the afternoon but not in the early morning. [15] An individual's body temperature typically changes by about 0.5 °C (0.9 °F) between its highest and lowest points each day.
Labile hypertension occurs when there are unexpected changes in blood pressure.The term can be used to describe when people have blood pressure measurements that abruptly fluctuate from being abnormally high, approximately 140/90mm Hg or over and returns to its normal range.
[4] [5] [2] Symptoms in mild cases include high blood pressure and a fast heart rate; usually without a fever. [2] Symptoms in moderate cases include high body temperature, agitation, increased reflexes, tremor, sweating, dilated pupils, and diarrhea. [1] [2] In severe cases, body temperature can increase to greater than 41.1 °C (106.0 °F). [2]