WHAT YOU SHOULD KNOW ABOUT FEVER! (PART 1) - DR. KARISHMA MANE Fever or Pyrexia as it is known in the medical world is not a disease by itself. Fever is a symptom manifested by an underlying disease. Fever is not the real enemy in fact most of the times it is part of the human body's fight back mechanism. Fever is defined as an increase of more than 1degree or any rise above maximal normal body temperature. The average normal body temperature is 98.6 ° F normally as well the body temperature shows fluctuations related to age, time of the day etc. In fact in a lot of people normal body temperature can range from 97°F to 99° F. Body temperature is regulated by a thermostat -the hypothalamus situated at the base of the brain. What causes fever---------- Exogenous (from outside the body like bacteria virus etc) causes infect the human being which are detected by the immune system and certain pyrogens are released in the process which stimulate the hypothalamus to increase body temperature i.e. cause fever as these infective agents are destroyed by the immune system fight back mechanisms. Endogenous causes (those that arise within the body like connective tissue disorders, tissue destruction, etc) also can cause fever but the mechanism involves more of antigen-antibody reaction. Fever can also occur as a result of various endocrine, metabolic disorders, trauma, drug reactions etc. Ascertaining the cause of fever is the doctor's job and best left to them. What happens with fever------ When fever starts and the human body tries to elevate temperature, you feel chilly and may shiver to generate heat. At this point, you probably wrap yourself in your thickest blanket and turn up the heating pad. But eventually as your body reaches its new set point you are likely to feel hot. And when your temperature finally begins to return to normal then you may sweat as the body dissipates the heat. How to measure temperature in fever---- a) Measuring axillary temperature (under the armpit) for fever—Axillary temperature can be measured with a standard clinical mercury thermometer placed under the armpit for minimum of 2 minutes. Axillary temperature is 1° lower than oral temperature. b) Measuring oral temperature for fever--- Oral temperature is measured by a clinical thermometer placed under the tongue for at least 2 minutes. Avoid hot or cold drinks for at least 20 minutes before oral temperature measurement. c) Measuring fever by rectal thermometer—In case of infants (baby less than one year of age) rectal temperature is measured. Rectal temperature will read approximately 1° higher than simultaneously obtained oral temperature. The pediatrician should be requested to show the method of rectal temperature measurement. d) Measuring fever with a digital thermometer--- A faster time saving method. Only care should be taken to see that it is working accurately. A well- maintained temperature record that notes the timing, duration and degree of temperature is of great help to the doctor in diagnosing the cause of fever Care during fever------ During the fever once the temperature is measured after the chills if they appear, a suitable fever reducing medication administered following care measures should be taken---- a) Remove excess clothing or blankets from the body of the patient once the chills or shivering stops. One layer of light- weight preferably cotton clothing and one light- weight covering should be provided to the patient. b) The room temperature should be comfortable. If the room is hot and stuffy a fan can help improve ventilation. c) A tepid /lukewarm water bath or a sponge bath lasting for 5 to 10 minutes helps cool someone with fever especially effective in reducing fever after medication is given. d) Ice water or cold water baths to be avoided as though they cool the skin, they cause shivering which again increases body temperature. e) Small feedings of soft or liquid diet as desired should be offered at frequent intervals. f) Plenty of liquids should be consumed to replace the fluid loss due to sweating. Part 2 of the same topic we shall look at how we can help the doctor detect the cause of fever i.e reach a DIAGNOSIS and DIET DURING FEVERS. |
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