PRACTICAL PET-ANIMAL MEDICINE (PTR) Dr/ Abd Elghany Hefnawy
Clinical examination of body temperature Dr / Abd Elghany Hefnawy
1- Physiological aspect on the body temperature 2-Internal body temperature 3-Clinical significance of taking of body temperature Points of studying
-Higher animals are homeothermal (What means) 1-Physiological aspect on the body temperature Maximum efficiency of thermoregulation occurred by combined action between Thermoreceptores which present on the skin and certain mucous membranes Thermodetectores that present on the hypothalamic part of the brain. +
Thermoregulatory mechanism mainly -Hypothalmus -Thermoregulatory center -Thyroid hormone -Glucagon Neural Hormonal Regulation of heat production and loss mechanisms
Main organs of heat production Skeletal muscles (80%) Liver and heart Heat loss -Vaporization -Sweating (not in pets) -Radiation -Respiration
2-Internal body temperature The internal body temperature that detected clinically is not indicator to the total heat production in the body, but it is indicator to the steady stage of the thermal balance in the body between the heat loss and heat production in the body.
The body temperature in the animal taken rectally by using of the clinical blunt bulb thermometer. If cannot be done rectally?
Purchase a digital pet thermometer at your local pet supply store. 1
-Cutaneous capillaries constriction which leads to dryness and coldness of the skin in addition to:- - Decreased respiration -Decreased urine volume -Increased heart rate -Shivering of the skeletal muscles. (I)-Increment or onset stage
(II)- Fastigium (acme) or steady stage -Temperature is Constant and the demand of the heat Production is subsided while the heat loss is increased that reflected in the Form of peripheral vasodilatation -(Congested mucous membranes) -In this stage if the animal exposed to changes in the environmental Temperature it may lead to alteration of the body temperature.
-Effect of the pyrogen is ceased or diminished after the localization of the infective microorganism in its predilection sit (i.e..after the end of the stage of vireamia or bacteremia) then the stored heat is dissipated and -The body temperature is fall to normal level accompanied with flaccidity in the muscles and peripheral vasodilatation (as a mechanism of heat loss). (III)-Decrement or Defervescence Stage
Classification of fever Causes Degree Septic fever (Virus or bacteria) Aseptic fever (Vaccination, tearing of tissue or surgical wound) Low (Laryngitis) Moderate(Pneumonia) Sever (peritonitis)
وسائل التواصل Email: email@example.com@yahoo.com Abdelghany.firstname.lastname@example.org Facebook abdelghany hefnawy د. عبد الغني حفناوي Web site to download lectures www.bu.edu.eg/staff/abdelghanyhefnawy www.bu.edu.eg/staff/abdelghanyhefnawy (Courses) Tel 01011676482
Clinical examination of respiration in pets Dr / Abd Elghany Hefnawy