thermoregulation ppt
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| What is the goal of thermoregulation? | show 🗑
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| Vasodialation, sweating, pilorelaxation,and stretching are a response to what? | show 🗑
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| show | Cold Temperature
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| show | Shivering Thermogenesis
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| show | The SNS- it targets the BAT (brown adipose tissue) and skeletal muscle
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| What is that primary thermogenic tissue in adults? | show 🗑
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| show | BAT (brown adipose tissue)
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| show | Radidation 60%, Evaporation 20%, Convection 15%, and Conduction 5%
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| What type of heat is lost by photons and without physical contact with an object? | show 🗑
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| How is evaporation heat loss prevented? | show 🗑
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| In the evaporation mechanism, where is at least half of the heat lost? | show 🗑
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| Which mechanism is heat lost through direct contact with cooler objects? | show 🗑
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| show | Since it's direct heat loss, put things under the pt to protect from cold OR table.(MB slide also says increase ambient temperature, forced warm air, warm solutions)
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| Relating to convection which has a higer specific heat water or air? | show 🗑
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| Afferent tempreture sensors relate to which system Central or Peripheral? | show 🗑
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| show | Krauses end bulb : Encapsulated receptor located in connective tissue. Range of stimulation is 15 - 25 degrees Celcius. Anything below these temps are active pain receptors
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| show | Ruffinis corpuscle: encapsulated receptor located in the subcutaneous tissue. range of stimulation 25-45 degrees celcius
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| show | Cold
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| _______sensations are transmistted to the spinal cord by unmylinated C nerve fibers. | show 🗑
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| show | Perpheral temperature sensors
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| show | Once the skin reaches maximum variability.
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| show | Neurologic and endocrine
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| show | SNS
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| show | Posterior hypothalamus
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| What is the most important mechanism for transfering heat from the core to the periphery? | show 🗑
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| Heat transfer from blood to tissues is what mechanism? | show 🗑
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| show | evaporation
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| ____causes and increase of cardiac mortality, post-op infection, and an increase in recovery time and hospital lenght of stay. | show 🗑
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| During hypothermia what happens to the respiratory system? | show 🗑
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| A body temp of 32-33 degrees celcius would lead to what? | show 🗑
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| A body temp of 22-24 degress celcius would lead to what ? | show 🗑
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| show | increased HR, BP, and CO
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| show | atrial and ventricular irritability
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| show | sinus bradicardia and v-fib very likely
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| show | risk of v-fib very high
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| A body temp of < 20 degrees C would lead to what? | show 🗑
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| show | 7%
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| MAC decreases what percentage for each degrees C drop? | show 🗑
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| During hypothermia what happens to uring output? | show 🗑
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| show | Between 33-35 degrees C
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| What happens to the the hematologic function during hypothermia? | show 🗑
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| What are contributors to intra-operative hypothermia. | show 🗑
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| Who loses more heat? infants or children | show 🗑
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| show | they have a thin sub cutaneous layer of insulation and also due to large ventilatory minute volume
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| True or False: Aging decreases the ability to compensate for heat loss. | show 🗑
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| show | Tympanic- it is the closest to core temp d/t location being close to the hypothalmus.
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| How long does it take to get a true axillary temp? | show 🗑
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| show | PA catheter, mixed venous blood, but core temp can be effected by CT surgery
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| What are active warming methods we utilize? | show 🗑
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| show | heated humidifiers, gastric lavage, peritoneal irrigation, fluid warmers (can heat to 42 degrees C with out causing hemolysis)
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| What are passive warming methods we can utilize? | show 🗑
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Created by:
chrisysue7
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