COLD INJURIES Flashcards
1
Q
Pathophysiology
A
- Crystals intra and extracellular
- Stasis and thrombosis
- Shunting of blood to normal tissue
2
Q
Physiological heat conservation
A
- Shivering
- Non shivering thermogenesis
- Vasoconstricton
- Muscle contraction
3
Q
What temperature is considered hypothermia
A
35°c
4
Q
FROST NIP
A
- Firm cold and white ares -> blistering and peeling
- Warm with other hand before numbness sets in
5
Q
Immersion foot aka
A
Trench foot
6
Q
Immersion foot
A
- In cold and wet
- Feet- cold, edematous and numb
- Tissue maceration and infection
- Autonomic dysfn: sweating, pain, temperature hypersensitivity
7
Q
frost bite
A
- Stinging and ache
- Cold white hard numb
- Reperfusion- blotch and red
8
Q
Frost bite - treatment
A
- Warming
- No freezing and re thaw - poor outcome
- Dip in water -42°c
- Prazosin and phenoxybenzamine
- Anticoagulant
- Oxygen
- Chemical and surgical sympathectomy
- Analgesia
9
Q
Final symptom of hypothermia
A
Bradycardia
10
Q
Hypothermia - diagnosis
A
<34°c rectal temperature
11
Q
Hypothermia treatment
A
- Vaseline
- Bath 45-48°c
3 external warming - Warm O2
5 peritoneal lavage
6 ecmo
7 esophageal warming
12
Q
Hypothermia - classification
A
- Mild - 34-36°c
- Moderate - 30-34°c
- Severe -< 30°c
13
Q
When to stop rewarming
A
- Rosc
- Temp >35
- When you stop resus
14
Q
Hypothermia without pulse
A
- 3 shock
- IV drugs above 30°c
- CPR
- Warm o2
15
Q
Chillblain aka
A
Pernio
