As the morning unfolds you are unaware of a Search and Rescue (S.A.R) operation occurring near your station in a heavily wooded National Park. Local S.A.R teams, firefighters and park officials have searched throughout the night for a 25-year-old inexperienced hiker who was last seen at 1600 hours last afternoon moving off of marked trails. As you complete your morning inspections, your pager and radio requests you to respond hot to a S.A.R scene where a male patient is “hypothermic” and authorities on scene are requesting EMS support.
After a 20-minute response to this remote scene you are lead the hiker, who is lying supine in a nearby rescue vehicle on supplemental oxygen and being monitored by First Responders.
Assessment reveals a patient who responds to loud verbal stimuli and has difficulty speaking. Head to toe exam shows no trauma, he is having difficulty moving and is quite cold to the touch, skin is pale with obvious tissue damage noted on both hands (skin appears white but is soft beneath). Airway is patent, he has a respiratory rate of 8 (shallow but regular), a carotid pulse of 32 (irregular and weak) and after several attempts you obtain a BP of 50/35.
Vitals
1.Hypothermia is classed as any core temperature (degrees Celsius) less than:a. 25b. 35c. 32d. 38
2.The most common way we lose heat from our bodies is by:a. convectionb. conductionc. radiationd. evaporatione. all of the above
3.Based on findings, this patient appears to be in:a. mild hypothermiab. moderate hypothermiac. severe hypothermia
4.“Systemic Hypothermia” occurs when:a. the body fails to re-warm itselfb. core temperature falls below 35 degreesc. shivering and shaking ceasesd. patient becomes unconscious
5.a. Shakinga. Shakingb. Peripheral vasoconstrictionc. Decreased level of consciousnessd. Increased heart rateis the initial response to conserve core heat:
6.What percentage of body heat is generated by muscle contraction:a. 25b. 40 c. 50d. 80
7.Muscle shaking and shivering ceases due to:a. oxygen deficit within the tissueb. depleted glucose/glycogen storesc. decreased blood flow due to vasoconstrictiond. excess amounts of lactic acid in the muscle fibers.
8.This region of the brain helps to regulate the body’s temperature:a. hypothalamusb. medullac. ponsd. cerebellum
9.Secondary to hypothermia, you have also found this patient is suffering from:a. frost nipb. superficial frostbitec. deep frost bite
10. Proper care of this injury would include:a. lowering the extremityb. encourage the patient to move the affected area as much as possible to encourage circulationc. elevate the extremity and prevent further damage or heat lossd. vigorously rub and re-warm the site
11. For this patient, the most appropriate care would include:a. rapid but gentle transport, warm sponge bath en route and high flow oxygen.b. rapid hut gentle transport, warmed high flow oxygen, avoiding aggressive re-warming (in the prehospital environment), prevent further heat loss and monitor vital signs.c. provide warm coffee to the patient, remove all clothing and aggressive’ re-warming.d. warm the patient on scene then transport.
12. Cardiac and/or respiratory arrest are common as core temperature approaches degrees Celsius.a. 15b. 20c. 30.5d. 18.4
13. A. CNS depressionB. Ventricular fibrillationC. Pulmonary edemaD. Seizure is known as the most common cause of death in hypothermic patients:
14. As per A.H.A. / A.C.L.S. guidelines, hypothermic cardiac arrest patients should be defibrillated no more than three times (if indicated) prior to active re-warming.a. Trueb. False
15. Which of the following patients will usually become hypothermic the fastest:a. 45-year-oldb. 14-year-oldc. 85-year-oldd. all are equally susceptible
Please keep in mind the answers to these questions are to industry standards and may not necessarily be correct according to local protocol. If there is any discrepancy between these answers and local protocol, please follow the protocol for your area as set out by your Medical Director.
Submitted by Phil Stewart and Rob Keough. Both are currently studying Paramedicine 3 at Holland College in Charlottetown P.E.I. To offer feedback oil the quiz or for information on the Paramedic Program at Holland College, email us at: mailto:spstewart@ ccgw.cc.hollandc.pe.ca
This Article is reprinted by permission from and the Canadian Emergency News. It originally appeared in the December 1999 / January 2000 issue (volume 22, number 6).
Chuck Chivers
1-519-542-8306 Sarnia, Ontario ve3vsa@rac.ca Copyright © August, 1998, Chuck Chivers Revised -- Tuesday, July 16, 2002 12:06:23 http://www.sarnia.com/groups/paramedics/v22n6cs.html