Orthodontic stone is a mixture of _______ and ________
quick-set stone and plaster
plaster and calcium carbonate
class II stone and quick-set stone
class I stone and plaster
class I stone and plaster
Rationale: class I stone and plaster – This creates a harder, more durable stone for orthodontic casts.
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You are responding to a 52-year-old male patient complaining of heartburn with epigastric pain. The patient's vital signs are stable and he does not have any pain upon palpation. He has a history of reflux disease and is on several medications for heartburn and acid reflux. What is your greatest concern with this patient?
A) He will develop peritonitis. B) He is suffering from a myocardial infarction. C) He will aspirate on vomit. D) His appendix will rupture.
A 20-year-old waitress spilled hot coffee and burned her right forearm. When assessing the burn, you note a full-thickness burn surrounded by partial-thickness burns. She complains of pain in the surrounding partial-thickness burn, but not in the center where the full-thickness burn is located. As an EMT, you recognize that the patient does not localize pain to the center of the burn because of:
A) destruction of pain receptors in the epidermis. B) injury to pain receptors in the subcutaneous layer. C) damage to pain receptors located in the dermis. D) destruction of the epidermal nerve endings.
While assessing a patient with acute abdominal pain, you note that his abdomen is very rigid. When asked to relax his stomach muscles, he does. The EMT would recognize:
A) voluntary guarding. B) rebound guarding. C) false guarding. D) involuntary guarding.
Which of the following BEST describes the process taken at flammable gas incidents if gas is burning?
A. Extinguish burning flame B. Request mutual aid extrication teams C. Use hose streams to protect exposures if needed D. Monitor, but do not shut off pressurized gas supply