Which of the following best describes how x-rays are actually produced in the dental x-ray tube?
A) Radioactive particulate matter undergoes controlled disintegration.
B) Electrical current passes through an oil mixture, creating minute explosions.
C) Low milliamperage current is transformed to high kilovoltage current.
D) High-speed electrons collide with target material electrons.
D
Explanation: A) When the high-velocity electrons are stopped or slowed as they collide with the tungsten atoms in the target, the result is the production of general radiation (bremsstrahlung) and/or characteristic radiation.
B) When the high-velocity electrons are stopped or slowed as they collide with the tungsten atoms in the target, the result is the production of general radiation (bremsstrahlung) and/or characteristic radiation.
C) When the high-velocity electrons are stopped or slowed as they collide with the tungsten atoms in the target, the result is the production of general radiation (bremsstrahlung) and/or characteristic radiation.
D) When the high-velocity electrons are stopped or slowed as they collide with the tungsten atoms in the target, the result is the production of general radiation (bremsstrahlung) and/or characteristic radiation.
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The wife of a 57-year-old male called 911 because he had chest pain. Which of the following pieces of information would be included in your SBAR report at the hospital?
A) "… the call originated at the address to which we responded…" B) "… the police were called after a neighbor complained about where the ambulance was parked" C) "… I am thinking that the patient would benefit from 324 mg of aspirin …" D) "… his wife also has a history of high blood pressure, so it appears to run in the family"
A woman fell from a second-story window onto the concrete sidewalk below. She is unresponsive and has a large depression to the back and top of her skull. Additional findings include abdominal bruising and an angulated left ankle. Your partner reports that the patient's vital signs are pulse, 68 beats/min; respirations, 14 breaths/min and irregular; blood pressure, 198/112 mmHg; and SpO2, 91% on room air. Based on these assessment findings, what should the EMT suspect is occurring?
A) Shock caused by bleeding within the head B) Shock caused by bleeding, most likely in the abdomen C) Severe head injury with increasing pressure within the skull D) Past medical history of untreated hypertension
_____ is the language of medicine
A) English B) Latin C) Greek D) Medical terminology
The Fire Command Station communication system should be capable of two-way voice communication between the fire command station and the following location(s)
A. a designated floor warden station on each floor B. mechanical control center and air-handling control rooms C. elevators and elevator machine rooms D. all of the above