The principle way dry chemical agent extinguishes fire is through the interruption of ______________
a. pyrolysis
b. heat of vaporization
c. decomposition of extinguishing agent
d. chemical chain-breaking reactions
d
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Which of the following patients should NOT have their airway opened using a head-tilt, chin-lift maneuver?
A) A homeless person of undetermined age found lying unresponsive in an alley with no bystanders. B) A 35-year-old diabetic woman who is in the driver's seat of the car in her driveway, who becomes unresponsive while speaking to her husband. C) A 50-year-old woman who choked on a piece of food while dining in a restaurant and was lowered to the floor by a waiter. D) A 25-year-old man who is still unresponsive after a grand mal seizure.
What is suggested by inverted T waves on the ECG?
a. Atrial enlargement b. Myocardial ischemia c. Ventricular hypertrophy d. Dextrocardia