In first-degree heart block, the electrical current is delayed or blocked along normal conduction pathways ________.
A. Above the SA node
B. In the ventricles
C. Below the AV junction
D. At or above the AV junction
Answer: D
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Which statement shows that the EMT understands the use of a tourniquet in controlling bleeding?
A) "A tourniquet should be applied tightly enough so that arterial blood flow distal to the tourniquet is completely stopped." B) "If the tourniquet appears to have stopped the bleeding, the EMT should loosen it slightly to allow a small amount of blood to perfuse the tissues." C) "If a blood pressure cuff is used as a tourniquet, the EMT should inflate it approximately 50 mmHg above the patient's systolic blood pressure." D) "Since arteries run close to the body's surface in a joint, the best place to apply a tourniquet is over the joint just above the site of hemorrhage."
A gram-negative coccobacillus that grows on sheep blood and chocolate agars but not MacConkey agar, is oxidase and catalase positive, and emits a musty odor will be
A) a yellow-orange pigmented colony. B) normal oral flora of humans. C) indole positive. D) a swarming colony.
OSHA standards include all of the following except ________.
A. bloodborne pathogens B. transmission-based precautions C. standard precautions D. accommodations for the disabled E. education and training
How long must the ECG tracing be maintained as part of a patient's medical record?
A. 3 years B. 10 years C. 15 years D. 7 years