Which of the following should a medical assistant recognize as an indication to prematurely terminate a patient's exercise stress test?
Sweating
Bradycardia
Palpitations
Thirst
The Correct Answer is B
A. Sweating: Sweating is a normal physiological response to exercise and is not an indication to terminate the test.
B. Bradycardia: Bradycardia (abnormally slow heart rate) during an exercise stress test can indicate a serious problem and may require premature termination of the test.
C. Palpitations: Palpitations can occur during exercise, but they are not necessarily a reason to terminate the test unless accompanied by other symptoms or abnormalities.
D. Thirst: Thirst is not a contraindication for continuing an exercise stress test.
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Correct Answer is D
Explanation
A. Yellow: The yellow tube, used for blood cultures, is typically collected first to prevent contamination.
B. Light blue: The light blue tube is used for coagulation studies and should be collected before tubes containing additives that could interfere with coagulation tests.
C. Red: The red tube, which may contain no additives or a clot activator, is usually collected after the light blue tube.
D. Gray: The gray tube is used for glucose testing and should be filled last as it contains additives that could interfere with other tests if collected earlier.
Correct Answer is A
Explanation
A. Wrapping hinged instruments in the open, unlocked position: Hinged instruments should be wrapped in the open, unlocked position to ensure that steam can penetrate all surfaces for effective sterilization.
B. Allowing the temperature of the autoclave to reach 200° F before timing: The autoclave should reach the required temperature (typically 250°F or 121°C) for the appropriate amount of time for sterilization, not 200°F.
C. Using a ballpoint pen to label contents: It is not advisable to use a ballpoint pen for labeling sterilized items because ink might not withstand the autoclave's high temperatures. Permanent markers or labels that can endure high temperatures should be used.
D. Stacking wrapped packages tightly into the autoclave: Items should be arranged in a way that allows steam to circulate freely, so tightly stacking packages can hinder proper sterilization.