A medical assistant should take which of the following actions when placing electrodes on a patient for an EKG?
Place the arm electrodes facing downward.
Place the electrodes over bony prominences when possible.
Place the leg electrodes downward.
Place the chest electrodes in a straight line just below the nipple.
The Correct Answer is A
A. Place the arm electrodes facing downward. The arm electrodes should be placed with the tabs facing downward to reduce the risk of artifacts on the EKG tracing caused by movement or improper lead contact.
B. Place the electrodes over bony prominences when possible. Electrodes should not be placed over bony prominences, as this can interfere with the accuracy of the EKG reading. Instead, they should be placed on soft tissue.
C. Place the leg electrodes downward. Leg electrodes should also be placed with the tabs facing downward to prevent artifacts, similar to the arm electrodes.
D. Place the chest electrodes in a straight line just below the nipple. Chest electrodes should be placed according to specific anatomical landmarks, not in a straight line, to ensure accurate heart rhythm tracing.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. American National Standards Institute (ANSI): ANSI is involved in developing and promoting standards but does not specifically focus on hazardous chemical disposal.
B. Occupational Safety and Health Administration (OSHA): OSHA provides guidelines and regulations for workplace safety, including the proper disposal of hazardous chemicals.
C. Centers for Medicare and Medicaid Services (CMS): CMS oversees healthcare quality and insurance but does not provide guidelines for hazardous chemical disposal.
D. Centers for Disease Control and Prevention (CDC): The CDC focuses on public health and disease prevention but does not provide specific guidelines for hazardous chemical disposal.
Correct Answer is B
Explanation
A. Capillary blood: Capillary blood can be used in some cases, especially in infants, but it is less accurate than arterial blood for measuring blood pH and gases.
B. Arterial blood: Arterial blood is the correct sample for measuring blood pH and gases (such as oxygen and carbon dioxide levels) because it reflects the gas exchange occurring in the lungs.
C. Venous blood: Venous blood is not typically used for measuring blood gases as it does not accurately reflect the oxygenation status of the body.
D. Cerebrospinal fluid: Cerebrospinal fluid is not used for measuring blood pH and gases; it is typically analyzed for conditions affecting the brain and spinal cord.
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