In the conduction system of the heart, which of the following components is stimulated after the sinoatrial node?
Left bundle branch
Purkinje fibers
Right bundle branch
Atrioventricular node
The Correct Answer is D
A. Left bundle branch: The left bundle branch is stimulated after the atrioventricular node and bundle of His, not immediately after the sinoatrial node.
B. Purkinje fibers: The Purkinje fibers are stimulated later in the conduction pathway, after the bundle branches.
C. Right bundle branch: The right bundle branch is also stimulated after the atrioventricular node and bundle of His.
D. Atrioventricular node: After the sinoatrial node initiates the heartbeat, the electrical impulse travels to the atrioventricular node, which then passes the signal to the bundle of His and down to the bundle branches.
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Correct Answer is C
Explanation
A. 99.6°F: This temperature is higher than expected for an axillary reading. Axillary temperatures are generally lower than oral temperatures.
B. 98.6°F: This reading matches the oral temperature. However, axillary temperatures are usually lower by approximately 1°F compared to oral temperatures.
C. 97.6°F: This is the correct answer because axillary temperatures tend to be about 1°F lower than oral temperatures.
D. 96.6°F: This reading is lower than typically expected for an axillary temperature and would indicate hypothermia, which is not expected if the oral temperature was normal.
Correct Answer is B
Explanation
A. Implied consent: Implied consent is typically used in emergency situations where verbal or written consent cannot be obtained and is not suitable for elective procedures like a colonoscopy.
B. Informed consent: For a colonoscopy, which is an invasive procedure, informed consent is required. This involves providing the patient with detailed information about the procedure, its risks, benefits, and alternatives.
C. Prior authorization: Prior authorization is related to insurance coverage and is not typically obtained by the medical assistant; it is usually handled by the billing department or insurance coordinator.
D. Immunization records: Immunization records are not required for a colonoscopy; they are more relevant for vaccinations and certain other procedures.