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DHA EKG Technician (DHA-EKG) Practice Tests & Test Prep - Review



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DHA EKG Technician - Reviews


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Based on 140 reviews

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See why our users from 154 countries love us for their exam prep! Including 140 reviews for the DHA EKG Technician exam.

Exam Edge is an industry leader in online test prep. We work with institutional partners to offer a wide array of practice tests that will help you prepare for your big exam. No matter how niche your field of interest might be, we're here to help you prepare for test day.

   Excellent -- Based on 140 reviews

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DHA EKG Technician - Test Reviews Sample Questions

With a wandering baseline problem, the waveform moves up and down on the tracing. This is typically caused by which of the problems?

Correct Answer:
both a and b


a wandering baseline in an electrocardiogram (ecg) refers to a situation where the baseline of the ecg tracing shifts vertically, moving up and down rather than remaining steady. this issue can obscure the true electrical activities of the heart and make the interpretation of the ecg difficult or inaccurate. the primary causes of a wandering baseline typically include poor lead connection and exaggerated respiratory movements by the patient.

**bad lead connection**: one common cause of a wandering baseline is a bad connection of the leads. this might occur if the electrodes that attach to the patient's skin are not properly secured or if there is poor contact due to factors such as oily skin, excessive hair, or movement. loose or defective cables and connectors can also contribute to this problem. it’s crucial for the ecg technician to ensure that all electrodes are firmly attached and making good contact with the patient’s skin to get accurate readings.

**exaggerated respiratory movements**: another factor that can cause a wandering baseline is the patient's breathing pattern. during deep or irregular breathing, the impedance of the chest changes, which can affect the ecg readings. this is particularly noticeable in leads that are placed across the chest. to mitigate this, technicians might instruct the patient to breathe normally and evenly, and in some cases, to hold their breath briefly during the recording of the ecg.

given these considerations, the correct response to the question about the typical cause of a wandering baseline would be "both a and b" - indicating that both bad lead connections and exaggerated respiratory movements are potential culprits.

**ecg technician's role**: when faced with a wandering baseline, an ecg technician should first check all leads and electrodes for correct and secure connection. they should ensure that each electrode has full contact with the patient's skin, potentially cleaning the skin area before placing the electrode or replacing any faulty leads or electrodes. additionally, if the technician suspects that respiratory movements are influencing the ecg, they might guide the patient on how to breathe or hold their breath during the ecg procedure to minimize the impact of breathing on the baseline.

in conclusion, addressing both of these potential issues can help in achieving a clearer and more accurate ecg tracing, essential for proper cardiac assessment and diagnosis.